TFT35" Touch Shield For RPi SKU: AC-TFT35V-2.1

[lcwii]

Anyone seen this one? Looks similar to the Waveshare. Acquired from eBay.

They have a .img for the RPi B+, but not the RPi 2 yet.

[notro]

Looking at the ic's, it uses this interface circuit: https://github.com/notro/fbtft/wiki/SPI-interface-circuit
That makes me think that it could be a PiScreen clone.
If so, the latest Pi foundation kernel (rpi-update) and /boot/config.txt: dtoverlay=piscreen, should work.
Check here to see if the init sequence matches the one you have: https://github.com/raspberrypi/linux/blob/rpi-3.18.y/arch/arm/boot/dts/piscreen-overlay.dts

[lcwii]

Got in a Pi B+ today and looked at some of the files.

lsmod reports
Module Size Used by
joydev 9257 0
ads7846 8720 0
ads7846_device 6125 0
fbtft_device 34686 0
flexfb 14012 2
fbtft 30834 2 flexfb,fbtft_device
syscopyarea 2999 1 fbtft
sysfillrect 3294 1 fbtft
sysimgblt 2124 1 fbtft
fb_sys_fops 1435 1 fbtft
i2c_dev 7215 0
snd_bcm2835 19496 0
snd_soc_tas5713 5573 0
snd_soc_bcm2708_i2s 6186 0
regmap_mmio 2818 1 snd_soc_bcm2708_i2s
snd_soc_core 146249 2 snd_soc_tas5713,snd_soc_bcm2708_i2s
snd_compress 12594 1 snd_soc_core
regmap_i2c 1661 2 snd_soc_core,snd_soc_tas5713
snd_pcm_dmaengine 5505 1 snd_soc_core
regmap_spi 1913 1 snd_soc_core
snd_pcm 83853 3 snd_bcm2835,snd_soc_core,snd_pcm_dmaengine
snd_page_alloc 5140 1 snd_pcm
snd_seq 55476 0
snd_seq_device 6465 1 snd_seq
snd_timer 20981 2 snd_pcm,snd_seq
evdev 10713 8
leds_gpio 2079 0
led_class 4373 1 leds_gpio
snd 62252 7 snd_bcm2835,snd_soc_core,snd_timer,snd_pcm,snd_seq,snd_seq_device,snd_compress
spi_bcm2708 8111 0
i2c_bcm2708 4943 0

I tried to use this as a guide: http://www.circuitbasics.com/setup-lcd-touchscreen-raspberry-pi/ using the contents of the files found on the Pi B+. It did not work. I did see the device name is flexfb and the touch device is an ads7846. The touch driver does not seem to load, although the fbtft driver do seem to load. I am new to Linux and the Pi. I don't know how to check the init sequence to see if it matches. I also tried to modify /boot/config.txt with the addition of the line dtoverlay=piscreen.

lcwii

[notro]

If you add this to /boot/cmdline.txt you'll get the applied init sequence output in the kernel log. Shown with dmesg.

fbtft_device.debug=3

[lcwii]

Ok I put the fbtft_device.debug=3 line in /boot/config.txt.
/boot/config.txt now looks like this:

dtparam=spi=on
dtparam=i2c_arm=on
dtoverlay=piscreen
fbtft_device.debug=3

The only part of dmesg that seems to be pertinent is the following, it
appears there is an error on init

[ 18.044018] i2c /dev entries driver
[ 18.122712] flexfb: -1' invalid for parameterinit'
[ 18.206812] fbtft_device: SPI devices registered:
[ 18.206834] fbtft_device: 'fb' Platform devices registered:
[ 18.206859] fbtft_device: bcm2708_fb id=-1 pdata? no
[ 18.206891] fbtft_device: spi_busnum_to_master(0) returned NULL
[ 18.207007] fbtft_device: failed to register SPI device
[ 21.512559] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote
wakeup
[ 23.204597] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex,
lpa 0x41E 1
[ 24.645373] Bluetooth: Core ver 2.19

I am also not seeing the ads7648_device anywhere. Here is my /etc/modules

/etc/modules: kernel modules to load at boot time.

This file contains the names of kernel modules that should be loaded

at boot time, one per line. Lines beginning with "#" are ignored.

Parameters can be specified after the module name.

snd-bcm2835
i2c-bcm2708
i2c-dev

flexfb width=320 height=480 regwidth=16
init=-1,0xb0,0x0,-1,0x11,-2,250,-1,0x3A,0x55,-1,0xC2,0x44,-1,0xC5,0x00,0x00,0x00$
fbtft_device debug=3 rotate=90 name=flexfb speed=16000000
gpios=reset:25,dc:24
ads7846_device model=7846 cs=1 gpio_pendown=17 keep_vref_on=1 swap_xy=1
pressure_max=255 x_plate_ohms=60 x_min=200 x_max=3$

Looking at this again, it looks like the fbtft_device was already set to
a debug level of 3... I make that assumption not knowing how
/etc/modules work versus /boot/config.txt

lcwii

On 3/4/2015 8:47 AM, notro wrote:

If you add this to /boot/cmdline.txt you'll get the applied init
sequence output in the kernel log. Shown with dmesg.

|fbtft_device.debug=3
|

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#252 (comment).

[lcwii]

Notro,

 I also just noticed that in dmesg the SPI fails to register the 

device...

lcwii

On 3/4/2015 8:47 AM, notro wrote:

If you add this to /boot/cmdline.txt you'll get the applied init
sequence output in the kernel log. Shown with dmesg.

|fbtft_device.debug=3
|

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#252 (comment).

[notro]

You should put debug it in /boot/cmdline.txt not config.txt
But only if you use fbtft_device to load the device.

If you use Device Tree to load the device, do it like this in /boot/config.txt
dtoverlay=piscreen,debug=3

[ 18.206891] fbtft_device: spi_busnum_to_master(0) returned NULL

This means that spi-bcm2708 is not loaded.

Which kernel are you using?

[lcwii]

Notro,

 I can't read I guess, sorry about getting the files confused... 

3.18.6-v7i-aufs

lcwii

On 3/4/2015 10:15 AM, notro wrote:

You should put debug it in /boot/cmdline.txt not config.txt
But only if you use fbtft_device to load the device.

If you use Device Tree to load the device, do it like this in
/boot/config.txt
dtoverlay=piscreen,debug=3

[ 18.206891] fbtft_device: spi_busnum_to_master(0) returned NULL

This means that spi-bcm2708 is not loaded.

Which kernel are you using?

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#252 (comment).

[lcwii]

Notro,

 Could this be my problem?

http://raspberrypi.stackexchange.com/questions/27073/firmware-3-18-x-breaks-i2c-spi-audio-lirc-1-wire-e-g-dev-i2c-1-no-such-f

 I have turned on Device tree using raspi-config and according to 

this webpage it breaks I2C, I2S & SPI.

lcwii

On 3/4/2015 10:15 AM, notro wrote:

You should put debug it in /boot/cmdline.txt not config.txt
But only if you use fbtft_device to load the device.

If you use Device Tree to load the device, do it like this in
/boot/config.txt
dtoverlay=piscreen,debug=3

[ 18.206891] fbtft_device: spi_busnum_to_master(0) returned NULL

This means that spi-bcm2708 is not loaded.

Which kernel are you using?

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#252 (comment).

[notro]

3.18.6-v7i-aufs

This kernel is unknown to me.

If you have the folder /proc/device-tree with contents, you have a Device Tree enabled kernel.
/boot/config.txt options if you have DT:

• dtparam=spi=on
  This enables SPI so you can use fbtft_device
• dtoverlay=piscreen
  This enables SPI and adds a PiScreen device for use with FBTFT

[lcwii]

Notro,

 I have /proc/device_tree with contents, my /boot/config.txt is as 

follows:

dtparam=spi=on
dtparam=i2c_arm=on
dtoverlay=piscreen,debug=3

 When I rebooted I noticed several ERROR messages.

[info] Loading kernel module snd-bcm2835.
[ 0.107655] flexfb: '-1' invalid for parameter 'init'
[ 0.193113] fbtft_device: spi_busnum_to_master(0) returned NULL
[ 0.193236] fbtft_device: failed to register SPI device
[info] Loading kernel module i2c-bcm2708
[info] Loading kernel module i2c-dev
[info] Loading kernel module spi-bcm2708
ERROR: could not insert 'spi-bcm2708' : No such device
[info] Loading kernel module flexfb.
ERROR: could not insert 'flexfb': invalid argument
[info] Loading kernel module fbtft_device.
ERROR: could not insert 'fbtft_device': invalid argument
[info] Loading kernel module ads7846_device.
FATAL: Module ads7846_device not found.
[ok] Cleaning up temporary files... /tmp.

lcwii

On 3/4/2015 10:55 AM, notro wrote:

3.18.6-v7i-aufs

This kernel is unknown to me.

If you have the folder |/proc/device-tree| with contents, you have a
Device Tree enabled kernel.
/boot/config.txt options if you have DT:

• dtparam=spi=on
  This enables SPI so you can use fbtft_device
• dtoverlay=piscreen
  This enables SPI and adds a PiScreen device for use with FBTFT

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#252 (comment).

[krylm]

I bought same TFT35" Touch Shiled For RPi. SKU: AC-TFT35-V2.1 from dx.com http://eud.dx.com/product/844363295
After 2-3 hours of googling and trying I am finally done!

That worked:

I've made raspi-config to enable SPI and I2C
I've installed FBTFT drivers:
sudo REPO_URI=https://github.com/notro/rpi-firmware rpi-update

I've modified /etc/modules
fbtft_device name=piscreen rotate=90 speed=16000000

And I've added into /boot/config.txt
dtoverlay=piscreen fbtft_device.debug=3

After reboot is TFT screen finally black (instead of white) and after typing
con2fbmap 1 1
I can see login information.

Thanks a lot!

[lcwii]

Milan,

 Was this on a Pi B, B+ or a Pi 2?

Lester...

On 3/4/2015 4:30 PM, Milan Kryl wrote:

I bought same TFT35" Touch Shiled For RPi. SKU: AC-TFT35-V2.1 from
dx.com |http://eud.dx.com/product/844363295|
After 2-3 hours of googling and trying I am finally done!

That worked:

I've made raspi-config to enable /SPI and I2C/
I've installed /FBTFT drivers/:
|sudo REPO_URI=https://github.com/notro/rpi-firmware rpi-update|

I've modified //etc/modules/
|fbtft_device name=piscreen rotate=90 speed=16000000|

And I've added into //boot/config.txt/
|dtoverlay=piscreen
fbtft_device.debug=3|

After reboot is TFT screen finally black (instead of white) and after
typing
|con2fbmap 1 1|
I can see login information.

Thanks a lot!

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#252 (comment).

[krylm]

Pi2

[lcwii]

Milan,

 Ok, I have done a lot of things that are not required then, what 

version of kernel are you running?

Lester...

On 3/4/2015 5:09 PM, Milan Kryl wrote:

Pi2

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#252 (comment).

[krylm]

I have latest Raspbian installation from http://www.raspberrypi.org/downloads/

Linux 3.18.5-v7+ #1 SMP PREEMPT Fri Feb 6 23:06:57 CET 2015 armv7l

[lcwii]

Milan,

 I installed using Berryboot and my linux is showing 3.18.6-v7i-aufs 

for some reason. Notro indicated that he was not familiar with that version.

 Well, it didn't work...

 I think I am going to start over and use Noobs first and try to go 

from there. That way I know there isn't anything else that has been
loaded onto the system.

Lester...

On 3/4/2015 5:26 PM, Milan Kryl wrote:

I have latest Raspbian installation from
http://www.raspberrypi.org/downloads/

Linux 3.18.5-v7+ #1 #1 SMP
PREEMPT Fri Feb 6 23:06:57 CET 2015 armv7l

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#252 (comment).

[lcwii]

Milan,

Thank you! I have the display working now. Now I just need to calibrate
the touch screen.

Your last step 'sudo con2fbmap 1 1', did not seem to work for me.

 So I have it running in graphical mode. I used this from 

http://www.circuitbasics.com/setup-lcd-touchscreen-raspberry-pi/ :

Next we need to configure the /fbturbo video driver/ to output the
display of the Raspberry Pi to the SPI bus instead of the HDMI bus. At
the command prompt, enter:

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

In this file, find the line that says: Option “fbdev” “/dev/fb0″ and
change the fb0 to fb1:

I had screwed up my /boot/config.txt file.

Lester...

//||//||

On 3/4/2015 5:26 PM, Milan Kryl wrote:

I have latest Raspbian installation from
http://www.raspberrypi.org/downloads/

Linux 3.18.5-v7+ #1 #1 SMP
PREEMPT Fri Feb 6 23:06:57 CET 2015 armv7l

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#252 (comment).

[krylm]

Yes, that's where I ended yesterday. With running text mode on PiScreen.

I'll try to continue with other steps today or tomorrow. If I'll be succcessful I let you know here.

Some resources:
https://github.com/notro/fbtft/wiki/Touchpanel
https://github.com/notro/fbtft_tools/wiki/ads7846_device

[notro]

@krylm you only need one of fbtft_device or dtoverlay, not both.
They both add the piscreen device. I will guess that fbtft_device is the one that wins by overwriting the device added by dtoverlay.
And if you use dtoverlay, you don't have to enable SPI in raspi-config. The overlay enables it.
Source: https://github.com/raspberrypi/linux/blob/rpi-3.18.y/arch/arm/boot/dts/piscreen-overlay.dts

Regarding touch, here's a guide I wrote: https://github.com/notro/fbtft/wiki/FBTFT-on-Raspian

[krylm]

@notro Thanks for your help! Finally I understand it a bit. Default was dtoverlay. I wasn't able to make it work only with fbtft_device so I am using SPI & dtoverlay with 90deg rotation.

I've calibrated Touchpanel, didn't understand it that I need to touch the red crosses for the first time and had swapped axes. But now after proper calibration it's ok. So I don't need missing /etc/X11/xorg.conf.d/ directory.

Just one non related question. Not initialized TFT is shining white, after init it's ok in black. But when I shutdown raspberry it's white again. I have to remove power cord to make it black.

[lcwii]

Ok, how do you incorporate piscreen_overlay.dts ? I tried
dtoverlay=piscreen, piscreen_overlay but that did not work. I am
assuming that piscreen_overlay is incorporated into fbtxt_device or am I
wrong?

lcwii

On 3/5/2015 10:40 AM, Milan Kryl wrote:

@notro https://github.com/notro Thanks for your help! Finally I
understand it a bit. Default was dtoverlay. I wasn't able to make it
work only with fbtft_device so I am using SPI & dtoverlay with 90deg
rotation.

I've calibrated Touchpanel, didn't understand it that I need to touch
the red crosses for the first time and had swapped axes. But now after
proper calibration it's ok. So I don't need missing
/etc/X11/xorg.conf.d/ directory.

Just one non related question. Not initialized TFT is shining white,
after init it's ok in black. But when I shutdown raspberry it's white
again. I have to remove power cord to make it black.

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#252 (comment).

[krylm]

I just removed line from /etc/modules
fbtft_device name=piscreen rotate=90 speed=16000000
And line from /boot/config.txt
fbtft_device.debug=3

Changed line
dtoverlay=piscreen
to
dtoverlay=piscreen,rotate=90

and rebooted

after everything working, I've added into /boot/cmdline.txt
fbcon=map:10
before rootwait

from my description before
#252 (comment)

[lcwii]

Milan,

 Are you running in console mode? I am trying to run in GUI mode 

because a friend also got the same set up and is not a console person
and I am trying to help him with his Pi2. Getting the touch calibration
to work with the GUI has to be different than in console mode.

 One thing I know is different is I have to modify

/usr/share/X11/xorg.conf.d/99-fbturbo.conf
and change
Option "fbdev" "/dev/fb0"
to
Option "fbdev" "/dev/fb1"
to get the LCD working in GUI mode.

 I also tried to get both console and GUI mode to work at the same 

time and locked up the Pi2. Had to power down everything and start over
with a fresh start install.

Lester...

On 3/5/2015 12:16 PM, Milan Kryl wrote:

I just removed line from /etc/modules
|fbtft_device name=piscreen rotate=90 speed=16000000|
And line from /boot/config.txt
|fbtft_device.debug=3|

Changed line
|dtoverlay=piscreen|
to
|dtoverlay=piscreen,rotate=90|

and rebooted

after everything working, I've added into /boot/cmdline.txt
|fbcon=map:10|
before rootwait

from my description before
#252 (comment)
#252 (comment)

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#252 (comment).

[notro]

Not initialized TFT is shining white, after init it's ok in black. But when I shutdown raspberry it's white again. I have to remove power cord to make it black.

The Pi gpios are set as inputs on poweron. The display has the backlight control tied high, so a floating backlight pin turns on backlight.
When the FBTFT driver loads, it sets it's pins as output, initializes the display and fills it with zeros: Black display
When the Pi shuts down, Linux sets the pins back to a floating input, including the reset pin: Display loses initialization which results in a white display.

[leoneo]

Hello,
I am new on RPi2, I have the SKU: AC-TFT35-V2.1 from dx.com, I have install rasbian with berryboot.

How do you do to use this TFT ? Can you please explan step by step ?

Thanks you so much

Sorry for my bad english ;-)

[lcwii]

I would if I could, but I still don't have the touch screen working
correctly.

Lester...

On 3/12/2015 9:13 AM, leoneo wrote:

Hello,
I am new on RPi2, I have the SKU: AC-TFT35-V2.1 from dx.com, I have
install rasbian with berryboot.

How do you do to use this TFT ? Can you please explan step by step ?

Thanks you so much

Sorry for my bad english ;-)

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#252 (comment).

[scholzp]

Hi all,
i got this thing working as far, that i can view pictures with fbi on the touchscreen.
Does anyone knows how to enable the console on the touchscreen ?

[leoneo]

I lost a lot of time , I tried to install it several times but every time I have a hdmi black screen with a dash flashing _ ... _ ... _ ... _ ...

Please help

[scholzp]

It stoped working after i tried to calibrate the touchscreen and now it doesn't want to work again.
If it is working again, i'll write what i've done.

[deckardstp]

I already spend a few hours on getting this lcd working, but I only have the white screen. According to syslog and startup messages it looks quite good, nonetheless it doesn't work. If anyone has a working image I would really appreciate any help!

[lcwii]

Pi 2?

Lester...

On 3/24/2015 4:24 PM, Seb wrote:

I already spend a few hours on getting this lcd working, but I only
have the white screen. According to syslog and startup messages it
looks quite good, nonetheless it doesn't work. If anyone has a working
image I would really appreciate any help!

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#252 (comment).

[deckardstp]

Jep Pi2. I currently install it on a Pi1. Hope this works out.

[deckardstp]

Even on Pi1 same result. I tried also another Kernel, since I read it could be bug in the SPI communication in one of the last builds. I tried this yesterday on my Pi2 and produced kernel panic. It hasn't worked on the Pi1 either. Last shot is an image from dx.com. As soon as I know more I post it here.

[deckardstp]

Same result. dx.com Image was from 2014/10/31. I give up at that point. Spend to much time on this piece of crap.

[lcwii]

For console or desktop?

Lester...

On 3/25/2015 12:38 PM, Seb wrote:

Same result. dx.com Image was from 2014/10/31. I give up at that
point. Spend to much time on this piece of crap.

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#252 (comment).

[deckardstp]

The image? It didn't run on both Pi versions - so I can't tell...

[overheder]

Just chiming in here unfortunately. I have also spent quite a lot of time trying to get the display to work - it's white regardless what I do :-( Same problem on my RPI 1 incidentally.

Anyway, I have one question: How connected is the screen and the touch? I see pin 11 high all the time, even if I have a pin placed constantly on the resistive pad.... come to think of it, this may be expected behaviour, but I am clutching for straws.

These are the relevant files from my RPI 2 - I think! let me know if you need more

/etc/modprobe.d/raspi-blacklist.conf

#blacklist spi and i2c by default (many users don't need them)

#blacklist spi-bcm2708
#blacklist i2c-bcm2708

pi@raspberrypi ~ $ ls /proc/device-tree

#address-cells clocks interrupt-parent name sound
aliases compatible memory overrides symbols
axi cpus memreserve #size-cells system
chosen display model soc timer
pi@raspberrypi ~ $

cmdline.txt

dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fbtft_device.debug=3 rootwait config.txt

#for more options see http://elinux.org/RPi_config.txt
#dtparam=spi=on
dtparam=spi=on
dtparam=i2c_arm=on
dtoverlay=piscreen,fbtct_device.debug=3

no 99-fbturbo.conf file

/etc/modules: kernel modules to load at boot time.

#This file contains the names of kernel modules that should be loaded
#at boot time, one per line. Lines beginning with "#" are ignored.
#Parameters can be specified after the module name.

#snd-bcm2835
#spi-bcm2708
#i2c-BCM2708
#w1-gpio
#w1-therm

#tft

#fbtft_device name=piscreen rotate=90 speed=16000000

#flexfb width=320 height=480 regwidth=16 init=-1,0xb0,0x0,-1,0x11,-2,250,-1,0x3A,0x55,-1,0x36,0x28,-1,0xC2,0x44,-1,0xC5,0x00,0x00,0x0,0x0,-1,0xE0,0x0F,0x1F,0x1C,0x0C,0x0F,0x08,0x48,0x98,0x37,0x0A,0x13,0x04,0x11,0x0D,0x00,-1,0xE1,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0xE2,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0x11,-1,0X29,-3

#fbtft_device debug=3 rotate=90 name=flexfb speed=16000000 gpios=reset:25,dc:24,led:22
#ads7846_device model=7843 gpio_pendown=17 verbose=3 x_plate_ohms=100 pressure_max=255 swap_xy=1

redacted DMESG:

[ 3.045390] usb 1-1.5: Manufacturer: Microsoft
[ 3.069450] input: Microsoft Wired Keyboard 600 as /devices/platform/bcm2708_usb/usb1/1-1/1-1.5/1-1.5:1.0/0003:045E:0750.0002/input/input1
[ 3.075540] hid-generic 0003:045E:0750.0002: input,hidraw1: USB HID v1.11 Keyboard [Microsoft Wired Keyboard 600] on usb-bcm2708_usb-1.5/input0
[ 3.106538] input: Microsoft Wired Keyboard 600 as /devices/platform/bcm2708_usb/usb1/1-1/1-1.5/1-1.5:1.1/0003:045E:0750.0003/input/input2
[ 3.113946] hid-generic 0003:045E:0750.0003: input,hidraw2: USB HID v1.11 Device [Microsoft Wired Keyboard 600] on usb-bcm2708_usb-1.5/input1
[ 3.203769] udevd[175]: starting version 175
[ 3.725183] bcm2708_spi 3f204000.spi: DMA channel 2 at address 0xf3007200 with irq 77
[ 3.735038] bcm2708_spi 3f204000.spi: DMA channel 4 at address 0xf3007400 with irq 20
[ 3.783186] ads7846 spi0.1: touchscreen, irq 465
[ 3.798501] input: ADS7846 Touchscreen as /devices/soc/3f204000.spi/spi_master/spi0/spi0.1/input/input3
[ 3.913238] fbtft_of_value: regwidth = 16
[ 3.929328] fbtft_of_value: buswidth = 8
[ 3.975809] fbtft_of_value: debug = 0
[ 3.984895] fbtft_of_value: rotate = 270
[ 3.992610] fbtft_of_value: fps = 30
[ 4.367633] graphics fb1: fb_ili9486 frame buffer, 480x320, 300 KiB video memory, 4 KiB DMA buffer memory, fps=33, spi0.0 at 32 MHz
[ 4.374195] bcm2708_spi 3f204000.spi: SPI Controller at 0x3f204000 (irq 80)
[ 4.380601] bcm2708_spi 3f204000.spi: SPI Controller running in dma mode
[ 4.387222] bcm2708_i2c_init_pinmode(1,2)
[ 4.394521] bcm2708_i2c_init_pinmode(1,3)
[ 4.402708] bcm2708_i2c 3f804000.i2c: BSC1 Controller at 0x3f804000 (irq 79) (baudrate 100000)
[ 5.441402] random: nonblocking pool is initialized
[ 5.964066] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 6.222879] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 8.985455] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 10.382315] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[ 14.380080] Adding 102396k swap on /var/swap. Priority:-1 extents:1 across:102396k SSFS
[ 223.214745] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1

As you can see from the dmesg, the display is recognized, and set as fb1
sudo fbi -noverbose -T 1 -a -d /dev/fb1 image-test.gif
yields that fb1 is write protected :-(

[overheder]

I forgot to mention, that there is no input from input3, when I test that.

[exzile]

I am working on installing this into my pi also. I am in the step of downloading the image and I am using a pi b. Do you guys know where I can find the pin layout? I want to be able to free up pins, especially the communication pins 'I2C, SPI'.

[lcwii]

Here is the schematic I got from the seller I got mine from. Pi
connector on the left.

Lester...

On 4/11/2015 9:48 PM, exzile wrote:

I am working on installing this into my pi also. I am in the step of
downloading the image and I am using a pi b. Do you guys know where I
can find the pin layout? I want to be able to free up pins, especially
the communication pins 'I2C, SPI'.

—
Reply to this email directly or view it on GitHub
#252 (comment).

[Texy]

No picture or attachment ?

[lcwii]

On 4/14/2015 6:58 PM, Texy wrote:

No picture or attachment ?

—
Reply to this email directly or view it on GitHub
#252 (comment).

I guess github tosses attachments...

Lester...

[lcwii]

Ok, attachments don't work, clipboard paste doesn't seem to work either.
Try this link http://imgur.com/iSHliDt

Lester...

On 4/14/2015 6:58 PM, Texy wrote:

No picture or attachment ?

—
Reply to this email directly or view it on GitHub
#252 (comment).

[ShinyPC]

I have this touch screen installed on a pi 2 with latest kernel 3.18.11-v7. When I used Notro's firmware for kernel 3.18.10 everything worked correctly, including the touch screen. When I upgraded to latest raspbian firmware, the touch screen no longer works. Dmesg error ads7846: probe of spi0.1 failed with error 22. I am using device tree with piscreen and ads7846 overlays. How do I fix the ads7846 error to get touch working again?

[ShinyPC]

For those interested with latest raspbian on pi 2 B, the install for only the lcd display using device tree. This orientation puts the power cord on top.

#LCD Screen
#url #252
#if you use dtoverlay, you don't have to enable SPI in raspi-config. The overlay enables it.

#install lcd and touch screen
sudo nano /boot/config.txt
add
dtoverlay=piscreen,speed=32000000,rotate=90,debug=3 # fps=,debug
dtoverlay=ads7846,speed=32000000,rotate=90,swapxy,xohms=60 #xohms=60to100

#move display to lcd
sudo nano /usr/share/X11/xorg.conf.d/99-fbturbo.conf
change option “fbdev” /dev/fb0 to /dev/fb1

#move console to lcd
sudo /boot/cmdline.txt
add to end of line
fbcon=map:10 fbcon=rotate:2 fbcon=font:VGA8x8

[cnc4less]

ShinyPC, I followed what u wrote and got it working but without touch screen any ideas why is doing that ? i am using rpi2 with latest software.

[futuneral]

Hi. I'm pretty new to Linux/RPi, but with your help guys I was able to make TFT and touchscreen work on RPi2. However, one weird wrinkle. If I skip the step of installing FBTFT kernel with SPI DMA, everything is perfect (albeit slow). But if I do use it, I get some sort of corruption in the frame buffer - some colors are wrong, random white dots on the screen etc. What could be the cause for this? Any parameters to adjust? If I do raspi-update I go back to normal colors.
Here is my full sequence in case it helps someone:

1. sudo REPO_URI=https://github.com/notro/rpi-firmware rpi-update

2. sudo nano /boot/config.txt
add
dtoverlay=piscreen,speed=32000000,rotate=90
dtparam=i2c_arm=on

3. sudo nano /usr/share/X11/xorg.conf.d/99-fbturbo.conf
change option “fbdev” /dev/fb0 to /dev/fb1

4. sudo nano /boot/cmdline.txt
add to end of line
fbcon=map:10 fbcon=rotate:2 fbcon=font:VGA8x8

5. cd /tmp
wget http://tronnes.org/downloads/xinput-calibrator_0.7.5-1_armhf.deb
sudo dpkg -i -B xinput-calibrator_0.7.5-1_armhf.deb
rm xinput-calibrator_0.7.5-1_armhf.deb

6. sudo wget -O /etc/X11/Xsession.d/xinput_calibrator_pointercal https://raw.github.com/tias/xinput_calibrator/master/scripts/xinput_calibrator_pointercal.sh
echo "sudo /bin/sh /etc/X11/Xsession.d/xinput_calibrator_pointercal" | sudo tee -a /etc/xdg/lxsession/LXDE-pi/autostart

7. cd /etc/X11
sudo mkdir -p xorg.conf.d
sudo nano /etc/X11/xorg.conf.d/99-ads7846-cal.conf

Section "InputClass"
        Identifier      "calibration"
        MatchProduct    "ADS7846 Touchscreen"
        Option  "SwapAxes"      "1"
EndSection

[mwilliams03]

Reduce the speed below to 24000000 or 16000000. See if that makes a difference

On 19 May 2015, at 1:24 pm, futuneral notifications@github.com wrote:

Hi. I'm pretty new to Linux/RPi, but with your help guys I was able to make TFT and touchscreen work on RPi2. However, one weird wrinkle. If I skip the step of installing FBTFT kernel with SPI DMA, everything is perfect (albeit slow). But if I do use it, I get some sort of corruption in the frame buffer - some colors are wrong, random white dots on the screen etc. What could be the cause for this? Any parameters to adjust? If I do raspi-update I go back to normal colors.
Here is my full sequence in case it helps someone:

1. sudo REPO_URI=https://github.com/notro/rpi-firmware rpi-update
2. sudo nano /boot/config.txt
   add
   dtoverlay=piscreen,speed=32000000,rotate=90
   dtparam=i2c_arm=on
3. sudo nano /usr/share/X11/xorg.conf.d/99-fbturbo.conf
   change option “fbdev” /dev/fb0 to /dev/fb1
4. sudo nano /boot/cmdline.txt
   add to end of line
   fbcon=map:10 fbcon=rotate:2 fbcon=font:VGA8x8
5. cd /tmp
   wget http://tronnes.org/downloads/xinput-calibrator_0.7.5-1_armhf.deb
   sudo dpkg -i -B xinput-calibrator_0.7.5-1_armhf.deb
   rm xinput-calibrator_0.7.5-1_armhf.deb
6. sudo wget -O /etc/X11/Xsession.d/xinput_calibrator_pointercal https://raw.github.com/tias/xinput_calibrator/master/scripts/xinput_calibrator_pointercal.sh
   echo "sudo /bin/sh /etc/X11/Xsession.d/xinput_calibrator_pointercal" | sudo tee -a /etc/xdg/lxsession/LXDE-pi/autostart
7. cd /etc/X11
   sudo mkdir -p xorg.conf.d
   sudo nano /etc/X11/xorg.conf.d/99-ads7846-cal.conf

Section "InputClass"
Identifier "calibration"
MatchProduct "ADS7846 Touchscreen"
Option "SwapAxes" "1"
EndSection
—
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[futuneral]

mwilliams03, thanks! 24000000 made slight improvements, but 16000000 fixed it completely.

[overheder]

Updates from here

I finally got myfbturbo file to edit - by installing fbturbo, duh!
sudo apt-get update && sudo apt-get install xserver-xorg-video-fbturbo

@futuneral thanks! I updated to match your settings, and
sudo fbi -noverbose -T 1 -a -d /dev/fb1 image-test.gif
no longer yields that fb1 is write protected :-)

Do you have dtparam=spi=on in tour cmdline.txt?

When I try startx I get "module g2d_23 not found", so FBTURBO is installed - or I did not notice it before :-/, anyway it should be benign

I still have a display that's just white, but I'll keep hacking away - it's probably due to having an old image that's been upgraded over the years

[futuneral]

overheder
spi=on doesn't seem to matter with overlays. I had it both on and off and it worked the same.
I had to re-image my sdcard multiple times before I got this working. Sometime something just screws things up and it gets stuck at white screen even if you try to revert.
So I'd suggest to get the newest version of raspbian, then do step #2 and step #3. This actually seems to be the minimum that gets display working. After this you can proceed to other steps.

[chickey]

Has anyone been able to get emulationstation working on this tft display. I can get the console working well as well as x windows really well but by default emulationstsation won't display on the tft. I have been able to get it to display using fbcp but it's rather slow and not playable :-(

[ghost]

Hi,
thanks everybody for all your comments.
With this touchscreen, by following the tuto from @notro https://github.com/notro/fbtft/wiki/FBTFT-on-Raspian and the procedure described by @futuneral posted in this forum one month ago, my TFT35" Touch Shield (SKU: AC-TFT35V-2.1) works fine (calibration ok, touch control properly handled in X windows).
But now, I have an issue with kodi: kodi is properly displayed on my TFT screen by using fbcp but the touchcontrol doesn't work (I have also tried with kodi 're-touch' skin designed to be used on touch screen devices)
I'm stuck: I don't know what's wrong (kodi, xinput, ...) with my config.
Any suggestion ?
Thanks;

[plivive]

Hi,
I followed the steps described by "futuneral" and it worked hover my touch interface is still in portrait mode
I did the screen calibration but does not help.
tried with different screen rotation. 90°,180°,270°
any suggestions on how to rotate the touch interface with the screen.

have a Raspberry pi 2 B

[notro]

Closing issue since there has been no activity for more than 2 months. Reopen if needed.

[lfelipee]

Hello friends,
I would like to help those who were able to run the display and the touch sensor, but as I was, are annoyed to have to redo the calibration at each startup:

1- I disabled the calibration at start like this:
sudo nano / etc / xdg / lxsession / LXDE-pi / autostart
I inserted comment in the last line, but you can delete, whatever. The last killed string / is commented: sudo /bin/sh /etc/x11/Xsession.d/xinput_calibrator_pointcal

2- Run:
cd /etc/X11
sudo mkdir -p xorg.conf.d
sudo nano /etc/X11/xorg.conf.d/99-ads7846-cal.conf

Section "InputClass"
Identifier "calibration"
MatchProduct "ADS7846 Touchscreen"
Option "SwapAxes" "0"
EndSection

or simply change the option to "0"

3- Restart the Raspberry Pi 2

4- Run in terminal:
bin/sh -c "xinput_calibrator; cat"

Do the touch screen calibration and follow the instructions that will guide copying the calibration result and save the file:
sudo nano /etc/x11/xorg.conf.d/99-calibration.conf

5- Ready! Reinice to test!

Grades:
I'm using the Raspbian Wheezy version, Release date: 05/05/2015

I followed the information from our friend futuneral shortly after instação system.

I did not realize the system upgrade (step 1) as was already the latest version of Raspbian, funciou well, so I left anyway!

Follows playback futuneral Tutorial, by changing paso 7 since it would be necessary to change later (step 2 of the above tutorial):

1. sudo REPO_URI=https://github.com/notro/rpi-firmware rpi-update
2. sudo nano /boot/config.txt
   add
   dtoverlay=piscreen,speed=32000000,rotate=90
   dtparam=i2c_arm=on
3. sudo nano /usr/share/X11/xorg.conf.d/99-fbturbo.conf
   change option “fbdev” /dev/fb0 to /dev/fb1
4. sudo nano /boot/cmdline.txt
   add to end of line
   fbcon=map:10 fbcon=rotate:2 fbcon=font:VGA8x8
5. cd /tmp
   wget http://tronnes.org/downloads/xinput-calibrator_0.7.5-1_armhf.deb
   sudo dpkg -i -B xinput-calibrator_0.7.5-1_armhf.deb
   rm xinput-calibrator_0.7.5-1_armhf.deb
6. sudo wget -O /etc/X11/Xsession.d/xinput_calibrator_pointercal https://raw.github.com/tias/xinput_calibrator/master/scripts/xinput_calibrator_pointercal.sh
   echo "sudo /bin/sh /etc/X11/Xsession.d/xinput_calibrator_pointercal" | sudo tee -a /etc/xdg/lxsession/LXDE-pi/autostart
7. cd /etc/X11
   sudo mkdir -p xorg.conf.d
   sudo nano /etc/X11/xorg.conf.d/99-ads7846-cal.conf

Section "InputClass"
Identifier "calibration"
MatchProduct "ADS7846 Touchscreen"
Option "SwapAxes" "0"
EndSection

[alexeyzimarev]

I have got the same screen and I have RPi3. I followed the instructions for setting up pi-screen and it just worked. Also instructions for the touch screen worked fine.

[kjartani]

The same experience as alexeyzimarev. I have got the same screen and but I have RPi. I followed the instructions for setting up pi-screen and it just worked.