Function esp_idf_svc::sys::spi_device_get_trans_result

pub unsafe extern "C" fn spi_device_get_trans_result(
    handle: *mut spi_device_t,
    trans_desc: *mut *mut spi_transaction_t,
    ticks_to_wait: u32,
) -> i32

@brief Get the result of a SPI transaction queued earlier by spi_device_queue_trans.

This routine will wait until a transaction to the given device succesfully completed. It will then return the description of the completed transaction so software can inspect the result and e.g. free the memory or re-use the buffers.

@param handle Device handle obtained using spi_host_add_dev @param trans_desc Pointer to variable able to contain a pointer to the description of the transaction that is executed. The descriptor should not be modified until the descriptor is returned by spi_device_get_trans_result. @param ticks_to_wait Ticks to wait until there’s a returned item; use portMAX_DELAY to never time out. @return - ESP_ERR_INVALID_ARG if parameter is invalid - ESP_ERR_NOT_SUPPORTED if flag SPI_DEVICE_NO_RETURN_RESULT is set - ESP_ERR_TIMEOUT if there was no completed transaction before ticks_to_wait expired - ESP_OK on success