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spi_slave_hd_init() function
Initialize the SPI Slave HD driver.
Syntax
esp_err_t spi_slave_hd_init(spi_host_device_t host_id,
const spi_bus_config_t *bus_config,
const spi_slave_hd_slot_config_t *config);
Return value
- ESP_OK: on success - ESP_ERR_INVALID_ARG: invalid argument given - ESP_ERR_INVALID_STATE: function called in invalid state, may be some resources are already in use - ESP_ERR_NOT_FOUND if there is no available DMA channel - ESP_ERR_NO_MEM: memory allocation failed - or other return value from `esp_intr_alloc`