II2cBus.h

Go to the documentation of this file.

#pragma once
 
#include "cdc_core/IService.h"
#include "esp_err.h"
#include <cstdint>
 
namespace cdc::hal {
 
// Opaque device handle
using I2cDeviceHandle = void*;

class II2cBus : public core::IService {
public:
    virtual ~II2cBus() = default;

    virtual esp_err_t addDevice(uint8_t addr, I2cDeviceHandle* out_dev) = 0;

    virtual esp_err_t writeReg(I2cDeviceHandle dev, uint8_t reg,
                               const uint8_t* data, size_t len) = 0;

    virtual esp_err_t readReg(I2cDeviceHandle dev, uint8_t reg,
                              uint8_t* data, size_t len) = 0;

    virtual esp_err_t writeRaw(uint8_t addr, const uint8_t* data, size_t len) = 0;

    virtual esp_err_t readRaw(uint8_t addr, uint8_t* data, size_t len) = 0;

    virtual esp_err_t writeReadRaw(uint8_t addr, const uint8_t* wr, size_t wr_len,
                                   uint8_t* rd, size_t rd_len) = 0;

    virtual bool probe(uint8_t addr) = 0;

    virtual esp_err_t eepromRead(uint8_t addr, uint16_t offset, uint8_t* buf, size_t len) = 0;

    virtual esp_err_t eepromWrite(uint8_t addr, uint16_t offset, const uint8_t* buf, size_t len) = 0;
};
 
// Factory functions for the two buses
II2cBus* getI2cBus0();  // BQ25895 + TCA9535
II2cBus* getI2cBus1();  // Expansion header
 
} // namespace cdc::hal