In this video I explain how to use a LED Matrix panel with NuttX. I created a driver on NuttX that handles the LEDs matrices like a LCD, this way you can connect together many modules/panels to create big displays. Also I wrote a tutorial explaining how I implemented this driver, it could be a good reading for people willing to know how it works: https://acassis.wordpress.com/2017/11/09/creating-a-max7219-led-matrix-driver/ And these are the commands executed during this video: $ cd nuttxspace/nuttx $ make distclean $ clear $ ls configs/stm32f4discovery/src/stm32_max7219.c $ ./tools/configure.sh stm32f4discovery/nsh $ make menuconfig $ vi ../apps/examples/nxhello/nxhello_bkgd.c $ make $ sudo openocd -f interface/stlink-v2.cfg -f target/stm32f4x.cfg -c init -c "reset halt" -c "flash write_image erase nuttx.bin 0x08000000" ... https://www.youtube.com/watch?v=xfs9rEybe20