Skip to content

fix stm32f4 DMA access not working #3916

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

Open
mtc-creations wants to merge 1 commit into
base: master
Choose a base branch
from
Open

fix stm32f4 DMA access not working #3916

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 6 additions & 0 deletions Processors/TFT_eSPI_STM32.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -623,6 +623,12 @@ bool TFT_eSPI::initDMA(bool ctrl_cs)

__HAL_LINKDMA(&spiHal, hdmatx, dmaHal); // Attach DMA engine to SPI peripheral

// The SPI peripheral is already configured and enabled by Arduino's SPI.begin(),
// but spiHal is a separate HAL handle with only Instance set. HAL_SPI_Transmit_DMA
// requires State == HAL_SPI_STATE_READY, so we must set it here. After each
// completed DMA transfer, the HAL callback resets State back to READY automatically.
spiHal.State = HAL_SPI_STATE_READY;

return DMA_Enabled = true;
}

Expand Down
Loading