diff options
Diffstat (limited to 'os/io/platforms/STM32/spi_lld.c')
| -rw-r--r-- | os/io/platforms/STM32/spi_lld.c | 53 |
1 files changed, 47 insertions, 6 deletions
diff --git a/os/io/platforms/STM32/spi_lld.c b/os/io/platforms/STM32/spi_lld.c index a143bb463..6c203358f 100644 --- a/os/io/platforms/STM32/spi_lld.c +++ b/os/io/platforms/STM32/spi_lld.c @@ -40,6 +40,36 @@ SPIDriver SPID1; SPIDriver SPID2;
#endif
+/*===========================================================================*/
+/* Low Level Driver local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Low Level Driver interrupt handlers. */
+/*===========================================================================*/
+
+#if USE_STM32_SPI1 || defined(__DOXYGEN__)
+CH_IRQ_HANDLER(Vector70) {
+
+ CH_IRQ_PROLOGUE();
+
+ CH_IRQ_EPILOGUE();
+}
+#endif
+
+#if USE_STM32_SPI2 || defined(__DOXYGEN__)
+CH_IRQ_HANDLER(Vector78) {
+
+ CH_IRQ_PROLOGUE();
+
+ CH_IRQ_EPILOGUE();
+}
+#endif
+
+/*===========================================================================*/
+/* Low Level Driver exported functions. */
+/*===========================================================================*/
+
/**
* @brief Low level SPI driver initialization. */
@@ -47,18 +77,20 @@ void spi_lld_init(void) { #if USE_STM32_SPI1
spiObjectInit(&SPID1);
- SPID1.spd_spi = SPI1;
- SPID1.spd_dmarx = DMA1_Channel2;
- SPID1.spd_dmatx = DMA1_Channel3;
+ SPID1.spd_spi = SPI1;
+ SPID1.spd_dmarx = DMA1_Channel2;
+ SPID1.spd_dmatx = DMA1_Channel3;
+ SPID1.spd_dmaprio = SPI1_DMA_PRIORITY << 12;
RCC->APB2ENR |= RCC_APB2ENR_SPI1EN;
GPIOA->CRH = (GPIOA->CRH & 0x000FFFFF) | 0xB4B00000;
#endif
#if USE_STM32_SPI2
spiObjectInit(&SPID2);
- SPID2.spd_spi = SPI2;
- SPID2.spd_dmarx = DMA1_Channel4;
- SPID2.spd_dmatx = DMA1_Channel5;
+ SPID2.spd_spi = SPI2;
+ SPID2.spd_dmarx = DMA1_Channel4;
+ SPID2.spd_dmatx = DMA1_Channel5;
+ SPID2.spd_dmaprio = SPI2_DMA_PRIORITY << 12;
RCC->APB1ENR |= RCC_APB1ENR_SPI2EN;
GPIOB->CRL = (GPIOB->CRL & 0x000FFFFF) | 0xB4B00000;
#endif
@@ -114,6 +146,15 @@ void spi_lld_unselect(SPIDriver *spip) { */
void spi_lld_exchange(SPIDriver *spip, size_t n, void *rxbuf, void *txbuf) {
+ /*
+ * DMA setup. + */
+ spip->spd_dmarx->CNDTR = (uint32_t)n;
+ spip->spd_dmarx->CPAR = (uint32_t)&spip->spd_spi->DR;
+ spip->spd_dmarx->CMAR = (uint32_t)rxbuf;
+ spip->spd_dmarx->CCR = spip->spd_dmaprio |
+ DMA_CCR1_MSIZE_0 | DMA_CCR1_MSIZE_0 |
+ DMA_CCR1_MINC | DMA_CCR1_TEIE | DMA_CCR1_TCIE;
}
/** @} */
|