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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 PC - USB cable - FTDI FT230X USB-UART deviceTX, 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.
This answer is spot on, either FTDI, or use a processor with USB support. The advantage of the FTDI is also its drivers are really good and easy to access for serial port applications, proved reliability. Using a uP with USB support and software stack will require limit your uP selection, and require drivers and more software effort. Latest FTDI Virtual COM PORT (VCP) Drivers - The latest VCP Drivers found on FTDI’s website. SparkFun’s USB Serial Driver Quick Install Tutorial - A condensed version of our “How to Install FTDI Drivers.
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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?
The brand is Transystem i-Blue. But this device worked properly since years. It worked with MountainLion, with mavericks - but not with Yosemite.
As far as I can see, it is not a question of the device. The driver is not installed at all. Looking for the driver after installation, the only answer is: ls /dev/cu. /dev/cu.Bluetooth-Incoming-Port /dev/cu.Bluetooth-Modem I tried to install FTDI, Profilic and the original driver delivered with HoughaGPS. Even though, the installer shows 'insatllation successful'. Apple Footer.
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