EVE2-29A-BLM-TPN Configuration

FTDI/Bridgetek EVE2 Series by Matrix Orbital

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arupratanb
LCD?
Posts: 5
Joined: Mon Aug 06, 2018 2:02 am

EVE2-29A-BLM-TPN Configuration

Post by arupratanb » Mon Aug 06, 2018 2:25 am

Dear Sir,
We have procured two modules of 2.9" size carrying part no EVE2-29A-BLM-TPN for making prototype of an instrument under development almost one & 1/2 month back from MOUSER . However, so far we are not able to make it work. Only Backlight is getting on and we are able to change the intensity as well through duty control of PWM . We have checked all Registers and Memory locations for correct writing of data through debugger and found everything to be in order (as suggested in the Programming Guide). We have used PSoC3 of Cypress Semiconductor as host and using SPI interface for the Display. Please suggest us a solution at the earliest as we need to go for qty production (200 units) immediately after the prototyping is over.
Regards.
Arup Ratan Bhattacharya
Dy. General Manager(Dev.)

Daniel Divino
Matrix Orbital
Matrix Orbital
Posts: 134
Joined: Thu Sep 24, 2015 9:38 am

Re: EVE2-29A-BLM-TPN Configuration

Post by Daniel Divino » Tue Aug 07, 2018 4:02 pm

Hi Arup,

Welcome to the forums!

I understand you are having difficulties communicating with your EVE-29A-BLM-TPN display.

First, I suggest you take a look at our EVE application notes which are pre-made projects that demonstrate how to setup and configure communication with the display.

You can find our EVE application notes here :
https://www.matrixorbital.com/app/app-eve-series

Second, would you be able to post your code? It would be easier to determine what is going wrong if we had an example of what you are currently doing.

Thanks,
Daniel
Daniel Divino
Technical Support
Matrix Orbital

arupratanb
LCD?
Posts: 5
Joined: Mon Aug 06, 2018 2:02 am

Re: EVE2-29A-BLM-TPN Configuration

Post by arupratanb » Tue Aug 07, 2018 11:45 pm

Hi Daniel,
Thanks for the reply.
Please find attached the code we are using.
Requiest you to kindly extend your help at the earliest.
Regards.
Attachments
Display_Code.txt
Code being used for TFT
(9.89 KiB) Downloaded 4 times

arupratanb
LCD?
Posts: 5
Joined: Mon Aug 06, 2018 2:02 am

Re: EVE2-29A-BLM-TPN Configuration

Post by arupratanb » Thu Aug 09, 2018 12:23 pm

Hi Daniel,
Kindly inform me about your findings at the earliest. On further checking I find that the PCLK is not getting generated and which probably indicates that either there is an error in initialization part or device got damaged. Can the device get damaged if any or some of the registers are programmed with wrong TFT data ? How both the modules behaving likewise ? Are both damaged ? What is the reliability of the product? Please reply quickly to all these quires . In fact I am facing such a problem for the first time in my 25 years of Design & Development carrier. Please respond fast , otherwise I shall have no option but to switch over to some other display as I can't afford to loose my Business due to this.

Regards

Arup

Daniel Divino
Matrix Orbital
Matrix Orbital
Posts: 134
Joined: Thu Sep 24, 2015 9:38 am

Re: EVE2-29A-BLM-TPN Configuration

Post by Daniel Divino » Thu Aug 09, 2018 5:19 pm

Hi Arup,

Upon first glance, it looks like your initial setup is correct but can you tell me why you are writing 4 to REG_DLSWAP instead of the valid 2, or 1? Sending a 4 to REG_DLSWAP will not have the desired effect, and in the programmer's manual, it specifies that only 1 and 2 should be written to that register.

We haven't had any reports of customers damaging the FT81X processor by writing to the wrong register(s). I haven't stumbled upon any similar reports online either. From my experience, our EVE2 display series is fairly robust, and all of the issues that I've experienced when using the product occurred due to improper initialization/code instead of faulty hardware.

If you used the same code to run both displays, it is possible that you are missing something crucial in your setup.

Please let me know if changing the value that you write to REG_DLSWAP makes a difference.

Cheers,
Daniel
Daniel Divino
Technical Support
Matrix Orbital

arupratanb
LCD?
Posts: 5
Joined: Mon Aug 06, 2018 2:02 am

Re: EVE2-29A-BLM-TPN Configuration

Post by arupratanb » Thu Aug 09, 2018 10:28 pm

Hi Daniel,
Thanks for the reply! I have tried out with 1 as well as 2 but getting the same result. Can you send me a few lines of codes which is responsible for setting up desired Clock frequency and activating PLCK. I feel only due to some configuration problem PCLK is not getting generated.
Please suggest.

Regards.

Arup

Daniel Divino
Matrix Orbital
Matrix Orbital
Posts: 134
Joined: Thu Sep 24, 2015 9:38 am

Re: EVE2-29A-BLM-TPN Configuration

Post by Daniel Divino » Mon Aug 13, 2018 9:52 am

Hi Arup,

You can take a look at our EVE2 appnotes for example code.

All of our EVE2 appnotes contain information regarding how to setup the display. Although you are running on a different platform, the order that commands/data is sent will still apply.

You can find our appnotes available for download here : https://www.matrixorbital.com/app/app-eve-series

When waking up the display, are you able to successfully read the EVE's chip ID?

Cheers,
Daniel
Daniel Divino
Technical Support
Matrix Orbital

arupratanb
LCD?
Posts: 5
Joined: Mon Aug 06, 2018 2:02 am

Re: EVE2-29A-BLM-TPN Configuration

Post by arupratanb » Mon Aug 13, 2018 12:17 pm

Hi Daniel,
Yes ! I am able to read Chip ID and locations 0xc00000,0xc00001,0xc00002 etc for correct data. And even I am able to read correctly all the register and Memory locations (RAM_DL & RAM_CMD)data whatever I write to.
It really is a surprise to me why Display is not getting generated. Suggest if there is any clue to this problem.
Regards.

Arup

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