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SDC. Added F4x-specyfic DMA transaction end code. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4123 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
barthess 2012-04-22 16:55:57 +00:00
parent df9fd22f53
commit bb2388a241
1 changed files with 17 additions and 4 deletions
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21
os/hal/platforms/STM32/sdc_lld.c
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@ -176,6 +176,22 @@ static bool_t sdc_lld_wait_transaction_end(SDCDriver *sdcp, uint32_t n,
return CH_FAILED;
}
#if (defined(STM32F4XX) || defined(STM32F2XX))
/* Wait until DMA channel enabled to be sure that all data transferred.*/
while (sdcp->dma->stream->CR & STM32_DMA_CR_EN)
;
/* DMA event flags must be manually cleared.*/
dmaStreamClearInterrupt(sdcp->dma);
SDIO->ICR = STM32_SDIO_ICR_ALL_FLAGS;
SDIO->DCTRL = 0;
chSysUnlock();
/* Wait until interrupt flags to be cleared.*/
/*while (((DMA2->LISR) >> (sdcp->dma->ishift)) & STM32_DMA_ISR_TCIF)
dmaStreamClearInterrupt(sdcp->dma);*/
#else
/* Waits for transfer completion at DMA level, the the stream is
disabled and cleared.*/
dmaWaitCompletion(sdcp->dma);
@ -183,10 +199,7 @@ static bool_t sdc_lld_wait_transaction_end(SDCDriver *sdcp, uint32_t n,
SDIO->ICR = STM32_SDIO_ICR_ALL_FLAGS;
SDIO->DCTRL = 0;
chSysUnlock();
/* Wait until interrupt flags to be cleared.*/
/* while (((DMA2->LISR) >> (sdcp->dma->ishift)) & STM32_DMA_ISR_TCIF)
dmaStreamClearInterrupt(sdcp->dma);*/
#endif
/* Finalize transaction.*/
if (n > 1)