f_14_13_temptst.c

来自「* Use 10 MHz crystal frequency. * Use 」· C语言 代码 · 共 47 行

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


void main(void){
  unsigned char mode;
  signed int temp2;
  signed int temp_c, temp_f;

  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("Temp Sensor Test Started");  pcrlf();
  SWDTEN = 1;  // enable watchdog timer
  // set one shot mode
  ds1621_send1(ACCESS_CONFIG,0x01);
  while(1) {
    // start conversion
    ds1621_send0(START_CONVERT);
    //wait for end
    do{
      mode = ds1621_read1(ACCESS_CONFIG);
    }
    while(!bittst(mode,7));
    ds1621_read2(READ_TEMP,(unsigned char *)&temp2);
    temp_c = (temp2 >> 8);
    temp_f = (temp_c*9)/5 + 32;
    pcrlf();
    printf("Temp read: %x (16 bits), %d (C), %d (F)",
      temp2,temp_c,temp_f);
    // wait for key input for next conv.
    getch(); 
  }
}