RPI 4B HDMI Component on Flowcode V8

For Flowcode users to discuss projects, flowcharts, and any other issues related to Flowcode 8.

Moderator: Benj

Post Reply
David_Challenge
Posts: 9
Joined: Tue Oct 06, 2020 4:49 pm
Contact:

RPI 4B HDMI Component on Flowcode V8

Post by David_Challenge »

I am trying to use the HDMI component macro on Raspberry Pi 4B to get a display which I can change through a Flowcode generated program.

Looking at the help documentation there is a display component called "Raspberry Pi HDMI" which says "Graphical display component designed to work with the HDMI screen output of the Raspberry Pi"

I do not seem to be able to get this component to display on my Pi 4B HDMI (monitor) screen.

Attached is my simple V8 program which I know is working because I get the LED flash I am expecting.

The odd thing is when I shut down the Pi I can see, for a second, what looks like my display when the desktop clears.

Any help would be much appreciated please.
Attachments
RPi_Test_3.fcfx
(11.27 KiB) Downloaded 116 times

User avatar
LeighM
Matrix Staff
Posts: 2178
Joined: Tue Jan 17, 2012 10:07 am
Has thanked: 481 times
Been thanked: 699 times
Contact:

Re: RPI 4B HDMI Component on Flowcode V8

Post by LeighM »

It's working for me (on HDMI0)
What operating system and version are you using? (on the Raspberry Pi)

David_Challenge
Posts: 9
Joined: Tue Oct 06, 2020 4:49 pm
Contact:

Re: RPI 4B HDMI Component on Flowcode V8

Post by David_Challenge »

I am using the Raspberry Pi OS (32-Bit), when I try 'uname - a' I get 'raspberrypi 5.10.17-v71l+ #1403 SMP Mon Feb 22 11:33:35 GMT 2021 arm v71 GNU/Linux'.

By HDMI0 do you mena HDMI cable plugged into HDMI0, which I have.

User avatar
LeighM
Matrix Staff
Posts: 2178
Joined: Tue Jan 17, 2012 10:07 am
Has thanked: 481 times
Been thanked: 699 times
Contact:

Re: RPI 4B HDMI Component on Flowcode V8

Post by LeighM »

Thanks.
I have now confirmed it is not working on the latest Pi OS,
(was OK on my Raspbian Buster)
looks like the goalposts have moved :(
I will need to investigate further

User avatar
LeighM
Matrix Staff
Posts: 2178
Joined: Tue Jan 17, 2012 10:07 am
Has thanked: 481 times
Been thanked: 699 times
Contact:

Re: RPI 4B HDMI Component on Flowcode V8

Post by LeighM »

You will need to change the Raspberry Pi Configuration to "Boot to CLI"
(not "Boot to Desktop")
This is preferable anyway, because the desktop needs to be disabled to use the Flowcode display component.
(It uses the whole screen via the frame buffer)

David_Challenge
Posts: 9
Joined: Tue Oct 06, 2020 4:49 pm
Contact:

Re: RPI 4B HDMI Component on Flowcode V8

Post by David_Challenge »

I understand and that works now

Post Reply