COM convert to usb

[Raymond]

If i have a convert interface plug of com to usb ,how can i program to control the usb protocol with com port?
Is there any example code or documents available?

[digo_rp]

if I understood, this is a vendor to vendor specific, cuz an adapter from usb -> com RS232 you have and micro-controler on it, then you have to find a documentation from vendor to vendor, or try to find out on linux kernel.

I hope this helps.

good lock.

[Boris]

Hi, you have to look for the technology behind the port com. Usually what you have is a " FTDI" which is " UART" compliant .
Remember than USB can have high latencies ( +-1ms) which on-board UART controller doesn't have.