main.cpp

LPCARM之I2C中断读写CAT1025C++程序祥解 LPCARM之I2C中断读写CAT1025C++程序祥解

/*--------------------------------------------------------------------------
    LPCARM之I2C中断读写CAT1025 C++程序祥解

本例程可以做为通用串行EEPROM读写或SMBus总线操作基础参考(祥见SMBus程序祥解)。

菜地公告：引用本文必须注明出处！！！
菜农HotPower 2007.3.11 于西安大雁塔菜地 http://HotPower.21ic.org/
---------------------------------------------------------------------------*/

#include "LPC213XDEF.h"
#include "main.h"
#include <string.h>
#include <stdio.h>

__noinit__ UartObj Uart; 
__noinit__ I2cObj I2c; 
/*-----------------------------------
     串口0中断服务程序
-----------------------------------*/
extern "C" void IRQ_UART0 (void) __irq
{
  Uart.UartExec();
  VIC->VectAddr = 0x00;		/* 通知VIC中断处理结束							*/
}

extern "C" void IRQ_I2C0 (void) __irq
{
  I2c.Exec();
  VIC->VectAddr = 0x00;		/* 通知VIC中断处理结束							*/
}


int main (void) {
unsigned int i, j, error = 0;
char str[32];
unsigned char state, ptr[256];
  Uart.puts("LPCARM之I2C中断读写CAT1025 C++程序 HotPower\n");
  Uart.Wait();
  for(i = 0;i < 16; i ++) {
    for(j = 0;j < 16; j ++) {
      I2c.TxBuffer[j] = i* 16 + j;
	}
    state = I2c.WriteBlock(i * 16, 16);
    switch (state) {
      case I2C_BUS_OK:
//	       Uart.puts("页写成功\n");
	       break;
      case I2C_BUS_ERROR:
	       error ++;
           sprintf(str, "%02d页写失败 state = %02X Count = %d\n", i, I2c.state, I2c.Count);
	       Uart.puts(str);
	       break;
    }
  }
  if (error == 0) {
    Uart.puts("全部16个页写成功！！！\n");
  }
  for(i = 0;i < 16; i ++) {
    state = I2c.ReadBlock(i * 16, 16);
    switch (state) {
      case I2C_BUS_OK:
//	       Uart.puts("页读成功\n");
           for(j = 0;j < 16; j ++) {
		     ptr[i * 16 + j] = I2c.RxBuffer[j];
		   }
	       break;
      case I2C_BUS_ERROR:
           sprintf(str, "%02d页读失败 state = %02X Count = %d\n", i, I2c.state, I2c.Count);
	       Uart.puts(str);
	       break;
	  default:
           sprintf(str, "state = %02X Count = %d\n", I2c.state, I2c.Count);
	       Uart.puts(str);
    }
  }
  Uart.Wait();
  for(i = 0;i < 16; i ++) {
    sprintf(str, "0x%04X: ", i * 16);
    Uart.puts(str);
    for(j = 0;j < 16; j ++) {
      sprintf(str, "%02X ", ptr[i * 16 + j]);
      Uart.puts(str);
    }
	Uart.puts("\n");
    Uart.Wait();//等待串口数据发送结束才能操作IAP
  }
  while(1) {
  }
}