Hi there,
I got some troubles getting the USB Host system working on the STM32H746ZI.
Worth mentioning is that this is no dev board here, just a plain H7 mcu on a DIY bread board. It is properly supplied with filtered 3.3 and 1.8V. Got UART, I2C, LCD peripherals working fine already. Only this USB host thing wont work at all.
My USB setup:
Pin75 D-
Pin76 D+
VBus pins are not used. USB devices are powered directly from linear 5V supply.
The code and project files are created with STcubeMX. FatFs and USB Host with MSC included.
What happens when I stick in an USB mem stick:
D+ goes high (up to about 0.6V) but no communication, no enumeration visible on the scope... debugging the USB_process loop there is never any change from IDLE state.
any idea what I could check?
