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blackpillv2: clarify how to enter to bootloader mode 

According to [1] all PCB revisions have BOOT0 and NRST labels near
buttons. Reference those in README for ease of use.

PB2/BOOT1 has a 10k pull-down on PCB (in all revisions, according to
[1]), so there is no need to do anything on the board (like "jumpering
to GND") unless the board was modified by user. Hence don't reference
PB2/BOOT1 in the README, as it was just confusing to the user.

[1] https://github.com/WeActTC/MiniSTM32F4x1/tree/master/HDK
This commit is contained in:
Marcin Niestroj 2022-06-30 22:30:18 +02:00 committed by Rachel Mant
parent 141fd17f63
commit 86a12ddaaa
1 changed files with 1 additions and 1 deletions
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src/platforms/blackpillv2/Readme.md
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@ -33,7 +33,7 @@ make PROBE_HOST=blackpillv2
* After build:
* 1) `apt install dfu-util`
* 2) Force the F4 into system bootloader mode by jumpering "BOOT0" to "3V3" and "PB2/BOOT1" to "GND" and reset (RESET button). System bootloader should appear.
* 2) Force the F4 into system bootloader mode by keeping BOOT0 button pressed while pressing and releasing NRST button. System bootloader should appear.
* 3) `dfu-util -a 0 --dfuse-address 0x08000000 -D blackmagic.bin`
To exit from dfu mode press a "key" and "reset", release reset. BMP firmware should appear