Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

xtensa/esp32: Adds support for SERIAL_TXDMA. #4003

Merged
merged 1 commit into from
Jul 1, 2021
Merged

xtensa/esp32: Adds support for SERIAL_TXDMA. #4003

merged 1 commit into from
Jul 1, 2021

Conversation

saramonteiro
Copy link
Contributor

Summary

This MR adds support for serial driver operating with TX DMA transfers.

Impact

Serial users of ESP32 who enable TX DMA

Testing

After enabling TX DMA, I used printf shell command to write on /dev/ttySx using DMA.

Notes:

  • UART 2 is not working (with and without DMA) - This was already reported.
  • Support for RX DMA is not, and will not, be added because of HW bug on ESP32 UHCI.

@xiaoxiang781216 xiaoxiang781216 merged commit b45ccad into apache:master Jul 1, 2021
@saramonteiro saramonteiro deleted the esp32-uart-dma branch July 1, 2021 14:46
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Reviewers

@xiaoxiang781216 xiaoxiang781216 xiaoxiang781216 approved these changes

Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

Successfully merging this pull request may close these issues.
2 participants
@saramonteiro @xiaoxiang781216