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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-08-10 22:01:12 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-08-10 22:01:12 +0000 |
| commit | b1e0f7b0dc5b0a350eb1e198ac6c4a579318cba9 (patch) | |
| tree | 73f84f801733d66d034be2809003d653ff593509 /nuttx/arch/arm/src/stm32/stm32_serial.c | |
| parent | 3f0870e66e9b44b1be143f8c047ffbfee378827f (diff) | |
| download | px4-nuttx-b1e0f7b0dc5b0a350eb1e198ac6c4a579318cba9.tar.gz px4-nuttx-b1e0f7b0dc5b0a350eb1e198ac6c4a579318cba9.tar.bz2 px4-nuttx-b1e0f7b0dc5b0a350eb1e198ac6c4a579318cba9.zip | |
STM32 SDIO DMA setup was losing DMA priority
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5019 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/arm/src/stm32/stm32_serial.c')
| -rw-r--r-- | nuttx/arch/arm/src/stm32/stm32_serial.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32_serial.c b/nuttx/arch/arm/src/stm32/stm32_serial.c index 01c519b39..265abfbf3 100644 --- a/nuttx/arch/arm/src/stm32/stm32_serial.c +++ b/nuttx/arch/arm/src/stm32/stm32_serial.c @@ -132,6 +132,30 @@ */ # define RXDMA_BUFFER_SIZE 32 + +/* DMA priority */ + +# ifndef CONFIG_USART_DMAPRIO +# if defined(CONFIG_STM32_STM32F10XX) +# define CONFIG_USART_DMAPRIO DMA_CCR_PRIMED +# elif defined(CONFIG_STM32_STM32F20XX) || defined(CONFIG_STM32_STM32F40XX) +# define CONFIG_USART_DMAPRIO DMA_SCR_PRIMED +# else +# error "Unknown STM32 DMA" +# endif +# endif +# if defined(CONFIG_STM32_STM32F10XX) +# if (CONFIG_USART_DMAPRIO & ~DMA_CCR_PL_MASK) != 0 +# error "Illegal value for CONFIG_USART_DMAPRIO" +# endif +# elif defined(CONFIG_STM32_STM32F20XX) || defined(CONFIG_STM32_STM32F40XX) +# if (CONFIG_USART_DMAPRIO & ~DMA_SCR_PL_MASK) != 0 +# error "Illegal value for CONFIG_USART_DMAPRIO" +# endif +# else +# error "Unknown STM32 DMA" +# endif + #endif /* Power management definitions */ @@ -975,6 +999,7 @@ static int up_dma_setup(struct uart_dev_s *dev) DMA_SCR_MINC | DMA_SCR_PSIZE_8BITS | DMA_SCR_MSIZE_8BITS | + CONFIG_USART_DMAPRIO | DMA_SCR_PBURST_SINGLE | DMA_SCR_MBURST_SINGLE); |