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feat(dma2d): Add a rx empty event callback

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C.S.M
2025-03-12 11:46:12 +08:00
parent 60d077eadd
commit 3ae39a039c
3 changed files with 16 additions and 3 deletions
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16
components/esp_hw_support/dma/dma2d.c
View File

@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -298,8 +298,14 @@ static NOINLINE_ATTR bool _dma2d_default_rx_isr(dma2d_group_t *group, int channe
}
}
// If last transcation completes (regardless success or not), free the channels
if (intr_status & (DMA2D_LL_EVENT_RX_SUC_EOF | DMA2D_LL_EVENT_RX_ERR_EOF | DMA2D_LL_EVENT_RX_DESC_ERROR)) {
if (intr_status & DMA2D_LL_EVENT_RX_DESC_EMPTY) {
if (rx_chan->on_desc_empty) {
need_yield |= rx_chan->on_desc_empty(&rx_chan->base, &edata, user_data);
}
}
// If last transaction completes (regardless success or not), free the channels
if (intr_status & (DMA2D_LL_EVENT_RX_SUC_EOF | DMA2D_LL_EVENT_RX_ERR_EOF | DMA2D_LL_EVENT_RX_DESC_ERROR | DMA2D_LL_EVENT_RX_DESC_EMPTY)) {
if (!(intr_status & DMA2D_LL_EVENT_RX_ERR_EOF)) {
assert(dma2d_ll_rx_is_fsm_idle(group->hal.dev, channel_id));
}
@ -688,6 +694,10 @@ esp_err_t dma2d_register_rx_event_callbacks(dma2d_channel_handle_t dma2d_chan, d
rx_chan->on_desc_done = cbs->on_desc_done;
mask |= DMA2D_LL_EVENT_RX_DONE;
}
if (cbs->on_desc_empty) {
rx_chan->on_desc_empty = cbs->on_desc_empty;
mask |= DMA2D_LL_EVENT_RX_DESC_EMPTY;
}
rx_chan->user_data = user_data;
dma2d_ll_rx_enable_interrupt(group->hal.dev, rx_chan->base.channel_id, mask, true);

1
components/esp_hw_support/dma/dma2d_priv.h
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@ -86,6 +86,7 @@ struct dma2d_rx_channel_t {
void *user_data; // User registered DMA event data
dma2d_event_callback_t on_recv_eof; // RX EOF event callback
dma2d_event_callback_t on_desc_done; // RX DONE event callback
dma2d_event_callback_t on_desc_empty; // RX desc empty callback, trigger when buffer on dma is not sufficient.
uint32_t bundled_tx_channel_mask; // Bit mask indicating the TX channels together with the RX channel to do the transaction
};

2
components/esp_hw_support/dma/include/esp_private/dma2d.h
View File

@ -344,6 +344,8 @@ typedef struct {
to be still in the middle of a complete transaction (partially done),
you are allowed to configure 2D-DMA channel hardware/descriptor in this
callback, and let the channels start running again */
dma2d_event_callback_t on_desc_empty; /*!< Invoked when the buffer size pointed to by the received linked list
descriptor is less than the length of the data to be received */
} dma2d_rx_event_callbacks_t;
/**