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Reading back from usb device

Embedded World
Prodigy 170 points

I have a device which can communicate with PC. When I connect it to PC it forms a vitual com port, it has Silabs virtual com IC in it . Then I send 'A' from termianl & it responds back with ack.

Now instead of reading it from PC, I want to read it with help of my host microcontroller card.
How to do that. I can run UART interface. Should I put another UBS-uart converter in between.
But device form virtual com port. If I connect my host controller what should I do initially.

  • 0
    Guru 227245 points

    The virtual COM port on PC is just a simulation. It makes it easier for software to get the data, by simulating a OCM port while in fact data is coming as USB packets.
    To connect the device to a host MCU card, this host card needs to provide an USB host controller and also interpret the data properly, as it is done by the PC virtual Com port driver.

    It might be a better idea to reprogram the device (if possible) to communicate with a real UART then.

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