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refactor(gdma): move buffer aligment to buffer mount config

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This commit is contained in:
Chen Jichang
2025-10-15 15:40:39 +08:00
parent d5ce0e4757
commit 679c197185
11 changed files with 58 additions and 38 deletions
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components/esp_driver_rmt/src/rmt_rx.c
+2 -2
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@@ -39,7 +39,7 @@ static void rmt_rx_default_isr(void *args);
#if SOC_RMT_SUPPORT_DMA
static bool rmt_dma_rx_one_block_cb(gdma_channel_handle_t dma_chan, gdma_event_data_t *event_data, void *user_data);
static void rmt_rx_mount_dma_buffer(rmt_rx_channel_t *rx_chan, const void *buffer, size_t buffer_size, size_t per_block_size, size_t last_block_size)
static void rmt_rx_mount_dma_buffer(rmt_rx_channel_t *rx_chan, const void *buffer, size_t buffer_size, size_t mem_alignment, size_t per_block_size, size_t last_block_size)
{
uint8_t *data = (uint8_t *)buffer;
for (int i = 0; i < rx_chan->num_dma_nodes; i++) {
@@ -436,7 +436,7 @@ esp_err_t rmt_receive(rmt_channel_handle_t channel, void *buffer, size_t buffer_
size_t per_dma_block_size = buffer_size / rx_chan->num_dma_nodes;
per_dma_block_size = ALIGN_DOWN(per_dma_block_size, mem_alignment);
size_t last_dma_block_size = buffer_size - per_dma_block_size * (rx_chan->num_dma_nodes - 1);
rmt_rx_mount_dma_buffer(rx_chan, buffer, buffer_size, per_dma_block_size, last_dma_block_size);
rmt_rx_mount_dma_buffer(rx_chan, buffer, buffer_size, mem_alignment, per_dma_block_size, last_dma_block_size);
gdma_reset(channel->dma_chan);
gdma_start(channel->dma_chan, (intptr_t)rx_chan->dma_nodes); // note, we must use the cached descriptor address to start the DMA
}