Search found 247 matches

by Daniel Divino
Tue May 28, 2019 9:00 am
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: Help with VK204-25 I2C communication
Replies: 9
Views: 1351

Re: Help with VK204-25 I2C communication

Hi Leonardo, It's good to see some of our older display models are still kicking around! The baud rate and I2C address on your Rev 1.22 VK204-25 can be configured by populating jumpers on the J0-J3 pins. According to section 2.1.3 in the VK204-25 Rev 1.23 classic manual, it looks like your display i...
by Daniel Divino
Fri May 24, 2019 1:51 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: Make EVE2-29A look like a green crt display
Replies: 16
Views: 2465

Re: Make EVE2-29A look like a green crt display

Hi Bob, You should be able to do that. Just convert all of the wr32 RAM_DL functions to their SendCMD counterparts. See below: // Using raw uncompressed bitmap data, the CoProcessor is not needed for inflation and the data is // stored into RAM_G without the use of the FIFO / CoProcessor. // This fu...
by Daniel Divino
Thu May 23, 2019 3:38 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: Make EVE2-29A look like a green crt display
Replies: 16
Views: 2465

Re: Make EVE2-29A look like a green crt display

Hi Bob, Please see the attached code. It's essentially a modified version of our EVE School code, but it draws your test image on screen. It includes 2 versions of your test screen: a jpg variant and a .raw variant. Their load times are comparable. I used Irfanview to convert your .tif image to a jp...
by Daniel Divino
Thu May 23, 2019 3:01 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: Make EVE2-29A look like a green crt display
Replies: 16
Views: 2465

Re: Make EVE2-29A look like a green crt display

Hi Bob,

I finally have some good news for you! I was able to load the image off of the SD card, scale it to fit the screen, and display it on the EVE2-29A.

I'll have to clean up my code, but I'll make sure to upload it later tonight.

Cheers,
Daniel
by Daniel Divino
Thu May 23, 2019 10:59 am
Forum: EVE2 & EVE3 SPI TFT's
Topic: Make EVE2-29A look like a green crt display
Replies: 16
Views: 2465

Re: Make EVE2-29A look like a green crt display

Hi Bob,

What kind of speeds were you seeing? Was it relatively fast to update?

Cheers,
Daniel
by Daniel Divino
Wed May 22, 2019 2:25 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: Make EVE2-29A look like a green crt display
Replies: 16
Views: 2465

Re: Make EVE2-29A look like a green crt display

Hi Bob, I've played around with the image you've provided and I'm still having difficulties displaying it properly on the EVE. I am able to get... something. But it definitely isn't what we want. Would it be possible for you to send me a jpeg version of what you are looking to display? Cheers, Daniel
by Daniel Divino
Wed May 15, 2019 5:23 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: Make EVE2-29A look like a green crt display
Replies: 16
Views: 2465

Re: Make EVE2-29A look like a green crt display

Hi Bob, I've done some testing here, and unfortunately, I wasn't able to display your image successfully in a relatively quick manner. I can display images, but they take a little bit of time to load from the SD card. I'll continue testing, but I should let you know that I'll be out of the office be...
by Daniel Divino
Mon May 13, 2019 9:06 am
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: Upgrading ELK204-7T firmware
Replies: 2
Views: 499

Re: Upgrading ELK204-7T firmware

Hi Foobar, Welcome to the Forums! Yes, you are correct. The ELK204-7T-1U is based on our LK204-7T-1U display. As you have mentioned, there seem to be a few errors in the display's description. I apologize for any inconvenience this has caused you. We are working to correct these errors on our websit...
by Daniel Divino
Thu May 02, 2019 1:32 pm
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: Boot screen with company logo?
Replies: 3
Views: 784

Re: Boot screen with company logo?

No Worries Mascenzi. Also, just a heads up, we have a program called BootLogo that can help you design your logo. In addition, the program allows you to upload your logo along with your custom characters directly to the display from your PC. The program should make it a easier to design your custom ...
by Daniel Divino
Thu May 02, 2019 1:00 pm
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: Boot screen with company logo?
Replies: 3
Views: 784

Re: Boot screen with company logo?

Hi Mascenzi, There are only 8 custom characters available on the OK204. You could try to find a way to use the same custom characters for different parts of your Logo eg. you could modify some of the custom characters used in the 'I' so that they can be reused in the 'P'. That would reduce the amoun...
by Daniel Divino
Thu May 02, 2019 8:38 am
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: C++ using customer characters? OK204-25-USB
Replies: 5
Views: 840

Re: C++ using customer characters? OK204-25-USB

No worries Mascenzi,

Let me know if you have any other questions!

Thanks,
Daniel
by Daniel Divino
Wed May 01, 2019 9:41 am
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: C++ using customer characters? OK204-25-USB
Replies: 5
Views: 840

Re: C++ using customer characters? OK204-25-USB

Hi Mascenzi,

You should be able to send either of the following:

WriteFile(my_port,"\0x00", 1, &bytes_written, NULL);

or

unsigned char b = 0x00;
WriteFile(my_port,&b, 1, &bytes_written, NULL);

No command will be needed to draw the custom character on the screen.

Cheers,
Daniel
by Daniel Divino
Tue Apr 30, 2019 4:31 pm
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: C++ using customer characters? OK204-25-USB
Replies: 5
Views: 840

Re: C++ using customer characters? OK204-25-USB

Hi mascenzi, It won't be necessary for you to save your custom characters in order to use them. Once a character is created, you can draw it on screen it by sending the assigned custom character ID to the display. I have a pseudo code example demonstrating how to use custom characters below: ClearSc...
by Daniel Divino
Mon Apr 29, 2019 8:52 am
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: C++ OK204-25-USB writing text issue
Replies: 4
Views: 866

Re: C++ OK204-25-USB writing text issue

Hi mascenzi, Sorry for the delay in getting back to you! I'm glad to hear that you were able to resolve the issue. Now that your communication interface has been sorted, you should have everything you need to fully control your new display. Let us know if you have any other questions or concerns! Ch...
by Daniel Divino
Fri Apr 26, 2019 9:26 am
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: C++ OK204-25-USB writing text issue
Replies: 4
Views: 866

Re: C++ OK204-25-USB writing text issue

Hi mascenci, Welcome to the forums! I've taken a look at your first photo (helloworldchar.jpg) and it looks like your string's NULL terminator (0x00) is also being sent and displayed on screen. Sending the Hello World string without the following NULL terminator should get rid of that extraneous cha...