2016-11-02 02:18 PM
I have a USB CDC project that works fine with the STM32F072-DISCO board, but when I try to migrate the code over to my own board with an STM32F042 on it the device shows up as an ''STM Device in DFU Mode'' instead of a COM port in my Windows device manager. The code is the same; I've just changed the target processor in my project settings. Are there any differences in how the USB works between the two processors (STM32F072RB vs STM32F042K6) that I need to account for? I'm using the STM32Cube firmware v1.6.0
2016-11-02 09:04 PM
Ensure BOOT0 is pulled low on your board.
2016-11-03 09:37 AM
thanks. that was the problem