pub unsafe extern "C" fn spi_slave_free(
    host: spi_host_device_t
) -> esp_err_t
Expand description

@brief Free a SPI bus claimed as a SPI slave interface

@param host SPI peripheral to free @return - ESP_ERR_INVALID_ARG if parameter is invalid - ESP_ERR_INVALID_STATE if not all devices on the bus are freed - ESP_OK on success