i2cmemtst.c

来自「* Use 10 MHz crystal frequency. * Use 」· C语言 代码 · 共 71 行

#include "config.h"
#include "serial.c"
#include "serio.c"
#include "delay.h"
#include "i2cmsu.c"
#include "i2c_memutil.c"

#define EEPROM 0xA0

  
unsigned char membuf[BLKSIZE];
unsigned int memaddr;

void main(void){
  unsigned char mode,i;

  serial_init(95,1); // 19200 in HSPLL mode, crystal = 7.3728 MHz

  if (!RI) {
    RI = 1;
    printf("Software reset!");pcrlf();
    if (i2c_errstat) i2c_print_err();
  }
  if (!TO) {
    printf("Watchdog timer reset has occurred.\n");
    pcrlf();
    if (i2c_errstat) i2c_print_err();
  }

  i2c_init(73); // ~100 kHz @ FOSC = 29.4912 MHz

  pcrlf();  printf("I2C Mem Test Started");  pcrlf();
  SWDTEN = 1;  // enable watchdog timer

  memaddr = 0;
  printf ("Enter 'w' for write mode, anything else reads: ");
  mode = getche();
  pcrlf();

  while(1) {
    if (mode == 'w') {

      printf("Enter %d chars.",BLKSIZE);pcrlf();
      for(i = 0;i< BLKSIZE;i++) {
	membuf[i] = getche();
      }
      pcrlf();printf("Doing Write");pcrlf();
      // write same string twice to check Write Busy polling
      i2c_memwrite(EEPROM,memaddr,(unsigned char *)membuf); // do write
      memaddr = memaddr +BLKSIZE;
      i2c_memwrite(EEPROM,memaddr,membuf); // do write
      memaddr = memaddr +BLKSIZE;
    } else {
      i2c_memread(EEPROM,memaddr,membuf); // do read
      for(i = 0;i< BLKSIZE;i++) putch(membuf[i]);
      pcrlf();
      printf("Any key continues read...");pcrlf();
      getch();
      memaddr = memaddr + BLKSIZE;
    }
  }
}