tm_stm32f4_onewire.h

#ifndef TM_ONEWIRE_H
#define TM_ONEWIRE_H 210

/* C++ detection */
#ifdef __cplusplus
extern C {
#endif

#include "stm32f4xx.h"
#include "stm32f4xx_rcc.h"
#include "stm32f4xx_gpio.h"
#include "defines.h"
#include "tm_stm32f4_delay.h"
#include "tm_stm32f4_gpio.h"

/* OneWire delay */
#define ONEWIRE_DELAY(x)                Delay(x)

/* Pin settings */
#define ONEWIRE_LOW(structure)          TM_GPIO_SetPinLow((structure)->GPIOx, (structure)->GPIO_Pin)
#define ONEWIRE_HIGH(structure)         TM_GPIO_SetPinHigh((structure)->GPIOx, (structure)->GPIO_Pin)
#define ONEWIRE_INPUT(structure)        TM_GPIO_SetPinAsInput(structure->GPIOx, (structure)->GPIO_Pin)
#define ONEWIRE_OUTPUT(structure)       TM_GPIO_SetPinAsOutput(structure->GPIOx, (structure)->GPIO_Pin)

/* OneWire commands */
#define ONEWIRE_CMD_RSCRATCHPAD         0xBE
#define ONEWIRE_CMD_WSCRATCHPAD         0x4E
#define ONEWIRE_CMD_CPYSCRATCHPAD       0x48
#define ONEWIRE_CMD_RECEEPROM           0xB8
#define ONEWIRE_CMD_RPWRSUPPLY          0xB4
#define ONEWIRE_CMD_SEARCHROM           0xF0
#define ONEWIRE_CMD_READROM             0x33
#define ONEWIRE_CMD_MATCHROM            0x55
#define ONEWIRE_CMD_SKIPROM             0xCC

typedef struct {
    GPIO_TypeDef* GPIOx;           
    uint16_t GPIO_Pin;             
    uint8_t LastDiscrepancy;       
    uint8_t LastFamilyDiscrepancy; 
    uint8_t LastDeviceFlag;        
    uint8_t ROM_NO[8];             
} TM_OneWire_t;

void TM_OneWire_Init(TM_OneWire_t* OneWireStruct, GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);

uint8_t TM_OneWire_Reset(TM_OneWire_t* OneWireStruct);

uint8_t TM_OneWire_ReadByte(TM_OneWire_t* OneWireStruct);

void TM_OneWire_WriteByte(TM_OneWire_t* OneWireStruct, uint8_t byte);

void TM_OneWire_WriteBit(TM_OneWire_t* OneWireStruct, uint8_t bit);

uint8_t TM_OneWire_ReadBit(TM_OneWire_t* OneWireStruct);

uint8_t TM_OneWire_Search(TM_OneWire_t* OneWireStruct, uint8_t command);

void TM_OneWire_ResetSearch(TM_OneWire_t* OneWireStruct);

uint8_t TM_OneWire_First(TM_OneWire_t* OneWireStruct);

uint8_t TM_OneWire_Next(TM_OneWire_t* OneWireStruct);

uint8_t TM_OneWire_GetROM(TM_OneWire_t* OneWireStruct, uint8_t index);

void TM_OneWire_GetFullROM(TM_OneWire_t* OneWireStruct, uint8_t *firstIndex);

void TM_OneWire_Select(TM_OneWire_t* OneWireStruct, uint8_t* addr);

void TM_OneWire_SelectWithPointer(TM_OneWire_t* OneWireStruct, uint8_t* ROM);

uint8_t TM_OneWire_CRC8(uint8_t* addr, uint8_t len);

/* C++ detection */
#ifdef __cplusplus
}
#endif

#endif