Hello.
Sorry for disturbing, but I wanted to ask one question that has been bothering
me.if you could please help me, i would really appreciate it.
i have a board with msp430f149. the outputs from the board are timer B1 and
A0. The board also has a serial connection with
the URXD1. what i want to do is control the frequency and pulsewidth of the
timerA and timer B frequency from my computer
i.e i want to develop a GUI to set the frequency. I wrote an assembler program
for this and i couldn't receive any number from
the buffer, i know the hardware serial port and everyting is working fine but
i couldn't figure what is wrong and i am stuck.
Could you please look at my code and give me your inputs.
Thank you and Thank you again.
Ermias
#include "msp430x14x.h"
#define Flash_start 01100h
#define RAM_end 00200h
;-------
ORG Flash_start ; Progam Start (1K Flash
device)
;0FC00h
;-------
RESET mov.w #RAM_end,SP ; 00A00h Set stackpointer
(128B RAM device)
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop watchdog timer
clr.b &P1OUT
clr.b &P2OUT
clr.b &P3OUT
clr.b &P4OUT
clr.b &P5OUT
clr.b &P6OUT
;eint
;BIS.B #RSEL2+RSEL1+RSEL0,&BCSCTL1
;BIS.B #DCO0+DCO1+DCO2,&DCOCTL ; Set max DCO frequency
BIS.B #DIVM1+DIVM0,&BCSCTL2
BIS.B #DIVS1+DIVS0,&BCSCTL2
BIS.B #BIT7,&P4DIR
BIS #TBCLR,&TBCTL
MOV #TBSSEL1+ID1+ID0+TBIE,&TBCTL
MOV #OUTMOD_7+CCIE,&TBCCTL1
MOV #120,&TBCCR0
MOV #85,&TBCCR1
BIS #MC0,&TBCTL
BIS #TACLR,&TACTL
MOV #TASSEL1+ID1+ID0+TAIE,&TACTL ; Define new state
MOV #OUTMOD2+CCIE,&TACCTL0 ; CCR0: toggle TA0
MOV #189,&TACCR0 ; fccr0 = 20kHz
BIS #MC0,&TACTL ;Start init. timer. Up Mode
TAO BIS.B #BIT5,&P1SEL
BIS.B #BIT5,&P1DIR
TB1 BIS.B #BIT1,&P4SEL
BIS.B #BIT1,&P4DIR
MCLK BIS.B #BIT4,&P5SEL
mov.b #BIT4,&P5DIR
SMCLK BIS.B #BIT5,&P5SEL
BIS.B #BIT5,&P5DIR
ACLK BIS.B #BIT6,&P5SEL
BIS.B #BIT6,&P5DIR
BIS.B #BIT7,&P3SEL
*/
;------
BIS.B #SWRST,&U1CTL
BIS.B #CHAR+MM,&U1CTL
BIC.B #SYNC,&U1CTL
BIS.B #SSEL1,&U1TCTL
MOV.B #03h,&U1BR0
MOV.B #00h,&U1BR1
CLR.B &U1MCTL
BIS.B #URXE1,&ME2
BIC.B #SWRST,U1CTL
BIS.B #URXIE1,&IE2
;-------
Main
;BIS.B #LPM0,0(SP)
XOR.B #BIT7,&P4OUT
JMP Main
;-------
SPI1R CLR R10
MOV.B &U1RXBUF,R10
BIC.B #URXIE1,IE2
reti
;-------
;Timer NOP
; reti
;-------
; Interrupt Vectors
;-------
RSEG INTVEC ; Interrupt Vector
Startadress
DW RESET ; 0, 0FFE0h - Basic Timer - lowest
priority
DW RESET ; 1, 0FFE2h - I/O Port P2 (eight
flags)
DW RESET ; 2, 0FFE4h - USART1 Transmit,
UTXIFG1
DW SPI1R ; 3, 0FFE6h - USART1 Receive,
URXIFG1
DW RESET ; 4, 0FFE8h - I/O Port P1 (eight
flags)
DW Timer ; 5, 0FFEAh - Timer_A3 CCIFG1,
CCIFG2, TAIFG
DW Timer ; 6, 0FFECh - Timer_A3 CCIFG0
DW RESET ; 7, 0FFEEh - ADC, ADCIFG
DW RESET ; 8, 0FFF0h - USART0 Transmit,
UTXIFG0
DW RESET ; 9, 0FFF2h - USART0 Receive,
URXIFG0
DW RESET ; 10, 0FFF4h - Watchdog Timer -
WDTIFG
DW RESET ; 11, 0FFF6h - Comparator_A -
CAIFG
DW Timer ; 12, 0FFF8h - Timer_B7, CCIFG1 to
CCIFG6, TBIFG
DW Timer ; 13, 0FFFAh - Timer_B7, CCIFG0
DW RESET ; 14, 0FFFCh - NMIIFG - OFIFG -
ACCVIFG
DW RESET ; 15, 0FFFEh - Reset - highest
priority
;-----------------------
END ; End of program
;-----------------------
---------------------------------
Pinpoint customers who are looking for what you sell.
Serial communication
Started by ●June 18, 2007
Reply by ●June 18, 20072007-06-18
Hello Ermias
You need to enable general interrupts. EINT in assembler for example.
Otherwise R10 will never get updated.
When general interrupts are enabled it is not sufficient to have an
empty interrupt handler to clear the two timer interrupts that handle
multiple timer interrupt flags.
John Heenan
--- In m..., ermias gebre wrote:
>
> Hello.
> Sorry for disturbing, but I wanted to ask one question that has
been bothering me.if you could please help me, i would really
appreciate it.
> i have a board with msp430f149. the outputs from the board are
timer B1 and A0. The board also has a serial connection with
> the URXD1. what i want to do is control the frequency and
pulsewidth of the timerA and timer B frequency from my computer
> i.e i want to develop a GUI to set the frequency. I wrote an
assembler program for this and i couldn't receive any number from
> the buffer, i know the hardware serial port and everyting is
working fine but i couldn't figure what is wrong and i am stuck.
> Could you please look at my code and give me your inputs.
>
> Thank you and Thank you again.
> Ermias
> #include "msp430x14x.h"
> #define Flash_start 01100h
> #define RAM_end 00200h
>
> ;-------------------------------
------------
> ORG Flash_start ; Progam Start (1K
Flash device)
> ;0FC00h
> ;-------------------------------
------------
> RESET mov.w #RAM_end,SP ; 00A00h Set
stackpointer (128B RAM device)
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop watchdog
timer
> clr.b &P1OUT
> clr.b &P2OUT
> clr.b &P3OUT
> clr.b &P4OUT
> clr.b &P5OUT
> clr.b &P6OUT
> ;eint
> ;BIS.B #RSEL2+RSEL1+RSEL0,&BCSCTL1
> ;BIS.B #DCO0+DCO1+DCO2,&DCOCTL ; Set max DCO
frequency
> BIS.B #DIVM1+DIVM0,&BCSCTL2
> BIS.B #DIVS1+DIVS0,&BCSCTL2
> BIS.B #BIT7,&P4DIR
> BIS #TBCLR,&TBCTL
> MOV #TBSSEL1+ID1+ID0+TBIE,&TBCTL
> MOV #OUTMOD_7+CCIE,&TBCCTL1
> MOV #120,&TBCCR0
> MOV #85,&TBCCR1
> BIS #MC0,&TBCTL
>
> BIS #TACLR,&TACTL
> MOV #TASSEL1+ID1+ID0+TAIE,&TACTL ; Define new
state
> MOV #OUTMOD2+CCIE,&TACCTL0 ; CCR0: toggle TA0
> MOV #189,&TACCR0 ; fccr0 = 20kHz
> BIS #MC0,&TACTL ;Start init. timer.
Up Mode
>
> TAO BIS.B #BIT5,&P1SEL
> BIS.B #BIT5,&P1DIR
> TB1 BIS.B #BIT1,&P4SEL
> BIS.B #BIT1,&P4DIR
> MCLK BIS.B #BIT4,&P5SEL
> mov.b #BIT4,&P5DIR
> SMCLK BIS.B #BIT5,&P5SEL
> BIS.B #BIT5,&P5DIR
> ACLK BIS.B #BIT6,&P5SEL
> BIS.B #BIT6,&P5DIR
> BIS.B #BIT7,&P3SEL
>
> */
> ;------
> BIS.B #SWRST,&U1CTL
> BIS.B #CHAR+MM,&U1CTL
> BIC.B #SYNC,&U1CTL
> BIS.B #SSEL1,&U1TCTL
> MOV.B #03h,&U1BR0
> MOV.B #00h,&U1BR1
> CLR.B &U1MCTL
> BIS.B #URXE1,&ME2
> BIC.B #SWRST,U1CTL
> BIS.B #URXIE1,&IE2
> ;-------------------------------
------------
>
> Main
> ;BIS.B #LPM0,0(SP)
> XOR.B #BIT7,&P4OUT
> JMP Main
> ;-------------------------------
------------
> SPI1R CLR R10
> MOV.B &U1RXBUF,R10
> BIC.B #URXIE1,IE2
> reti
> ;-------------------------------
------------
> ;Timer NOP
> ; reti
> ;-------------------------------
------------
> ; Interrupt Vectors
> ;-------------------------------
------------
> RSEG INTVEC ; Interrupt
Vector Startadress
> DW RESET ; 0, 0FFE0h - Basic
Timer - lowest priority
> DW RESET ; 1, 0FFE2h - I/O Port
P2 (eight flags)
> DW RESET ; 2, 0FFE4h - USART1
Transmit, UTXIFG1
> DW SPI1R ; 3, 0FFE6h - USART1
Receive, URXIFG1
> DW RESET ; 4, 0FFE8h - I/O Port
P1 (eight flags)
> DW Timer ; 5, 0FFEAh - Timer_A3
CCIFG1, CCIFG2, TAIFG
> DW Timer ; 6, 0FFECh - Timer_A3
CCIFG0
> DW RESET ; 7, 0FFEEh - ADC,
ADCIFG
> DW RESET ; 8, 0FFF0h - USART0
Transmit, UTXIFG0
> DW RESET ; 9, 0FFF2h - USART0
Receive, URXIFG0
> DW RESET ; 10, 0FFF4h - Watchdog
Timer - WDTIFG
> DW RESET ; 11, 0FFF6h -
Comparator_A - CAIFG
> DW Timer ; 12, 0FFF8h -
Timer_B7, CCIFG1 to CCIFG6, TBIFG
> DW Timer ; 13, 0FFFAh -
Timer_B7, CCIFG0
> DW RESET ; 14, 0FFFCh - NMIIFG -
OFIFG - ACCVIFG
> DW RESET ; 15, 0FFFEh - Reset -
highest priority
> ;-----------------------------
------------------------------
> END ; End of program
> ;-------------------------------
----------------------------
>
>
> ---------------------------------
> Pinpoint customers who are looking for what you sell.
>
>
>
You need to enable general interrupts. EINT in assembler for example.
Otherwise R10 will never get updated.
When general interrupts are enabled it is not sufficient to have an
empty interrupt handler to clear the two timer interrupts that handle
multiple timer interrupt flags.
John Heenan
--- In m..., ermias gebre wrote:
>
> Hello.
> Sorry for disturbing, but I wanted to ask one question that has
been bothering me.if you could please help me, i would really
appreciate it.
> i have a board with msp430f149. the outputs from the board are
timer B1 and A0. The board also has a serial connection with
> the URXD1. what i want to do is control the frequency and
pulsewidth of the timerA and timer B frequency from my computer
> i.e i want to develop a GUI to set the frequency. I wrote an
assembler program for this and i couldn't receive any number from
> the buffer, i know the hardware serial port and everyting is
working fine but i couldn't figure what is wrong and i am stuck.
> Could you please look at my code and give me your inputs.
>
> Thank you and Thank you again.
> Ermias
> #include "msp430x14x.h"
> #define Flash_start 01100h
> #define RAM_end 00200h
>
> ;-------------------------------
------------
> ORG Flash_start ; Progam Start (1K
Flash device)
> ;0FC00h
> ;-------------------------------
------------
> RESET mov.w #RAM_end,SP ; 00A00h Set
stackpointer (128B RAM device)
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop watchdog
timer
> clr.b &P1OUT
> clr.b &P2OUT
> clr.b &P3OUT
> clr.b &P4OUT
> clr.b &P5OUT
> clr.b &P6OUT
> ;eint
> ;BIS.B #RSEL2+RSEL1+RSEL0,&BCSCTL1
> ;BIS.B #DCO0+DCO1+DCO2,&DCOCTL ; Set max DCO
frequency
> BIS.B #DIVM1+DIVM0,&BCSCTL2
> BIS.B #DIVS1+DIVS0,&BCSCTL2
> BIS.B #BIT7,&P4DIR
> BIS #TBCLR,&TBCTL
> MOV #TBSSEL1+ID1+ID0+TBIE,&TBCTL
> MOV #OUTMOD_7+CCIE,&TBCCTL1
> MOV #120,&TBCCR0
> MOV #85,&TBCCR1
> BIS #MC0,&TBCTL
>
> BIS #TACLR,&TACTL
> MOV #TASSEL1+ID1+ID0+TAIE,&TACTL ; Define new
state
> MOV #OUTMOD2+CCIE,&TACCTL0 ; CCR0: toggle TA0
> MOV #189,&TACCR0 ; fccr0 = 20kHz
> BIS #MC0,&TACTL ;Start init. timer.
Up Mode
>
> TAO BIS.B #BIT5,&P1SEL
> BIS.B #BIT5,&P1DIR
> TB1 BIS.B #BIT1,&P4SEL
> BIS.B #BIT1,&P4DIR
> MCLK BIS.B #BIT4,&P5SEL
> mov.b #BIT4,&P5DIR
> SMCLK BIS.B #BIT5,&P5SEL
> BIS.B #BIT5,&P5DIR
> ACLK BIS.B #BIT6,&P5SEL
> BIS.B #BIT6,&P5DIR
> BIS.B #BIT7,&P3SEL
>
> */
> ;------
> BIS.B #SWRST,&U1CTL
> BIS.B #CHAR+MM,&U1CTL
> BIC.B #SYNC,&U1CTL
> BIS.B #SSEL1,&U1TCTL
> MOV.B #03h,&U1BR0
> MOV.B #00h,&U1BR1
> CLR.B &U1MCTL
> BIS.B #URXE1,&ME2
> BIC.B #SWRST,U1CTL
> BIS.B #URXIE1,&IE2
> ;-------------------------------
------------
>
> Main
> ;BIS.B #LPM0,0(SP)
> XOR.B #BIT7,&P4OUT
> JMP Main
> ;-------------------------------
------------
> SPI1R CLR R10
> MOV.B &U1RXBUF,R10
> BIC.B #URXIE1,IE2
> reti
> ;-------------------------------
------------
> ;Timer NOP
> ; reti
> ;-------------------------------
------------
> ; Interrupt Vectors
> ;-------------------------------
------------
> RSEG INTVEC ; Interrupt
Vector Startadress
> DW RESET ; 0, 0FFE0h - Basic
Timer - lowest priority
> DW RESET ; 1, 0FFE2h - I/O Port
P2 (eight flags)
> DW RESET ; 2, 0FFE4h - USART1
Transmit, UTXIFG1
> DW SPI1R ; 3, 0FFE6h - USART1
Receive, URXIFG1
> DW RESET ; 4, 0FFE8h - I/O Port
P1 (eight flags)
> DW Timer ; 5, 0FFEAh - Timer_A3
CCIFG1, CCIFG2, TAIFG
> DW Timer ; 6, 0FFECh - Timer_A3
CCIFG0
> DW RESET ; 7, 0FFEEh - ADC,
ADCIFG
> DW RESET ; 8, 0FFF0h - USART0
Transmit, UTXIFG0
> DW RESET ; 9, 0FFF2h - USART0
Receive, URXIFG0
> DW RESET ; 10, 0FFF4h - Watchdog
Timer - WDTIFG
> DW RESET ; 11, 0FFF6h -
Comparator_A - CAIFG
> DW Timer ; 12, 0FFF8h -
Timer_B7, CCIFG1 to CCIFG6, TBIFG
> DW Timer ; 13, 0FFFAh -
Timer_B7, CCIFG0
> DW RESET ; 14, 0FFFCh - NMIIFG -
OFIFG - ACCVIFG
> DW RESET ; 15, 0FFFEh - Reset -
highest priority
> ;-----------------------------
------------------------------
> END ; End of program
> ;-------------------------------
----------------------------
>
>
> ---------------------------------
> Pinpoint customers who are looking for what you sell.
>
>
>
Reply by ●June 18, 20072007-06-18
When general interrupts are enabled it is not sufficient to have an
empty interrupt handler to clear the two timer interrupts that handle
multiple timer interrupt flags.
>>>>>>
Correct, to clear the timer interrupt you need to read TAIVR/TBIVR.
Just having a NOP in ISR will result in endless timer interrupts.
Best Regards,
Kris
-----Original Message-----
From: m... [mailto:m...] On Behalf Of John Heenan
Sent: Tuesday, 19 June 2007 2:27 AM
To: m...
Subject: [msp430] Re: Serial communication
Hello Ermias
You need to enable general interrupts. EINT in assembler for example.
Otherwise R10 will never get updated.
When general interrupts are enabled it is not sufficient to have an
empty interrupt handler to clear the two timer interrupts that handle
multiple timer interrupt flags.
John Heenan
--- In m..., ermias gebre wrote:
>
> Hello.
> Sorry for disturbing, but I wanted to ask one question that has
been bothering me.if you could please help me, i would really
appreciate it.
> i have a board with msp430f149. the outputs from the board are
timer B1 and A0. The board also has a serial connection with
> the URXD1. what i want to do is control the frequency and
pulsewidth of the timerA and timer B frequency from my computer
> i.e i want to develop a GUI to set the frequency. I wrote an
assembler program for this and i couldn't receive any number from
> the buffer, i know the hardware serial port and everyting is
working fine but i couldn't figure what is wrong and i am stuck.
> Could you please look at my code and give me your inputs.
>
> Thank you and Thank you again.
> Ermias
> #include "msp430x14x.h"
> #define Flash_start 01100h
> #define RAM_end 00200h
>
> ;-------------------------------
------------
> ORG Flash_start ; Progam Start (1K
Flash device)
> ;0FC00h
> ;-------------------------------
------------
> RESET mov.w #RAM_end,SP ; 00A00h Set
stackpointer (128B RAM device)
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop watchdog
timer
> clr.b &P1OUT
> clr.b &P2OUT
> clr.b &P3OUT
> clr.b &P4OUT
> clr.b &P5OUT
> clr.b &P6OUT
> ;eint
> ;BIS.B #RSEL2+RSEL1+RSEL0,&BCSCTL1
> ;BIS.B #DCO0+DCO1+DCO2,&DCOCTL ; Set max DCO
frequency
> BIS.B #DIVM1+DIVM0,&BCSCTL2
> BIS.B #DIVS1+DIVS0,&BCSCTL2
> BIS.B #BIT7,&P4DIR
> BIS #TBCLR,&TBCTL
> MOV #TBSSEL1+ID1+ID0+TBIE,&TBCTL
> MOV #OUTMOD_7+CCIE,&TBCCTL1
> MOV #120,&TBCCR0
> MOV #85,&TBCCR1
> BIS #MC0,&TBCTL
>
> BIS #TACLR,&TACTL
> MOV #TASSEL1+ID1+ID0+TAIE,&TACTL ; Define new
state
> MOV #OUTMOD2+CCIE,&TACCTL0 ; CCR0: toggle TA0
> MOV #189,&TACCR0 ; fccr0 = 20kHz
> BIS #MC0,&TACTL ;Start init. timer.
Up Mode
>
> TAO BIS.B #BIT5,&P1SEL
> BIS.B #BIT5,&P1DIR
> TB1 BIS.B #BIT1,&P4SEL
> BIS.B #BIT1,&P4DIR
> MCLK BIS.B #BIT4,&P5SEL
> mov.b #BIT4,&P5DIR
> SMCLK BIS.B #BIT5,&P5SEL
> BIS.B #BIT5,&P5DIR
> ACLK BIS.B #BIT6,&P5SEL
> BIS.B #BIT6,&P5DIR
> BIS.B #BIT7,&P3SEL
>
> */
> ;------
> BIS.B #SWRST,&U1CTL
> BIS.B #CHAR+MM,&U1CTL
> BIC.B #SYNC,&U1CTL
> BIS.B #SSEL1,&U1TCTL
> MOV.B #03h,&U1BR0
> MOV.B #00h,&U1BR1
> CLR.B &U1MCTL
> BIS.B #URXE1,&ME2
> BIC.B #SWRST,U1CTL
> BIS.B #URXIE1,&IE2
> ;-------------------------------
------------
>
> Main
> ;BIS.B #LPM0,0(SP)
> XOR.B #BIT7,&P4OUT
> JMP Main
> ;-------------------------------
------------
> SPI1R CLR R10
> MOV.B &U1RXBUF,R10
> BIC.B #URXIE1,IE2
> reti
> ;-------------------------------
------------
> ;Timer NOP
> ; reti
> ;-------------------------------
------------
> ; Interrupt Vectors
> ;-------------------------------
------------
> RSEG INTVEC ; Interrupt
Vector Startadress
> DW RESET ; 0, 0FFE0h - Basic
Timer - lowest priority
> DW RESET ; 1, 0FFE2h - I/O Port
P2 (eight flags)
> DW RESET ; 2, 0FFE4h - USART1
Transmit, UTXIFG1
> DW SPI1R ; 3, 0FFE6h - USART1
Receive, URXIFG1
> DW RESET ; 4, 0FFE8h - I/O Port
P1 (eight flags)
> DW Timer ; 5, 0FFEAh - Timer_A3
CCIFG1, CCIFG2, TAIFG
> DW Timer ; 6, 0FFECh - Timer_A3
CCIFG0
> DW RESET ; 7, 0FFEEh - ADC,
ADCIFG
> DW RESET ; 8, 0FFF0h - USART0
Transmit, UTXIFG0
> DW RESET ; 9, 0FFF2h - USART0
Receive, URXIFG0
> DW RESET ; 10, 0FFF4h - Watchdog
Timer - WDTIFG
> DW RESET ; 11, 0FFF6h -
Comparator_A - CAIFG
> DW Timer ; 12, 0FFF8h -
Timer_B7, CCIFG1 to CCIFG6, TBIFG
> DW Timer ; 13, 0FFFAh -
Timer_B7, CCIFG0
> DW RESET ; 14, 0FFFCh - NMIIFG -
OFIFG - ACCVIFG
> DW RESET ; 15, 0FFFEh - Reset -
highest priority
> ;-----------------------------
------------------------------
> END ; End of program
> ;-------------------------------
----------------------------
>
>
> ---------------------------------
> Pinpoint customers who are looking for what you sell.
>
>
>
Yahoo! Groups Links
empty interrupt handler to clear the two timer interrupts that handle
multiple timer interrupt flags.
>>>>>>
Correct, to clear the timer interrupt you need to read TAIVR/TBIVR.
Just having a NOP in ISR will result in endless timer interrupts.
Best Regards,
Kris
-----Original Message-----
From: m... [mailto:m...] On Behalf Of John Heenan
Sent: Tuesday, 19 June 2007 2:27 AM
To: m...
Subject: [msp430] Re: Serial communication
Hello Ermias
You need to enable general interrupts. EINT in assembler for example.
Otherwise R10 will never get updated.
When general interrupts are enabled it is not sufficient to have an
empty interrupt handler to clear the two timer interrupts that handle
multiple timer interrupt flags.
John Heenan
--- In m..., ermias gebre wrote:
>
> Hello.
> Sorry for disturbing, but I wanted to ask one question that has
been bothering me.if you could please help me, i would really
appreciate it.
> i have a board with msp430f149. the outputs from the board are
timer B1 and A0. The board also has a serial connection with
> the URXD1. what i want to do is control the frequency and
pulsewidth of the timerA and timer B frequency from my computer
> i.e i want to develop a GUI to set the frequency. I wrote an
assembler program for this and i couldn't receive any number from
> the buffer, i know the hardware serial port and everyting is
working fine but i couldn't figure what is wrong and i am stuck.
> Could you please look at my code and give me your inputs.
>
> Thank you and Thank you again.
> Ermias
> #include "msp430x14x.h"
> #define Flash_start 01100h
> #define RAM_end 00200h
>
> ;-------------------------------
------------
> ORG Flash_start ; Progam Start (1K
Flash device)
> ;0FC00h
> ;-------------------------------
------------
> RESET mov.w #RAM_end,SP ; 00A00h Set
stackpointer (128B RAM device)
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop watchdog
timer
> clr.b &P1OUT
> clr.b &P2OUT
> clr.b &P3OUT
> clr.b &P4OUT
> clr.b &P5OUT
> clr.b &P6OUT
> ;eint
> ;BIS.B #RSEL2+RSEL1+RSEL0,&BCSCTL1
> ;BIS.B #DCO0+DCO1+DCO2,&DCOCTL ; Set max DCO
frequency
> BIS.B #DIVM1+DIVM0,&BCSCTL2
> BIS.B #DIVS1+DIVS0,&BCSCTL2
> BIS.B #BIT7,&P4DIR
> BIS #TBCLR,&TBCTL
> MOV #TBSSEL1+ID1+ID0+TBIE,&TBCTL
> MOV #OUTMOD_7+CCIE,&TBCCTL1
> MOV #120,&TBCCR0
> MOV #85,&TBCCR1
> BIS #MC0,&TBCTL
>
> BIS #TACLR,&TACTL
> MOV #TASSEL1+ID1+ID0+TAIE,&TACTL ; Define new
state
> MOV #OUTMOD2+CCIE,&TACCTL0 ; CCR0: toggle TA0
> MOV #189,&TACCR0 ; fccr0 = 20kHz
> BIS #MC0,&TACTL ;Start init. timer.
Up Mode
>
> TAO BIS.B #BIT5,&P1SEL
> BIS.B #BIT5,&P1DIR
> TB1 BIS.B #BIT1,&P4SEL
> BIS.B #BIT1,&P4DIR
> MCLK BIS.B #BIT4,&P5SEL
> mov.b #BIT4,&P5DIR
> SMCLK BIS.B #BIT5,&P5SEL
> BIS.B #BIT5,&P5DIR
> ACLK BIS.B #BIT6,&P5SEL
> BIS.B #BIT6,&P5DIR
> BIS.B #BIT7,&P3SEL
>
> */
> ;------
> BIS.B #SWRST,&U1CTL
> BIS.B #CHAR+MM,&U1CTL
> BIC.B #SYNC,&U1CTL
> BIS.B #SSEL1,&U1TCTL
> MOV.B #03h,&U1BR0
> MOV.B #00h,&U1BR1
> CLR.B &U1MCTL
> BIS.B #URXE1,&ME2
> BIC.B #SWRST,U1CTL
> BIS.B #URXIE1,&IE2
> ;-------------------------------
------------
>
> Main
> ;BIS.B #LPM0,0(SP)
> XOR.B #BIT7,&P4OUT
> JMP Main
> ;-------------------------------
------------
> SPI1R CLR R10
> MOV.B &U1RXBUF,R10
> BIC.B #URXIE1,IE2
> reti
> ;-------------------------------
------------
> ;Timer NOP
> ; reti
> ;-------------------------------
------------
> ; Interrupt Vectors
> ;-------------------------------
------------
> RSEG INTVEC ; Interrupt
Vector Startadress
> DW RESET ; 0, 0FFE0h - Basic
Timer - lowest priority
> DW RESET ; 1, 0FFE2h - I/O Port
P2 (eight flags)
> DW RESET ; 2, 0FFE4h - USART1
Transmit, UTXIFG1
> DW SPI1R ; 3, 0FFE6h - USART1
Receive, URXIFG1
> DW RESET ; 4, 0FFE8h - I/O Port
P1 (eight flags)
> DW Timer ; 5, 0FFEAh - Timer_A3
CCIFG1, CCIFG2, TAIFG
> DW Timer ; 6, 0FFECh - Timer_A3
CCIFG0
> DW RESET ; 7, 0FFEEh - ADC,
ADCIFG
> DW RESET ; 8, 0FFF0h - USART0
Transmit, UTXIFG0
> DW RESET ; 9, 0FFF2h - USART0
Receive, URXIFG0
> DW RESET ; 10, 0FFF4h - Watchdog
Timer - WDTIFG
> DW RESET ; 11, 0FFF6h -
Comparator_A - CAIFG
> DW Timer ; 12, 0FFF8h -
Timer_B7, CCIFG1 to CCIFG6, TBIFG
> DW Timer ; 13, 0FFFAh -
Timer_B7, CCIFG0
> DW RESET ; 14, 0FFFCh - NMIIFG -
OFIFG - ACCVIFG
> DW RESET ; 15, 0FFFEh - Reset -
highest priority
> ;-----------------------------
------------------------------
> END ; End of program
> ;-------------------------------
----------------------------
>
>
> ---------------------------------
> Pinpoint customers who are looking for what you sell.
>
>
>
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Reply by ●June 18, 20072007-06-18
Oops, I should also point out that TA0 and TB0 have their own INT vector.
Multiple interrupts come from TA1-2 or TB1-TB6. These are the ones where you need to read IVR,
TBIVR in your case for TB1.
Also, your vectors are wrong - you need separate 4 handlers for TA0, TA1-2, TB0, TB1-6...
Best Regards,
Kris
-----Original Message-----
From: m... [mailto:m...] On Behalf Of Microbit
Sent: Tuesday, 19 June 2007 2:37 AM
To: m...
Subject: RE: [msp430] Re: Serial communication
When general interrupts are enabled it is not sufficient to have an
empty interrupt handler to clear the two timer interrupts that handle
multiple timer interrupt flags.
>>>>>>
Correct, to clear the timer interrupt you need to read TAIVR/TBIVR.
Just having a NOP in ISR will result in endless timer interrupts.
Best Regards,
Kris
-----Original Message-----
From: m... [mailto:m...] On Behalf Of John Heenan
Sent: Tuesday, 19 June 2007 2:27 AM
To: m...
Subject: [msp430] Re: Serial communication
Hello Ermias
You need to enable general interrupts. EINT in assembler for example.
Otherwise R10 will never get updated.
When general interrupts are enabled it is not sufficient to have an
empty interrupt handler to clear the two timer interrupts that handle
multiple timer interrupt flags.
John Heenan
--- In m..., ermias gebre wrote:
>
> Hello.
> Sorry for disturbing, but I wanted to ask one question that has
been bothering me.if you could please help me, i would really
appreciate it.
> i have a board with msp430f149. the outputs from the board are
timer B1 and A0. The board also has a serial connection with
> the URXD1. what i want to do is control the frequency and
pulsewidth of the timerA and timer B frequency from my computer
> i.e i want to develop a GUI to set the frequency. I wrote an
assembler program for this and i couldn't receive any number from
> the buffer, i know the hardware serial port and everyting is
working fine but i couldn't figure what is wrong and i am stuck.
> Could you please look at my code and give me your inputs.
>
> Thank you and Thank you again.
> Ermias
> #include "msp430x14x.h"
> #define Flash_start 01100h
> #define RAM_end 00200h
>
> ;-------------------------------
------------
> ORG Flash_start ; Progam Start (1K
Flash device)
> ;0FC00h
> ;-------------------------------
------------
> RESET mov.w #RAM_end,SP ; 00A00h Set
stackpointer (128B RAM device)
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop watchdog
timer
> clr.b &P1OUT
> clr.b &P2OUT
> clr.b &P3OUT
> clr.b &P4OUT
> clr.b &P5OUT
> clr.b &P6OUT
> ;eint
> ;BIS.B #RSEL2+RSEL1+RSEL0,&BCSCTL1
> ;BIS.B #DCO0+DCO1+DCO2,&DCOCTL ; Set max DCO
frequency
> BIS.B #DIVM1+DIVM0,&BCSCTL2
> BIS.B #DIVS1+DIVS0,&BCSCTL2
> BIS.B #BIT7,&P4DIR
> BIS #TBCLR,&TBCTL
> MOV #TBSSEL1+ID1+ID0+TBIE,&TBCTL
> MOV #OUTMOD_7+CCIE,&TBCCTL1
> MOV #120,&TBCCR0
> MOV #85,&TBCCR1
> BIS #MC0,&TBCTL
>
> BIS #TACLR,&TACTL
> MOV #TASSEL1+ID1+ID0+TAIE,&TACTL ; Define new
state
> MOV #OUTMOD2+CCIE,&TACCTL0 ; CCR0: toggle TA0
> MOV #189,&TACCR0 ; fccr0 = 20kHz
> BIS #MC0,&TACTL ;Start init. timer.
Up Mode
>
> TAO BIS.B #BIT5,&P1SEL
> BIS.B #BIT5,&P1DIR
> TB1 BIS.B #BIT1,&P4SEL
> BIS.B #BIT1,&P4DIR
> MCLK BIS.B #BIT4,&P5SEL
> mov.b #BIT4,&P5DIR
> SMCLK BIS.B #BIT5,&P5SEL
> BIS.B #BIT5,&P5DIR
> ACLK BIS.B #BIT6,&P5SEL
> BIS.B #BIT6,&P5DIR
> BIS.B #BIT7,&P3SEL
>
> */
> ;------
> BIS.B #SWRST,&U1CTL
> BIS.B #CHAR+MM,&U1CTL
> BIC.B #SYNC,&U1CTL
> BIS.B #SSEL1,&U1TCTL
> MOV.B #03h,&U1BR0
> MOV.B #00h,&U1BR1
> CLR.B &U1MCTL
> BIS.B #URXE1,&ME2
> BIC.B #SWRST,U1CTL
> BIS.B #URXIE1,&IE2
> ;-------------------------------
------------
>
> Main
> ;BIS.B #LPM0,0(SP)
> XOR.B #BIT7,&P4OUT
> JMP Main
> ;-------------------------------
------------
> SPI1R CLR R10
> MOV.B &U1RXBUF,R10
> BIC.B #URXIE1,IE2
> reti
> ;-------------------------------
------------
> ;Timer NOP
> ; reti
> ;-------------------------------
------------
> ; Interrupt Vectors
> ;-------------------------------
------------
> RSEG INTVEC ; Interrupt
Vector Startadress
> DW RESET ; 0, 0FFE0h - Basic
Timer - lowest priority
> DW RESET ; 1, 0FFE2h - I/O Port
P2 (eight flags)
> DW RESET ; 2, 0FFE4h - USART1
Transmit, UTXIFG1
> DW SPI1R ; 3, 0FFE6h - USART1
Receive, URXIFG1
> DW RESET ; 4, 0FFE8h - I/O Port
P1 (eight flags)
> DW Timer ; 5, 0FFEAh - Timer_A3
CCIFG1, CCIFG2, TAIFG
> DW Timer ; 6, 0FFECh - Timer_A3
CCIFG0
> DW RESET ; 7, 0FFEEh - ADC,
ADCIFG
> DW RESET ; 8, 0FFF0h - USART0
Transmit, UTXIFG0
> DW RESET ; 9, 0FFF2h - USART0
Receive, URXIFG0
> DW RESET ; 10, 0FFF4h - Watchdog
Timer - WDTIFG
> DW RESET ; 11, 0FFF6h -
Comparator_A - CAIFG
> DW Timer ; 12, 0FFF8h -
Timer_B7, CCIFG1 to CCIFG6, TBIFG
> DW Timer ; 13, 0FFFAh -
Timer_B7, CCIFG0
> DW RESET ; 14, 0FFFCh - NMIIFG -
OFIFG - ACCVIFG
> DW RESET ; 15, 0FFFEh - Reset -
highest priority
> ;-----------------------------
------------------------------
> END ; End of program
> ;-------------------------------
----------------------------
>
>
> ---------------------------------
> Pinpoint customers who are looking for what you sell.
>
>
>
Yahoo! Groups Links
Yahoo! Groups Links
Multiple interrupts come from TA1-2 or TB1-TB6. These are the ones where you need to read IVR,
TBIVR in your case for TB1.
Also, your vectors are wrong - you need separate 4 handlers for TA0, TA1-2, TB0, TB1-6...
Best Regards,
Kris
-----Original Message-----
From: m... [mailto:m...] On Behalf Of Microbit
Sent: Tuesday, 19 June 2007 2:37 AM
To: m...
Subject: RE: [msp430] Re: Serial communication
When general interrupts are enabled it is not sufficient to have an
empty interrupt handler to clear the two timer interrupts that handle
multiple timer interrupt flags.
>>>>>>
Correct, to clear the timer interrupt you need to read TAIVR/TBIVR.
Just having a NOP in ISR will result in endless timer interrupts.
Best Regards,
Kris
-----Original Message-----
From: m... [mailto:m...] On Behalf Of John Heenan
Sent: Tuesday, 19 June 2007 2:27 AM
To: m...
Subject: [msp430] Re: Serial communication
Hello Ermias
You need to enable general interrupts. EINT in assembler for example.
Otherwise R10 will never get updated.
When general interrupts are enabled it is not sufficient to have an
empty interrupt handler to clear the two timer interrupts that handle
multiple timer interrupt flags.
John Heenan
--- In m..., ermias gebre wrote:
>
> Hello.
> Sorry for disturbing, but I wanted to ask one question that has
been bothering me.if you could please help me, i would really
appreciate it.
> i have a board with msp430f149. the outputs from the board are
timer B1 and A0. The board also has a serial connection with
> the URXD1. what i want to do is control the frequency and
pulsewidth of the timerA and timer B frequency from my computer
> i.e i want to develop a GUI to set the frequency. I wrote an
assembler program for this and i couldn't receive any number from
> the buffer, i know the hardware serial port and everyting is
working fine but i couldn't figure what is wrong and i am stuck.
> Could you please look at my code and give me your inputs.
>
> Thank you and Thank you again.
> Ermias
> #include "msp430x14x.h"
> #define Flash_start 01100h
> #define RAM_end 00200h
>
> ;-------------------------------
------------
> ORG Flash_start ; Progam Start (1K
Flash device)
> ;0FC00h
> ;-------------------------------
------------
> RESET mov.w #RAM_end,SP ; 00A00h Set
stackpointer (128B RAM device)
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop watchdog
timer
> clr.b &P1OUT
> clr.b &P2OUT
> clr.b &P3OUT
> clr.b &P4OUT
> clr.b &P5OUT
> clr.b &P6OUT
> ;eint
> ;BIS.B #RSEL2+RSEL1+RSEL0,&BCSCTL1
> ;BIS.B #DCO0+DCO1+DCO2,&DCOCTL ; Set max DCO
frequency
> BIS.B #DIVM1+DIVM0,&BCSCTL2
> BIS.B #DIVS1+DIVS0,&BCSCTL2
> BIS.B #BIT7,&P4DIR
> BIS #TBCLR,&TBCTL
> MOV #TBSSEL1+ID1+ID0+TBIE,&TBCTL
> MOV #OUTMOD_7+CCIE,&TBCCTL1
> MOV #120,&TBCCR0
> MOV #85,&TBCCR1
> BIS #MC0,&TBCTL
>
> BIS #TACLR,&TACTL
> MOV #TASSEL1+ID1+ID0+TAIE,&TACTL ; Define new
state
> MOV #OUTMOD2+CCIE,&TACCTL0 ; CCR0: toggle TA0
> MOV #189,&TACCR0 ; fccr0 = 20kHz
> BIS #MC0,&TACTL ;Start init. timer.
Up Mode
>
> TAO BIS.B #BIT5,&P1SEL
> BIS.B #BIT5,&P1DIR
> TB1 BIS.B #BIT1,&P4SEL
> BIS.B #BIT1,&P4DIR
> MCLK BIS.B #BIT4,&P5SEL
> mov.b #BIT4,&P5DIR
> SMCLK BIS.B #BIT5,&P5SEL
> BIS.B #BIT5,&P5DIR
> ACLK BIS.B #BIT6,&P5SEL
> BIS.B #BIT6,&P5DIR
> BIS.B #BIT7,&P3SEL
>
> */
> ;------
> BIS.B #SWRST,&U1CTL
> BIS.B #CHAR+MM,&U1CTL
> BIC.B #SYNC,&U1CTL
> BIS.B #SSEL1,&U1TCTL
> MOV.B #03h,&U1BR0
> MOV.B #00h,&U1BR1
> CLR.B &U1MCTL
> BIS.B #URXE1,&ME2
> BIC.B #SWRST,U1CTL
> BIS.B #URXIE1,&IE2
> ;-------------------------------
------------
>
> Main
> ;BIS.B #LPM0,0(SP)
> XOR.B #BIT7,&P4OUT
> JMP Main
> ;-------------------------------
------------
> SPI1R CLR R10
> MOV.B &U1RXBUF,R10
> BIC.B #URXIE1,IE2
> reti
> ;-------------------------------
------------
> ;Timer NOP
> ; reti
> ;-------------------------------
------------
> ; Interrupt Vectors
> ;-------------------------------
------------
> RSEG INTVEC ; Interrupt
Vector Startadress
> DW RESET ; 0, 0FFE0h - Basic
Timer - lowest priority
> DW RESET ; 1, 0FFE2h - I/O Port
P2 (eight flags)
> DW RESET ; 2, 0FFE4h - USART1
Transmit, UTXIFG1
> DW SPI1R ; 3, 0FFE6h - USART1
Receive, URXIFG1
> DW RESET ; 4, 0FFE8h - I/O Port
P1 (eight flags)
> DW Timer ; 5, 0FFEAh - Timer_A3
CCIFG1, CCIFG2, TAIFG
> DW Timer ; 6, 0FFECh - Timer_A3
CCIFG0
> DW RESET ; 7, 0FFEEh - ADC,
ADCIFG
> DW RESET ; 8, 0FFF0h - USART0
Transmit, UTXIFG0
> DW RESET ; 9, 0FFF2h - USART0
Receive, URXIFG0
> DW RESET ; 10, 0FFF4h - Watchdog
Timer - WDTIFG
> DW RESET ; 11, 0FFF6h -
Comparator_A - CAIFG
> DW Timer ; 12, 0FFF8h -
Timer_B7, CCIFG1 to CCIFG6, TBIFG
> DW Timer ; 13, 0FFFAh -
Timer_B7, CCIFG0
> DW RESET ; 14, 0FFFCh - NMIIFG -
OFIFG - ACCVIFG
> DW RESET ; 15, 0FFFEh - Reset -
highest priority
> ;-----------------------------
------------------------------
> END ; End of program
> ;-------------------------------
----------------------------
>
>
> ---------------------------------
> Pinpoint customers who are looking for what you sell.
>
>
>
Yahoo! Groups Links
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