rmt: Adds a simple handler that can be called when transmission ends.
Merges https://github.com/espressif/esp-idf/pull/1174
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@ -119,6 +119,8 @@ typedef struct {
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typedef intr_handle_t rmt_isr_handle_t;
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typedef intr_handle_t rmt_isr_handle_t;
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typedef void (*rmt_tx_end_t)(rmt_channel_t channel);
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/**
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/**
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* @brief Set RMT clock divider, channel clock is divided from source clock.
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* @brief Set RMT clock divider, channel clock is divided from source clock.
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*
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*
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@ -702,6 +704,20 @@ esp_err_t rmt_wait_tx_done(rmt_channel_t channel, TickType_t wait_time);
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*/
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*/
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esp_err_t rmt_get_ringbuf_handle(rmt_channel_t channel, RingbufHandle_t* buf_handle);
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esp_err_t rmt_get_ringbuf_handle(rmt_channel_t channel, RingbufHandle_t* buf_handle);
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/**
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* @brief Registers a callback that will be called when transmission ends.
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*
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* Called by rmt_driver_isr_default in interrupt context.
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*
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* @note Requires rmt_driver_install to install the default ISR handler.
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*
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* @param fn Function to be called from the default interrupt handler or NULL.
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*
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* @return the previous handler (or NULL if there was none)
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*/
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rmt_tx_end_t rmt_register_tx_end_callback(rmt_tx_end_t fn);
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/*
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/*
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* ----------------EXAMPLE OF RMT INTERRUPT ------------------
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* ----------------EXAMPLE OF RMT INTERRUPT ------------------
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* @code{c}
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* @code{c}
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@ -75,6 +75,9 @@ typedef struct {
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rmt_obj_t* p_rmt_obj[RMT_CHANNEL_MAX] = {0};
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rmt_obj_t* p_rmt_obj[RMT_CHANNEL_MAX] = {0};
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// Event called when transmission is ended
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static rmt_tx_end_t rmt_tx_end_callback = NULL;
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static void rmt_set_tx_wrap_en(rmt_channel_t channel, bool en)
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static void rmt_set_tx_wrap_en(rmt_channel_t channel, bool en)
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{
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{
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portENTER_CRITICAL(&rmt_spinlock);
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portENTER_CRITICAL(&rmt_spinlock);
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@ -548,6 +551,9 @@ static void IRAM_ATTR rmt_driver_isr_default(void* arg)
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p_rmt->tx_len_rem = 0;
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p_rmt->tx_len_rem = 0;
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p_rmt->tx_offset = 0;
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p_rmt->tx_offset = 0;
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p_rmt->tx_sub_len = 0;
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p_rmt->tx_sub_len = 0;
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if(rmt_tx_end_callback != NULL) {
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rmt_tx_end_callback(channel);
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}
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break;
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break;
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//RX_END
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//RX_END
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case 1:
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case 1:
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@ -771,3 +777,9 @@ esp_err_t rmt_get_ringbuf_handle(rmt_channel_t channel, RingbufHandle_t* buf_han
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return ESP_OK;
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return ESP_OK;
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}
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}
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rmt_tx_end_t rmt_register_tx_end_callback(rmt_tx_end_t handler)
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{
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rmt_tx_end_t previous = rmt_tx_end_callback;
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rmt_tx_end_callback = handler;
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return previous;
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}
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