diff options
Diffstat (limited to 'os')
| -rw-r--r-- | os/hal/platforms/STM32/uart_lld.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/os/hal/platforms/STM32/uart_lld.c b/os/hal/platforms/STM32/uart_lld.c index 02fc46bb7..88dd7d8a3 100644 --- a/os/hal/platforms/STM32/uart_lld.c +++ b/os/hal/platforms/STM32/uart_lld.c @@ -364,6 +364,7 @@ void uart_lld_init(void) { RCC->APB2RSTR = 0;
uartObjectInit(&UARTD1);
UARTD1.ud_usart = USART1;
+ UARTD1.ud_dmap = STM32_DMA1;
UARTD1.ud_dmarx = STM32_DMA_CHANNEL_4;
UARTD1.ud_dmatx = STM32_DMA_CHANNEL_5;
UARTD1.ud_dmaccr = 0;
@@ -374,6 +375,7 @@ void uart_lld_init(void) { RCC->APB1RSTR = 0;
uartObjectInit(&UARTD2);
UARTD2.ud_usart = USART2;
+ UARTD2.ud_dmap = STM32_DMA1;
UARTD2.ud_dmarx = STM32_DMA_CHANNEL_6;
UARTD2.ud_dmatx = STM32_DMA_CHANNEL_7;
UARTD2.ud_dmaccr = 0;
@@ -416,7 +418,7 @@ void uart_lld_start(UARTDriver *uartp) { /* Static DMA setup, the transfer size depends on the USART settings,
it is 16 bits if M=1 and PCE=0 else it is 8 bits.*/
- uartp->ud_dmaccr = STM32_UART_USART1_DMA_PRIORITY << 12;
+ uartp->ud_dmaccr = STM32_UART_USART1_DMA_PRIORITY << 12;
if ((uartp->ud_config->uc_cr1 & (USART_CR1_M | USART_CR1_PCE)) == USART_CR1_M)
uartp->ud_dmaccr |= DMA_CCR1_MSIZE_0 | DMA_CCR1_PSIZE_0;
uartp->ud_dmap->channels[uartp->ud_dmarx].CPAR = (uint32_t)&uartp->ud_usart->DR;
@@ -475,7 +477,8 @@ void uart_lld_start_send(UARTDriver *uartp, size_t n, const void *txbuf) { /* TX DMA channel preparation and start.*/
dmaSetupChannel(uartp->ud_dmap, uartp->ud_dmatx, n, txbuf,
- uartp->ud_dmaccr | DMA_CCR1_TEIE | DMA_CCR1_TCIE);
+ uartp->ud_dmaccr | DMA_CCR1_DIR |
+ DMA_CCR1_TEIE | DMA_CCR1_TCIE);
dmaEnableChannel(uartp->ud_dmap, uartp->ud_dmatx);
}
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