There is a problem with NIS updating to newer klipper
make flash FLASH_DEVICE=0483:df11 Compiling out/src/pwmcmds.o Compiling out/src/lcd_st7920.o Compiling out/src/lcd_hd44780.o Compiling out/src/i2c_software.o In file included from src/i2c_software.c:10:0: out/board/internal.h:8:23: fatal error: stm32f0xx.h: No such file or directory compilation terminated. make: *** [Makefile:65: out/src/i2c_software.o] Error 1
After trying a lot, I was able to get it running by following the steps from FYSETC GIT and stopped right after the "make KCONFIG_CONFIG=config.nis -j4" step.
Then, I used the following command to write the firmware into the board (since make flash was giving me the same error as OP):
There is a problem with NIS updating to newer klipper
make flash FLASH_DEVICE=0483:df11 Compiling out/src/pwmcmds.o Compiling out/src/lcd_st7920.o Compiling out/src/lcd_hd44780.o Compiling out/src/i2c_software.o In file included from src/i2c_software.c:10:0: out/board/internal.h:8:23: fatal error: stm32f0xx.h: No such file or directory compilation terminated. make: *** [Makefile:65: out/src/i2c_software.o] Error 1
the user: snarfwasahero
Got the fix to update the NIS from raspberry: