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gdma_get_group_channel_id() function
Get the group ID and the channel ID
Syntax
esp_err_t gdma_get_group_channel_id(gdma_channel_handle_t dma_chan,
int *group_id,
int *channel_id);
Return value
- ESP_OK: Get GDMA channel/group ID successfully - ESP_ERR_INVALID_ARG: Get GDMA channel/group ID failed because of invalid argument - ESP_FAIL: Get GDMA channel ID failed because of other error
Notes
This API breaks the encapsulation of GDMA Channel Object. With the returned group/channel ID, you can even bypass all other GDMA driver API and access Low Level API directly.
Related Functions
Found 18 other functions taking a ![]()
gdma_channel_t
argument:
Function
Description
Create AHB-GDMA channel
Connect GDMA channel to trigger peripheral
Apply channel strategy for GDMA channel
Set DMA descriptor address and start engine
Set GDMA event callbacks for TX channel
Set GDMA event callbacks for RX channel
Create AXI-GDMA channel
Disconnect GMA channel from peripheral
Configure transfer parameters for a DMA channel
Get the alignment constraints for internal and external memory
Set GDMA channel priority
Delete GDMA channel
Stop DMA engine
Make the appended descriptors be aware to the DMA engine
Reset DMA channel FIFO and internal finite state machine
Get the mask of free M2M trigger IDs
Deprecated APIs (will be removed in esp-idf 6.0) @cond Create GDMA channel (Legacy API)
Set DMA channel transfer ability