PySerial 可以读但不能写 [英] PySerial can read but not write

问题描述

我正在尝试使用 PySerial 连接到 FTDI FT232R 芯片.我已验证与 RealTerm 的通信，并且使用 RealTerm 可以发送和接收数据.但是，我在 Python 中的实现只能接收数据.

I'm trying to use PySerial to connect to an FTDI FT232R chip. I have verified communication with my RealTerm and, using RealTerm, can both send and receive data. However, my implementation in Python can only receive data.

我正在尝试使用此行进行编写:

I am trying to write using this line:

for i in range(0,100):
    print "Loop "+str(i)
    print "Sending byte"
    ser.flush()
    print ser.write("B".encode('ascii'))
    time.sleep(1)

推荐答案

通信取决于芯片的配置、连接线和PySerial的参数.

Comunication depends on the configuration of the chip, the connecting cable and the parameters of PySerial.

这看起来像是电缆连接或通信协议(握手)的问题.

This looks like a problem of the connections of the cable or the communications protocol (handshaking).

最后一个是最容易检查的.它可以是 Xon/Xoff、硬件或无，但两边必须相同.

This last one is the simplest to check. It can be Xon/Xoff, hardware, or none, but it has to be the same at both sides.

如果握手是通过硬件进行的，则它依赖于除 trx 和 rcv 之外的电缆的其他线路.

If the handshaking is by hardware it depends on other lines of the cable besides trx and rcv.

这篇关于PySerial 可以读但不能写的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！