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keypad question - chrisatwan2000 - Mar 15 12:18:00 2004

I am trying to scan a keypad and display results onto lcd display. I am using imagecraft compiler for the avr. Does anyone have any code or know where I can find some. Thank you, Chris Atwan

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Re: [AVR club] keypad question - jay marante - Mar 15 13:11:00 2004

Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com

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Re: [AVR club] keypad question - chris atwan - Mar 15 13:29:00 2004

Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To

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Re: [AVR club] keypad question - jay marante - Mar 16 0:12:00 2004

nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To

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Re: [AVR club] keypad question - chris atwan - Mar 16 11:24:00 2004

Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To

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Re: [AVR club] keypad question - jay marante - Mar 16 12:09:00 2004

here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed]

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Re: [AVR club] keypad question - chris atwan - Mar 16 18:04:00 2004

Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Re: [AVR club] keypad question - jay marante - Mar 16 19:45:00 2004

i used the latest version of the ICCAVR. chris atwan <chrisatwan2000@chri...> wrote:Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Re: [AVR club] keypad question - jay marante - Mar 16 19:47:00 2004

i used the latest version of the ICCAVR. chris atwan <chrisatwan2000@chri...> wrote: Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Re: [AVR club] keypad question - jay marante - Mar 16 19:47:00 2004

i used the latest version of the ICCAVR. chris atwan <chrisatwan2000@chri...> wrote: Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Re: [AVR club] keypad question - jay marante - Mar 16 19:50:00 2004

i used the latest version of the ICCAVR. chris atwan <chrisatwan2000@chri...> wrote: Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Re: [AVR club] keypad question - chris atwan - Mar 16 20:59:00 2004

Jay, I feel bad asking you this after all the help you have given me. What did the hardware setup look like for the keypad to the at90s8515? Chris Atwan jay marante <jaythesis@jayt...> wrote: i used the latest version of the ICCAVR. chris atwan <chrisatwan2000@chri...> wrote: Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Re: [AVR club] keypad question - jay marante - Mar 17 5:42:00 2004

here's the pin outs: keypad (4x3) MCU (Port A) Pin 1 (2nd col) PA5 Pin 2 (1st row) PA3 Pin 3 (1st col) PA6 Pin 4 (4th row) PA0 Pin 5 (3rd col) PA4 Pin 6 (3rd row) PA1 Pin 7 (2nd row) PA2 you may verify that with an ohmmeter by tappping the pins between the row and the column and pressing the key. example, tapping pin 2 (1st row) with pin 3 (1st col) should be the # 1. ;) when testing with the AVR simulator, set first PIND2 to high so that it wont generate an interrupt since i enabled the pull-up, so we assume that the MCU will always read "1" on its port when there is no interupt generated. then set PIND2 to low when you want to generate an interrupt. also, together with PIND2, set to high the low nibble of port A. this is because we will read the rows first, and since we also enabled the pull-up resistors. but set one bit to low. setting 1 bit to low means that you pressed that key (say PINA3) if you pressed 1. then continue until when you're about to read the columns. set two bits of the high nibble (from PINA4 to PINA6 -- they are the columns). still we set 1 bit to low (say PINA6 since we pressed # 1) for the MCU to read. and that's it. anyways, the explanation is on the atmel application notes though the code is written in assemble. yet they are still the same. ;) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, I feel bad asking you this after all the help you have given me. What did the hardware setup look like for the keypad to the at90s8515? Chris Atwan jay marante <jaythesis@jayt...> wrote: i used the latest version of the ICCAVR. chris atwan <chrisatwan2000@chri...> wrote: Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Re: [AVR club] keypad question - John Johnson - Mar 17 8:05:00 2004

I ran across a novel idea for a keypad encoder using an a/d input on a ucontroller, something like this: Vcc ^ | +-/\/\/-+-/\/\/-+-/\/\/-+ +--|-------|-------|-------|-- | | | | | > | | | | < | | | | | | | | | +--|-------|-------|-------|-- | | | | | > | | | | < | | | | | | | | | +--|-------|-------|-------|-- | | | | | > | | | | < | | | | | | | | | out ---+--|-------|-------|-------|-- | > < (these are resistors too) | V Gnd A keypad switch is connected where each vertical and horizontal line cross. You can probably Google and find more/better schematics. Regards, JJ On Wednesday, Mar 17, 2004, at 04:42 US/Eastern, jay marante wrote: > here's the pin outs: > > keypad (4x3) MCU (Port A) > Pin 1 (2nd col) PA5 > Pin 2 (1st row) PA3 > Pin 3 (1st col) PA6 > Pin 4 (4th row) PA0 > Pin 5 (3rd col) PA4 > Pin 6 (3rd row) PA1 > Pin 7 (2nd row) PA2 > > you may verify that with an ohmmeter by tappping the pins between the > row and the column and pressing the key. example, tapping pin 2 (1st > row) with pin 3 (1st col) should be the # 1. ;) > > when testing with the AVR simulator, set first PIND2 to high so that > it wont generate an interrupt since i enabled the pull-up, so we > assume that the MCU will always read "1" on its port when there is no > interupt generated. then set PIND2 to low when you want to generate an > interrupt. also, together with PIND2, set to high the low nibble of > port A. this is because we will read the rows first, and since we also > enabled the pull-up resistors. but set one bit to low. setting 1 bit > to low means that you pressed that key (say PINA3) if you pressed 1. > then continue until when you're about to read the columns. set two > bits of the high nibble (from PINA4 to PINA6 -- they are the columns). > still we set 1 bit to low (say PINA6 since we pressed # 1) for the MCU > to read. and that's it. > > anyways, the explanation is on the atmel application notes though the > code is written in assemble. yet they are still the same. ;) > > -jay > > chris atwan <chrisatwan2000@chri...> wrote: > Jay, > > I feel bad asking you this after all the help you have given me. What > did the hardware setup look like for the keypad to the at90s8515? > > Chris Atwan > > jay marante <jaythesis@jayt...> wrote: > i used the latest version of the ICCAVR. > > chris atwan <chrisatwan2000@chri...> wrote: Jay, > > Was this written in Codevision? > > Chris > > jay marante <jaythesis@jayt...> wrote: > here, try this. > > i used a 4x3 keypad and 7.3728MHz of crystal. > this was my first program in AVR actually. :-) > good luck. > > -jay > chris atwan <chrisatwan2000@chri...> wrote: > Jay, > > Well I would be interested in seeing it if you can find it. > > Chris Atwan > > jay marante <jaythesis@jayt...> wrote: > nahh... i think it's in assembly. > > i have 1 before using the AT90S8515 but i think i lost it. :) > > -jay > > chris atwan <chrisatwan2000@chri...> wrote: > Jay, > > Is this example using imagecraft? > > Chris Atwan > > jay marante <jaythesis@jayt...> wrote: > Theres an application notes at the atmel website. -jay > --- chrisatwan2000@chri... > <chrisatwan2000@chri...> wrote: >> I am trying to scan a keypad and display results > onto lcd display. >> I am using imagecraft compiler for the avr. Does > anyone have any >> code or know where I can find some. >> >> Thank you, >> Chris Atwan > > __________________________________ > ">http://mail.yahoo.com > --------------------------------- > Yahoo! Groups Links > > To > > --------------------------------- > Yahoo! Groups Links > > To > > --------------------------------- > Yahoo! Groups Links > > To > > --------------------------------- > Yahoo! Groups Links > > To > > > #include <io8515v.h> > > / > *********************************************************************** > ********* > * Interrupt Vectors Declarations > *********************************************************************** > *********/ > #pragma interrupt_handler VECInt0:2 /* External Interrupt > Request 0 */ > #pragma interrupt_handler VECInt1:3 /* External Interrput > Request 1 */ > #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture > Event */ > #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare > Match A */ > #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare > Match B */ > #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow > */ > #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow > */ > #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete > */ > #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete > */ > #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register > Empty */ > #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete > */ > #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator > */ > / > *********************************************************************** > ********* > * Function prototypes > *********************************************************************** > *********/ > void main (void); > void VECInt0 (void); > void VECInt1 (void); > void VECTmr1_Capt (void); > void VECTmr1_CompA (void); > void VECTmr1_CompB (void); > void VECTmr1_Ovf (void); > void VECTmr0_Ovf (void); > void VECSPI_STC (void); > void VECUART_RX (void); > void VECUART_UDRE (void); > void VECUART_TX (void); > void VECAna_Comp (void); > > void keypadinit (void); > void delay (void); > > #define PORTDIR DDRA > > /* > *********************************************************************** > ********* > * Main Program > *********************************************************************** > ********* > */ > void main (void) > { > SPH = 0x02; //initialize stack > pointer high byte > SPL = 0x5F; //initialize stack > pointer low byte > SREG = 0x80; //set global > interrupt enable > DDRD = 0xFB; //set PORTD pin 2 as > input, rest output > PORTD = 0x04; //set PIN2 pull-up > resistor > GIMSK = 0x40; //set external > interrupt 0 enable > MCUCR = 0x00; //set external > interrupt 0 sense control to low level > TIMSK = 0x80; //set timer/counter > 1 interrupt overflow enable > > keypadinit(); //initialize the > keypad > > for(;;) //infinite loop > {} > } > void VECInt0 (void) > { > unsigned char key; > unsigned char value; > > value = ~(PINA|0xF0); // 0000iiii; get row > pressed > if (value == 1) key = 9; //if 4th row > else if (value == 2) key = 6; //if 3rd row > else if (value == 4) key = 3; //if 2nd row > else if (value == 8) key = 0; //if 1st row > > /************** swap nybbles *****************/ > PORTDIR |= 0x8F; // 1XXX1111 > PORTDIR &= 0x8F; //set PORTB nybbles > for keypad, 10001111 > PORTA |= 0x70; // X111XXXX > PORTA &= 0x70; //set PORTC outputs > and pull-ups, 01110000 > > delay(); //delay to settle > the pins > value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed > if (value == 0x01) key += 3; //if 3rd column > else if (value == 0x02) key += 2; //if 2nd column > else if (value == 0x04) key += 1; //if 1st column > > keypadinit(); //reset PORTA > direction > > /*********** this part is for debouncing ****************/ > GIMSK = 0x00; //disable external > interrupt 0 > TCNT1 = 0xFA60; //start count from > 64096 to obtain > //timer > overflow of 0.2 second > TCCR1B = 0x05; //prescaler = ck/1024 > TIMSK |= 0x80; //set timer/counter 1 > interrupt overflow enable > } > void VECInt1 (void) > {} > void VECTmr1_Capt (void) > {} > void VECTmr1_CompA (void) > {} > void VECTmr1_CompB (void) > {} > void VECTmr1_Ovf (void) > { > GIMSK |= 0x40; //set external > interrupt enable > TCCR1B = 0x00; //disable timer > TIMSK &= 0x7F; //set timer/counter > interrupt disable > GIFR = 0x00; //set external > interrupt flag to 0 > } > void VECTmr0_Ovf (void) > {} > void VECSPI_STC (void) > {} > void VECUART_RX (void) > {} > void VECUART_UDRE (void) > {} > void VECUART_TX (void) > {} > void VECAna_Comp (void) > {} > void keypadinit (void) > { > PORTDIR |= 0xF0; // 1111XXXX > PORTDIR &= 0xF0; //set PORTA nybbles > for keypad, 11110000 > PORTA |= 0x0F; // XXXX1111 > PORTA &= 0x0F; //set PORTA outputs and > pull-ups, 00001111 > } > void delay (void) > { > unsigned i; > for (i = 0; i < 255; i++) > {} > } > > [Non-text portions of this message have been removed] > > --------------------------------- > Yahoo! Groups Links > > To > > --------------------------------- > Yahoo! Groups Links > > To > > > --------------------------------- > Yahoo! Groups Links > > To > Yahoo! Groups Sponsor > > --------------------------------- > Yahoo! Groups Links > > To > > > Yahoo! Groups Links

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Re: [AVR club] keypad question - chris atwan - Mar 17 11:06:00 2004

Jay, Should this code be able to change for a 4x4 keypad? I need 16 keys for my toy. Chris Atwan jay marante <jaythesis@jayt...> wrote: here's the pin outs: keypad (4x3) MCU (Port A) Pin 1 (2nd col) PA5 Pin 2 (1st row) PA3 Pin 3 (1st col) PA6 Pin 4 (4th row) PA0 Pin 5 (3rd col) PA4 Pin 6 (3rd row) PA1 Pin 7 (2nd row) PA2 you may verify that with an ohmmeter by tappping the pins between the row and the column and pressing the key. example, tapping pin 2 (1st row) with pin 3 (1st col) should be the # 1. ;) when testing with the AVR simulator, set first PIND2 to high so that it wont generate an interrupt since i enabled the pull-up, so we assume that the MCU will always read "1" on its port when there is no interupt generated. then set PIND2 to low when you want to generate an interrupt. also, together with PIND2, set to high the low nibble of port A. this is because we will read the rows first, and since we also enabled the pull-up resistors. but set one bit to low. setting 1 bit to low means that you pressed that key (say PINA3) if you pressed 1. then continue until when you're about to read the columns. set two bits of the high nibble (from PINA4 to PINA6 -- they are the columns). still we set 1 bit to low (say PINA6 since we pressed # 1) for the MCU to read. and that's it. anyways, the explanation is on the atmel application notes though the code is written in assemble. yet they are still the same. ;) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, I feel bad asking you this after all the help you have given me. What did the hardware setup look like for the keypad to the at90s8515? Chris Atwan jay marante <jaythesis@jayt...> wrote: i used the latest version of the ICCAVR. chris atwan <chrisatwan2000@chri...> wrote: Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Re: [AVR club] keypad question - jay marante - Mar 17 11:25:00 2004

yeah... you'll just have to use the last pin (PINA7) for the last column. maybe you'll have to adjust the connections since i don't know exactly where the last pin is located at the keypad. note: use the lower nibble of the port for the rows and the high nibble for the columns. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Should this code be able to change for a 4x4 keypad? I need 16 keys for my toy. Chris Atwan jay marante <jaythesis@jayt...> wrote: here's the pin outs: keypad (4x3) MCU (Port A) Pin 1 (2nd col) PA5 Pin 2 (1st row) PA3 Pin 3 (1st col) PA6 Pin 4 (4th row) PA0 Pin 5 (3rd col) PA4 Pin 6 (3rd row) PA1 Pin 7 (2nd row) PA2 you may verify that with an ohmmeter by tappping the pins between the row and the column and pressing the key. example, tapping pin 2 (1st row) with pin 3 (1st col) should be the # 1. ;) when testing with the AVR simulator, set first PIND2 to high so that it wont generate an interrupt since i enabled the pull-up, so we assume that the MCU will always read "1" on its port when there is no interupt generated. then set PIND2 to low when you want to generate an interrupt. also, together with PIND2, set to high the low nibble of port A. this is because we will read the rows first, and since we also enabled the pull-up resistors. but set one bit to low. setting 1 bit to low means that you pressed that key (say PINA3) if you pressed 1. then continue until when you're about to read the columns. set two bits of the high nibble (from PINA4 to PINA6 -- they are the columns). still we set 1 bit to low (say PINA6 since we pressed # 1) for the MCU to read. and that's it. anyways, the explanation is on the atmel application notes though the code is written in assemble. yet they are still the same. ;) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, I feel bad asking you this after all the help you have given me. What did the hardware setup look like for the keypad to the at90s8515? Chris Atwan jay marante <jaythesis@jayt...> wrote: i used the latest version of the ICCAVR. chris atwan <chrisatwan2000@chri...> wrote: Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Re: [AVR club] keypad question - chris atwan - Mar 17 14:27:00 2004

Jay, I will try this, thank you for the help. Sorry about bothering you so much on this problem. Chris Atwan jay marante <jaythesis@jayt...> wrote: yeah... you'll just have to use the last pin (PINA7) for the last column. maybe you'll have to adjust the connections since i don't know exactly where the last pin is located at the keypad. note: use the lower nibble of the port for the rows and the high nibble for the columns. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Should this code be able to change for a 4x4 keypad? I need 16 keys for my toy. Chris Atwan jay marante <jaythesis@jayt...> wrote: here's the pin outs: keypad (4x3) MCU (Port A) Pin 1 (2nd col) PA5 Pin 2 (1st row) PA3 Pin 3 (1st col) PA6 Pin 4 (4th row) PA0 Pin 5 (3rd col) PA4 Pin 6 (3rd row) PA1 Pin 7 (2nd row) PA2 you may verify that with an ohmmeter by tappping the pins between the row and the column and pressing the key. example, tapping pin 2 (1st row) with pin 3 (1st col) should be the # 1. ;) when testing with the AVR simulator, set first PIND2 to high so that it wont generate an interrupt since i enabled the pull-up, so we assume that the MCU will always read "1" on its port when there is no interupt generated. then set PIND2 to low when you want to generate an interrupt. also, together with PIND2, set to high the low nibble of port A. this is because we will read the rows first, and since we also enabled the pull-up resistors. but set one bit to low. setting 1 bit to low means that you pressed that key (say PINA3) if you pressed 1. then continue until when you're about to read the columns. set two bits of the high nibble (from PINA4 to PINA6 -- they are the columns). still we set 1 bit to low (say PINA6 since we pressed # 1) for the MCU to read. and that's it. anyways, the explanation is on the atmel application notes though the code is written in assemble. yet they are still the same. ;) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, I feel bad asking you this after all the help you have given me. What did the hardware setup look like for the keypad to the at90s8515? Chris Atwan jay marante <jaythesis@jayt...> wrote: i used the latest version of the ICCAVR. chris atwan <chrisatwan2000@chri...> wrote: Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Re: [AVR club] keypad question - chris atwan - Mar 17 19:34:00 2004

Jay, The atmel example I was trying to follow with the keypad is the one that uses 4 diodes for the 4 columns. Is this ok with the code you sent me? Chris Atwan jay marante <jaythesis@jayt...> wrote: yeah... you'll just have to use the last pin (PINA7) for the last column. maybe you'll have to adjust the connections since i don't know exactly where the last pin is located at the keypad. note: use the lower nibble of the port for the rows and the high nibble for the columns. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Should this code be able to change for a 4x4 keypad? I need 16 keys for my toy. Chris Atwan jay marante <jaythesis@jayt...> wrote: here's the pin outs: keypad (4x3) MCU (Port A) Pin 1 (2nd col) PA5 Pin 2 (1st row) PA3 Pin 3 (1st col) PA6 Pin 4 (4th row) PA0 Pin 5 (3rd col) PA4 Pin 6 (3rd row) PA1 Pin 7 (2nd row) PA2 you may verify that with an ohmmeter by tappping the pins between the row and the column and pressing the key. example, tapping pin 2 (1st row) with pin 3 (1st col) should be the # 1. ;) when testing with the AVR simulator, set first PIND2 to high so that it wont generate an interrupt since i enabled the pull-up, so we assume that the MCU will always read "1" on its port when there is no interupt generated. then set PIND2 to low when you want to generate an interrupt. also, together with PIND2, set to high the low nibble of port A. this is because we will read the rows first, and since we also enabled the pull-up resistors. but set one bit to low. setting 1 bit to low means that you pressed that key (say PINA3) if you pressed 1. then continue until when you're about to read the columns. set two bits of the high nibble (from PINA4 to PINA6 -- they are the columns). still we set 1 bit to low (say PINA6 since we pressed # 1) for the MCU to read. and that's it. anyways, the explanation is on the atmel application notes though the code is written in assemble. yet they are still the same. ;) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, I feel bad asking you this after all the help you have given me. What did the hardware setup look like for the keypad to the at90s8515? Chris Atwan jay marante <jaythesis@jayt...> wrote: i used the latest version of the ICCAVR. chris atwan <chrisatwan2000@chri...> wrote: Jay, Was this written in Codevision? Chris jay marante <jaythesis@jayt...> wrote: here, try this. i used a 4x3 keypad and 7.3728MHz of crystal. this was my first program in AVR actually. :-) good luck. -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Well I would be interested in seeing it if you can find it. Chris Atwan jay marante <jaythesis@jayt...> wrote: nahh... i think it's in assembly. i have 1 before using the AT90S8515 but i think i lost it. :) -jay chris atwan <chrisatwan2000@chri...> wrote: Jay, Is this example using imagecraft? Chris Atwan jay marante <jaythesis@jayt...> wrote: Theres an application notes at the atmel website. -jay --- chrisatwan2000@chri... <chrisatwan2000@chri...> wrote: > I am trying to scan a keypad and display results onto lcd display. > I am using imagecraft compiler for the avr. Does anyone have any > code or know where I can find some. > > Thank you, > Chris Atwan __________________________________ ">http://mail.yahoo.com --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To --------------------------------- Yahoo! Groups Links To #include <io8515v.h> /******************************************************************************** * Interrupt Vectors Declarations ********************************************************************************/ #pragma interrupt_handler VECInt0:2 /* External Interrupt Request 0 */ #pragma interrupt_handler VECInt1:3 /* External Interrput Request 1 */ #pragma interrupt_handler VECTmr1_Capt:4 /* Timer/Counter 1 Capture Event */ #pragma interrupt_handler VECTmr1_CompA:5 /* Timer/Counter 1 Compare Match A */ #pragma interrupt_handler VECTmr1_CompB:6 /* Timer/Counter 1 Compare Match B */ #pragma interrupt_handler VECTmr1_Ovf:7 /* Timer/Counter 1 Overflow */ #pragma interrupt_handler VECTmr0_Ovf:8 /* Timer/Counter 0 Overflow */ #pragma interrupt_handler VECSPI_STC:9 /* Serial Transfer Complete */ #pragma interrupt_handler VECUART_RX:10 /* UART, RX Complete */ #pragma interrupt_handler VECUART_UDRE:11 /* UART, Data Register Empty */ #pragma interrupt_handler VECUART_TX:12 /* UART, TX Complete */ #pragma interrupt_handler VECAna_Comp:13 /* Analog Comparator */ /******************************************************************************** * Function prototypes ********************************************************************************/ void main (void); void VECInt0 (void); void VECInt1 (void); void VECTmr1_Capt (void); void VECTmr1_CompA (void); void VECTmr1_CompB (void); void VECTmr1_Ovf (void); void VECTmr0_Ovf (void); void VECSPI_STC (void); void VECUART_RX (void); void VECUART_UDRE (void); void VECUART_TX (void); void VECAna_Comp (void); void keypadinit (void); void delay (void); #define PORTDIR DDRA /* ******************************************************************************** * Main Program ******************************************************************************** */ void main (void) { SPH = 0x02; //initialize stack pointer high byte SPL = 0x5F; //initialize stack pointer low byte SREG = 0x80; //set global interrupt enable DDRD = 0xFB; //set PORTD pin 2 as input, rest output PORTD = 0x04; //set PIN2 pull-up resistor GIMSK = 0x40; //set external interrupt 0 enable MCUCR = 0x00; //set external interrupt 0 sense control to low level TIMSK = 0x80; //set timer/counter 1 interrupt overflow enable keypadinit(); //initialize the keypad for(;;) //infinite loop {} } void VECInt0 (void) { unsigned char key; unsigned char value; value = ~(PINA|0xF0); // 0000iiii; get row pressed if (value == 1) key = 9; //if 4th row else if (value == 2) key = 6; //if 3rd row else if (value == 4) key = 3; //if 2nd row else if (value == 8) key = 0; //if 1st row /************** swap nybbles *****************/ PORTDIR |= 0x8F; // 1XXX1111 PORTDIR &= 0x8F; //set PORTB nybbles for keypad, 10001111 PORTA |= 0x70; // X111XXXX PORTA &= 0x70; //set PORTC outputs and pull-ups, 01110000 delay(); //delay to settle the pins value = ~((PINA>>4)|0xF8); // 0iii0000; ge column pressed if (value == 0x01) key += 3; //if 3rd column else if (value == 0x02) key += 2; //if 2nd column else if (value == 0x04) key += 1; //if 1st column keypadinit(); //reset PORTA direction /*********** this part is for debouncing ****************/ GIMSK = 0x00; //disable external interrupt 0 TCNT1 = 0xFA60; //start count from 64096 to obtain //timer overflow of 0.2 second TCCR1B = 0x05; //prescaler = ck/1024 TIMSK |= 0x80; //set timer/counter 1 interrupt overflow enable } void VECInt1 (void) {} void VECTmr1_Capt (void) {} void VECTmr1_CompA (void) {} void VECTmr1_CompB (void) {} void VECTmr1_Ovf (void) { GIMSK |= 0x40; //set external interrupt enable TCCR1B = 0x00; //disable timer TIMSK &= 0x7F; //set timer/counter interrupt disable GIFR = 0x00; //set external interrupt flag to 0 } void VECTmr0_Ovf (void) {} void VECSPI_STC (void) {} void VECUART_RX (void) {} void VECUART_UDRE (void) {} void VECUART_TX (void) {} void VECAna_Comp (void) {} void keypadinit (void) { PORTDIR |= 0xF0; // 1111XXXX PORTDIR &= 0xF0; //set PORTA nybbles for keypad, 11110000 PORTA |= 0x0F; // XXXX1111 PORTA &= 0x0F; //set PORTA outputs and pull-ups, 00001111 } void delay (void) { unsigned i; for (i = 0; i < 255; i++) {} } [Non-text portions of this message have been removed] --------------------------------- Yahoo! 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Discussion Groups | AVRclub | Re: [AVR club] keypad question

keypad question - chrisatwan2000 - Mar 15 12:18:00 2004

Re: [AVR club] keypad question - jay marante - Mar 15 13:11:00 2004

Re: [AVR club] keypad question - chris atwan - Mar 15 13:29:00 2004

Re: [AVR club] keypad question - jay marante - Mar 16 0:12:00 2004

Re: [AVR club] keypad question - chris atwan - Mar 16 11:24:00 2004

Re: [AVR club] keypad question - jay marante - Mar 16 12:09:00 2004

Re: [AVR club] keypad question - chris atwan - Mar 16 18:04:00 2004

Re: [AVR club] keypad question - jay marante - Mar 16 19:45:00 2004

Re: [AVR club] keypad question - jay marante - Mar 16 19:47:00 2004

Re: [AVR club] keypad question - jay marante - Mar 16 19:47:00 2004

Re: [AVR club] keypad question - jay marante - Mar 16 19:50:00 2004

Re: [AVR club] keypad question - chris atwan - Mar 16 20:59:00 2004

Re: [AVR club] keypad question - jay marante - Mar 17 5:42:00 2004

Re: [AVR club] keypad question - John Johnson - Mar 17 8:05:00 2004

Re: [AVR club] keypad question - chris atwan - Mar 17 11:06:00 2004

Re: [AVR club] keypad question - jay marante - Mar 17 11:25:00 2004

Re: [AVR club] keypad question - chris atwan - Mar 17 14:27:00 2004

Re: [AVR club] keypad question - chris atwan - Mar 17 19:34:00 2004