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Rasberry Pi

From Smithnet Wiki

Device

Windows IOT

Rasberry Pi OS

See /boot/firmware/config.txt.

Command line configuration program:

raspi-config

Upgrades

apt update && sudo apt upgrade -y

Web Server

apt install apache2
  • Configuration: /etc/apache2
  • Serve from: /var/www/html

Change swap

dphys-swapfile swapoff

Edit /etc/dphys-swapfile, eg 1 GB:

CONF_SWAPSIZE=1024 
dphys-swapfile setup
dphys-swapfile swapon

Composite Video

Note: CVBS is on sleve; Gnd is ring 3. It is enabled when no HDMI monitor is connected.

In /boot/firmware/config.txt:

enable_tvout=1
dtoverlay=vc4-kms-v3d,composite

Ensure hdmi_force_hotplug=1 is commented out or set to 0.

In /boot/firmware/cmdline.txt, either:

vc4.tv_norm=PAL
vc4.tv_norm=NTSC

To control overscan, see settings:

margin_left
margin_right

Temperature

Divide value by 1000 to get temp in C:

  • /sys/class/thermal/thermal_zone0/temp

CPU Core throttling above 80 C.