Orange Pi PC 3.95 inch display test

mariuszb

I plugged in and tested the 3.95 inch display with Orange Pi PC and Armbian Jessy.
It can be used for own use, this is only a test program  

http://pl.aliexpress...2236159766.html

https://github.com/flexiti/WiringOP

(2 files added :  displaytft.c and fonts.h)

Just compile and run displayTFT.c file  (example directory)  ( LCD also display CPU temperature)

nopnop2002

What is the difference between flexiti/WiringOP and zhaolei/WiringOP ?

mariuszb

DisplayTFT.c file in example ( and simplified access to ports (less transparent but 10 times faster - see #define FAST_DATA)

melanrz

you can use too notro driver for using lcd with framebufer
https://www.youtube.com/watch?v=H7NKQ_STfg0

mariuszb

melanrz
Why download the example you show is through these strange sites ? You can not put on Git?
What it is notro driver ?

melanrz

mariuszb replied at 2016-6-11 02:52
melanrz
Why download the example you show is through these strange sites ?  You can not put on Git ...

https://github.com/notro/fbtft

mariuszb

Now I have connected this display using fbtft


This is done as folows:

1. sudo modprobe fbtft_device name=flexpfb rotate=180 gpios=dc:110,reset:21,wr:1,cs:6,db00:3,db01:68,db02:71,db03:64,db04:2,db05:65,db06:66,db07:67
   
2. sudo modprobe flexfb width=320 height=480 buswidth=8 init=-1,0x11,-2,200,-1,0x36,-1,0x3A,0x05,-1,0x36,0x48,-1,0x13,-1,0x29,-1,0x2C,-3

Copy code

and test picture:

1. sudo fbi -d /dev/fb8 -T 1 -noverbose -a example.jpg

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Video:

1. sudo apt-get install -y mplayer
   
2. sudo SDL_VIDEODRIVER=fbcon SDL_FBDEV=/dev/fb8 mplayer -vo sdl -framedrop example.mpg

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Why it is extremaly slow ?  ( 1 frame pre second)
Some hint?

melanrz

mariuszb replied at 2016-6-20 17:50
Now I have connected this display using fbtft

add string on modprobe fbtft_device  speed=16000000 ,try diferent speed on spi bus whenb is to high screen make artefacts

Manjup

How do i drive this display with Python.
I am doing a project where i display some data on lcd with python how to drive this display and use custom string Characters on it

mariuszb

melanrz replied at 2016-6-23 04:47
add string on modprobe fbtft_device  speed=16000000 ,try diferent speed on spi bus whenb is to hig ...

This is not SPI device (8 bit paralel) , so speed def is not used