11 years, 4 months ago.

USBSerial only transmits

All mbed members and users, I really appreciate your nice job.

I'm very interested in the USB virtual com port of the FRDM KL25Z. So, I'm trying to run the USBSerial example. I've ready installed both windows 7 drivers and the two COM ports appeared ok on the device manager. After reset the board, opened 2 serial terminals, when I type at the one connected at the "Mbed Virtual Serial Port", I can see what I type on the other connected to the same USB connector (used to flash the microcontroller), but nothing on the first one. I mean, the virtual USB COM port, only transmits but not receives. Not even by enabling the flux control DTR/DSR. Where did I go wrong? Tested with TeraTerm and Hercules (HW-group.com), same result.

The example code I used: USBSerial (attached). /media/uploads/Edu/usbserial.txt []

Any light will be very welcome.

Thanks in advance, Edu.