This test case is to be carried out on a Raspberry Pi Compute Module 3+ Lite.
Follow the installation steps at
IoT installation media
-
After logging in, run
systemctl status, and look at the
"State:" reported at the top of the output
-
State should be reported as "running". In particular, it should
not read "degraded".
-
Run
sudo flash-kernel
-
Exit code is clean (0) and no error messages are reported
-
Run
sudo reboot
-
System reboots successfully to a login prompt
-
Run
sudo shutdown -h now
-
System shuts down in a reasonable time (less than a minute)
-
Check output of
free -h
-
Reported "Mem" under "total" is consistent with a
Raspberry Pi Compute Module 3+ Lite. It should be in the region of 800-1000MB.
-
Perform a large (300-600MB) file copy to USB storage
- Generate a large (500MB) file:
dd if=/dev/urandom of=rubbish
bs=1M count=500
- Insert a USB stick (appropriately sized) into a spare USB port
- Make a mount directory:
sudo mkdir /mnt/stick
- Mount the stick:
sudo mount /dev/sda1 /mnt/stick
(modify mount-point as necessary; check sudo dmesg
output if unsure)
- Copy the file:
sudo cp rubbish /mnt/stick/
- Unmount the stick:
sudo umount /mnt/stick
- Remove the stick from the USB port
- Re-insert the stick into the USB port
- Re-mount the stick:
sudo mount /dev/sda1 /mnt/stick
(again, adjust mount-point as necessary)
- Compare the copied file to that on the stick:
cmp rubbish
/mnt/stick/rubbish
-
cmp returns 0 and outputs nothing, indicating the files are
identical
-
Connect a USB keyboard to one of the USB2 ports
-
Verify that keys typed on the keyboard appear on the console
-
With an HDMI monitor that supports audio, and an available MP3 file:
- Install ffmpeg and amixer with
sudo apt install ffmpeg
alsa-utils
- Find the correct card name for the HDMI port:
cat /proc/asound/cards and note the name in [brackets]
for the HDMI port
- Attempt to play your MP3 file with:
ffmpeg -i
music.mp3 -f alsa default:CARD=name
substituting name for the card name found during the
previous step, and music.mp3 for your choice of MP3 file,
e.g. ffmpeg "Jeff Wayne - War of the Worlds.mp3"
-f alsa default:CARD=vc4hdmi0
- Use Ctrl+C or q to end playback early, if you
wish
- If you cannot hear anything, first check that the mixer's volume is
not set too low; run alsamixer, and adjust the volume
(J for down, K for up) before exiting
(Esc) and retrying playback
- Audio can be heard through the device
-
Check the CPU clock speed using
vcgencmd
- Stress the CPU by doing
yes > /dev/null &
- Run
sudo vcgencmd measure_clock arm after about 5 sec
- Kill the stress process
- The output should be around 1.2GHz (obtained from online specs)
-
Run
sudo vcmailbox 0x00010004 8 8 0 0
-
The output should have the board serial number as the 6th integer.
-
Test
dtmerge
- Copy the live device tree using
dtc -I fs -O dtb -o test.dtb /proc/device-tree
- Use dtmerge to overclock the SD card.
dtmerge test.dtb merged.dtb - sd_overclock=62
- Check the contents of the new DTB.
dtdiff test.dtb merged.dtb
- Delete both test.dtb and merged.dtb
-
merged.dtb should have
brcm,overclock-50 = 0x3e under the SD card device.
-
Test
dtoverlay
- Run
sudo dtoverlay pwm
- Run
sudo dtoverlay -l
- The PWM Overlay should show up as loaded. Remove it by running
sudo dtoverlay -r pwm
-
Test
dtparam
- Run
sudo dtparam sd_overclock=62
- Run
sudo dtparam -l
- The sd_overclock parameter should show up as set. Remove it by running
sudo dtparam -r 0
-
Run
sudo pinctrl
- THe output should have status of the GPIO pins.
-
Run
sudo raspinfo
- The output should have an information dump about the Pi.
If all actions produce the expected results listed,
please submit a 'passed' result.
If any action fails, or produces an unexpected result,
please submit a 'failed' result and file a bug. Please be sure to include
the bug number when you submit your
result.
