Prepare Bootable RockPi4 SD card image
======================================

[Assumes sdcard is /dev/mmcblk0 and losetup uses loop30)

sudo losetup -P -f --show ./ledge-iot-ledge-qemuarm64.wic
/dev/loop30

sudo dd if=./core-image-minimal-rockpi4b.wic of=/dev/mmcblk0 status=progress
sudo dd if=/dev/loop30p1 of=/dev/mmcblk0p2 status=progress
sudo dd if=/dev/loop30p2 of=/dev/mmcblk0p3 status=progress
sync



# Test Camera & rockchip ISP drivers are loaded

sudo cam -l

ledge-qemuarm64:~$ sudo cam -l
[0:00:27.149712635] [490]  INFO Camera camera_manager.cpp:293 libcamera v0.0.0+3395-61670bb3-dirty (2022-01-18T13:23:59+00:00)
[0:00:27.176473344] [491]  WARN CameraSensor camera_sensor.cpp:197 'imx219 4-0010': Recommended V4L2 control 0x009a0922 not supported
[0:00:27.176559677] [491]  WARN CameraSensor camera_sensor.cpp:249 'imx219 4-0010': The sensor kernel driver needs to be fixed
[0:00:27.176590010] [491]  WARN CameraSensor camera_sensor.cpp:251 'imx219 4-0010': See Documentation/sensor_driver_requirements.rst in the libcamera sources for more information
[0:00:27.178001094] [491]  WARN CameraSensor camera_sensor.cpp:396 'imx219 4-0010': Failed to retrieve the camera location
Available cameras:
1: 'imx219' (/base/i2c@ff3d0000/sensor@10)

# Capture some frames using cam utility & libcamera

mkdir ~/rkisplibcamera
sudo LIBCAMERA_LOG_LEVELS=0 cam --camera=1 --capture=10 --file=rkisplibcamera/# -s role=still