如果发送数据,则会进行发送中断处理函数 /* UART in mode Transmitter ---*/ if (((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET)) { UART_Transmit_IT(huart); return; } 1. 2. 3. 4. 5. 6. 3串口查询函数 HAL_UART_GetState(); 判断UART的接收是否...
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...
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){...
An universal asynchronous receiver/transmitter (UART) is a hardware feature that processes communications (i.e. timing requirements and data frames) using widely adopted asynchronous serial communication interfaces such as RS232, RS422, and RS485. UART provides a widely adopted and inexpensive way to...
Application enables DMA & UART in transmitter mode. Transmit starts immediately when UART requests first byte via DMA to be shifted to UART TX register Application is notified byTCevent (or interrupt) after all bytes have been transmitted from memory to UART via DMA ...
In UART, the mode of transmission is in the form of a packet. The piece that connects the transmitter and receiver includes the creation of serial packets and controls those physical hardware lines. A packet consists of a start bit, data frame, a parity bit, and stop bits. ...
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¶ ...
UART:Universal Asynchronous Receiver/Transmitter,通用异步收发器。 USART:Universal Synchronous/Asynchronous Receiver/Transmitter,通用同步/异步串行接收/发送器。 UART是一种通用的异步串行通信协议,它使用起始位、数据位、校验位和停止位来传输数据。在UART通信中,数据的传输是通过固定的波特率进行的,发送和接收端需要事...
通用异步收发传输器,即为UART(Universal Asynchronous Receiver/Transmitter),是一种常见的数据通信协议,用于在计算机和外部设备之间传输数据。UART通信是一种异步通信方式,它通过串行数据传输,允许设备之间以逐位的方式交换信息,并且UART是通用的,因为其的传输速度、数据速度和其他的参数是可配置的。