cd nuttx-stm32f4disc-bb/nuttx
cd tools  
./configure.sh stm32f4discovery/bb
cd ..

make CROSSDEV=arm-none-eabi-

vi configs/stm32f4discovery/bb/defconfig
cd tools
./configure.sh stm32f4discovery/bb
cd ..

openocd -f board/stm32f4discovery.cfg -c "init" -c "reset halt" -c "flash write_image erase nuttx.bin 0x08000000 bin" -c "reset run" -c "exit"

openocd -f board/stm32f4discovery.cfg -c "init"
arm-none-eabi-gdb -tui nuttx -ex 'target remote localhost:3333' -ex 'monitor reset halt' -ex 'load'  -ex 'continue'