hal_i2c.h

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/*
 * Copyright (c) 2015-2016, Freescale Semiconductor, Inc.
 * Copyright (c) 2016-2017 NXP
 * Copyright (c) 2020 Bjarne Hansen
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 * 
 *  Modified for Espressif ESP environment
 */
 
#ifndef __HAL_I2C_H
#define __HAL_I2C_H
 
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <stdint.h>
#include <stdbool.h>
 
#include "driver_sensors_types.h"
 
#ifndef I2C_ERROR_OK
    #define I2C_ERROR_OK (0)  //not defined in ESP8266 Wire library, but is in the ESP32 version
#endif
 
/*******************************************************************************
 * API
 ******************************************************************************/
 
//TODO put these in a class
bool I2CInitialize(int pin_sda, int pin_scl);
bool I2CReadByte(uint8_t address, uint8_t reg, uint8_t *destination);
bool I2CReadBytes(uint8_t address, uint8_t reg, uint8_t *destination, int num_bytes);
bool I2CWriteByte(uint8_t address, uint8_t reg, uint8_t value);
bool I2CWriteBytes(uint8_t address, uint8_t reg, const uint8_t *value,
                unsigned int num_bytes);
 
int8_t Sensor_I2C_Write_List(registerDeviceInfo_t *devInfo,
                         uint16_t slaveAddress,
                         const registerwritelist_t *pRegWriteList);
 
int32_t Sensor_I2C_Read(registerDeviceInfo_t *devInfo,
                        uint16_t slaveAddress,
                        const registerReadlist_t *pReadList,
                        uint8_t *pOutBuffer);
 
int32_t Sensor_I2C_Read_Register(registerDeviceInfo_t *devInfo,
                          uint16_t peripheralAddress, uint8_t offset,
                          uint8_t length, uint8_t *pOutBuffer);
 
 
#ifdef __cplusplus
}
#endif
 
                          
#endif /* __HAL_I2C_H */