AnsweredAssumed Answered

Virtual COM Port Trouble

Question asked by Scott Gravenhorst on Aug 11, 2017
Latest reply on Aug 18, 2017 by Scott Gravenhorst

Fedora 25 (64 bit)

STM32F746G Discovery board


I've been able to program the board using a simple Makefile project.  The board flashes and runs the program, in this case, a LED flasher that has code to send messages to the Virtual COM Port.


I've been able to see the data with gtkterm -p /dev/ttyACM0 -s 115200


However, it won't work until I run st-util on the host and control C out of it.


I've been informed that all of the functionality I need for VCP is part of OpenOCD and that I need not even have installed the texane software.


I've read the whole OpenOCD manual and I see no solution there.


BTW, I can run openocd and get GDB to work.  I just can't make the VCP work without the st-util "hack".


I really need the VCP for the end application which is a MIDI music synthesizer.  I'd like to verify the the MIDI hardware interface is working properly by sending the hexadecimal values of the MIDI bytes received.


Is there something else I need to read to understand what is going on with this?