Mega 2560 data not updating

[LPM]

Hello,

Sorry to hijack this conversation, but I am having a similar issue to what has been described and I am not sure what to do.
I know that everything is correct, myGenieEventHandler is called and doing what is asked, but whenever I ask the display to change a variable, be it a form, string etc. nothing happens. I have no idea what the issue is, so looking for some help.
Are there other sources of error? My code is quite large, but I am only using 8 different forms. Could the problem be with my arduino?

My hardware is an Arduino Mega2560 and a 4D systems uLCD-24PT.

Kind Regards,
Luca

[James_4DSystems]

Hello Luca

Sorry to hear of your problems. I have moved your post to a new topic of its own, rather than on the old one you posted on.

So you have a Mega2560, and a uLCD-24PT ? (is that a gen4-uLCD-24PT ?)
How have you got it connected together?
Are you using a 4D Arduino Adaptor?
Are you using the Mega2560's Serial0 port, or are you using Serial1/2/3 ?
Please can you attach a few photos of your setup, showing the wiring?

You have the same baud rate in your Arduino code, as well as in your Workshop4 ViSi-Genie application?
Are you using the genieArduino library, or the genieArduinoDEV library?

Are you able to share your code? If you wish it to remain private, then please submit a ticket to us instead of using the forum, http://helpdesk.4dsystems.com.au

Regards

[LPM]

Hi James,

Yes, it is a gen4-uLCD-24PT, but I am not using a 4D arduino adaptor. I am using Serial 0.
I can confirm that I have the same baud rate in the arduino code and Workshop 4 visigenie, both 9600.
When I said I know that everything is correct, I tested a condensed version of the code and all the commands work as they should, so it has really perplexed me for a couple of weeks now. At one stage the code worked temperamentally, it would get to a certain stage and then just give up.
All very confusing.
I have attached the wiring below and will send a ticket to you, I apologise in advance for the code, I am not particularly proficient in arduino so it's a bit of a mess so I will update all my comments and send it tomorrow.

Thank you so much,
Luca

[LPM]

Here are the wiring images:

[James_4DSystems]

Hi Luca

Nothing is jumping out at me from your photos - so ill wait for you to raise the ticket and ill take a look at your program.

You don't have RESET inverted do you? If you are not using the Arduino Adaptor then the reset needs to be Active Low - compared to with the Adaptor it needs to be Active High.
Also checking you have Reset set to pin D8 instead of the usual D4?
And you are using a delay after the reset to allow the display to start up, before you fire Arduino commands at it?

Regards
James

[LPM]

Hi James,

I have done all of that, even with a bit of overkill for the reset time.


Luca

[James_4DSystems]

Hi Luca

I received your ino file on the ticket system. Thanks.

I can immediately spot a problem, you are using the Serial print statements to print to your console/terminal, but also using it to communicate to the display. You cannot do this.
Serial is either for the display, or it is for another purpose - such as printing your debug messages.
I suggest you change to Serial1 for genie, and move your wires over to the Serial1 pins, leaving Serial (Serial0) for your debug statements to the console/terminal.

Because you have Serial.print statements all through your code, these will be 100% conflicting with the display, stopping it from working.

Please change the display to Serial1 and your wiring, and let me know how you get on.

Please also have a read of this Sticky post - point 1c is exactly what I am talking about.
https://forum.4dsystems.com.au/node/40596

Regards
James

[LPM]

Hi James,

That has fixed everything, I am so sorry that it was such a simple problem, but I really appreciate the help!!

Kind regards,

Luca

[James_4DSystems]

Hi Luca

I am glad the problem is solved, and no trouble at all.

Regards