/* UART in mode Receiver ---*/ if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)) { UART_Receive_IT(huart); } /* If Overrun error occurs, or if any error occurs in DMA mode reception, consider error as blocking */ dmarequest = HAL_IS_...
/* UART in mode Receiver ---*/ if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)) { UART_Receive_IT(huart); } /* If Overrun error occurs, or if any error occurs in DMA mode reception, consider error as blocking */ dmarequest = HAL_I...
当receiver FIFO指针大于阈值,receiver endpoint就会通过TX口发送XOFF命令给transmit endpoint,让其停止发送;当receiver FIFO的指针小于阈值时,receiver endpoint 发送XON命令给transmitter,让其开始发送【可以看出,XOFF/XON是接收方发给发送方的,与数据传输的方向相反】。
You could put in a long delay prior to the initialization code to find that out. Or try running the same code from RAM in No Boot mode from the emulator, but be sure to remove the GEL file or at least get rid of any initialization from the GEL file, such as in the OnTargetC...
1intUARTCharGet(unsignedint baseAdd)2{3intdata =0;45/*6** Busy check if data is available in receiver FIFO(RBR regsiter in non-FIFO7** mode) so that data could be read from the RBR register.8*/9while((HWREG(baseAdd + UART_LSR) & UART_DATA_READY) ==0);1011data = (int)HWRE...
UART receiver enable. Note do not enable receive before uart is fully configured. 0:Receiver ...
通用异步收发器缩写UART,这是UNIVERSAL ASYNCHRONOUS RECEIVER AND TRANSMITTER。它被用来传送串行数据。当发送数据,CPU将并行数据写入UART,UART依照一定的格式在一根电线上串行发出;接收数据 时。UART检測还有一根电线的信号,将串行收集在缓冲区中。CPU就可以读取UART获得这些数据。
通用异步收发传输器(Universal Asynchronous Receiver/Transmitter,通常称为UART)是一种异步收发传输器,用处非常广泛,几乎两个单片机间的通讯、USB-TTL、RS-232都是使用UART协]协议,将数据通过串列通讯进行传输。 它在发送端执行并行到串行数据转换,在接收端执行串行...
参考STC单片机手册，接收/发送寄存器虽然名字相同，但物理上是2个不同的寄存器，一个只能读取，一个只能...