diff options
Diffstat (limited to 'nuttx/arch/arm/src/stm32/stm32_spi.c')
| -rw-r--r-- | nuttx/arch/arm/src/stm32/stm32_spi.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32_spi.c b/nuttx/arch/arm/src/stm32/stm32_spi.c index 7fdd988cb..06a994524 100644 --- a/nuttx/arch/arm/src/stm32/stm32_spi.c +++ b/nuttx/arch/arm/src/stm32/stm32_spi.c @@ -88,18 +88,47 @@ * Definitions ************************************************************************************/ /* Configuration ********************************************************************/ +/* SPI interrupts */ #ifdef CONFIG_STM32_SPI_INTERRUPTS # error "Interrupt driven SPI not yet supported" #endif +/* Can't have both interrupt driven SPI and SPI DMA */ + #if defined(CONFIG_STM32_SPI_INTERRUPTS) && defined(CONFIG_STM32_SPI_DMA) # error "Cannot enable both interrupt mode and DMA mode for SPI" #endif -/* DMA channel configuration */ +/* SPI DMA priority */ + +#ifdef CONFIG_STM32_SPI_DMA + +# if defined(CONFIG_SPI_DMAPRIO) +# define SPI_DMA_PRIO CONFIG_SPI_DMAPRIO +# elif defined(CONFIG_STM32_STM32F10XX) +# define SPI_DMA_PRIO DMA_CCR_PRIMED +# elif defined(CONFIG_STM32_STM32F20XX) || defined(CONFIG_STM32_STM32F40XX) +# define SPI_DMA_PRIO DMA_SCR_PRIMED +# else +# error "Unknown STM32 DMA" +# endif -#define SPI_DMA_PRIO DMA_CCR_PRIMED /* Check this to alter priority */ +# if defined(CONFIG_STM32_STM32F10XX) +# if (SPI_DMA_PRIO & ~DMA_CCR_PL_MASK) != 0 +# error "Illegal value for CONFIG_SPI_DMAPRIO" +# endif +# elif defined(CONFIG_STM32_STM32F20XX) || defined(CONFIG_STM32_STM32F40XX) +# if (SPI_DMA_PRIO & ~DMA_SCR_PL_MASK) != 0 +# error "Illegal value for CONFIG_SPI_DMAPRIO" +# endif +# else +# error "Unknown STM32 DMA" +# endif + +#endif + +/* DMA channel configuration */ #define SPI_RXDMA16_CONFIG (SPI_DMA_PRIO|DMA_CCR_MSIZE_16BITS|DMA_CCR_PSIZE_16BITS|DMA_CCR_MINC ) #define SPI_RXDMA8_CONFIG (SPI_DMA_PRIO|DMA_CCR_MSIZE_8BITS |DMA_CCR_PSIZE_8BITS |DMA_CCR_MINC ) |