Implementation of ESP32-integrated I2C controller with proper bus-device architecture. More...

#include "EspI2c.h"
#include "utils/memory_utils.h"
#include <algorithm>
#include <cstring>
#include "driver/gpio.h"
#include "driver/i2c_master.h"
#include "driver/i2c_types.h"
#include "esp_err.h"
#include "esp_timer.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"

Include dependency graph for EspI2c.cpp:

Macros
#define	USE_CUSTOM_FAST_PROBE 0

Functions
const char *	HfI2COperationToString (hf_i2c_operation_t op) noexcept
	Convert operation type to string for logging.

Variables
static const char *	TAG = "EspI2c"

Detailed Description

Implementation of ESP32-integrated I2C controller with proper bus-device architecture.

This file provides the implementation for I2C bus communication using the ESP32's built-in I2C peripheral with full ESP-IDF v5.5+ capabilities and proper separation of bus and device management following the same pattern as EspSpi.

Key architectural improvements:

Proper bus-device separation matching ESP-IDF v5.5+ API design
EspI2cBus manages the I2C bus and device creation
EspI2cDevice represents individual devices and inherits from BaseI2c
Thread-safe operations with proper resource management
Comprehensive error handling with ESP-IDF error conversion
Per-device statistics and diagnostics
Automatic resource cleanup and lifecycle management

The implementation closely follows ESP-IDF v5.5 I2C Master driver documentation: https://docs.espressif.com/projects/esp-idf/en/release-v5.5/esp32/api-reference/peripherals/i2c.html

Author: Nebiyu Tadesse

Date: 2025

Copyright: HardFOC

Note: Fully compliant with ESP-IDF v5.5 I2C Master driver API; Optimized for ESP32 hardware capabilities; Thread-safe for multi-device I2C bus management; Follows the same architectural pattern as EspSpi

Macro Definition Documentation

◆ USE_CUSTOM_FAST_PROBE

#define USE_CUSTOM_FAST_PROBE 0

Function Documentation

◆ HfI2COperationToString()

const char * HfI2COperationToString ( hf_i2c_operation_t op )

noexcept

Convert operation type to string for logging.

Parameters

op	Operation type

Returns: String representation of operation

Variable Documentation

◆ TAG

const char* TAG = "EspI2c"

static

Macros

Functions