Solved HELP can't use PiTFT recalbox 6.1.1

[ppfromero]

Hello guys,

I want to use my piTFT resistive screenc 320x240 TFT with my RPI2 and recalbox 6.1.1,

I put the following lines via recalbox web UI following the page:
https://github.com/recalbox/recalbox-os/wiki/TFT-Screen-SPI-Bus-(EN)

Overlay config with standard values for fb copy

dtparam=spi=on
dtparam=i2c1=on
dtparam=i2c_arm=on
#forcing HDMI output at TFT screen resolution to be able to make the FB copy
#resolution configuration
hdmi_force_hotplug=1
hdmi_cvt=320 240 60 1 0 0 0
hdmi_group=2
hdmi_mode=87
# working config for speed
# 900 Mhz -> 48000000
# 1Ghz -> 35000000
#modification of the speed   
dtoverlay=pitft28-resistive,rotate=90,speed=22000000,fps=60

Enable fb

## fbcp FrameBuffer Copy Program
## For small TFT screen on GPIO and SPI
## See https://github.com/recalbox/recalbox-os/wiki/Utility---Use-of-fbcp-for-small-TFT-screen-%28EN%29 for details
## Needed for Waveshare 3.2" 3.5" TFT screen, 2.8" Adafruit screen
## See https://github.com/recalbox/recalbox-os/wiki/TFT-Screen-SPI-Bus-%28EN%29
## for support and configuration details needed by /boot/config.txt
system.fbcp.enabled=1

Disable GPIO

# ------------ D2 - GPIO Controllers ------------ #
## GPIO Controllers
## enable controllers on GPIO with mk_arcarde_joystick_rpi (0,1)
controllers.gpio.enabled=0
## mk_gpio arguments, map=1 for one controller, map=1,2 for 2 (map=1,map=1,2)
##controllers.gpio.args=map=1,2
## Custom mk_gpio arguments,
## map=5 gpio1=Y-,Y+,X-,X+,start,select,a,b,tr,y,x,tl,hk  for one controller,
## map=5 gpio1=pin1,pin2,pin3,.....,pin12,pin13
## map=5,6 gpio1=Y-,Y+,X-,X+,start,select,a,b,tr,y,x,tl,hk gpio2=Y-,Y+,X-,X+,start,select,a,b,tr,y,x,tl,hk for 2 (map=5,map=5,6)
## map=5,6 gpio1=gpiox,gpioy,gpioz,.....,gpiou,gpiov gpio2=gpiox,gpioy,gpioz,.....,gpiou,gpiov
# where gpiox,gpioy,gpioz ... are NOT pin numbers on the connector, BUT location gpio numbered as in 
# https://www.raspberrypi-spy.co.uk/wp-content/uploads/2012/06/Raspberry-Pi-GPIO-Layout-Model-B-Plus-rotated-2700x900.png
## Set pin to -1 to disable it
# controllers.gpio.args=map=5,6 gpio=4,17,27,22,10,9,25,24,23,18,15,14,2 gpio2=11,5,6,13,19,26,21,20,16,12,7,8,3
## MCP configuration : GPIO and MCP can be used together. You can mix them.
## map=0x20,0x21 for 2 mcp23017 on i2c bus
#controllers.gpio.args=map=0x20,0x21,5,6 gpio=4,17,27,22,10,9,25,24,23,18,15,14,-1 gpio2=11,5,6,13,19,26,21,20,16,12,7,8,-1

Video settings

## Set game resolution for emulators
## select your mode from the command : tvservice -m [MODE]
## CEA 5 HDMI : 1920x1080 @ 60Hz 16:9, clock:74MHz interlaced 
## CEA 4 HDMI : 1280x720 @ 60Hz 16:9, clock:74MHz progressive
## use 'default' for using the default resolution
## use 'auto' : switches to CEA 4 HDMI if supported, else keep the current resolution
## (string)
##global.videomode=CEA 4 HDMI
global.videomode=default
## Shader set 
## Automatically select shaders for all systems
## (none, retro, scanlines)
global.shaderset=none
## Once enabled, your screen will be cropped, and you will have a pixel perfect image (0,1)
global.integerscale=0
## Set gpslp shader for all emulators (prefer shadersets above). Absolute path (string)
global.shaders=
## Set ratio for all emulators (auto,4/3,16/9,16/10,custom)
##global.ratio=auto
global.ratio=4/3

The screen remain white ...
Any additional idea?

Best regards

José

[acris]

Hello

Do you upload or check if pitft28-resistive.dtbo file exist in /boot/overlays ?

Can you run this commande in ssh : ps aux | grep fbcp and post the result.

@ian57 any idea ?

[ppfromero]

Hello!!
Yes the pitft28-resistive.dtbo exist in sdcard at overlay directory

the command

# # ps aux | grep fbcp
# root       855  0.0  0.0   2340   228 pts/0    S+   15:51   0:00 grep fbcp

thanls for your help

José

[ian57]

@ppfromero did you wire the screen by yourself using wires, or is it plugged directly on the gpio? Can you send the exact type of screen your are using. Perphaps you don't use the right overlay

you can check if /dev/fb1 exists to see if your screen is activated, but il remains white, so for me the overlay you are using using is not good...

[ppfromero]

@ian57
Yes sure here below the pictures:

Model is PITFT Mini Kit - 320x240 2.8
TFT + Touchscreen for Raspberry PI
Resistive version
I buy the screen with GPIO connector 26 points
If the picture don't appears internet link
http://www.ohmeron.be/fr/prototyping/lcd-tft/pitft-mini-kit-320-x-240-2-8-touchscreen-for-raspberry.html

My RPI:
RPI2 Model B V1.1 (2014)

No fb1 in dev, only fb0

Then something strange, the following lines:

dtparam=spi=on
dtparam=i2c1=on
dtparam=i2c_arm=on

Are always replaced by:

dtparam=i2c_arm=on
dtparam=i2c_arm=on
dtparam=i2c_arm=on

After reboot....

Thanks again guys

[acris]

You need to rw partition

mount -o remount,rw /boot to modify config.txt

[ppfromero]

@acris ok guys I understand my mistake, I put all the initial configuration in recalbox/share/system/ recalbox.conf file and not in boot....

Now it's working fine!
Thanks again for your help

Regards
José

[ian57]

@ppfromero that's why you need to read attentively the documentation