need help to work with ARM at91sam7x256

The Keil IDE has example programs for the AT91SAM7S256. That was the basis for the instrument development I implemented. There are several examples provided.

Jerry

From: A... [mailto:A...] On Behalf Of nixxterlid
Sent: Thursday, October 02, 2008 12:21 PM
To: A...
Subject: [AT91SAM] Re: need help to work with ARM at91sam7x256

i really desperate trying right now. n i'm totally stuck..
i dont know what should i know now..
i've tried to follow each step on the rowley crosswork but i came out of nothing at all..
can anyone give me a real SIMPLE CODING (for example displaying hello message), with appropriate SIMULATOR..i've tried to search everywhere but my worst i couldn't find any.. Start a New Thread

That really does look extremely simple :-)

Best Regards,
Kris
________________________________________
From: A... [mailto:A...] On Behalf Of
Tony Brenke
Sent: Friday, 3 October 2008 12:55 PM
To: A...
Subject: {Disarmed} Re: [AT91SAM] Re: need help to work with ARM
at91sam7x256

simple PWM led using Rowley

// This program shows how to work whit SPI interface and
// connected to it multimedia card
// Programs read/write buffer to MMC card
#define __inline inline
#include
#include
#include "board.h"
#include "system.h"
#include
#include "avrage.h"
#include "usart.h"
#include "adc.h"
#include
#include

#pragma data_alignment=4

//MAIN POINTER
AT91PS_PIO m_pPio = AT91C_BASE_PIOA;

//local SUB
void set_directionl(char val);
void set_directionr(char val);


//global var
unsigned char outstr[80];
unsigned char counter;
unsigned int adcval;
float V;

#define TWI_BUS_CLOCK 400000 /* in Hz*/

/* value of the PIT value to have 333ns @ 48 MHz
668 -1 since real time out = PIV + 1 */
#define PIT_PIV_MILI_SECOND_VALUE 0x667

/* value of the PIT value to have 333ns @ 48 MHz
3 -1 since real time out = PIV + 1 */
#define PIT_PIV_MICRO_SECOND_VALUE 0x2


int main()
{
int counter=0;
int ret;
int state;

// System init
InitFrec();

//setup IO
InitPeriphery();

// START PWM setup
AT91F_PWM_CfgPMC();// enable clock
AT91F_PWM_CH0_CfgPIO();
AT91F_PWM_CH1_CfgPIO();

AT91F_PIO_CfgOutput(P23);//disable PWM
AT91F_PIO_CfgOutput(P11);//disable PWM
AT91F_PIO_CfgOutput(P24);//disable PWM
AT91F_PIO_CfgOutput(P12);//disable PWM

AT91F_PIO_CfgOutput(P7);//direction lines Left
AT91F_PIO_CfgOutput(P2);//direction lines Right


AT91F_PWM_CfgChannel(AT91C_PWMC_CHID0, (int)(10|1<<8), 100, 50);
AT91F_PWM_CfgChannel(AT91C_PWMC_CHID1, (int)(10|1<<8), 100, 50);

AT91F_PWM_StartChannel(AT91C_PWMC_CHID0);
AT91F_PWM_StartChannel(AT91C_PWMC_CHID1);

// end PWM setup




// setup adc
InitADC();

// setup usart0
// InitUSART0(115200);
// setup usart1
InitUSART1(115200);

// setup RTS Interupt for COM0
init_PIO_interupt();

// config TWI
AT91F_TWI_Open(TWI_BUS_CLOCK);

counter= AT91F_WDTGetPeriod(30);
AT91F_WDTSetMode ( AT91C_WDTC_WDRSTEN | AT91C_WDTC_WDRPROC|counter);
AT91F_WDTC_CfgPMC();




AT91F_PIO_CfgOutput(P12);
AT91F_PIO_ClearOutput(P12);

AT91F_PIO_CfgOutput(P31);
AT91F_PIO_SetOutput(P31);
AT91F_PIO_ClearOutput(P31);
AT91F_PIO_SetOutput(P31);
__enable_interrupt();
printf("Start 1\r");


printf("end\r");
set_directionl(0);
set_directionr(0);

set_directionl(1);
set_directionr(1);

counter =0;
wait_m(150);

while(1){
AT91F_WDTRestart();
counter++;
AT91F_PWM_UpdateChannel(AT91C_PWMC_CHID0,counter);
printf("Counter %u\r",counter);
AT91F_PIO_SetOutput(P31);
AT91F_PWM_UpdateChannel(AT91C_PWMC_CHID1,500);

wait_m(250);
AT91F_PIO_ClearOutput(P31);
AT91F_PWM_UpdateChannel(AT91C_PWMC_CHID1,0);
wait_m(250);

}
}



void set_directionl(char val){
if(val==1){
AT91F_PIO_SetOutput(P7);
}
else{
AT91F_PIO_ClearOutput(P7);
}
};

void set_directionr(char val){
if(val==1){
AT91F_PIO_SetOutput(P2);
}
else{
AT91F_PIO_ClearOutput(P2);
}
};





----- Original Message -----
From: nixxterlid
To: A...
Sent: Thursday, October 02, 2008 10:20 AM
Subject: [AT91SAM] Re: need help to work with ARM at91sam7x256

i really desperate trying right now. n i'm totally stuck..
i dont know what should i know now..
i've tried to follow each step on the rowley crosswork but i came out of
nothing at all..
can anyone give me a real SIMPLE CODING (for example displaying hello
message), with appropriate SIMULATOR..i've tried to search everywhere but my
worst i couldn't find any..

________________________________________

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9:05 AM

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