> On 22 Dec 2022, at 17:09, Patrick EGLOFF <pegl...@gmail.com> wrote: > > Hi all, > > I use Python 3.10.9 and Pyserial 3.5 on a Win10 machine. > > I'm sending datas via an USB port to a device that accept commands in the > form of : cmd; > The device receives and reacts to the commands sent, and it should reply > with an ACK of the same kind. > > But looking with a COM port sniffer, nothing is sent back. > > I checked that everything is working with PUTTY and even MINITERM, and > everything is just fine, the device is responding correctly. > > I have set the flow control to different values, as well as setting the RTS > and DTR high or low with no change. > Normally, the device works without any flow control, and CTS + DTR high. > > I checked with MINITERM, that the flow control and control lines have the > same state. > > I'm a bit surprised and stucked. > Can someone help ?
Please post tour code that you are using to talk to the device. Barry > Thanks, > -- > Patrick Egloff > email : pegl...@gmail.com > Web page : http://www.egloff.eu > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list