STM32F1: Support M997 - Reset and begin flash #15209
Merged
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sorry, had some rebase problems :(, but got it fixed now and learned sth 👍
rebased to get travis build success.
Description
Adds M997 gcode command to the stm32f1 platform to support a fw reset and triggering a flash from sd card by bootloader.
Tested and works on my SKR mini E3.
Benefits
Remotly Firmware flashing by USB like LPC Style:
Related
#13281
#11128
OctoPrint/OctoPrint-FirmwareUpdater#103
bigtreetech/BIGTREETECH-SKR-mini-E3#14