Posted on October 06, 2017 at 11:30Hello,
I'm trying to port a code from stm32l4 to stm32f4
it seems that DMA initialization is a bit different between those two chips:
stm32l4 requires' DMA_REQUEST_XX' :
hdma_tim.Init.Request = DMA_REQUEST_4;
hdma_tim.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_tim.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_tim.Init.MemInc = DMA_MINC_ENABLE;
hdma_tim.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_tim.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_tim.Init.Mode = DMA_CIRCULAR;
hdma_tim.Init.Priority = DMA_PRIORITY_HIGH;
hdma_tim.Instance = DMA1_Channel5;
while stm32f4 :
hdma_tim.Init.Channel = DMA_CHANNEL_5;
hdma_tim.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_tim.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_tim.Init.MemInc = DMA_MINC_ENABLE;
hdma_tim.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_tim.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_tim.Init.Mode = DMA_CIRCULAR;
hdma_tim.Init.Priority = DMA_PRIORITY_HIGH;
hdma_tim.Instance =
DMA1_Channel5;
have that 'channel' parameter instead of 'request'
Does it work the same ? My dma can also start well ?
thank you
