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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2012-01-15 09:37:27 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2012-01-15 09:37:27 +0000 |
| commit | e2448aac991fff9bc29d892de9d78c6d1714e81c (patch) | |
| tree | c94f67e6557e95a5eee47684ada870e89b0c05cb /os/hal/platforms/STM32F4xx/stm32_dma.h | |
| parent | 17f9264b099705e80822be875a0dbc0658ad05fd (diff) | |
| download | ChibiOS-e2448aac991fff9bc29d892de9d78c6d1714e81c.tar.gz ChibiOS-e2448aac991fff9bc29d892de9d78c6d1714e81c.tar.bz2 ChibiOS-e2448aac991fff9bc29d892de9d78c6d1714e81c.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3811 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/platforms/STM32F4xx/stm32_dma.h')
| -rw-r--r-- | os/hal/platforms/STM32F4xx/stm32_dma.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32F4xx/stm32_dma.h b/os/hal/platforms/STM32F4xx/stm32_dma.h index bcadf153c..5c0430e7d 100644 --- a/os/hal/platforms/STM32F4xx/stm32_dma.h +++ b/os/hal/platforms/STM32F4xx/stm32_dma.h @@ -352,6 +352,8 @@ typedef void (*stm32_dmaisr_t)(void *p, uint32_t flags); /**
* @brief DMA stream disable.
+ * @details The function disables the specified stream, waits for the disable
+ * operation to complete and then clears any pending interrupt.
* @note This function can be invoked in both ISR or thread context.
* @pre The stream must have been allocated using @p dmaStreamAllocate().
* @post After use the stream can be released using @p dmaStreamRelease().
@@ -362,6 +364,9 @@ typedef void (*stm32_dmaisr_t)(void *p, uint32_t flags); */
#define dmaStreamDisable(dmastp) { \
(dmastp)->stream->CR &= ~STM32_DMA_CR_EN; \
+ while (((dmastp)->stream->CR & STM32_DMA_CR_EN) != 0) \
+ ; \
+ dmaStreamClearInterrupt(dmastp); \
}
/**
|