Sorry for my late reply. I just changed 4 computers before I can get the device detected. Here I have a new question. I've succeeded in Helloworld and is continuing other builds in dev.px4.io. Just run into trouble when doing this:
I type make eagle_default in my terminal and when I did this in user mode, it output error as this:
error: must run as root
I've already tried sudo usermod -a -G dialout $user to change my permission but got the same error, And when I use sudo su to run as root, I execute this command and nothing happened, it just got stuck there: nothing happened, and the terminal seems running something that can't be seen.
What should I do to successfully make the file and upload it to snapdragon?