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fix(rmt): fixed unstable transfer during DFS

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Closes https://github.com/espressif/esp-idf/issues/12292
This commit is contained in:
morris
2023-09-26 13:33:25 +08:00
parent 17ae394fd1
commit 985b8ca948
4 changed files with 69 additions and 78 deletions
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4
components/driver/rmt/rmt_tx.c
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@@ -250,8 +250,6 @@ esp_err_t rmt_new_tx_channel(const rmt_tx_channel_config_t *config, rmt_channel_
rmt_hal_context_t *hal = &group->hal;
int channel_id = tx_channel->base.channel_id;
int group_id = group->group_id;
// select the clock source
ESP_GOTO_ON_ERROR(rmt_select_periph_clock(&tx_channel->base, config->clk_src), err, TAG, "set group clock failed");
// reset channel, make sure the TX engine is not working, and events are cleared
portENTER_CRITICAL(&group->spinlock);
@@ -277,6 +275,8 @@ esp_err_t rmt_new_tx_channel(const rmt_tx_channel_config_t *config, rmt_channel_
ESP_GOTO_ON_ERROR(rmt_tx_init_dma_link(tx_channel, config), err, TAG, "install tx DMA failed");
}
#endif
// select the clock source
ESP_GOTO_ON_ERROR(rmt_select_periph_clock(&tx_channel->base, config->clk_src), err, TAG, "set group clock failed");
// set channel clock resolution
uint32_t real_div = group->resolution_hz / config->resolution_hz;
rmt_ll_tx_set_channel_clock_div(hal->regs, channel_id, real_div);