I am a student and I am interested in working bare metal. I have worked with RPi 2 and world was a happy place (thanks to David Welch's collection of bare metal code samples). Recently I bought my new RPi Zero. Unfortunately, I am even unable to flash the ACK LED. There has been discussion on this forum regarding RPi Zero GPIO layout to be similar to RPi 2 or RPi B+. For flashing ACK LED, I have tried both GPIO 16 and 47 from RPi 2 and RPi B+ layouts, respectively. But no success. I don't know if there might be other differences in RPi 2 and RPi Zero.
I also looked for available bare metal code examples for RPi Zero but no luck. I know there has been OS ports to RPi Zero like Ultibo and Linux, but frankly PASCAL is not my cup of tea and Linux is too gigantic to see the clear picture for RPi Zero. I was wondering if anybody else tried it. If yes, please share the code. Any help would be appreciated. Thanks in advance.
PS: Sorry, I am a bit short on time so I didn't read all the search results for this topic (but I tried). If this topic has been discussed before, please provide a link.