Revision as of 02:35, 26 August 2021

Raspberry Pi Video Receiver

One of the benefits of using Alpine Linux is that the SD/MMC is always mounted read-only. It will not wear out, and it's safe to power-off the device any time. Additionally the boot process has been given a professional look so that only the splash screen is displayed.

The boot time is about 60 seconds. It should speed up ~10 seconds after https://bugs.freedesktop.org/show_bug.cgi?id=64766 is fixed.

Quick demo:

Format SD/MMC with one primary partition, FAT32 file system
Extract http://nl.alpinelinux.org/alpine/v3.1/releases/armhf/alpine-rpi-3.1.1-armhf.rpi.tar.gz to the SD/MMC card
Extract http://dev.alpinelinux.org/~tteras/rpi-video-decoder.tar.gz on top of that

The overlay image contains the following changes:

fbsplash.ppm provide the splash screen with the Alpine logo
cmdline.txt has "blacklist=fbcon" appended to disable video console
a default overlay is provided to play BBC world news
root password is set to 'rpi'

To build the configuration overlay:

apk add openssh chrony omxplayer
vi /etc/network/interfaces        # eth0 configured for dhcp
vi /etc/conf.d/omxplayer          # to configure TV-channel URL
rc-update add networking
rc-update add chronyd
rc-update add sshd
rc-update add omxplayer
rc
rm /etc/ssh/ssh_host_*            # so you get new ssh key on boot
lbu commit

@@ Line 1: / Line 1: @@
 = Raspberry Pi Video Receiver =
-Main benefits of using Alpine Linux is that the SD/MMC is mounted read-only always. It will not wear out, and it's safe to power-off the device any time. Additionally the boot process has been made pro-looking so that only the splash screen is displayed.
+One of the benefits of using Alpine Linux is that the SD/MMC is always mounted read-only. It will not wear out, and it's safe to power-off the device any time. Additionally the boot process has been given a professional look so that only the splash screen is displayed.
-The boot time is about 60 seconds. It should speed up with ~10 seconds after https://bugs.freedesktop.org/show_bug.cgi?id=64766 is fixed.
+The boot time is about 60 seconds. It should speed up ~10 seconds after https://bugs.freedesktop.org/show_bug.cgi?id=64766 is fixed.
 Quick demo:
 * Format SD/MMC with one primary partition, FAT32 file system
-* Extract http://nl.alpinelinux.org/alpine/v3.1/releases/armhf/alpine-rpi-3.1.1-armhf.rpi.tar.gz to SD/MMC
+* Extract http://nl.alpinelinux.org/alpine/v3.1/releases/armhf/alpine-rpi-3.1.1-armhf.rpi.tar.gz to the SD/MMC card
 * Extract http://dev.alpinelinux.org/~tteras/rpi-video-decoder.tar.gz on top of that
 The overlay image contains the following changes:
-* fbsplash.ppm provide the splash screen with alpine logo
+* fbsplash.ppm provide the splash screen with the Alpine logo
 * cmdline.txt has "blacklist=fbcon" appended to disable video console
-* and a default overlay is provided to play BBC world news
+* a default overlay is provided to play BBC world news
 * root password is set to 'rpi'
-The configuration overlay basically is constructed as:
+To build the configuration overlay:
   <nowiki>
 apk add openssh chrony omxplayer