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feat(repo): update to i2c-ng driver
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‎.github/workflows/build_test.yml

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build:
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strategy:
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matrix:
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idf_ver: ["release-v5.1", "release-v5.2", "release-v5.3"]
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idf_target: ["esp32", "esp32s2", "esp32c3", "esp32s3"]
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runs-on: ubuntu-20.04
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idf_ver: ["release-v5.4", "release-v5.5"]
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idf_target: ["esp32", "esp32s2", "esp32c3", "esp32s3", "esp32c6", "esp32p4"]
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runs-on: ubuntu-latest
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container: espressif/idf:${{ matrix.idf_ver }}
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steps:
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- uses: actions/checkout@v3

‎CHANGELOG.md

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# ChangeLog
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## v2.0.0 - 2025-07-13
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### Breaking Changes:
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* break(repo): depend on esp-idf v5.4 or later (arduino-esp32 v3.2.0 or later)
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* break(repo): remove legacy header files and macros which are marked as deprecated
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* break(repo): support i2c-ng driver and not compatible with old i2c driver
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## v1.1.1 - 2025-07-07
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### Enhancements:

‎CMakeLists.txt

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REQUIRES
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driver
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)
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target_compile_options(${COMPONENT_LIB}
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PUBLIC
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-Wno-missing-field-initializers
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PRIVATE
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$<$<COMPILE_LANGUAGE:CXX>:-std=gnu++17>
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)

‎README.md

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**Latest Espressif Component Version**: [![Espressif Release](https://components.espressif.com/components/espressif/esp32_io_expander/badge.svg)](https://components.espressif.com/components/espressif/esp32_io_expander)
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# ESP32_IO_Expander
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# ESP IO Expander
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## Overview
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## Table of Contents
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- [ESP32\_IO\_Expander](#esp32_io_expander)
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- [ESP IO Expander](#esp-io-expander)
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- [Overview](#overview)
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- [Table of Contents](#table-of-contents)
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- [Supported Drivers](#supported-drivers)
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| **Driver** | **Version** |
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| ---------------------------------------------------------------------------------------------------- | ----------- |
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| [esp_io_expander](https://components.espressif.com/components/espressif/esp_io_expander) | 1.0.1 |
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| [TCA95XX_8BIT](https://components.espressif.com/components/espressif/esp_io_expander_tca9554) | 1.0.1 |
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| [TCA95XX_16BIT](https://components.espressif.com/components/espressif/esp_io_expander_tca95xx_16bit) | 1.0.0 |
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| [HT8574](https://components.espressif.com/components/espressif/esp_io_expander_ht8574) | 1.0.0 |
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| [TCA95XX_8BIT](https://components.espressif.com/components/espressif/esp_io_expander_tca9554) | 2.0.1 |
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| [TCA95XX_16BIT](https://components.espressif.com/components/espressif/esp_io_expander_tca95xx_16bit) | 2.0.0 |
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| [HT8574](https://components.espressif.com/components/espressif/esp_io_expander_ht8574) | 2.0.0 |
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| CH422G | x |
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## How to Use
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#### Dependencies and Versions
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| **Dependency** | **Version** |
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| ------------------------------------------------------------------ | -------------------- |
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| [esp-idf](https://github.com/espressif/esp-idf) | >= 5.1 |
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| [esp-lib-utils](https://github.com/esp-arduino-libs/esp-lib-utils) | >= 0.1.0 && <= 0.2.0 |
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| **Dependency** | **Version** |
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| ------------------------------------------------------------------ | ----------- |
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| [esp-idf](https://github.com/espressif/esp-idf) | >= 5.4 |
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| [esp-lib-utils](https://github.com/esp-arduino-libs/esp-lib-utils) | 0.2.* |
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#### Adding to Project
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#### Dependencies and Versions
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| **Dependency** | **Version** |
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| ------------------------------------------------------------------ | -------------------- |
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| [arduino-esp32](https://github.com/espressif/arduino-esp32) | >= v3.0.0 |
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| [esp-lib-utils](https://github.com/esp-arduino-libs/esp-lib-utils) | >= 0.1.0 && <= 0.2.0 |
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| **Dependency** | **Version** |
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| ------------------------------------------------------------------ | ------------------- |
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| [arduino-esp32](https://github.com/espressif/arduino-esp32) | >= v3.2.0 |
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| [esp-lib-utils](https://github.com/esp-arduino-libs/esp-lib-utils) | >= 0.2.0 && < 0.3.0 |
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#### Installing the Library
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‎examples/ch422g/ch422g.ino

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#define EXAMPLE_I2C_SDA_PIN (8)
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#define EXAMPLE_I2C_SCL_PIN (9)
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#define EXAMPLE_I2C_ADDR (ESP_IO_EXPANDER_I2C_CH422G_ADDRESS)
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esp_expander::CH422G *expander = NULL;
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delay(1000);
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Serial.println("Test begin");
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expander = new esp_expander::CH422G(EXAMPLE_I2C_SCL_PIN, EXAMPLE_I2C_SDA_PIN, EXAMPLE_I2C_ADDR);
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expander = new esp_expander::CH422G(EXAMPLE_I2C_SCL_PIN, EXAMPLE_I2C_SDA_PIN);
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expander->init();
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expander->begin();
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‎idf_component.yml

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version: "1.1.1"
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version: "2.0.0"
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description: ESP32_IO_Expander is a library designed for driving IO expander chips using ESP SoCs
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url: https://github.com/esp-arduino-libs/ESP32_IO_Expander
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repository: https://github.com/esp-arduino-libs/ESP32_IO_Expander.git
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issues: https://github.com/esp-arduino-libs/ESP32_IO_Expander/issues
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dependencies:
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idf: ">=5.1"
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idf: ">=5.4"
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espressif/esp-lib-utils:
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version: "0.2.*"
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public: true
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public: false

‎library.properties

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name=ESP32_IO_Expander
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version=1.1.1
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version=2.0.0
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author=espressif
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maintainer=espressif
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sentence=ESP32_IO_Expander is a library designed for driving IO expander chips using ESP SoCs

‎micropython.cmake

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# Add the current directory as an include directory.
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target_include_directories(usermod_esp_io_expander INTERFACE ${SRC_DIR})
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# Add compile options. Since the target is not created by `idf_component_register()`, we need to add the `ESP_PLATFORM` define manually.
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target_compile_options(usermod_esp_io_expander
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INTERFACE
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-Wno-missing-field-initializers -DESP_PLATFORM $<$<COMPILE_LANGUAGE:CXX>:-std=gnu++17>
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)
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# Link our INTERFACE library to the usermod target.
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target_link_libraries(usermod INTERFACE usermod_esp_io_expander)

‎src/ESP_IOExpander.h

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‎src/ESP_IOExpander_Library.h

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