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gdma_connect() function
Connect GDMA channel to trigger peripheral
Syntax
Return value
- ESP_OK: Connect GDMA channel successfully - ESP_ERR_INVALID_ARG: Connect GDMA channel failed because of invalid argument - ESP_ERR_INVALID_STATE: Connect GDMA channel failed because DMA channel is working with another peripheral - ESP_FAIL: Connect GDMA channel failed because of other error
Notes
Suggest to use helper macro `GDMA_MAKE_TRIGGER` to construct parameter `trig_periph`. e.g. GDMA_MAKE_TRIGGER(GDMA_TRIG_PERIPH_SHA,0) Connecting to a peripheral will also reset the DMA FIFO and FSM automatically
Related Functions
Found 18 other functions taking a ![]()
gdma_channel_t
argument:
Function
Description
Create AHB-GDMA channel
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
Get the group ID and the channel ID
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