diff options
Diffstat (limited to 'os/hal/ports/STM32/LLD/SPIv2/spi_lld.c')
| -rw-r--r-- | os/hal/ports/STM32/LLD/SPIv2/spi_lld.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/LLD/SPIv2/spi_lld.c b/os/hal/ports/STM32/LLD/SPIv2/spi_lld.c index cc4635122..8a218ac46 100644 --- a/os/hal/ports/STM32/LLD/SPIv2/spi_lld.c +++ b/os/hal/ports/STM32/LLD/SPIv2/spi_lld.c @@ -417,6 +417,7 @@ void spi_lld_start(SPIDriver *spip) { STM32_DMA_CR_PSIZE_BYTE | STM32_DMA_CR_MSIZE_BYTE;
spip->txdmamode = (spip->txdmamode & ~STM32_DMA_CR_SIZE_MASK) |
STM32_DMA_CR_PSIZE_BYTE | STM32_DMA_CR_MSIZE_BYTE;
+ spip->fsize = sizeof (uint8_t);
}
else {
/* Frame width is larger than 8 bits.*/
@@ -424,6 +425,7 @@ void spi_lld_start(SPIDriver *spip) { STM32_DMA_CR_PSIZE_HWORD | STM32_DMA_CR_MSIZE_HWORD;
spip->txdmamode = (spip->txdmamode & ~STM32_DMA_CR_SIZE_MASK) |
STM32_DMA_CR_PSIZE_HWORD | STM32_DMA_CR_MSIZE_HWORD;
+ spip->fsize = sizeof (uint16_t);
}
/* SPI setup and enable.*/
spip->spi->CR1 = 0;
@@ -547,6 +549,9 @@ void spi_lld_ignore(SPIDriver *spip, size_t n) { void spi_lld_exchange(SPIDriver *spip, size_t n,
const void *txbuf, void *rxbuf) {
+ /* DMA buffer invalidation because data cache.*/
+ dmaBufferInvalidate(rxbuf, (uint8_t *)rxbuf + (n * spip->fsize));
+
dmaStreamSetMemory0(spip->dmarx, rxbuf);
dmaStreamSetTransactionSize(spip->dmarx, n);
dmaStreamSetMode(spip->dmarx, spip->rxdmamode| STM32_DMA_CR_MINC);
@@ -601,6 +606,9 @@ void spi_lld_send(SPIDriver *spip, size_t n, const void *txbuf) { */
void spi_lld_receive(SPIDriver *spip, size_t n, void *rxbuf) {
+ /* DMA buffer invalidation because data cache.*/
+ dmaBufferInvalidate(rxbuf, (uint8_t *)rxbuf + (n * spip->fsize));
+
dmaStreamSetMemory0(spip->dmarx, rxbuf);
dmaStreamSetTransactionSize(spip->dmarx, n);
dmaStreamSetMode(spip->dmarx, spip->rxdmamode | STM32_DMA_CR_MINC);
|