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refactor(dac): improve the DAC driver

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This commit is contained in:
Hu Rui
2026-07-02 11:20:37 +08:00
parent 9583d6df06
commit 9c73af2261
23 changed files with 931 additions and 482 deletions
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components/esp_driver_dma/include/esp_private/gdma_link.h
+14 -1
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2023-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -117,6 +117,19 @@ esp_err_t gdma_link_mount_buffers(gdma_link_list_handle_t list, int start_item_i
*/
uintptr_t gdma_link_get_head_addr(gdma_link_list_handle_t list);
/**
* @brief Get the address of a specific link list item by index
* @note The returned address is the cached address used by the DMA hardware (same convention as `gdma_link_get_head_addr`).
* It can be passed directly to the DMA start function to resume transmission from a specific descriptor.
*
* @param[in] list Link list handle, allocated by `gdma_new_link_list`
* @param[in] item_index Index of the link list item (wraps around if out of range)
* @return
* - Address of the specified item
* - 0: Invalid handle
*/
uintptr_t gdma_link_get_item_addr(gdma_link_list_handle_t list, int item_index);
/**
* @brief Concatenate two link lists as follows:
*
components/esp_driver_dma/src/gdma_link.c
+10
View File
@@ -281,6 +281,16 @@ uintptr_t gdma_link_get_head_addr(gdma_link_list_handle_t list)
return (uintptr_t)(list->items);
}
uintptr_t gdma_link_get_item_addr(gdma_link_list_handle_t list, int item_index)
{
if (!list) {
return 0;
}
int num_items = list->num_items;
item_index = (item_index % num_items + num_items) % num_items;
return (uintptr_t)(list->items + item_index * list->item_size);
}
esp_err_t gdma_link_concat(gdma_link_list_handle_t first_link, int first_link_item_index, gdma_link_list_handle_t second_link, int second_link_item_index)
{
if (!first_link) {