I have some trouble to configure my u-controller as a composite device. I followed the tutorial on www.keil.com/.../dev_comp_tutorial.html.
The example projects HID and mass storage works both if I use them individual. I only had to adjust the example projects from high speed to full speed mode because HS isn't supported on our hardware.
But if I combine the two projects as suggested in the tutorial only HID works. I'm not able to get both(HID and MSD) simultaneous run.
Could there be an issue inside the CMSIS Driver for stm32f4xx or is the full speed mode the problem. Has someone some hint, what could be wrong or can approve that it works in full speed on a stm32f437?
Thank you very much Best regards Simon
The problem was the stack size. I had forgotten to adjust the stack size, the user provided stacksize and the number of supported threads. If these settings ar well done, everything works as expected.