CubeMX DMA SPI Transmit and RX

Posted on March 25, 2015 at 20:45

Hello,

I'm using an STM32F415 and CubeMx.  I've got the HAL_SPI_TxRxCpltCallback() working in that it gets called after the proper number of bytes have been clocked out of the SPI Slave, however, when I prep for another transfer using HAL_SPI_TransmitReceive_DMA inside that first callback, it breaks.

I've traced the issue down to the SPI2 TX DMA stream being ''locked'' in the HAL.

I think I have a workaround where I call both HAL_DMA IRQ handlers for DMA1_Stream3_IRQHandler() and DMA1_Stream4_IRQHandler().  Eg:   HAL_DMA_IRQHandler(&hdma_spi2_tx);

  HAL_DMA_IRQHandler(&hdma_spi2_rx);

Is this the suggested implementation?

#cubemx #dma #spi #irq