Author Topic: FTDI - Modifying Windows Driver (FT234XD)  (Read 634 times)


  • Member
  • ***
  • Posts: 1
FTDI - Modifying Windows Driver (FT234XD)
« on: October 09, 2017, 10:07:30 pm »

We are trying to modify our Windows Driver to support the FTDI IC. Our driver does not use VCP and works directly with several micro-controllers. Are there any code examples for updating our driver to setup and communicate with the IC? It seems we can do control functions, but not move data. We don't have a baud rate problem. I have almost all FTDI docs including AN115 (API).

Thanks in advance.

Jan Axelson

  • Administrator
  • Frequent Contributor
  • *****
  • Posts: 2747
    • Lakeview Research
Re: FTDI - Modifying Windows Driver (FT234XD)
« Reply #1 on: October 10, 2017, 10:19:02 am »
If FTDI doesn't provide the low-level documentation you need, you might have to reverse engineer the driver using a protocol analyzer to view communications using the FTDI driver.

Or look for clues in open source drivers such as