ds182x.h

来自「ds18b20 thermometer with lcd, ds18b20 th」· C头文件 代码 · 共 56 行

#ifndef _DEV_BOARD_DS182X_H
#define _DEV_BOARD_DS182X_H

#include <string.h>

#ifndef __IMAGECRAFT__
#include <avr/io.h>
#include <avr/pgmspace.h>
#endif

#include <sys/atom.h>
#include <stdio.h>
#include "types.h"

#define DQ           PORTA1  /* 1-wire thermometer is connected to PA0 */

#define DS_PORT      PORTA
#define DS_PIN       PINA
#define DS_DDR       DDRA

#define MAX_SEARCH   20      /* max # of attempts to find devices on a 1-wire bus */
#define MAX_CHIP     5

#define MULTI_DEVICE 1       /* set 1 if you have more than one device on a 1-wire bus
                              * set 0 if you have only one device on a 1-wire bus
                              */

#define DS_DEBUG     0       /* set 1 to display debugging information
                              * set 0 to suppress debugging information
                              */

#ifndef _NOP
#define _NOP() asm volatile ("nop\n\t"::)
#endif

 void TM_Convert_temperature(u_char idx, u_int *temp, u_int *frac);
 u_int TM_Read_temperature(u_char idx);
  void TM_Sample_temperature(u_char idx);
u_char TM_Init(void);
  void TM_Scan(void);

/*
 *  Auxilliary routines
 *
 *    - normally used only internally
 *    - can be used e.g. if device inventory required
 */
u_char TM_Search_next(u_char *ptr);
u_char TM_Search_rom(u_char *ptr);
u_char TM_Read_rom(u_char *ptr);
void TM_Delay(u_char cnt);
u_char TM_Crc(u_char crc, u_char inp);

#endif