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DSO oscilloscope with STM32

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I have compiled a source code for DSO oscilloscope with STM32f4 discovery board. and i used a 7inch color lcd with 50 pin interface via a ssd1963 driver board.
The source code is from this tutorial. Everything on discovery board seems to be OK, LEDs blinking well. but nothing appears on LCD screen, just backligh screen lights up.
The code has used UGFX source for driving screen.
so, is there any specific LCD that should be connected for this project to work ,with any specific part number or something?
I have attached schematic of my LCD driver interface board.



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