LPlproven·May 6, 2025
Like this?
https://github.com/bztsrc/raspi3-tutorial/
Or this, which builds on it?
https://www.rpi4os.com/
In Oberon Pibztsrc
raspi3-tutorial
C2019–2025
bztsrc / raspi3-tutorial
raspi3-tutorial
Bare metal Raspberry Pi 3 tutorials
6Distinct people
6Mentions
0Explicit recommenders
3.1KGitHub stars
What to know before exploring
What it is
Bare metal Raspberry Pi 3 tutorials
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:03:16 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year6 dated mentions
Observed mentions: 2019-04-24 18:26:29 UTC to 2025-05-06 08:41:02 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 2 | 1 | 1 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 2 | 1 | 1 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
6 sources>hw-rpi3-5 Hello World bypassing clib altogether, and talking direcly to the hardware.
>Apparently this is a no-no, even if it is theoretically more efficient. The bare-metal and OS dev folk are pretty much limited to using this method
mov r7, #4 /\* raw system call for write */
swi #0 /* print without using clib \*/
This seems to be just a call into the linux kernel, not bare metal, essentially what the clib does itself. You have to do this to do functions the kernel supports but haven't been ported to clib yet.
I haven't really looked deep into it but a google search came up with this for bare metal text printing https://github.com/bztsrc/raspi3-tutorial/tree/master/0A_pcs...
In Assembler on Raspberry PiThank you.
UART using polling[0] instead of interrupts, i.e. sending a character and waiting in a busy loop until it gets sent, isn't it quite wasteful?
[0] https://github.com/bztsrc/raspi3-tutorial/blob/master/03_uar...
In Bare Metal Programming on Raspberry Pi 3Bare Metal Programming on Raspberry Pi 3
142 points · Open discussionBare Metal Programming on Raspberry Pi 3
5 points · Open discussionIf you want to see C at it's lowest level and understand where it shines, I'd recommend the embedded and bare-metal realms. This Raspberry Pi tutorial set, for instance:
https://github.com/bztsrc/raspi3-tutorial
It's also fairly popular for emulators, since it's types are orthogonal and it's low level design is well suited to designing a pseudo-machine. It's definitely being displaced in that realm by C++/Rust/Nim/etc though.
In An Introduction to C and GUI Programming