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STM32F373 USB DFU Bootloader

kbuyukcelen
Associate II

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.

3 REPLIES 3
Uwe Bonnes
Principal III

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

kbuyukcelen
Associate II

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
Principal III

Jump to bootloader will give many hits here.