void Uart_t::Init(uint32_t ABaudrate,
GPIO_TypeDef *PGpioTx, const uint16_t APinTx,
GPIO_TypeDef *PGpioRx, const uint16_t APinRx) {
#else
void Uart_t::Init(uint32_t ABaudrate, GPIO_TypeDef *PGpioTx, const uint16_t APinTx) {
#endif
PinSetupAlterFunc(PGpioTx, APinTx, omPushPull, pudNone, UART_AF);
IBaudrate = ABaudrate;
// ==== USART configuration ====
if (UART == USART1) { rccEnableUSART1(FALSE); }
else if(UART == USART2) { rccEnableUSART2(FALSE); }
#if defined STM32F072xB
// Setup HSI as UART's clk src
if(UART == USART1) RCC->CFGR3 |= RCC_CFGR3_USART1SW_HSI;
else if(UART == USART2) RCC->CFGR3 |= RCC_CFGR3_USART2SW_HSI;
OnAHBFreqChange();
#else
OnAHBFreqChange(); // Setup baudrate
#endif
UART->CR2 = 0;
#if UART_USE_DMA // ==== DMA ====
// Remap DMA request if needed
#if defined STM32F0XX
if(UART_DMA_TX == STM32_DMA1_STREAM4) SYSCFG->CFGR1 |= SYSCFG_CFGR1_USART1TX_DMA_RMP;
#endif
dmaStreamAllocate (UART_DMA_TX, IRQ_PRIO_MEDIUM, CmdUartTxIrq, NULL);
dmaStreamSetPeripheral(UART_DMA_TX, &UART_TX_REG);
dmaStreamSetMode (UART_DMA_TX, UART_DMA_TX_MODE);
IDmaIsIdle = true;
#endif
#if UART_RX_ENABLED
UART->CR1 = USART_CR1_TE | USART_CR1_RE; // TX & RX enable
UART->CR3 = USART_CR3_DMAT | USART_CR3_DMAR; // Enable DMA at TX & RX
PinSetupAlterFunc(PGpioRx, APinRx, omOpenDrain, pudPullUp, UART_AF);
// Remap DMA request if needed
#if defined STM32F0XX
if(UART_DMA_RX == STM32_DMA1_STREAM5) SYSCFG->CFGR1 |= SYSCFG_CFGR1_USART1RX_DMA_RMP;
#endif
dmaStreamAllocate (UART_DMA_RX, IRQ_PRIO_LOW, nullptr, NULL);
dmaStreamSetPeripheral(UART_DMA_RX, &UART_RX_REG);
dmaStreamSetMemory0 (UART_DMA_RX, IRxBuf);
dmaStreamSetTransactionSize(UART_DMA_RX, UART_RXBUF_SZ);
dmaStreamSetMode (UART_DMA_RX, UART_DMA_RX_MODE);
dmaStreamEnable (UART_DMA_RX);
// Thread
IPThd = chThdCreateStatic(waUartRxThread, sizeof(waUartRxThread), LOWPRIO, UartRxThread, NULL);
#else
UART->CR1 = USART_CR1_TE; // Transmitter enabled
#if UART_USE_DMA
UART->CR3 = USART_CR3_DMAT; // Enable DMA at transmitter
#endif
#endif
UART->CR1 |= USART_CR1_UE; // Enable USART
}
void Uart_t::Init(uint32_t ABaudrate, GPIO_TypeDef *PGpioTx, const uint16_t APinTx, GPIO_TypeDef *PGpioRx, const uint16_t APinRx) {
#else
void Uart_t::Init(uint32_t ABaudrate, GPIO_TypeDef *PGpioTx, const uint16_t APinTx) {
#endif
PinSetupAlterFunc(PGpioTx, APinTx, omPushPull, pudNone, UART_AF);
IBaudrate = ABaudrate;
// ==== USART configuration ====
if(UART == USART1) {rccEnableUSART1(FALSE); }
else if(UART == USART2) {rccEnableUSART2(FALSE); }
OnAHBFreqChange(); // Setup baudrate
UART->CR2 = 0;
#if UART_USE_DMA // ==== DMA ====
dmaStreamAllocate (UART_DMA_TX, IRQ_PRIO_MEDIUM, CmdUartTxIrq, NULL);
dmaStreamSetPeripheral(UART_DMA_TX, &UART_TX_REG);
dmaStreamSetMode (UART_DMA_TX, UART_DMA_TX_MODE);
IDmaIsIdle = true;
#endif
#if UART_RX_ENABLED
UART->CR1 = USART_CR1_TE | USART_CR1_RE; // TX & RX enable
UART->CR3 = USART_CR3_DMAT | USART_CR3_DMAR; // Enable DMA at TX & RX
PinSetupAlterFunc(PGpioRx, APinRx, omOpenDrain, pudPullUp, UART_AF);
dmaStreamAllocate (UART_DMA_RX, IRQ_PRIO_LOW, nullptr, NULL);
dmaStreamSetPeripheral(UART_DMA_RX, &UART_RX_REG);
dmaStreamSetMemory0 (UART_DMA_RX, IRxBuf);
dmaStreamSetTransactionSize(UART_DMA_RX, UART_RXBUF_SZ);
dmaStreamSetMode (UART_DMA_RX, UART_DMA_RX_MODE);
dmaStreamEnable (UART_DMA_RX);
// Thread
IPThd = chThdCreateStatic(waUartRxThread, sizeof(waUartRxThread), LOWPRIO, UartRxThread, NULL);
#else
UART->CR1 = USART_CR1_TE; // Transmitter enabled
#if UART_USE_DMA
UART->CR3 = USART_CR3_DMAT; // Enable DMA at transmitter
#endif
#endif
UART->CR1 |= USART_CR1_UE; // Enable USART
}
