BT817 with 1024x600 display not working

FTDI/Bridgetek EVE2 & EVE3 & EVE4 SPI TFT Series by Matrix Orbital

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daviid0_o
LCD?
Posts: 1
Joined: Fri Jul 08, 2022 12:14 pm

BT817 with 1024x600 display not working

Post by daviid0_o »

Hello,

I have a BT817 chip soldered to a brakeout pcb with all the necessary components and power it needs to work, and it does, but..
The display I have it's a waveshare display (FY07024DI26A67-FT) 1024x600(PDF attached) and using a STM32 to drive it using the BT817.

The library on GITHub has only examples(configurations) up to 800x400 resolution ,which works but at a smaller resolution than my display(in the picture below, the text at the bottom should not appear), and I tried to modify the parameters to match my display but I can't make it work at all after this. When uploading the code with the following parameters the display doesn't even show anything.
These are the parameters I modified in Eve2_81x.c according to the displays PDF timings (SYNC MODE) :

case DISPLAY_CUSTOM:
DWIDTH = 1024;
DHEIGHT = 600;
PIXVOFFSET = 0;
PIXHOFFSET = 0;

HCYCLE = 1343; // horizontal Total
HOFFSET = 319; // 160hFront + 20hPulse + 140hBack
HSYNC0 = 160; // 160hFront
HSYNC1 = 179; // 160hFront + 20hPulse
VCYCLE = 634; // vertical Total
VOFFSET = 46; // 12vFront + 2vPulse + 20vBack
VSYNC0 = 12; // 12vFront
VSYNC1 = 14; // 12vFront + 2vPulse
PCLK = 1;
SWIZZLE = 0; // RGB Order
PCLK_POL = 2;
HSIZE = 1024;
VSIZE = 600;
CSPREAD = 0;
DITHER = 1; // Image Quality


Also tried to change only the resolution in the parameters, without modifying any other timings, and also doesn't work.
In the init function of the BT817, FT81x_Init(DISPLAY_CUSTOM, BOARD_EVE2, TOUCH_TPC);, I use "BOARD_EVE2", because BOARD_EVE3 or BOARD_EVE4 also don't work at all even with the 800x400 resolution, which worked before.

What else should I do to configure and make BT817 drive my display at it's native resolution?

THANK YOU!
Attachments
Capture.PNG
Capture.PNG (391.09 KiB) Viewed 20089 times
20220708_211756.jpg
20220708_211756.jpg (3.48 MiB) Viewed 20089 times
7inch_1024X600_LCD_DS.pdf
(1.12 MiB) Downloaded 3560 times

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