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rmt: const callback event data

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This commit is contained in:
morris
2022-07-21 15:41:01 +08:00
parent 741b031e83
commit 9a921ada7f
6 changed files with 20 additions and 20 deletions
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docs/en/api-reference/peripherals/rmt.rst
+8 -8
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@@ -304,21 +304,21 @@ The receiver will be stopped by the driver when it finishes working (i.e. receiv
.. code:: c
static bool example_rmt_rx_done_callback(rmt_channel_handle_t channel, rmt_rx_done_event_data_t *edata, void *user_data)
static bool example_rmt_rx_done_callback(rmt_channel_handle_t channel, const rmt_rx_done_event_data_t *edata, void *user_data)
{
BaseType_t high_task_wakeup = pdFALSE;
TaskHandle_t task_to_notify = (TaskHandle_t)user_data;
QueueHandle_t receive_queue = (QueueHandle_t)user_data;
// send the received RMT symbols to the parser task
xTaskNotifyFromISR(task_to_notify, (uint32_t)edata, eSetValueWithOverwrite, &high_task_wakeup);
xQueueSendFromISR(receive_queue, edata, &high_task_wakeup);
// return whether any task is woken up
return high_task_wakeup == pdTRUE;
}
TaskHandle_t cur_task = xTaskGetCurrentTaskHandle();
QueueHandle_t receive_queue = xQueueCreate(1, sizeof(rmt_rx_done_event_data_t));
rmt_rx_event_callbacks_t cbs = {
.on_recv_done = example_rmt_rx_done_callback,
};
ESP_ERROR_CHECK(rmt_rx_register_event_callbacks(rx_channel, &cbs, cur_task));
ESP_ERROR_CHECK(rmt_rx_register_event_callbacks(rx_channel, &cbs, receive_queue));
// the following timing requirement is based on NEC protocol
rmt_receive_config_t receive_config = {
@@ -330,10 +330,10 @@ The receiver will be stopped by the driver when it finishes working (i.e. receiv
// ready to receive
ESP_ERROR_CHECK(rmt_receive(rx_channel, raw_symbols, sizeof(raw_symbols), &receive_config));
// wait for RX done signal
rmt_rx_done_event_data_t *rx_data = NULL;
xTaskNotifyWait(0x00, ULONG_MAX, (uint32_t *)&rx_data, portMAX_DELAY);
rmt_rx_done_event_data_t rx_data;
xQueueReceive(receive_queue, &rx_data, portMAX_DELAY);
// parse the receive symbols
example_parse_nec_frame(rx_data->received_symbols, rx_data->num_symbols);
example_parse_nec_frame(rx_data.received_symbols, rx_data.num_symbols);
RMT Encoder
^^^^^^^^^^^