Hi guys,
I'm porting a firmware bootloader from STM32F4 to STM32F7.
The bootloader firmware manages a timeout of 7" where if usb key is detected, the firmware upgrade happens, otherwise the bootloader jumps to application.
At the end of works I had that sometimes the STM32F7 doesn't recognize some usbkey.
Indeed, the STM32F4 version always recognize them.
After soma hacking I found that the problem stays at line 291 of usbh_msc.c file in STM32_USB_HOST_Library of STM32CubeF7 1.15 (here in bold):
MSC_Handle->max_lun = (MSC_Handle->max_lun > MAX_SUPPORTED_LUN)? MAX_SUPPORTED_LUN : (uint8_t )(MSC_Handle->max_lun) + 1U;
So I patched with the missing casting:
MSC_Handle->max_lun = (((uint8_t )MSC_Handle->max_lun) > MAX_SUPPORTED_LUN)? MAX_SUPPORTED_LUN : (uint8_t )(MSC_Handle->max_lun) + 1U;
and the STM32F7 version works as STM32F4 version.
I hope this may help anyone needs.
Best regards.
Davide.
