esp-gpio-expander 🦀

Description

Example of work with mcp23017 (aka. cjmcu-2317) GPIO expander with Espressif chips. For this example I took a classic pushbutton and tried to connect it with Espressif board via GPIO expander on different Espressif boards:

• ESP32
• ESP32-S2
• ESP32-C3

cjmcu-2317 GPIO expander

Build and flash

Warning

Choose the corresponding options for your chip in Cargo.toml

Build for ESP32

cargo espflash --release --monitor --target xtensa-esp32-none-elf 

Build for ESP32-S2

cargo espflash --release --monitor --target xtensa-esp32s2-none-elf 

Build for ESP32-S3

cargo espflash --release --monitor --target xtensa-esp32s3-none-elf 

Build for ESP32-C3

cargo espflash --release --monitor --target riscv32imac-unknown-none-elf