* Add i2c slave example from https://github.com/vmilea/pico_i2c_slave To test you need to wire pin GP4 to GP6 (SDA), and pin GP5 to GP7 (SCL)
* Add i2c slave example from https://github.com/vmilea/pico_i2c_slave To test you need to wire pin GP4 to GP6 (SDA), and pin GP5 to GP7 (SCL)