The invention discloses a UART software implementation method based on a low-voltage IOT sensing terminal, and provides a multi-sampling grouping judgment method, which is used for carrying out sampling analysis on irregular waveform groups by distributing different weight coefficients to each group of sampling data, and therefore the collection accuracy of irregular serial port waveforms is greatly improved. A software-defined UART communication interface only needs one timer and two I/O pins, data receiving and sending can be completed under the control of the same timer, and a full-duplex asynchronous serial port communication mode is achieved. The method solves the problems of long transition time and short maintenance time of serial port waveform change of interactive equipment and high bit error rate of data received by adopting a hardware UART serial port in practical application, and has very strong engineering practicability.

Ge Yulei

Papers

UART software implementation method based on low-voltage Internet of Things sensing terminal