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Added WDRBT flag in MR register as default to avoid overrun using dma. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@11520 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
isiora 2018-02-20 18:22:05 +00:00
parent a6d67787e4
commit 4be6636fd0
1 changed files with 779 additions and 775 deletions
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10
os/hal/ports/SAMA/LLD/SPIv1/hal_spi_lld.c
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@ -327,7 +327,7 @@ void spi_lld_init(void) {
FSPID2.dmarx = NULL;
FSPID2.dmatx = NULL;
FSPID2.rxdmamode = XDMAC_CC_TYPE_PER_TRAN |
XDMAC_CC_MBSIZE_SINGLE |
XDMAC_CC_MBSIZE_SIXTEEN |
XDMAC_CC_DSYNC_PER2MEM |
XDMAC_CC_PROT_SEC |
XDMAC_CC_CSIZE_CHK_1 |
@ -338,7 +338,7 @@ void spi_lld_init(void) {
XDMAC_CC_DAM_INCREMENTED_AM |
XDMAC_CC_PERID(PERID_FLEXCOM2_RX);
FSPID2.txdmamode = XDMAC_CC_TYPE_PER_TRAN |
XDMAC_CC_MBSIZE_SINGLE |
XDMAC_CC_MBSIZE_SIXTEEN |
XDMAC_CC_DSYNC_MEM2PER |
XDMAC_CC_PROT_SEC |
XDMAC_CC_CSIZE_CHK_1 |
@ -561,7 +561,7 @@ void spi_lld_start(SPIDriver *spip) {
spip->spi->SPI_CR = SPI_CR_SWRST;
/* SPI configuration */
spip->spi->SPI_MR = SPI_MR_MSTR | spip->config->mr;
spip->spi->SPI_MR = SPI_MR_MSTR | SPI_MR_WDRBT | spip->config->mr;
spip->spi->SPI_MR &= ~SPI_MR_PCS_Msk;
spip->spi->SPI_MR |= SPI_PCS(spip->config->npcs);
spip->spi->SPI_CSR[spip->config->npcs] = spip->config->csr;
@ -598,6 +598,9 @@ void spi_lld_stop(SPIDriver *spip) {
/* Enable write protection */
spiEnableWP(spip->spi);
dmaChannelRelease(spip->dmarx);
dmaChannelRelease(spip->dmatx);
#if SAMA_SPI_USE_SPI0
if (&SPID0 == spip)
/* Disable SPI0 clock */
@ -773,3 +776,4 @@ void spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf) {
#endif /* HAL_USE_SPI */
/** @} */