tm_stm32f4_ds18b20.h

#ifndef TM_DS18B20_H
#define TM_DS18B20_H 200

#include "stm32f4xx.h"
#include "tm_stm32f4_onewire.h"
#include "defines.h"

/* OneWire version check */
#if TM_ONEWIRE_H < 200
#error "Please update TM ONEWIRE LIB, minimum required version is 2.0.0. Download available on stm32f4-discovery.com website"
#endif

/* Every onewire chip has different ROM code, but all the same chips has same family code */
/* in case of DS18B20 this is 0x28 and this is first byte of ROM address */
#define DS18B20_FAMILY_CODE             0x28
#define DS18B20_CMD_ALARMSEARCH         0xEC

/* DS18B20 read temperature command */
#define DS18B20_CMD_CONVERTTEMP         0x44    /* Convert temperature */
#define DS18B20_DECIMAL_STEPS_12BIT     0.0625
#define DS18B20_DECIMAL_STEPS_11BIT     0.125
#define DS18B20_DECIMAL_STEPS_10BIT     0.25
#define DS18B20_DECIMAL_STEPS_9BIT      0.5

/* Bits locations for resolution */
#define DS18B20_RESOLUTION_R1           6
#define DS18B20_RESOLUTION_R0           5

/* CRC enabled */
#ifdef DS18B20_USE_CRC  
#define DS18B20_DATA_LEN                9
#else
#define DS18B20_DATA_LEN                2
#endif

typedef enum {
    TM_DS18B20_Resolution_9bits = 9,   
    TM_DS18B20_Resolution_10bits = 10, 
    TM_DS18B20_Resolution_11bits = 11, 
    TM_DS18B20_Resolution_12bits = 12  
} TM_DS18B20_Resolution_t;

uint8_t TM_DS18B20_Start(TM_OneWire_t* OneWireStruct, uint8_t* ROM);

void TM_DS18B20_StartAll(TM_OneWire_t* OneWireStruct);

uint8_t TM_DS18B20_Read(TM_OneWire_t* OneWireStruct, uint8_t* ROM, float* destination);

uint8_t TM_DS18B20_GetResolution(TM_OneWire_t* OneWireStruct, uint8_t* ROM);

uint8_t TM_DS18B20_SetResolution(TM_OneWire_t* OneWireStruct, uint8_t* ROM, TM_DS18B20_Resolution_t resolution);

uint8_t TM_DS18B20_Is(uint8_t* ROM);

uint8_t TM_DS18B20_SetAlarmHighTemperature(TM_OneWire_t* OneWireStruct, uint8_t* ROM, int8_t temp);

uint8_t TM_DS18B20_SetAlarmLowTemperature(TM_OneWire_t* OneWireStruct, uint8_t* ROM, int8_t temp);

uint8_t TM_DS18B20_DisableAlarmTemperature(TM_OneWire_t* OneWireStruct, uint8_t* ROM);

uint8_t TM_DS18B20_AlarmSearch(TM_OneWire_t* OneWireStruct);

uint8_t TM_DS18B20_AllDone(TM_OneWire_t* OneWireStruct);

#endif