Re: [libusb] No reply from the device (timeout)

[Xiaofan C. <xia...@gm...>]

On Thu, Sep 9, 2021 at 3:45 PM Stefano Mora <S....@am...> wrote:
>
>
> Hi all,
> I'm writing a program to talk with a POS terminal.
> The program is a Linux C program using libusb library.
>
> The device is visible and detected:

Do you know the communication protocol of the POS terminal?
In order to use libusb to talk to the device, you have to know that.
If not then you need to carry out reverse engineering.

An example here using pyusb.
https://slomkowski.eu/tutorials/eavesdropping-usb-and-writing-driver-in-python/


-- 
Xiaofan