Main Site Documentation

Hints on communicating with USB modem


I have a USB 56k V92 fax/modem and want to communicate with it via the Cobra USB host port.

It seems that I need to use it in CDC mode to emulate a serial port, is this correct?

The following line of code causes an InvalidOperationException to be thrown, so perhaps CDC is not what I need;

USBC_CDC cdc = USBClientController.StandardDevices.StartCDC();

Am I barking up the wrong tree? Has anyone got a hint or code sample that will allow me to send AT commands to the modem?

Thanks in advace



Your example code is for USBClinet not USB host. See CDC for USB host.

There are examples in the free ebook already