I have sucessfully managed to creat an arduino project that communicates button presses and touchpad info to the tracker via USB.
for arduino limitation reasons I now need to use an STM32F4 board to develop further. I have tried to implement the USB communication to the tracker but with little success. I am convinced that the USB comms are working, initial setup works and tracker usb data can be seen in the class structure, however whenevver I try to send packets B3 or B4 the tracker seems to freeze.
Has anyone managed to communicate with a tracker using USB to send button presses with a microcontroller?