twi (i2c) + lpc2378

[black-scorpion]

سلام من کد زیر رو برای ارسال دیتا بر روی ایپرام نوشتم اما هیچی روی اپیرام نوشته نمیشه، سخت افزار درسته و همینطور آدرس سخت افزاری و من مطمئن هستم مشکل از نرم افزارم هست. با تشکر

[left]
#include <LPC23xx.h>
#include <irq.h>
#include <target.h>
#include "uart.h"
#include <swi.h>
#include <stdio.h>
#include "type.h"


unsigned int I2C_sla;
unsigned int I2C_adr;
unsigned char *I2C_buf;
unsigned char data_buf[8] = {0x62,0x61,0x68,0x61,0x64,0x6F,0x72,0x20};
unsigned char data_read[8];
unsigned int read;
unsigned int I2C_num;
unsigned int i;

void delay(int);
void twi_write(unsigned char id, unsigned int address, unsigned char *s, unsigned int num);
void i2c_init(void);
void i2c_isr(void);

int main (void)
{

	PINSEL6 = 0x00000000;
	FIO3DIR0 = 0xFF;

	PCONP |= (1 << 19);

	FIO3CLR0 = 0xff;
	FIO3SET0 = 1;
	uart_init();

	putcharx(0x42);

	FIO3CLR0 = 0xff;
	FIO3SET0 = 2;

	init_VIC();

	FIO3CLR0 = 0xff;
	FIO3SET0 = 3;

	install_irq(I2C1_INT, i2c_isr, LOWEST_PRIORITY);

	FIO3CLR0 = 0xff;
	FIO3SET0 = 4;

	IntEnable();

	FIO3CLR0 = 0xff;
	FIO3SET0 = 5;

	//printf("writing to eeprom...");

	FIO3CLR0 = 0xff;
	FIO3SET0 = 6;

	i2c_init();

	FIO3CLR0 = 0xff;
	FIO3SET0 = 7;

	for(i=1;i<9;i++)
	{
	twi_write(0xA0, i, data_buf, 8);
	delay(10);
	}

		for(i=0;i<8;i++)
	{
	putcharx(data_read[i]);
	FIO3CLR0 = 0xff;
	FIO3SET0 = data_read[i];
	delay(100);
	}



	FIO3CLR0 = 0xff;
	FIO3SET0 = 0xFF;
	while(1);
}

void i2c_isr(void)
{
	FIO3CLR0 = 0xff;
	FIO3SET0 = 0x55;
	switch(I21STAT & 0xF8)
	{
	case (0x08):

		if(read == 1) //SLA + R
		{
		I21DAT = I2C_sla & 0xFE;
		}
		else //SLA + W
		{
		I21DAT = I2C_sla;
		}
		I21CONCLR =	(1 << 3)|						/* SI 						*/
		   	  (1 << 5);						/* STA 						*/
	break;

	case (0x10):

		I21DAT = I2C_sla;
		I21CONCLR = 0x28;

	//slave address + W, ACK
	case (0x18):
	case (0x28):

		if (I2C_num > 0)
		{
			I21DAT = *I2C_buf++;
		  I21CONCLR = 0x28;					/*STA 				*/
		  I2C_num--;
		}
		else
		{
			I21CONSET = (1 << 4);				/* STO 						*/
			I21CONCLR = 0x28;					/* STA 				*/

		 }
	break;

	default:
	break;
	}
	I21CONCLR = 0x08; // clear I2C interrupt flag
	VICVectAddr = 0x00;
}


void delay(int x)
{
 int j;
 x = x * 10000;
 for(j=0;j<x;j++);
}

void twi_write(unsigned char id, unsigned int address, unsigned char *s, unsigned int num)
{

	I2C_sla = id;
	I2C_adr = address;
	I2C_num   = num;
	I2C_buf = s;
	read	= 0;

	I21CONCLR = 	(1 << 2)|	/* AA 	*/
				  (1 << 3)|	/* SI 	*/
				  (1 << 5);	/* STA 	*/

	I21CONSET = 	(1 << 5)|	/* STA 	*/
				  (1 << 6);	/* I2CEN*/

	delay(10);
}


void i2c_init()
{
	//I2Cbitfrequency = 	fPCLK / (2CSCLH + I2CSCLL)
	PINSEL0 |= 0x0000000F;	// set P0.0 and P0.1 to I2C1 SDA and SCK
	I21SCLL = (Fpclk / 200000 + 1) / 2;
	I21SCLH = (Fpclk / 200000) / 2;
	I21CONCLR = 0x000000FF;
	I21CONSET = 0x00000040;
}

[/left]

[kasper]

پاسخ : twi (i2c) + lpc2378

سلام
اگه ممکنه کل پروژه رو پلود کنید تا بتستیم با Jlink
آخه چند تا هدر include کردی که معلوم نیست توشون چی کار کردی
اگه jlink داری خودتم میتونی بتستی
اسم آی سی EEPROM هم بگید