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fix(rmt): treat loop once as no loop

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Chen Jichang
2025-08-07 13:09:00 +08:00
parent 4e03f8df0f
commit 6c3d275342
1 changed files with 3 additions and 2 deletions
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5
components/esp_driver_rmt/src/rmt_tx.c
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@@ -521,7 +521,7 @@ esp_err_t rmt_transmit(rmt_channel_handle_t channel, rmt_encoder_t *encoder, con
ESP_RETURN_ON_FALSE(channel && encoder && payload && payload_bytes && config, ESP_ERR_INVALID_ARG, TAG, "invalid argument"); ESP_RETURN_ON_FALSE(channel && encoder && payload && payload_bytes && config, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
ESP_RETURN_ON_FALSE(channel->direction == RMT_CHANNEL_DIRECTION_TX, ESP_ERR_INVALID_ARG, TAG, "invalid channel direction"); ESP_RETURN_ON_FALSE(channel->direction == RMT_CHANNEL_DIRECTION_TX, ESP_ERR_INVALID_ARG, TAG, "invalid channel direction");
#if !SOC_RMT_SUPPORT_TX_LOOP_COUNT #if !SOC_RMT_SUPPORT_TX_LOOP_COUNT
ESP_RETURN_ON_FALSE(config->loop_count <= 0, ESP_ERR_NOT_SUPPORTED, TAG, "loop count is not supported"); ESP_RETURN_ON_FALSE(config->loop_count <= 1, ESP_ERR_NOT_SUPPORTED, TAG, "loop count is not supported");
#endif // !SOC_RMT_SUPPORT_TX_LOOP_COUNT #endif // !SOC_RMT_SUPPORT_TX_LOOP_COUNT
#if CONFIG_RMT_TX_ISR_CACHE_SAFE #if CONFIG_RMT_TX_ISR_CACHE_SAFE
// payload is retrieved by the encoder, we should make sure it's still accessible even when the cache is disabled // payload is retrieved by the encoder, we should make sure it's still accessible even when the cache is disabled
@@ -546,7 +546,8 @@ esp_err_t rmt_transmit(rmt_channel_handle_t channel, rmt_encoder_t *encoder, con
t->encoder = encoder; t->encoder = encoder;
t->payload = payload; t->payload = payload;
t->payload_bytes = payload_bytes; t->payload_bytes = payload_bytes;
t->loop_count = config->loop_count; // treat loop_count == 1 as no loop
t->loop_count = config->loop_count == 1 ? 0 : config->loop_count;
t->remain_loop_count = t->loop_count; t->remain_loop_count = t->loop_count;
t->flags.eot_level = config->flags.eot_level; t->flags.eot_level = config->flags.eot_level;