/**
* @brief Low level serial driver configuration and (re)start.
*
* @param[in] sdp pointer to a @p SerialDriver object
* @param[in] config the architecture-dependent serial driver configuration.
* If this parameter is set to @p NULL then a default
* configuration is used.
*
* @notapi
*/
void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) {
if (config == NULL)
config = &default_config;
if (sdp->state == SD_STOP) {
#if STM32_SERIAL_USE_USART1
if (&SD1 == sdp) {
rccEnableUSART1(FALSE);
nvicEnableVector(STM32_USART1_NUMBER, STM32_SERIAL_USART1_PRIORITY);
}
#endif
#if STM32_SERIAL_USE_USART2
if (&SD2 == sdp) {
rccEnableUSART2(FALSE);
nvicEnableVector(STM32_USART2_NUMBER, STM32_SERIAL_USART2_PRIORITY);
}
#endif
#if STM32_SERIAL_USE_USART3
if (&SD3 == sdp) {
rccEnableUSART3(FALSE);
nvicEnableVector(STM32_USART3_NUMBER, STM32_SERIAL_USART3_PRIORITY);
}
#endif
#if STM32_SERIAL_USE_UART4
if (&SD4 == sdp) {
rccEnableUART4(FALSE);
nvicEnableVector(STM32_UART4_NUMBER, STM32_SERIAL_UART4_PRIORITY);
}
#endif
#if STM32_SERIAL_USE_UART5
if (&SD5 == sdp) {
rccEnableUART5(FALSE);
nvicEnableVector(STM32_UART5_NUMBER, STM32_SERIAL_UART5_PRIORITY);
}
#endif
#if STM32_SERIAL_USE_USART6
if (&SD6 == sdp) {
rccEnableUSART6(FALSE);
nvicEnableVector(STM32_USART6_NUMBER, STM32_SERIAL_USART6_PRIORITY);
}
#endif
#if STM32_SERIAL_USE_UART7
if (&SD7 == sdp) {
rccEnableUART7(FALSE);
nvicEnableVector(STM32_UART7_NUMBER, STM32_SERIAL_UART7_PRIORITY);
}
#endif
#if STM32_SERIAL_USE_UART8
if (&SD8 == sdp) {
rccEnableUART8(FALSE);
nvicEnableVector(STM32_UART8_NUMBER, STM32_SERIAL_UART8_PRIORITY);
}
#endif
}
usart_init(sdp, config);
}
/**
* @brief Low level serial driver configuration and (re)start.
*
* @param[in] sdp pointer to a @p SerialDriver object
* @param[in] config the architecture-dependent serial driver configuration.
* If this parameter is set to @p NULL then a default
* configuration is used.
*
* @notapi
*/
void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) {
if (config == NULL)
config = &default_config;
if (sdp->state == SD_STOP) {
#if STM32_SERIAL_USE_USART1
if (&SD1 == sdp) {
rccEnableUSART1(FALSE);
}
#endif
#if STM32_SERIAL_USE_USART2
if (&SD2 == sdp) {
rccEnableUSART2(FALSE);
}
#endif
#if STM32_SERIAL_USE_USART3
if (&SD3 == sdp) {
rccEnableUSART3(FALSE);
}
#endif
#if STM32_SERIAL_USE_UART4
if (&SD4 == sdp) {
rccEnableUART4(FALSE);
}
#endif
#if STM32_SERIAL_USE_UART5
if (&SD5 == sdp) {
rccEnableUART5(FALSE);
}
#endif
#if STM32_SERIAL_USE_USART6
if (&SD6 == sdp) {
rccEnableUSART6(FALSE);
}
#endif
#if STM32_SERIAL_USE_UART7
if (&SD7 == sdp) {
rccEnableUART7(FALSE);
}
#endif
#if STM32_SERIAL_USE_UART8
if (&SD8 == sdp) {
rccEnableUART8(FALSE);
}
#endif
#if STM32_SERIAL_USE_LPUART1
if (&LPSD1 == sdp) {
rccEnableLPUART1(FALSE);
}
#endif
}
usart_init(sdp, config);
}
/**
* @brief Configures and activates the UART peripheral.
*
* @param[in] uartp pointer to the @p UARTDriver object
*
* @notapi
*/
void uart_lld_start(UARTDriver *uartp) {
if (uartp->state == UART_STOP) {
#if STM32_UART_USE_USART1
if (&UARTD1 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART1_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART1_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUSART1(FALSE);
nvicEnableVector(STM32_USART1_NUMBER, STM32_UART_USART1_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART1_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART1_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART2
if (&UARTD2 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART2_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART2_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUSART2(FALSE);
nvicEnableVector(STM32_USART2_NUMBER, STM32_UART_USART2_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART2_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART2_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART3
if (&UARTD3 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART3_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART3_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUSART3(FALSE);
nvicEnableVector(STM32_USART3_NUMBER, STM32_UART_USART3_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART3_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART3_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_UART4
if (&UARTD4 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_UART4_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_UART4_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUART4(FALSE);
nvicEnableVector(STM32_UART4_NUMBER, STM32_UART_UART4_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(UART4_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_UART4_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_UART5
if (&UARTD5 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_UART5_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_UART5_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUART5(FALSE);
nvicEnableVector(STM32_UART5_NUMBER, STM32_UART_UART5_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(UART5_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_UART5_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_USART6
if (&UARTD6 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_USART6_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_USART6_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUSART6(FALSE);
nvicEnableVector(STM32_USART6_NUMBER, STM32_UART_USART6_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(USART6_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_USART6_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_UART7
if (&UARTD7 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_UART7_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_UART7_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUART7(FALSE);
nvicEnableVector(STM32_UART7_NUMBER, STM32_UART_UART7_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(UART7_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_UART7_DMA_PRIORITY);
}
#endif
#if STM32_UART_USE_UART8
if (&UARTD8 == uartp) {
bool b;
b = dmaStreamAllocate(uartp->dmarx,
STM32_UART_UART8_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_rx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
b = dmaStreamAllocate(uartp->dmatx,
STM32_UART_UART8_IRQ_PRIORITY,
(stm32_dmaisr_t)uart_lld_serve_tx_end_irq,
(void *)uartp);
osalDbgAssert(!b, "stream already allocated");
rccEnableUART8(FALSE);
nvicEnableVector(STM32_UART8_NUMBER, STM32_UART_UART8_IRQ_PRIORITY);
uartp->dmamode |= STM32_DMA_CR_CHSEL(UART8_RX_DMA_CHANNEL) |
STM32_DMA_CR_PL(STM32_UART_UART8_DMA_PRIORITY);
}
#endif
/* 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.*/
if ((uartp->config->cr1 & (USART_CR1_M | USART_CR1_PCE)) == USART_CR1_M)
uartp->dmamode |= STM32_DMA_CR_PSIZE_HWORD | STM32_DMA_CR_MSIZE_HWORD;
dmaStreamSetPeripheral(uartp->dmarx, &uartp->usart->RDR);
dmaStreamSetPeripheral(uartp->dmatx, &uartp->usart->TDR);
uartp->rxbuf = 0;
}
uartp->rxstate = UART_RX_IDLE;
uartp->txstate = UART_TX_IDLE;
usart_start(uartp);
}