Search found 236 matches

by Daniel Divino
Mon Aug 12, 2019 4:22 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: require code for designing on EVE2-70A
Replies: 11
Views: 687

Re: require code for designing on EVE2-70A

Hi Madhusudan.jadhav,

What are you trying to draw on the screen? Could you provide a snippet of your code?

Cheers,
Daniel
by Daniel Divino
Fri Aug 09, 2019 11:12 am
Forum: EVE2 & EVE3 SPI TFT's
Topic: EVE2-43G intialization difficulty
Replies: 3
Views: 46

Re: EVE2-43G intialization difficulty

Hi Paul, Your setup looks correct. That said, there could be other factors of your setup which may be affecting the display's operation. During testing here, we found that the FT81x is very stingy about how our traces were routed. For your situation, I suggest using the USB2SPI as a method of verify...
by Daniel Divino
Thu Aug 08, 2019 10:16 am
Forum: EVE2 & EVE3 SPI TFT's
Topic: EVE2-43G intialization difficulty
Replies: 3
Views: 46

Re: EVE2-43G intialization difficulty

Hi Paul, Welcome to the forums! Out of curiosity, were you able to purchase a USB2SPI bridge adapter, or an Arduino Scoodo Shield? We can guarantee that our demos will run on our hardware, and we strongly advise purchasing either of these pieces to verify that your display is working. Do you have a ...
by Daniel Divino
Thu Aug 08, 2019 8:47 am
Forum: EVE2 & EVE3 SPI TFT's
Topic: require code for designing on EVE2-70A
Replies: 11
Views: 687

Re: require code for designing on EVE2-70A

Hi Madhusudan.Jadhav,

Your connections are correct. Are you still having difficulties communicating with the display?

Cheers,
Daniel
by Daniel Divino
Mon Jul 22, 2019 3:17 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: EVE2 QSPI not responding
Replies: 5
Views: 168

Re: EVE2 QSPI not responding

Hi Blake, Could you specify which demo you are referencing? It is recommended that the ACTIVE command is sent to wake up the Graphics controller. We could try taking a look at the file here, though we don't actually use a Saleae logic analyzer. While the backlight doesn't need to be connected, 3V3 p...
by Daniel Divino
Thu Jul 18, 2019 4:22 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: EVE2 QSPI not responding
Replies: 5
Views: 168

Re: EVE2 QSPI not responding

Hey there Broth! Welcome to the forums! Could you provide the initialization code that you are using for your setup? In all of our demos we send the following to the display: Gpu_Hal_SetSPI(host, GPU_SPI_SINGLE_CHANNEL, GPU_SPI_ONEDUMMY); /* Access address 0 to wake up the chip */ Gpu_HostCommand(ho...
by Daniel Divino
Mon Jul 08, 2019 4:00 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: Updating Button Text And Colour
Replies: 5
Views: 200

Re: Updating Button Text And Colour

Hi Andrew, I'm sorry to hear that your experience with our EVE was not optimal. Understandably, the FT812/813, though very capable, has quite a steep learning curve. I'm glad to hear that you would be willing to try out our GTT. Our GTT will be much easier to develop for, and I'm confident you'll fi...
by Daniel Divino
Mon Jul 08, 2019 3:56 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: EVE2-38G question about of the touch calibration
Replies: 9
Views: 883

Re: EVE2-38G question about of the touch calibration

Hi Suresh, Thank you for clarifying. Could you try replacing the following lines in MO_Calibrate: //Ft_Gpu_Hal_WrMemFromFlash(phost,RAM_G,TOUCH_DATA_U8,sizeof(TOUCH_DATA_U8)); Ft_Gpu_Hal_WrMemFromFlash(phost,RAM_CMD,TOUCH_DATA_U8,sizeof(TOUCH_DATA_U8)); with Gpu_Hal_WrCmdBuf(phost, CTOUCH_CONFIG_DAT...
by Daniel Divino
Fri Jul 05, 2019 8:36 am
Forum: EVE2 & EVE3 SPI TFT's
Topic: EVE2-38G question about of the touch calibration
Replies: 9
Views: 883

Re: EVE2-38G question about of the touch calibration

Hi Suresh,

It looks like your photo didn't upload properly. Please try uploading the photo again.

Also, are you sure you are using a capacitive touch screen? In your other posts, it looks like you are using a resistive touch screen.

Cheers,
Daniel
by Daniel Divino
Thu Jul 04, 2019 5:05 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: EVE2-38A-BLH-TPR Screen resolution & Touch screen issue
Replies: 4
Views: 245

Re: EVE2-38A-BLH-TPR Screen resolution & Touch screen issue

Hi Suresh, Each resistive touch panel has it's own calibration values, and therefore, values that work for my display may not work properly for yours. I strongly suggest you try implementing the calibration function into your code and extracting the appropriate calibration values that way. Cheers, D...
by Daniel Divino
Thu Jul 04, 2019 5:03 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: Updating Button Text And Colour
Replies: 5
Views: 200

Re: Updating Button Text And Colour

Hi Andrew, Welcome to the forums! Here's a piece of code that will change the state of the button when it's held down. int tag = 0; while (1) { tag = Ft_Gpu_Hal_Rd8(phost, REG_TOUCH_TAG); Ft_Gpu_CoCmd_Dlstart(phost); Ft_App_WrCoCmd_Buffer(phost, CLEAR_COLOR_RGB(255, 255, 255)); Ft_App_WrCoCmd_Buffer...
by Daniel Divino
Wed Jul 03, 2019 5:17 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: EVE2-38A-BLH-TPR Screen resolution & Touch screen issue
Replies: 4
Views: 245

Re: EVE2-38A-BLH-TPR Screen resolution & Touch screen issue

Hi Suresh, 1) The EV2-38A is a little bit different from our other displays, as it is a 4.3" display cut in half. This means that it needs to use the 4.3" timing data in order to operate properly. Due to this, the FT81X's calibration command won't operate properly. That said, we have made a calibrat...
by Daniel Divino
Wed Jun 19, 2019 2:50 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: EVE2-38G question about of the touch calibration
Replies: 9
Views: 883

Re: EVE2-38G question about of the touch calibration

Hi Chris, I have created a program that will specifically load the capacitive touch calibration file onto the EVE display. The example includes 2 different calibration functions. One function (Calibrate_Cap_Touch) will read the calibration values from the SD card and upload them to the display. You ...
by Daniel Divino
Wed Jun 12, 2019 3:15 pm
Forum: LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT
Topic: Help with VK204-25 I2C communication
Replies: 9
Views: 751

Re: Help with VK204-25 I2C communication

Hey Leonardo,

Any luck establishing communication with the VK204-25?

Cheers,
Daniel
by Daniel Divino
Mon Jun 10, 2019 4:15 pm
Forum: EVE2 & EVE3 SPI TFT's
Topic: require code for designing on EVE2-70A
Replies: 11
Views: 687

Re: require code for designing on EVE2-70A

Hi Madhusudan.Jadhav, So you are not able to read '7C' from the FT81X during startup? The FT81X does require some time to start up. Could you try implementing a short delay at the beginning of your code to allow the EVE to boot properly? I'd say you start with 1000mS to start with. Once you have con...