I have ordered a (let me quote title ? ) '5 inch LCD HDMI Touch Screen Display TFT LCD Panel Module Shield 800*480 for Banana Pi and Raspberry Pi 2 model B/B+' from Chinese seller (from aliexpress).I didn't even bothered to ask for source code for driver, because I'm quiet sure, I wouldn't get anything from the seller anyway (by my expirence to get from seller for 3.5inch spi lcd tft driver sources)..So I started to dig google, and I came across a https://github.com/derekhe/waveshare-7inch-touchscreen-driver , where this controller, or at least how the controller talk is explained. But there is no calibration so I ended with working touch panel only in small upper left rectangle where raw touch coordinates overlap with inside screen bounds (0,0 to 800,480).In searching for calibration, I found tslib https://github.com/kergoth/tslib which have everything that is needed to calibrate touch panel. First, I have installed tslib from rpi repos but, this lib is soooooo old that it remembers dinosaurs ? . I had to build one from source. After that I struggled how to make this 5inch touch panel works under xserver.. After 2 days, I got this panel working.. And below you can find how I did it ? :
- Small Hdmi Touch Screens
- Hdmi Touch Screen Controller Driver Windows 7
- Hdmi Touch Screen Controller Drivers
- Car Touch Screen Monitor Hdmi
- Hdmi Lcd Touch Screen
- Usb Touch Screen Controller Driver
Small Hdmi Touch Screens
My wiring is:
Edit
/boot/config.txt
, and find line hdmi_force_hotplug=1
, if line is commented then uncomment it. Now uncomment (enable) and set:Find many great new & used options and get the best deals for for Raspberry Pi HDMI VGA AV Driver Board 7'at070tn92 Touch Panel USB Controller at the best. Feb 28, 2019 - 5 inch Resistive Touch Screen LCD, HDMI interface, Designed for Raspberry. 3.1 Software; 3.2 Driver; 3.3 Image; 3.4 LCD Panel Dimension.
hdmi_group=2
hdmi_mode=87
Add under hdmi_mode line:
There is this option explained: https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=24679 , basically config HDMI to:
- resolution 800x480px,
- refresh 60Hz,
- aspect ratio 15:9,
- no margins,
- no interlace,
- normal blanking.
Now save, connect lcd if still not connected ? and reboot Pi
Hdmi Touch Screen Controller Driver Windows 7
This touch controller uses a GD32F103C8T6 (this is a pin-to-pin (and I think function-to-function too) clone of STM32F103C8T6, even font used for chip marking is identical ? ) and XPT2046. Manufacturer (whoever is) probably took just the USB VID number from D-WAV Scientific Co., Ltd (or just typed some random number and hit a D-WAV VID) ..
First look at dmesg:
So there is manufacturer: ? - and this touch panel doesn't have anything to them also.. But, the most interesting is in line
RPI_TOUCH
and product named: By ZH851
, this is a little different manufacturer than registered at usb.org [ 2.159236] usb 1-1.3: New USB device found, idVendor=0eef, idProduct=0005
which contains usb VID (idVendor) and PID (idProduct).I have touch panel that identify itself as VID & PID:Hdmi Touch Screen Controller Drivers
This is what lsusb says - confirms VID & PID (0eef:0005):
I have a touch controller that identify itself with
VID=0x0eef
. There are 2 versions:- one uses a 25 byte long touch data ,
- the other (in my case) use a 22 byte long touch data .
To identify them:
First, look at the last line in dmesg, there is a line just under serial number with a this touch panel usb vid:pid
0EEF:0005
followed by dot and endpoint number, after that is duble dot and names of devices registered in /dev/
in my case this is hidraw0
. Now I check what I have in /dev
from hidraw devices:I have 3 usb-hid compliant devices, one is a touch panel, two are for wireless mouse & keyboard . Which one is which, I'll just test each one of them ? ..
Go for first, type ?
sudo xxd -c 25 /dev/hidraw0
and I touch the panel screen with finger. If on terminal shows up some lines, then this device is my touch panel. I found my touch panel at first try hidraw0
(hit Ctrl+C
to exit) :How to tell, if I have 25 or 22 bytes version?Each report frame of touch start from 0xAA, followed by byte that tell if this is a touch or release. After this are 2 coordinates (x and Y) of touch in 16bit value (2 byte per each coordinate: 2 bytes for X and 2 bytes for Y - 4 bytes total). After that, is 0xBB and goes few 0x00's (in multi-touch panels (capacitive) in those bytes are placed up to 5 additional touch points).In first line there is already a start of next frame (0xAA) at 23rd byte, so I change parameter
-c
to 22 ( 25-(23-1) = 3 too much, 25-3=22):Now I have a nicely aligned each frame start at first byte (first column), and each frame fit exactly one line. So I have touch panel that report a touch with 22 bytes..
Don't install tslib from raspberry pi repositories this version is older than dinosaurs. I have to build more recent version from sources, so without grumbling:
Car Touch Screen Monitor Hdmi
autogen.sh
can produce some warning but they are not critical so ignore them ![Mod Mod](/uploads/1/2/4/7/124717891/570714605.jpg)
Libraries are installed at:
/usr/local/lib/libts-1.0.so.0.0.0
, tslib plugin drivers are installed at /usr/local/lib/ts
Now add to system path tslib plugin modules, create new file by (I use
vi
):Add in file:
Save, exit editor, and run to update LD path:
![Hdmi touch screen controller driver windows 10 Hdmi touch screen controller driver windows 10](/uploads/1/2/4/7/124717891/283578936.jpg)
Now copy from
tslib/etc`` to
/etc``` config file:Check
ts.conf
content and uncoment line module raw_input
( pi@raspiv2 ~/tslib/tslib $ sudo vi /etc/ts.conf
):Now test tslib by running ts_test, specify in command line tslib constans (TSLIB_CONFIGFILE - configruation file path, and TSLIB_FBDEVICE - frame buffer device, default for HDMI this is
/dev/fb0
):Now, appear black screen with croshair in middle and 3 buttons: Drag , Draw , QuitHit
Ctrl+C
to terminate.tslib now works, now I need user-space touch driver to install.
Now, I check what I have input devices before running the user-space driver. I have:
Bila di bandingkan dengan berbagai game keluaran terbaru seperti saat ini yang telah melanda, game psp tidak kalah seru jika di ukur dari segi game play yang di suguhkan. Dari sekian banyak game psp ada beberapa yang paling ramai di mainkan, yaitu gta dan pes/sepak bola. Banyak sekali game psp yang saat ini bisa sobat mainkan di smartphone android dengan bantuan sebuah emulator ppsspp gold. Ppsspp gold apk. Apa lagi sejak adanya para modder handal, banyak game dari konsole playstation yang bisa di mainkan di dalam android, entah itu dengan menambahkan mod texture dan lain sebagainya. Memang ukuran setiap game psp berbeda-beda, ada yang kecil ada juga yang besar, tergantung dengan tingkat banyaknya karakter dan item-item di dalamnya.
Now, start a driver main script and see if touch panel is found:
When I touch screen, in terminal shows up new lines:
Start 2nd terminal, and check what new a event type input device was created, while the driver is running in first terminal:
The new ones are:
/dev/input/event2
and /dev/input/mouse1
. Particually, I'm most interrested in event2
.Now I can run calibration program from tslib using as device
event2
:Now show up a calibration program, touch 5 times at requested points with stylus.
[calib-screen.png]
Hdmi Lcd Touch Screen
Program closes itself after getting 5 points. I have in console now:
Check if
/etc/pointercal
file have calibration constans:Info: Last 2 values 800 and 480 are screen size.
In first terminal hit few times in succession
Ctrl+C
to stop driver script.Now run again driver script and check if calibration constans are loaded:
Looks like the calibration values loaded by driver from file are identical to those from ts_calibrate - this is great.
I have already started Xserver with displayed desktop, so when I touch there cursor goes, and as I move my finger on screen the cursor follows ?
Usb Touch Screen Controller Driver
To test calibration I created a small python program: touch-test.py . Just run it with sudo and you can test how precisie is calibration. This of course depends how precise you can touch the displayed point ?
This is easy, stop driver if still running in terminal (hit few times in succesion
Ctrl+C
).Just run install.sh:
If there is no errors then driver is installed and should be already running ?
If not running then start it with
sudo /etc/init.d/touch.sh start
I have modiffied a https://github.com/derekhe/waveshare-7inch-touchscreen-driver to works with VID=0eef PID=0005 and 22 bytes report length touch panel. I have also added a calibration because author of oryginal driver requested $$$ for calibration. I have published this under MIT license so you can do with it anything, and I do not take any responsibilites if something goes wrong.
Tested on Raspbian:
2015-09-24-raspbian-jessie.img
with all updates to now (2015-11-16).- tslib author https://github.com/kergoth/tslib
- author of https://github.com/derekhe/waveshare-7inch-touchscreen-driver for discovering how the controller talks
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