Add LL3G Support (#32)

Co-authored-by: Matt Morley <[email protected]>

.github/workflows/main.yml

@@ -21,6 +21,9 @@ jobs:
           - name: limelight3
             script: ./install_limelight3.sh
             base_image: https://downloads.raspberrypi.com/raspios_lite_arm64/images/raspios_lite_arm64-2024-07-04/2024-07-04-raspios-bookworm-arm64-lite.img.xz
+          - name: limelight3g
+            script: ./install_limelight3g.sh
+            base_image: https://downloads.raspberrypi.com/raspios_lite_arm64/images/raspios_lite_arm64-2024-07-04/2024-07-04-raspios-bookworm-arm64-lite.img.xz
           - name: raspi
             script: ./install_pi.sh
             base_image: https://downloads.raspberrypi.com/raspios_lite_arm64/images/raspios_lite_arm64-2024-07-04/2024-07-04-raspios-bookworm-arm64-lite.img.xz

install_limelight3g.sh

@@ -0,0 +1,14 @@
+#!/bin/bash -v
+
+# Verbose and exit on errors
+set -ex
+
+# Run the pi install script
+chmod +x ./install_pi.sh
+./install_pi.sh
+
+# Install our new config.txt with OV9281 overlay
+install -m 644 limelight3g/config.txt /boot/
+
+# Add the one extra file for the LL3
+wget https://datasheets.raspberrypi.org/cmio/dt-blob-cam1.bin -O /boot/dt-blob.bin

limelight3g/config.txt

@@ -0,0 +1,45 @@
+# Automatically load overlays for detected DSI displays/cameras
+display_auto_detect=1
+camera_auto_detect=1
+
+# Automatically load initramfs files, if found
+auto_initramfs=1
+
+# Enable DRM VC4 V3D driver
+dtoverlay=vc4-kms-v3d
+max_framebuffers=2
+
+# Run in 64-bit mode
+arm_64bit=1
+
+# Disable compensation for displays with overscan
+disable_overscan=1
+
+[cm4]
+# Enable host mode on the 2711 built-in XHCI USB controller.
+# This line should be removed if the legacy DWC2 controller is required
+# (e.g. for USB device mode) or if USB support is not required.
+otg_mode=1
+
+[pi4]
+# Run as fast as firmware / board allows
+arm_boost=1
+
+[all]
+##############################################################
+### PHOTONVISION CAM CONFIG
+### Comment/Uncomment to change which camera is supported
+### Picam V1, V2 or HQ: uncomment (remove leading # ) from camera_auto_detect=1,
+### and comment out all following lines
+### IMX290/327/OV9281/Any other cameras that require additional overlays:
+### Comment out (add a # ) to camera_auto_detect=1, and uncomment the line for
+### the sensor you're trying to user
+
+# camera_auto_detect=1
+
+# dtoverlay=imx290,clock-frequency=74250000
+# dtoverlay=imx290,clock-frequency=37125000
+# dtoverlay=imx378
+dtoverlay=ov9281
+
+##############################################################