2020-10-18 13:11:34 -07:00
2020-10-18 13:01:13 -07:00
2020-10-18 13:01:13 -07:00
2020-10-18 13:01:13 -07:00
2020-10-18 13:01:13 -07:00
2020-10-18 13:11:34 -07:00

NixOS on Pinecube (Early work in progress)

Build an SD card image with ./build.sh. Prebuilt image here (updated 2020-10-18) Decompress and flash with:

$ zstd -d result/sd-image/nixos-sd-image-21.03pre-git-armv7l-linux.img.zst -o nixos-pinecube.img
$ dd if=./nixos-pinecube.img of=/dev/<sdcard> bs=1024

Should be accessible over UART2 pins (see pinout on wiki) or SSH.

  • Username: nixos
  • Password: nixos

Additional Notes

Recording from CSI camera:

$ media-ctl --set-v4l2 '"ov5640 1-003c":0[fmt:YUYV8_2X8/640x480]'
$ ffmpeg -s 640x480 -r 10 -i /dev/video0 -vcodec libx264 -preset ultrafast -tune zerolatency -f flv rtmp://192.168.1.200/live/pinecube

Activating LEDs:

https://elinux.org/CI20_GPIO_LED_Blink_Tutorial#Controlling_GPIOs_from_the_shell_.28Linux.27_sysfs_interface_for_GPIOs.29

$ echo 1 > /sys/class/leds/pine64\:ir\:led1/brightness

(Except they seem to be reversed. Setting 0 brightness turns them on, setting 1 turns them off) Change it to ACTIVE_HIGH in dtb?

GPIO:

https://linux-sunxi.org/GPIO

$ cat /sys/kernel/debug/pinctrl/1c20800.pinctrl/pinmux-pins

gives information about pin numbering and what pins already claimed for other things

Audio is not in currently in DTB at all. Maybe use sun7i-a20 as example. It has a "codec" block. See the S3 manual, grep for I2S/PCM.

SPI NOR

dmesg error: spi-nor spi0.0: unrecognized JEDEC id bytes: 0b 40 18 0b 40 18

WIFI

Not working

Ethernet

Working fine in linux. U-boot needs support

Description
Attempt at getting NixOS + accelerated H.264 encoding working for the pinecube
Readme 86 KiB
Languages
Nix 96.8%
Shell 3.2%