boards/dfu-util: use FLASHFILE for boards using dfu-util

[cladmi]

Contribution description

Update to use FLASHFILE as file to be flashed on the board.

Testing procedure

Flash on a board using dfu-util

DFU_BOARDS=$(git grep -l -e tools/dfu.inc.mk -e dfu-util -e common/stm32f103c8 'boards/*' ':!boards/common'  | cut -f 2 -d/ | sort -u)
echo ${DFU_BOARDS}
blackpill bluepill nz32-sc151 pyboard spark-core

Testing without a board

The output of the FFLAGS has the same file as in master.
It is a bit different as I removed the " around the file name as we do not do it for any other boards.

for board in ${DFU_BOARDS}; do echo ${board}; PROGRAMMER=dfu-util BOARD=${board} make --no-print-directory -C examples/hello-world/ FLASHER=true flash-only; done

for board in ${DFU_BOARDS}; do echo ${board}; PROGRAMMER=dfu-util BOARD=${board} make --no-print-directory -C examples/hello-world/ FLASHER=true flash-only; done
blackpill
true -d 1eaf:0003 -a 2 -D /home/harter/work/git/RIOT/examples/hello-world/bin/blackpill/hello-world.bin
bluepill
true -d 1eaf:0003 -a 2 -D /home/harter/work/git/RIOT/examples/hello-world/bin/bluepill/hello-world.bin
nz32-sc151
true -d 0483:df11 -a 0 -s 0x08000000:leave -D /home/harter/work/git/RIOT/examples/hello-world/bin/nz32-sc151/hello-world.bin
pyboard
true -D /home/harter/work/git/RIOT/examples/hello-world/bin/pyboard/hello-world.bin --reset --alt 0 -s 0x8000000
spark-core
true -d 1d50:607f -a 0 -s 0x08005000:leave -D /home/harter/work/git/RIOT/examples/hello-world/bin/spark-core/hello-world.bin

Only diff is the " that were removed

wdiff  output_master output_pr 
blackpill
true -d 1eaf:0003 -a 2 -D [-"/home/harter/work/git/RIOT/examples/hello-world/bin/blackpill/hello-world.bin"-] {+/home/harter/work/git/RIOT/examples/hello-world/bin/blackpill/hello-world.bin+}
bluepill
true -d 1eaf:0003 -a 2 -D [-"/home/harter/work/git/RIOT/examples/hello-world/bin/bluepill/hello-world.bin"-] {+/home/harter/work/git/RIOT/examples/hello-world/bin/bluepill/hello-world.bin+}
nz32-sc151
true -d 0483:df11 -a 0 -s 0x08000000:leave -D [-"/home/harter/work/git/RIOT/examples/hello-world/bin/nz32-sc151/hello-world.bin"-] {+/home/harter/work/git/RIOT/examples/hello-world/bin/nz32-sc151/hello-world.bin+}
pyboard
true -D /home/harter/work/git/RIOT/examples/hello-world/bin/pyboard/hello-world.bin --reset --alt 0 -s 0x8000000
spark-core
true -d 1d50:607f -a 0 -s 0x08005000:leave -D [-"/home/harter/work/git/RIOT/examples/hello-world/bin/spark-core/hello-world.bin"-] {+/home/harter/work/git/RIOT/examples/hello-world/bin/spark-core/hello-world.bin+}

The value can be changed from environment variable:

for board in ${DFU_BOARDS}; do echo ${board}; PROGRAMMER=dfu-util FLASHFILE=beer BOARD=${board} make --no-print-directory -C examples/hello-world/ FLASHER=true flash-only; done

for board in ${DFU_BOARDS}; do echo ${board}; PROGRAMMER=dfu-util FLASHFILE=beer BOARD=${board} make --no-print-directory -C examples/hello-world/ FLASHER=true flash-only; done
blackpill
true -d 1eaf:0003 -a 2 -D beer
bluepill
true -d 1eaf:0003 -a 2 -D beer
nz32-sc151
true -d 0483:df11 -a 0 -s 0x08000000:leave -D beer
pyboard
true -D beer --reset --alt 0 -s 0x8000000
spark-core
true -d 1d50:607f -a 0 -s 0x08005000:leave -D beer

Issues/PRs references

Part of #8838

[MrKevinWeiss]

ACK. Tested only on the bluepill with dfu utils. I was able to flash tests/shell with
BOARD=bluepill FLASHFILE=/home/kevinweiss/WorkingDirectory/RIOT/tests/shell/bin/bluepill/tests_shell.bin PROGRAMMER=dfu-util make -C tests/leds/ flash-only

[cladmi]

Thank you for the review and doing actual board testing :)