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@@ -45,6 +45,7 @@ struct stm32_uart
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{
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USART_TypeDef *uart_device;
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IRQn_Type irq;
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+#ifdef RT_SERIAL_USING_DMA
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struct stm32_uart_dma
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{
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/* dma channel */
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@@ -58,9 +59,12 @@ struct stm32_uart
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/* last receive index */
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rt_size_t last_recv_index;
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} dma;
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+#endif /* RT_SERIAL_USING_DMA */
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};
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+#ifdef RT_SERIAL_USING_DMA
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static void DMA_Configuration(struct rt_serial_device *serial);
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+#endif /* RT_SERIAL_USING_DMA */
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static rt_err_t stm32_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
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{
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@@ -107,7 +111,6 @@ static rt_err_t stm32_configure(struct rt_serial_device *serial, struct serial_c
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static rt_err_t stm32_control(struct rt_serial_device *serial, int cmd, void *arg)
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{
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struct stm32_uart* uart;
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- rt_uint32_t ctrl_arg = (rt_uint32_t)(arg);
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RT_ASSERT(serial != RT_NULL);
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uart = (struct stm32_uart *)serial->parent.user_data;
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@@ -128,12 +131,14 @@ static rt_err_t stm32_control(struct rt_serial_device *serial, int cmd, void *ar
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/* enable interrupt */
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USART_ITConfig(uart->uart_device, USART_IT_RXNE, ENABLE);
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break;
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+#ifdef RT_SERIAL_USING_DMA
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/* USART config */
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case RT_DEVICE_CTRL_CONFIG :
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- if (ctrl_arg == RT_DEVICE_FLAG_DMA_RX) {
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+ if ((rt_uint32_t)(arg) == RT_DEVICE_FLAG_DMA_RX) {
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DMA_Configuration(serial);
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}
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break;
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+#endif /* RT_SERIAL_USING_DMA */
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}
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return RT_EOK;
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}
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@@ -182,6 +187,7 @@ static int stm32_getc(struct rt_serial_device *serial)
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return ch;
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}
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+#ifdef RT_SERIAL_USING_DMA
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/**
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* Serial port receive idle process. This need add to uart idle ISR.
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*
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@@ -231,6 +237,7 @@ static void dma_rx_done_isr(struct rt_serial_device *serial) {
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DMA_ClearFlag(uart->dma.rx_gl_flag);
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}
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+#endif /* RT_SERIAL_USING_DMA */
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/**
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* Uart common interrupt process. This need add to uart ISR.
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@@ -251,10 +258,12 @@ static void uart_isr(struct rt_serial_device *serial) {
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/* clear interrupt */
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USART_ClearITPendingBit(uart->uart_device, USART_IT_RXNE);
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}
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+#ifdef RT_SERIAL_USING_DMA
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if(USART_GetITStatus(uart->uart_device, USART_IT_IDLE) != RESET)
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{
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dma_uart_rx_idle_isr(serial);
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}
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+#endif /* RT_SERIAL_USING_DMA */
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if (USART_GetITStatus(uart->uart_device, USART_IT_TC) != RESET)
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{
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/* clear interrupt */
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@@ -284,6 +293,7 @@ static const struct rt_uart_ops stm32_uart_ops =
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struct stm32_uart uart1 =
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{
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USART1,
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+#ifdef RT_SERIAL_USING_DMA
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USART1_IRQn,
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{
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DMA1_Channel5,
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@@ -291,6 +301,7 @@ struct stm32_uart uart1 =
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DMA1_Channel5_IRQn,
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0,
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},
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+#endif /* RT_SERIAL_USING_DMA */
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};
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struct rt_serial_device serial1;
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@@ -305,6 +316,7 @@ void USART1_IRQHandler(void)
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rt_interrupt_leave();
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}
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+#ifdef RT_SERIAL_USING_DMA
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void DMA1_Channel5_IRQHandler(void) {
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/* enter interrupt */
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rt_interrupt_enter();
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@@ -314,6 +326,8 @@ void DMA1_Channel5_IRQHandler(void) {
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/* leave interrupt */
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rt_interrupt_leave();
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}
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+#endif /* RT_SERIAL_USING_DMA */
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+
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#endif /* RT_USING_UART1 */
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#if defined(RT_USING_UART2)
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@@ -321,6 +335,7 @@ void DMA1_Channel5_IRQHandler(void) {
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struct stm32_uart uart2 =
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{
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USART2,
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+#ifdef RT_SERIAL_USING_DMA
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USART2_IRQn,
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{
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DMA1_Channel6,
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@@ -328,6 +343,7 @@ struct stm32_uart uart2 =
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DMA1_Channel6_IRQn,
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0,
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},
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+#endif /* RT_SERIAL_USING_DMA */
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};
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struct rt_serial_device serial2;
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@@ -342,6 +358,7 @@ void USART2_IRQHandler(void)
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rt_interrupt_leave();
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}
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+#ifdef RT_SERIAL_USING_DMA
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void DMA1_Channel6_IRQHandler(void) {
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/* enter interrupt */
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rt_interrupt_enter();
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@@ -351,6 +368,8 @@ void DMA1_Channel6_IRQHandler(void) {
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/* leave interrupt */
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rt_interrupt_leave();
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}
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+#endif /* RT_SERIAL_USING_DMA */
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+
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#endif /* RT_USING_UART2 */
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#if defined(RT_USING_UART3)
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@@ -358,6 +377,7 @@ void DMA1_Channel6_IRQHandler(void) {
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struct stm32_uart uart3 =
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{
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USART3,
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+#ifdef RT_SERIAL_USING_DMA
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USART3_IRQn,
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{
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DMA1_Channel3,
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@@ -365,6 +385,7 @@ struct stm32_uart uart3 =
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DMA1_Channel3_IRQn,
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0,
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},
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+#endif /* RT_SERIAL_USING_DMA */
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};
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struct rt_serial_device serial3;
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@@ -379,6 +400,7 @@ void USART3_IRQHandler(void)
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rt_interrupt_leave();
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}
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+#ifdef RT_SERIAL_USING_DMA
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void DMA1_Channel3_IRQHandler(void) {
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/* enter interrupt */
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rt_interrupt_enter();
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@@ -388,6 +410,8 @@ void DMA1_Channel3_IRQHandler(void) {
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/* leave interrupt */
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rt_interrupt_leave();
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}
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+#endif /* RT_SERIAL_USING_DMA */
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+
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#endif /* RT_USING_UART3 */
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#if defined(RT_USING_UART4)
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@@ -395,6 +419,7 @@ void DMA1_Channel3_IRQHandler(void) {
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struct stm32_uart uart4 =
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{
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UART4,
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+#ifdef RT_SERIAL_USING_DMA
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UART4_IRQn,
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{
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DMA2_Channel3,
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@@ -402,6 +427,7 @@ struct stm32_uart uart4 =
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DMA2_Channel3_IRQn,
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0,
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},
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+#endif /* RT_SERIAL_USING_DMA */
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};
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struct rt_serial_device serial4;
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@@ -416,6 +442,7 @@ void UART4_IRQHandler(void)
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rt_interrupt_leave();
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}
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+#ifdef RT_SERIAL_USING_DMA
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void DMA2_Channel3_IRQHandler(void) {
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/* enter interrupt */
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rt_interrupt_enter();
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@@ -425,6 +452,8 @@ void DMA2_Channel3_IRQHandler(void) {
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/* leave interrupt */
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rt_interrupt_leave();
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}
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+#endif /* RT_SERIAL_USING_DMA */
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+
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#endif /* RT_USING_UART4 */
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static void RCC_Configuration(void)
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@@ -521,6 +550,7 @@ static void NVIC_Configuration(struct stm32_uart* uart)
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NVIC_Init(&NVIC_InitStructure);
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}
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+#ifdef RT_SERIAL_USING_DMA
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static void DMA_Configuration(struct rt_serial_device *serial) {
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struct stm32_uart *uart = (struct stm32_uart *) serial->parent.user_data;
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struct rt_serial_rx_fifo *rx_fifo = (struct rt_serial_rx_fifo *)serial->serial_rx;
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@@ -562,6 +592,7 @@ static void DMA_Configuration(struct rt_serial_device *serial) {
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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+#endif /* RT_SERIAL_USING_DMA */
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void rt_hw_usart_init(void)
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{
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