WLOG - blog something different

tags: ai arduino bass games godot i2c linux plan9 random rv web werc zig
Blink from boot1 with U-Boot
link | rv | Sun Dec 26 18:02:49 CET 2025 No.43

A continuation of a long-awaited adventure!

Not only is it booted through an SD card, but also the same hacky, incoherent mess of two functions in memory that toggle a register has been recreated in Zig.

A blink program booted through an SD card

The steps and code so far are here.


Blink from boot0 over FEL
link | rv | Sun Mar 10 15:35:26 CET 2024 No.33

These are definitely words in the title, but what do they mean? A long-awaited adventure!

By now, the probably obsolete and forgotten RiscV version of MangoPi has been on my TODO list for a while. Fashionable late, but sometimes you have to let things take their time.

What we have here is bare bone blinking of an LED on the MangoPi SBC with Allwinner D1 RiscV chip.

Trace on the analyzer goes up and down

Quite a few steps to get to this point, from figuring out the boot procedure, architecture, pin-out, tool chains, itdā€¦

The condensed version of the steps and code is here.

And there might be some notes as well.