uart_state=driver_dma_flag_wait_timeout(uartx->uart_tx_dma,DMA_FLAG_FTF,SET); usart_dma_transmit_config(uartx->uart_x,USART_DENT_DISABLE); driver_dma_start(uartx->uart_tx_dma,pbuff,length); usart_flag_clear(uartx->uart_x,USART_FLAG_TC); usart_dma_transmit_config(uartx->uart_x...
我们将CH340G的TXD引脚与USART的RX引脚连接,CH340G的RXD引脚与USART的TX引脚连接。 5.10.4.软件配置说明 本小节讲解USART_Example历程中USART模块的配置说明,主要包括外设时钟配置、GPIO引脚 配置、USART外设配置、主函数介绍以及运行结果。本例程主要介绍GD32 MCU各系列USART 模块的轮询发送中断接收,有关USART其他功能...
uart_state=driver_dma_flag_wait_timeout(uartx->uart_tx_dma,DMA_FLAG_FTF,SET); usart_dma_transmit_config(uartx->uart_x,USART_DENT_DISABLE); driver_dma_start(uartx->uart_tx_dma,pbuff,length); usart_flag_clear(uartx->uart_x,USART_FLAG_TC); usart_dma_transmit_config(uartx->uart_x...
为利用USART实现开发板与电脑通信,需要用到一个USB转USART的IC,我们选择CH340G芯片来实现这个功能,CH340G是一个USB总线的转接芯片,实现USB转USART、USB转IrDA红外或者USB转打印机接口,我们使用其USB转USART功能。具体电路设计见下图USB转串口硬件设计。 我们将CH340G的TXD引脚与USART的RX引脚连接,CH340G的RXD引脚与...
usart_dma_transmit_config(uartx->uart_x,USART_DENT_ENABLE); usart_interrupt_enable(uartx->uart_x,USART_INT_TC); return uart_state; } 16.4.2串口DMA接收函数 在driver_uart.c中定义了串口DMA接收函数driver_uart_dma_receive: C Drv_Err driver_uart_dma_receive(typdef_uart_struct *uartx,uint8...
usart_dma_transmit_config(USART2, USART_DENT_ENABLE);nvic_irq_enable(DMA0_Channel1_IRQn,2,0);...
usart_dma_transmit_config(USART1, USART_TRANSMIT_DMA_ENABLE);/* deinitialize DMA0 channel5 (USART...
usart_hardware_flow_rts_config(uint32_tusart_periph,uint32_trtsconfig);//设置RTS流控voidusart_hardware_flow_cts_config(uint32_tusart_periph,uint32_tctsconfig);//设置CTS流控voidusart_receive_config(uint32_tusart_periph,uint32_trxconfig);//设置接收使能voidusart_transmit_config(uint32_tusart_...
再初始化DMA通道。贴一段 1intfputc(intch, FILE *f)2{3usart_data_transmit(USART0, (uint8_t)ch);4while(RESET ==usart_flag_get(USART0, USART_FLAG_TBE));5returnch;6} 1voiduart0_dma_config(void)2{3dma_single_data_parameter_struct dma_init_struct;4/*enable DMA1*/5rcu_periph_clock...
再初始化DMA通道。贴⼀段 1int fputc(int ch, FILE *f)2 { 3 usart_data_transmit(USART0, (uint8_t)ch);4while(RESET == usart_flag_get(USART0, USART_FLAG_TBE));5return ch;6 } 1void uart0_dma_config(void)2 { 3 dma_single_data_parameter_struct dma_init_struct;4/* enable...