SPI DMA + Futures #66
Draft
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This adds support for one-shot DMA transfers for all supported transfer types with linear addressing. It does not yet support linked list buffer loading, or support 2D addressing. Memory-to-memory transfers were quite thoroughly tested by the provided example, memory-to-peripheral and peripheral-to-memory transfers were tested with the SPI peripheral (working on a test branch). Peripheral-to-peripheral transfers are assumed to work given their similarity to memory-to-peripheral/peripheral-to-memory transfers, but will be properly tested at a later stage. The driver includes helper structs for peripheral transfers in the gpdma::periph module which handle the common operations for setting up one-directional and full-duplex transfers using one, or two channels, respectively.
- Use stack allocated buffers for dma example, - fix wait_for_transfer_complete/wait_for_half_transfer_complete - remove clock sync delays
- Add defmt derives - improve consistency in return values for DataTransformBuilder - Removed side effects from check_transfer_event and added a separate function to clear events - Add drop implementation to abort a transfer - Modified wait_for_transfer_complete and wait_for_half_transform_complete to: - explicitly clear event flags - consume, but forget self, so the drop implementation is not called. - misc documentation improvements
Merged
Co-authored-by: Albin Hedman <[email protected]>
# Conflicts: # src/gpdma/ch.rs
…instead; add async SPI behavior
…ransfer completes This is intended to support async SPI DMA usage without SPI interrupts enabled.
astapleton
force-pushed
the
as/gpdma-async
branch
from
564a91b to
36701a2
Compare
astapleton
force-pushed
the
as/spi-dma-2
branch
from
ff7a315 to
c88387f
Compare
astapleton
force-pushed
the
as/gpdma-async
branch
6 times, most recently
from
fe59cf0 to
48acbcd
Compare
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.