uploaded 1 hour ago
M5Stack M5IOE1 Library
readme
# M5IOE1 ## Overview **SKU:N/A** M5IOE1 is a versatile I2C-based I/O expansion library designed for M5Stack devices, compatible with both Arduino and ESP-IDF frameworks. It significantly extends system capabilities by providing additional digital I/Os with interrupt support, 12-bit ADC channels, PWM outputs, and a built-in NeoPixel LED driver. ## Related Link - N/A ## Required Libraries: - N/A ## Notes ### Include Order (ESP-IDF) If used alongside `M5Unified`, include it **before** `M5IOE1`: ```cpp #include <M5Unified.h> // ✓ must come first #include <M5IOE1.h> ``` ```cpp #include <M5IOE1.h> // ✗ causes i2c_config_t conflict #include <M5Unified.h> ``` > **Why:** On ESP-IDF ≥ 5.3.0 without `CONFIG_I2C_BUS_BACKWARD_CONFIG`, `i2c_bus.h` defines > its own `i2c_config_t`. Including it before `M5Unified` (which pulls in `driver/i2c.h`) > creates a conflicting declaration error. Reversing the order avoids this. > > Alternatively, enable `CONFIG_I2C_BUS_BACKWARD_CONFIG` in menuconfig to remove the restriction. ### i2c_bus mode is not supported when M5GFX / M5Unified is present Use `begin(&M5.In_I2C, addr, freq)` instead — M5GFX already owns the I2C bus and the two drivers cannot share it. ## License - [M5IOE1 - MIT](LICENSE)
Links
Supports all targets
Maintainer
- M5Stack
License: MIT
Tags
To add this component to your project, run:
download archive
idf.py add-dependency "m5stack/m5ioe1^1.0.8"
Stats
-
Archive size ~ 64.86 KB
-
Downloaded in total 9 times
-
This version: 0 times
Badge
