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I have bought a 3.95 inch TFTLCD for Raspberry Pi (ILI9488 from mcufriend) and I can't get it to work. I am just mildly experienced with Raspberry and Linux, but the way this type of screen was shown I thought it is simple plug-configure something-and play type of deal, but it seems that GPIO screens are harder to operate than I thought. I have Raspberry Pi 2 (Two of them, actually one running Raspbian and second with OSMC-Kodi)

I have already tried some automatic scripts, some tutorials and methods and all of them failed in one way or another. I am linking two of them just to prove that I know how to use Google. I tried also Adafruit easy install and some others, but this site will not let me link more than two addresses.

And many, many more, I would need to retrace all my history. They are also not consistent so I am not able to mix "some of that and some of that" to make a solution. And my screen is just white and blank. So for me, this is a first problem that internet search can't solve and I am surprised.

Is there any tutorial that can guide me step by step in setting it up? Can anyone help me?

Greenonline
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ElectronicallyTroubled
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3 Answers3

3

it's easy to work on debian jessie, i assume that you have latest version installed and fully worked with spi enabled. to make display working at boot follow this steps:

1) read the guide in previous answer "Cheap TFT display for Raspberry Pi"

2) create a new file called fbtft.conf under /etc/modules-load.d/ with command

sudo nano /etc/modules-load.d/fbtft.conf

and add the following lines: 

spi-bcm2835  
flexfb  
fbtft_device

3) create a new file called fbtft.conf under /etc/modprobe.d/ with command

sudo nano /etc/modprobe.d/fbtft.conf

and add the following lines:

options fbtft_device name=flexpfb rotate=180 fps=60 gpios=dc:18,reset:7,wr:17,cs:4,db00:22,db01:23,db02:24,db03:10,db04:25,db05:9,db06:11,db07:8  
options flexfb width=480 height=320 buswidth=8 init=-1,0xb0,0x0,-1,0x11,-2,120,-1,0x3A,0x55,-1,0xC2,0x33,-1,0xC5,0x00,0x1E,0x80,-1,0x36,0x28,-1,0xB1,0xB0,-1,0xE0,0x00,0x04,0x0E,0x08,0x17,0x0A,0x40,0x79,0x4D,0x07,0x0E,0x0A,0x1A,0x1D,0x0F,-1,0xE1,0x00,0x1B,0x1F,0x02,0x10,0x05,0x32,0x34,0x43,0x02,0x0A,0x09,0x33,0x37,0x0F,-1,0x11,-1,0x29,-3

4) Open cmdline.txt in the editor and add this line BEFORE rootwait parameter:

fbcon=map:10 fbcon=font:VGA8x8 FRAMEBUFFER=/dev/fb1

5) install framebuffer drivers :

sudo apt-get install xserver-xorg-video-fbdev

6) create new x config file with command: 

sudo nano /usr/share/X11/xorg.conf.d/99-fbdev.conf

...and add the following lines:

Section "Device"  
  Identifier "myfb"
  Driver "fbdev"
  Option "fbdev" "/dev/fb1"
EndSection

save, reboot and enjoy!

boot process

enter image description here

jsotola
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alezbarra
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2

Apparently I should not give up after three days of research. More effort was required. Just few hours after posting this I finally found out the correct way to do this.

This method works with combination of RPi 2 and ILI9844 3.95 inch screen: Cheap TFT display for Raspberry Pi

Note: It requires downgrade to Raspbian Wheezy! It does not work for Raspbian Jessie

I am leaving this for other frustrated Raspberry Pi enthusiasts out there.

Greenonline
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ElectronicallyTroubled
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0

One precision : 

options fbtft_device name=flexpfb rotate=180 fps=60 gpios=dc:18,reset:7,wr:17,cs:4,db00:22,db01:23,db02:24,db03:10,db04:25,db05:9,db06:11,db07:8

options flexfb width=480 height=320 buswidth=8 init=-1,0xb0,0x0,-1,0x11,-2,120,-1,0x3A,0x55,-1,0xC2,0x33,-1,0xC5,0x00,0x1E,0x80,-1,0x36,0x28,-1,0xB1,0xB0,-1,0xE0,0x00,0x04,0x0E,0x08,0x17,0x0A,0x40,0x79,0x4D,0x07,0x0E,0x0A,0x1A,0x1D,0x0F,-1,0xE1,0x00,0x1B,0x1F,0x02,0x10,0x05,0x32,0x34,0x43,0x02,0x0A,0x09,0x33,0x37,0x0F,-1,0x11,-1,0x29,-3

Those are only two lines of code not 4 lines. Had a white screen for some time before understanding it !

paddlestroke
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