USB Vbus Sensing on genral IO with ST USB midlleware

[o gaste]

Posted on June 20, 2017 at 13:47

Hi all

I'm using a STM32F405RG with CubeMx and Keil (over SWD for flash & debug)

it's embedded on a 3party board that (obviously) we didn't design

unfortunately they didn't put the USB - VBus sensing pin on PA9 as it should but on PA8 to use PA9 as a USART TX

I tried to dig into native Firmware of this board (that use old ST usb midlleware) but I didnt figured out how start th USB init

does anybody already tried to configure USB midlleware using another GPIO that the one dedicated for VBUS sensing ?

thank's for your help

[o gaste]

Posted on June 21, 2017 at 09:59

and if I short PA9 (dedicated VBUS Sensing pin) and PA8 it works :S