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:
- https://linux-sunxi.org/CSI#CSI_on_mainline_Linux_with_v4l2
- https://www.kernel.org/doc/html/latest/userspace-api/media/v4l/subdev-formats.html
$ 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:
$ 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:
$ 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
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