Problem using 2xLCD 20x4 in conjunction with 2x 7 Segments Display MAX 7219

[FlyDario]

HW involved:
With MF 10.2.2




Release using Arduino 2560 R3 with 2xLCD 20x4 + 2x 7 Segment Display Max7219 5 Digit there is a following bug:

Problem encountered:

1. Start MF, Run an .mcc (no matter XP12 or MSF2020, any aircraft) , the2x 20x4 LCDs work fine, the 2x 7 segments display only one is shown, the other remain blank.
2. If I upload config or re-load firmware without changing anything all the Displays (both LCD and 7 segments) work fine until the next MF application re-load where we go back in the status described in step 1, it lacks consistency at the MF re-load.
3. Made lot of testing which exclude power related issue (used external power for LCD and/or 7 segments ) -> same problem
4. Further test show that if 1 LCD is set as 20x4 and the other 20x2 or 20x3 everything works as expected and MF is consistent in loading MF, start mcc, stop mcc, re-load MF application, start stop in a forever cycle, both the 7 Segments show the display as it should be.
5. As soon as I configure the second LCD display from 20x2 or 20x3 config to 20x4 config, at the first run all the displays are working (I had to upload new config so it is the same situation in the step 2) but when I re-load the MF application we go back to step 1 with one 7 segment dropped

Steps To Reproduce
Steps to reproduce the behavior:
Easy to reproduce using the steps decribed above

Expected behavior
I Just expect that both LCD and 7 Segment will be operative wthout any display dropped by MF

Actual behavior
It is decribed in the problem description

Details

• MobiFlight Version: Latest 10.2.2
• FlightSim: [Any XP12 or MSF2020]
• AddOn: [Any Aircraft]

Additional context
Add any other context about the problem here.

[DocMoebiuz]

Thanks for sharing this. We will look into it and see if we can reproduce it too.

[elral]

@FlyDario One question, are both MAX7219 daisy chained or are they separate wired and configured?

[FlyDario]

I tried both config daisy, not daisy and also with 7 segment powered by external p. Supply. Same result, It Is not related to Power issue

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Attivo 5 ott 2024 alle 15:24, elral ***@***.***> ha scritto: @FlyDario One question, are both MAX7219 daisy chained or are they separate wired and configured? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you were mentioned.Message ID: ***@***.***>

[elral]

@FlyDario could you please upload both config files, from the board and the connector. I have some kind of idea but must test it.

Could take some time as I am on vacation and have sometimes limited internet access (and limited time ;) ).

[FlyDario]

Hi, this Is a problem I posted many months ago/1 Yeats ago, I had already used a work around ti solve it, I connected the 2 Seven segment display to another Arduino 2560 where are connected 2 lcd display 2*16 and the problem disappear. So for me Is hard to go back to previous configuration with 2 lcd display 4*20, almost impossible. Regards Dario

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Attivo 11 ott 2024 alle 18:13, elral ***@***.***> ha scritto: @FlyDario could you please upload both config files, from the board and the connector. I have some kind of idea but must test it. Could take some time as I am on vacation and have sometimes limited internet access (and limited time ;) ). — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you were mentioned.Message ID: ***@***.***>

[elral]

Hi Dario,
do you roughly remember which output devices were configured? More than 2 LCD's and 2 7Segments?

[FlyDario]

The output devices were under supported configs: 2x lcd 4x20 + 2x 7 segment max7219 Nothing else

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Attivo 12 ott 2024 alle 16:54, elral ***@***.***> ha scritto: Hi Dario, do you roughly remember which output devices were configured? More than 2 LCD's and 2 7Segments? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you were mentioned.Message ID: ***@***.***>