DISC1-F407: ControllersTech USB Flash MSC Example not working

[spacemonochrome]

https://controllerstech.com/stm32-usb-host-msc/

I downloaded the app from this site, and the project from 2020 works. However, even though I followed the same tutorial, my code doesn't work in the 2025 version.

[Imen.D]

Hello @spacemonochrome 

Do you have an error message? where the code hangs/stop?

Are you using latest firmware package and tools version?

[spacemonochrome · Accepted solution]

This solved. F407-DISC USB MSC Host 2020 old version usbh_platform.c

if GPIO_Output PC0 state = 1 > GPIO_PIN_Set

if GPIO_Output PC0 state = 0 > GPIO_PIN_Reset

but the 2025 new version its reversed

if GPIO_Output PC0 state = 0 > GPIO_PIN_Set

if GPIO_Output PC0 state = 1 > GPIO_PIN_Reset

I Chance usbh_platform.c and this problem solved

[Andrew Neil]

Thanks for posting the solution!

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@spacemonochrome wrote:

https://controllerstech.com/stm32-usb-host-msc/

I downloaded the app from this site

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Note that it's a third-party site - nothing to do with ST.

You need to report problems with their materials to them:

https://controllerstech.com/contact-us/