10/31/2019 Ftdi Usb To Serial Driver Chip
Note: Cables with FTDI chipsets are compatible with all Windows drivers. New Prolific Drivers may give a FALSE Positive: (6-2015) Windows will now load the newest Prolific driver 3.6.78.350 when inserting your cable.
Hardware: Any FTDI FT230X series USB-serial device (custom FT230X board, UMFT230XB-NC module, UMFT230XA module etc.).
Software: Visual Basic - Serial Port. OpSys: Win7 (64-bit) and Win10
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[PC] ----- USB cable -------- [FTDI FT230X USB-UART device][TX, RX, RTS signals]
Issue1: Whenever an FT230X device is connected or powered up and Windows scans for USB devices, the RTS line is toggled
Issue2: Whenever the FT230X RTS line is toggled using RTSenable, the TX line (if low using BreakState) toggles high.
Code Example:
SerialPort1.BreakState = True ' Rx low (sets Rx line low)
SerialPort1.RtsEnable = True ' RTS low (sets RTS line low AND Rx high) SerialPort1.RtsEnable = False ' RTS high (setsRTS line high) SerialPort1.BreakState = False ' Rx high (this has no effect since Rx is already high)
Toggling RTS should have no effect on the TX line. The issue only occurs with the FT230X chip. The same VB code running a PICkit Serial module works properly i.e. toggling RTS has no effect on TX.
Has anyone else seen this issue before, can duplicate it or shed some light on the issue?
Thanks, Ken
When you troubleshoot issues with a serial device, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:
To test your setup components, try the following:
When you test your cables, it is recommended that you do the following:
Free full lr movies. When you test the serial ports and serial device, it is recommended that you do the following:
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Ftdi Usb To Serial Driver Windows 10
Note: Some serial devices work only if the COM port number is between a certain range. For example, COM1 to COM4.
Ftdi
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