Method and device for regulating baud rate

Abstract

The invention discloses a method and a device for regulating a baud rate. The method comprises the following steps of: receiving data which are transmitted by a universal asynchronous serial transmitter in a preset first baud rate; checking the data which are received currently; when determining that a data receiving error exists according to a checking result, regulating a data receiving baud rate according to a preset baud rate regulation threshold, receiving the data which are transmitted by the universal asynchronous serial transmitter in a regulated baud rate, and returning a checking result of the received data; and when determining that the data receiving error does not exist according to the checking result, receiving the data in a currently receiving data baud rate which is used as the first baud rate. By the method, when detecting that the data receiving error exists in a receiver, the baud rate for receiving data of the receiver can be automatically regulated to ensure that the baud rates of the receiver and the transmitter are maintained uniformly, so that normal data communication can be ensured.

Description

technical field [0001] The present invention relates to the technical field of data communication, and more specifically relates to a method and device for adjusting baud rate. Background technique [0002] USART (Universal Synchronous / Asynchronous Receiver / Transmitter), is a universal synchronous / asynchronous serial transceiver module. When performing asynchronous serial communication based on the USART module, the sender and the receiver use their own clocks to control the sending and receiving of data. In order to coordinate the sending and receiving between the sender and receiver, the clocks of the sender and receiver need to be as consistent as possible. [0003] In the actual process of using USART for serial communication, the baud rate of the data received by the receiver often does not match the baud rate of the data sent by the sender due to the clock deviation of the two parties in the communication, which leads to the inaccurate reception of data by the receive...

AI Technical Summary

Problems solved by technology

[0003] In the actual process of using USART for serial communication, the baud rate of the data received by the receiver often does not match the baud rate of the data sent by the sender due to the clock deviation of the two parties in the communication, which leads to the inaccurate reception of data by the receiver. Normal, which reduces the reliability of data transmission and even affects normal data communication

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