# Example for `PCF8575` driver ## What it does The example configures a `PCF8575` device. It outputs a pattern (0xaaaa and inverted one) to output ports. ## Wiring Connect an LED and an appropriate resistor to 16 output ports (`P00` to `P17`). Connect `SCL` and `SDA` pins to the following pins with appropriate pull-up resistors. | Name | Description | Defaults | |------|-------------|----------| | `CONFIG_EXAMPLE_I2C_MASTER_SCL` | GPIO number for `SCL` | "5" for `esp8266`, "6" for `esp32c3`, "19" for `esp32`, `esp32s2`, and `esp32s3` | | `CONFIG_EXAMPLE_I2C_MASTER_SDA` | GPIO number for `SDA` | "4" for `esp8266`, "5" for `esp32c3`, "18" for `esp32`, `esp32s2`, and `esp32s3` |
To create a project from this example, run:
idf.py create-project-from-example "esp-idf-lib/pcf8575=1.0.5:default"