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diff --git a/docs/Bootloaders.md b/docs/Bootloaders.md index 03ef4969..884cfbfd 100644 --- a/docs/Bootloaders.md +++ b/docs/Bootloaders.md @@ -385,6 +385,28 @@ not available, so it may be done by setting pin PA2 low if you flashed the SKR Mini E3's "PIN" document. There is a ground pin next to PA2 which you can use to pull PA2 low. +### STM32F103/STM32F072 with MSC bootloader + +The [MSC bootloader](https://github.com/Telekatz/MSC-stm32f103-bootloader) is a driverless bootloader capable of flashing over USB. + +It is possible to flash the bootloader via 3.3v serial using stm32flash as noted +in the stm32duino section above, substituting the file name for the desired +MSC bootloader binary (ie: MSCboot-Bluepill.bin for the blue pill). + +For STM32F072 boards it is also possible to flash the bootloader over USB (via DFU) +with something like: + +``` + dfu-util -d 0483:df11 -a 0 -R -D MSCboot-STM32F072.bin -s0x08000000:leave +``` + +This bootloader uses 8KiB or 16KiB of flash space, see description of the bootloader +(the application must be compiled with with the corresponding starting address). + +The bootloader can be activated by pressing the reset button of the board twice. +As soon as the bootloader is activated, the board appears as a USB flash drive +onto which the klipper.bin file can be copied. + ## STM32F4 micro-controllers (SKR Pro 1.1) STM32F4 microcontrollers come equipped with a built-in system bootloader |