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rmt: support tx loop count

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This commit is contained in:
morris
2020-03-18 18:13:27 +08:00
parent dc91aa9786
commit 0c17af3ea4
4 changed files with 61 additions and 4 deletions
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47
components/driver/rmt.c
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@@ -193,7 +193,17 @@ esp_err_t rmt_tx_start(rmt_channel_t channel, bool tx_idx_rst)
rmt_ll_reset_tx_pointer(p_rmt_obj[channel]->hal.regs, channel);
}
rmt_ll_clear_tx_end_interrupt(p_rmt_obj[channel]->hal.regs, channel);
rmt_ll_enable_tx_end_interrupt(p_rmt_obj[channel]->hal.regs, channel, true);
// enable tx end interrupt in non-loop mode
if (!rmt_ll_is_tx_loop_enabled(p_rmt_obj[channel]->hal.regs, channel)) {
rmt_ll_enable_tx_end_interrupt(p_rmt_obj[channel]->hal.regs, channel, true);
} else {
#if RMT_SUPPORT_TX_LOOP_COUNT
rmt_ll_reset_tx_loop(p_rmt_obj[channel]->hal.regs, channel);
rmt_ll_enable_tx_loop_count(p_rmt_obj[channel]->hal.regs, channel, true);
rmt_ll_clear_tx_loop_interrupt(p_rmt_obj[channel]->hal.regs, channel);
rmt_ll_enable_tx_loop_interrupt(p_rmt_obj[channel]->hal.regs, channel, true);
#endif
}
rmt_ll_start_tx(p_rmt_obj[channel]->hal.regs, channel);
RMT_EXIT_CRITICAL();
return ESP_OK;
@@ -497,6 +507,11 @@ static esp_err_t rmt_internal_config(rmt_dev_t *dev, const rmt_config_t *rmt_par
RMT_ENTER_CRITICAL();
rmt_ll_enable_tx_loop(dev, channel, rmt_param->tx_config.loop_en);
#if RMT_SUPPORT_TX_LOOP_COUNT
if (rmt_param->tx_config.loop_en) {
rmt_ll_set_tx_loop_count(dev, channel, rmt_param->tx_config.loop_count);
}
#endif
/* always enable tx ping-pong */
rmt_ll_enable_tx_pingpong(dev, true);
/*Set idle level */
@@ -770,6 +785,23 @@ static void IRAM_ATTR rmt_driver_isr_default(void *arg)
}
#endif
#if RMT_SUPPORT_TX_LOOP_COUNT
// loop count interrupt
status = rmt_ll_get_tx_loop_interrupt_status(hal->regs);
while (status) {
channel = __builtin_ffs(status) - 1;
status &= ~(1 << channel);
rmt_obj_t *p_rmt = p_rmt_obj[channel];
if (p_rmt) {
xSemaphoreGiveFromISR(p_rmt->tx_sem, &HPTaskAwoken);
if (rmt_tx_end_callback.function != NULL) {
rmt_tx_end_callback.function(channel, rmt_tx_end_callback.arg);
}
}
rmt_ll_clear_tx_loop_interrupt(hal->regs, channel);
}
#endif
// Err interrupt
status = rmt_ll_get_err_interrupt_status(hal->regs);
while (status) {
@@ -983,8 +1015,17 @@ esp_err_t rmt_write_items(rmt_channel_t channel, const rmt_item32_t *rmt_item, i
rmt_tx_start(channel, true);
p_rmt->wait_done = wait_tx_done;
if (wait_tx_done) {
xSemaphoreTake(p_rmt->tx_sem, portMAX_DELAY);
xSemaphoreGive(p_rmt->tx_sem);
// wait loop done
if (rmt_ll_is_tx_loop_enabled(p_rmt_obj[channel]->hal.regs, channel)) {
#if RMT_SUPPORT_TX_LOOP_COUNT
xSemaphoreTake(p_rmt->tx_sem, portMAX_DELAY);
xSemaphoreGive(p_rmt->tx_sem);
#endif
} else {
// wait tx end
xSemaphoreTake(p_rmt->tx_sem, portMAX_DELAY);
xSemaphoreGive(p_rmt->tx_sem);
}
}
return ESP_OK;
}