Posted on August 21, 2015 at 15:42
Hello all,
When using the STM32CUBEF1 V1.2.0 HAL-library with SPI and DMA transfer just for receiving data, I came across unusual behaviour.
An investigation showed, that the functionHAL_SPI_Receive_DMA() sets the callback functions of the transmit DMA handle to 0. When not using a DMA for TX at all, the handle hdma is already 0, leading to dereferencing a nullpointer and causing a hard fault.
/* Reset content of SPI TxDMA descriptor */
hspi->hdmatx->XferHalfCpltCallback = 0;
hspi->hdmatx->XferCpltCallback = 0;
hspi->hdmatx->XferErrorCallback = 0;
The same applies to the functionHAL_SPI_Transmit_DMA().
/* Reset content of SPI RxDMA descriptor */
hspi->hdmarx->XferHalfCpltCallback = 0;
hspi->hdmarx->XferCpltCallback = 0;
hspi->hdmarx->XferErrorCallback = 0;
The file in question is\STM32Cube_FW_F1_V1.2.0\Drivers\STM32F1xx_HAL_Driver\Src\stm32f1xx_hal_spi.c
Maybe this issue could be resolved for the next release of the software.
Regards,
Alex
#stm32cubef1 #spi #bug #cubef1
