BATC Forum

For a while now I have not been able to get this to work.

When I select (for instance) SR333, FEC 1/2 H264 DVB-S and TC animation, the transmitted picture is the Portsdown main menu screen!

I've tried Lime mini and get the same.

Also tried different combinations of SR and FEC.

Any ideas as to what I'm doing wrong?

73
Dave G3ZGZ

Hi Dave

EDIT - Please ignore this post and read the one below!!

I think that you might have found a bug introduced by a recent Linux operating system update. The Raspberry Pi foundation introduced Buster on the RPi 4 in a bit of a hurry and then back-ported the code to the RPi 3 updates. And only then did they start to find that these sort of issues had crept in.

I have reproduced the problem and will look for a fix .

Dave

Dave

I posted in haste, having forgotten a software change that I did a while back.

Please could you confirm that the signal being transmitted is the desktop, by receiving it on a receiver?

I changed the software about 6 months ago, so that with the 3.5 inch screen (please confirm that is what you have) the desktop remained displayed (with a Red TX button), but the animation was actually transmitted. The reason for this is that there was a timing conflict between the application drawing to the screen and the transmitter grabbing the image from the screen. The end result was a smooth tcanim transmission, but no local display. This issue does not affect the 7 inch screen, so tcanim is displayed there.

If you are sure that a desktop is being transmitted, please could you plug a composite video monitor (not HDMI) into the RPi and tell me what you see during TX?

And what software version are you using?

Thanks

Dave

Hello Dave,
Software is latest version.
I noticed that the TC animation did not work a few updates ago (sorry can't remember how many or when as I didn't need to use the animation since Eshail came active!) It could be 6 months since I tried to use it!

I did notice a while ago that the animation transmitted was faster and smoother than earlier software versions, but haven't a clue how long ago that was.

I'm using the 4inch screen but the only difference to a 3.5 is that the touch pad is inverted and that still works OK.

The signal actually transmitted is the desktop of the PI when animation is selected

The video output of the PI when in TX and sending to Portsdown and Lime mini shows the desktop in Comp video, the comp video is transmitted.
Vid out shows the BATC Portsdown screen for a sec or so, then testcard F when testcard selected. The testcard is transmitted.
Vid out shows the desktop when animation selected and the desktop is transmitted.
Vid out shows Portsdown screen when PI cam selected (I DONT HAVE A PI CAM CONNECTED) and TX fails.
Vid out shows the BATC screen when PI screen selected and this is transmitted.


Hope that answered your questions.

Cheers

Dave.

Hi Dave

Please could you take a look at your file?

There should be one line like this: If it is corrupt, please correct it. If not, please let me know what display type you have selected and I can think again.

73

Dave

Dave, the line is there.
Same line in a .BAK file

Thinking cap on again!

Display is set as waveshare 4 inch.
Set display to waveshare 3.5 A and the desktop is still transmitted.

Do you want me to PM you?

Dave.

Hi Dave

Please could you try pasting this line into the Linux Command Line: and let me know what happens.

Thanks

Dave, G8GKQ

pi@raspberrypi:~ $ /home/pi/rpidatv/bin/tcanim1v16 "/home/pi/rpidatv/video/*10" "720" "576" "48" "72" "CQ" "CQ CQ CQ DE BATC TEST"


tcanim1v16a: Test Card Animator
Using image files in this order:
/home/pi/rpidatv/video/imz-10.jpg
/home/pi/rpidatv/video/imz-15.jpg
/home/pi/rpidatv/video/imz-16.jpg

Thanks Mike - and the animation appeared on the screen?

This is for Dave to try to work out why he can't transmit tcanim.

Dave

Dave,
Same result as G0MJW in Linux

TC animation appears on the screen.

Next step?

Dave.