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fix(rmt): fix race condition and add receive config error message

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Closes https://github.com/espressif/esp-idf/issues/15842
Closes https://github.com/espressif/esp-idf/issues/15836
This commit is contained in:
Chen Jichang
2025-04-24 15:04:06 +08:00
committed by morris
parent 45dc5a050c
commit 644299e825
1 changed files with 3 additions and 3 deletions
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6
components/driver/rmt/rmt_rx.c
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@ -374,8 +374,8 @@ esp_err_t rmt_receive(rmt_channel_handle_t channel, void *buffer, size_t buffer_
uint32_t filter_reg_value = ((uint64_t)rx_chan->filter_clock_resolution_hz * config->signal_range_min_ns) / 1000000000UL;
uint32_t idle_reg_value = ((uint64_t)channel->resolution_hz * config->signal_range_max_ns) / 1000000000UL;
ESP_RETURN_ON_FALSE_ISR(filter_reg_value <= RMT_LL_MAX_FILTER_VALUE, ESP_ERR_INVALID_ARG, TAG, "signal_range_min_ns too big");
ESP_RETURN_ON_FALSE_ISR(idle_reg_value <= RMT_LL_MAX_IDLE_VALUE, ESP_ERR_INVALID_ARG, TAG, "signal_range_max_ns too big");
ESP_RETURN_ON_FALSE_ISR(filter_reg_value <= RMT_LL_MAX_FILTER_VALUE, ESP_ERR_INVALID_ARG, TAG, "signal_range_min_ns too big, should be less than %"PRIu32" ns", (uint32_t)((uint64_t)RMT_LL_MAX_FILTER_VALUE * 1000000000UL / rx_chan->filter_clock_resolution_hz));
ESP_RETURN_ON_FALSE_ISR(idle_reg_value <= RMT_LL_MAX_IDLE_VALUE, ESP_ERR_INVALID_ARG, TAG, "signal_range_max_ns too big, should be less than %"PRIu32" ns", (uint32_t)((uint64_t)RMT_LL_MAX_IDLE_VALUE * 1000000000UL / channel->resolution_hz));
// check if we're in a proper state to start the receiver
rmt_fsm_t expected_fsm = RMT_FSM_ENABLE;
@ -408,11 +408,11 @@ esp_err_t rmt_receive(rmt_channel_handle_t channel, void *buffer, size_t buffer_
rmt_ll_rx_set_idle_thres(hal->regs, channel_id, idle_reg_value);
// turn on RMT RX machine
rmt_ll_rx_enable(hal->regs, channel_id, true);
portEXIT_CRITICAL_SAFE(&channel->spinlock);
// saying we're in running state, this state will last until the receiving is done
// i.e., we will switch back to the enable state in the receive done interrupt handler
atomic_store(&channel->fsm, RMT_FSM_RUN);
portEXIT_CRITICAL_SAFE(&channel->spinlock);
return ESP_OK;
}