void send_byte(u8 data) { USART_SendData(USART1,data); while(USART_GetFlagStatus(USART1,USART_FLAG_TC)!=SET); }
时间: 2024-05-31 19:08:49 浏览: 93
This is a function in C programming language that sends a byte of data through USART (Universal Synchronous/Asynchronous Receiver/Transmitter) communication protocol. The function takes an 8-bit unsigned integer variable (u8 data) as input which represents the data byte to be sent.
Inside the function, the USART_SendData() function is used to send the data byte through USART1. This function takes two arguments; the first argument is the USART peripheral to be used for transmission (USART1 in this case) and the second argument is the data byte to be transmitted.
Once the data byte is transmitted, the while loop is used to wait until the USART_FLAG_TC (Transmission Complete) flag is set. This flag indicates that the transmission of the data byte is completed. The USART_GetFlagStatus() function is used to check whether the USART_FLAG_TC flag is set or not. This function takes two arguments; the first argument is the USART peripheral to be used (USART1 in this case) and the second argument is the flag to be checked (USART_FLAG_TC in this case).
The while loop waits until the USART_FLAG_TC flag is set. The SET value of the USART_FLAG_TC flag indicates that the transmission of the data byte is completed. Once the USART_FLAG_TC flag is set, the while loop terminates and the function returns.
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