Hello.
I've got a problem with the STM32F401 code generator. I want to use some interfaces, especially the USB OTG.
When other interfaces are selected (GPIOs, SPI, UARTS...) no problem occurs, but when I try to disable the USB OTG interface, the clock tab get a red cross and this error message appears :
"Cannot found a solution for some constraint"
Screenshots : http://hpics.li/a034794
And the HSI of PLL Source Mux is red surrounded. I can't change the PLL Source on the mux, and constants which are availabe to change don't give a good result.
What can I do for resolve this problem ? I need your help :)
Thank's a lot
Romain Delaméa E,RE,C,A France
To meet specification the USB clock needs to be derived from the HSE source.