Implementation of the PCAL6416A expander chip with esp_io_expander component.
Chip | Communication interface | Component name | Link to datasheet |
---|---|---|---|
PCAL6416A | I2C | esp_io_expander_pcax6416a_16bit | datasheet |
Packages from this repository are uploaded to Espressif's component service.
You can add them to your project via idf.py add-dependency
, e.g.
idf.py add-dependency esp_io_expander_pcal6416a_16bit==1.0.0
Alternatively, you can create idf_component.yml
. More is in Espressif's documentation.
Creation of the component.
esp_io_expander_handle_t io_expander = NULL;
esp_io_expander_new_i2c_pcal6416a_16bit(1, ESP_IO_EXPANDER_I2C_PCAL6416A_ADDRESS_0, &io_expander);
Set pin 0 and pin 1 with output dircetion and low level:
esp_io_expander_set_dir(io_expander, IO_EXPANDER_PIN_NUM_0 | IO_EXPANDER_PIN_NUM_1, IO_EXPANDER_OUTPUT);
esp_io_expander_set_level(io_expander, IO_EXPANDER_PIN_NUM_0 | IO_EXPANDER_PIN_NUM_1, 0);
Print all pins's status to the log:
esp_io_expander_print_state(io_expander);