STM32F373 USB DFU Bootloader

[kbuyukcelen]

Hello, I've developed a board and trying to update the firmware with usb.

My board has lcd display, and I want to display "Firmware Update Mode" while the device is in bootloader mode.

Can I catch an interrupt to write something to LCD?

Also, how can I read current firmware version from USB?

Thanks.

[Uwe Bonnes]

If you enter bootloader from external reset ot power on, no chance. Otherwise write to the display before entering the bootloader.

[kbuyukcelen]

Ok thank you, I have to write to the display and programatically jump to bootloader.

Also, this is my first experience with USB, I have to read a few parameters from my device. What topic should I search on google? I'm really lost in non-documented codes :(

[Uwe Bonnes]

Jump to bootloader will give many hits here.