nsbum/esp32-mcp23017-demo

Demonstrating an MCP23017 component for ESP32 ESP-IDF

Interfacing an MCP23017 I2C GPIO expander with ESP32

The MCP23017 is an I2C bus GPIO expander. This is an demonstration application for the ESP32 in the ESP-IDF environment.

Usage

To use this application, you must have the ESP-IDF environment installed. After cloning, you will need to run make menuconfig to set up the proper make files and then make flash to flash it onto your device.

Note: The MCP23017 component in this demonstration does not yet support interrupt functionality. Also, the intent isn't really to duplicate Arduino digitalWrite type functionality. After spending a little time with the datasheet and learning how to set and clear bits, you can easily accomplish what you need without trying to emulate Arduino.

esp32-mcp23017-demo's Issues

MCP23017 ESP IDF

hi everyone i try to use MCP2307 module with esp32, that work well for output pin, but i can use it in INPUT mode.

is interrupt fixed ?
and i dont understand too those fonction :

esp_err_t mcp23x17_get_int_out_mode(mcp23x17_t *dev, mcp23x17_int_out_mode_t *mode);
esp_err_t mcp23x17_set_int_out_mode(mcp23x17_t *dev, mcp23x17_int_out_mode_t mode);
esp_err_t mcp23x17_port_get_mode(mcp23x17_t *dev, uint16_t *val);
esp_err_t mcp23x17_port_set_mode(mcp23x17_t *dev, uint16_t val);
esp_err_t mcp23x17_port_read(mcp23x17_t *dev, uint16_t *val);