if(((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET)) { UART_Transmit_IT(huart); return; } /* UART in mode Transmitter end ---*/ if(((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET)) { UART_EndTransmit_IT...
/* UART in mode Transmitter ---*/if(((isrflags&USART_SR_TXE)!=RESET)&&((cr1its&USART_CR1_TXEIE)!=RESET)){UART_Transmit_IT(huart);return;} 3串口查询函数 HAL_UART_GetState(); 判断UART的接收是否结束,或者发送数据是否忙碌 举例: 代码语言:javascript 代码运行次数:0 复制 Cloud Studio代码运...
}/*End if some error occurs*//*UART in mode Transmitter ---*/if(((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) !=RESET)) { UART_Transmit_IT(huart);return; }/*UART in mode Transmitter end ---*/if(((isrflags & USART_SR_TC) != RESET) && ((cr1i...
TI_1);//wait until transmitter readyTI_1 = 0;SBUF_1 = c;//output characterreturn (c);}【4】主函数void main (void){u16 count = 0;Set_All_GPIO_Quasi_Mode;InitialUART1_Timer3(115200);//InitialUART1_Timer3printf("Complie Time:%s\r\n", __TIME__);//Complie Timewhile(1){...
UART(Universal Asynchronous Receiver/Transmitter)通用异步收发传输器,UART 作为异步串口通信协议提供标准异步收发模式。是在应用程序开发过程中使用频率最高的数据总线。 UART串口的特点是将数据一位一位地顺序传送,只要 2 根传输线就可以实现双向通信,一根线发送数据的同时用另一根线接收数据。UART 串口通信有几个重要...
学习本章时,配合《IMX6ULRM》Chapter 53 Universal Asynchronous Receiver/Transmitter (UART)一起阅读,效果会更佳,特别是涉及到寄存器说明的部分。 本章主要内容: 串口通信协议,物理层和协议层介绍。 i.MX 6U的UART及功能框图。 UART1收发实验。 12.1.串口通讯协议简介¶ ...
In this situation, the flow control is extremely important: When the receiver is unable to burden more date, it will notify the transmitter to stop sending data. After that, if it is capable to accept, it will notify transmitter again to transmit data. ...
Application sets DMA tonormalmode. This effectively disables DMA once all the bytes are successfully transferred Application enables DMA & UART in transmitter mode. Transmit starts immediately when UART requests first byte via DMA to be shifted to UART TX register ...
In UART, there are different interrupt types and ofcourse, receiver line status would be serviced with highest priority followed by, receiver data-ready& receiver time-out and transmitter holding register empty. We recommend you to ensure the priority of interrrupt sources and interrupt type, ...
发送HCI_LE_Transmitter_Test 命令到设备以后, 会收到如下所述的回复, 表示命令已经被接受并且Tx发送测试模式已经开始: 04 0E 04 01 1E 20 00 开始Rx接收测试的命令:HCI_LE_Receiver_Test 发送这个16进制命令, 开始Rx测试: 01 1D 20 01 xx xx = 你想要接收接收的频段号, 可以是从0x00到0x27之间...