usb serial port

  1. yo3ggx

    B4J Question jSerial, Windows 10 and USB Serial

    Hello, I have a small application written in b4j that connects to a device over a serial COM Port (USB Serial based on CP21x02). Everything was perfect until last week, when the communication stopped working over USB/Serial. I've suspected an issue with the device or the USB/Serial Interface...
  2. Didier9

    Android Question How to open a serial port via USB [solved]

    I need to get data from an FTDI chip connected through the USB connector. When I connect the device, it wants to open my Square app (!) so I guess the hardware is working... The issue is how to I open the port under B4A. I have routines for talking to a serial via Bluetooth device but not a hard...