TCA9535 ESP32 Example

• This example will show you how to use TCA9535 I2C I/O Expander:

  • read register data
  • write register data

• Pin assignment:

  • GPIO33 is assigned as the data signal of i2c slave port
  • GPIO9 is assigned as the clock signal of i2c slave port
  • GPIO39 is assigned to INT output of TCA9535. This functionality is not used in this example