Hello
I've moved this message from an other thread to a new thread as this is concerning 7'' screen waveshare.
I have the touchscreen 7'' Waveshare HDMI LCD (C) on a raspberrypi 3B with PicorePlayer 5.0
I adapted pcp_startup.sh accordingly to use
BYZHYYZHY By ZH851 Touchscreen as identifier.
I: Bus=0003 Vendor=0eef Product=0005 Version=0110
N: Name="BYZHYYZHY By ZH851 Mouse"
P: Phys=usb-3f980000.usb-1.4/input0
S: Sysfs=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0/0003:0EEF:0005.0004/input/input6
U: Uniq=c0U585P865
H: Handlers=mouse1 event5 js0
B: PROP=0
B: EV=1b
B: KEY=70000 0 0 0 0 0 0 0 0
B: ABS=3
B: MSC=10
I: Bus=0003 Vendor=0eef Product=0005 Version=0110
N: Name="
BYZHYYZHY By ZH851 Touchscreen"
P: Phys=usb-3f980000.usb-1.4/input0
S: Sysfs=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0/0003:0EEF:0005.0004/input/input7
U: Uniq=c0U585P865
H: Handlers=mouse2
event6
B: PROP=0
B: EV=1b
B: KEY=401 0 1 0 0 0 0 0 0 0 0
B: ABS=100 3
B: MSC=10
in config.txt, I've added the following
Code:
max_usb_current=1
hdmi_group=2
hdmi_mode=87
hdmi_cvt 1024 600 60 6 0 0 0
hdmi_drive=1
Everything works fine for display, except the touchpad feature. only top-left corner seems ok. I cannot press anything on Jivelite. I must use a mouse to configure and use jivelite.
So I presume I shall calibrate the touchscreen. I did the following:
Code:
sudo TSLIB_FBDEVICE=/dev/fb0 TSLIB_TSDEVICE=/dev/input/event6 /usr/local/bin/ts_calibrate
I see the crosshair.
It seems the calibration process does not work well: sometimes it does not pass via all the corners points and jumps directly to the end. Thus the calibration file pointercal is not good.
Here is my ts.conf file:
Code:
# Access plugins
################
# Uncomment if you wish to use the linux input layer event interface
module_raw input
# For other driver modules, see the ts.conf man page
# Filter plugins
################
# Uncomment if first or last samples are unreliable
# module skip nhead=1 ntail=1
# Uncomment if needed for devices that measure pressure
#module pthres pmin=1
#module variance delta=30
# Uncomment if needed
module debounce drop_threshold=500
# Uncomment if needed to filter spikes
# module median depth=5
# Uncomment to enable smoothing of fraction N/D
# module iir N=6 D=10
# Uncomment if needed
# module lowpass factor=0.1 threshold=1
# Uncomment if needed to filter noise samples
#module dejitter delta=100
# Uncomment and adjust if you need to invert an axis or both
# module invert x0=800 y0=480
#module invert x0=1024 y0=600
# Uncomment to use ts_calibrate's settings
module linear
I tried to use different values, no effect.
I tried to calibrate by pressing very fast the screen to pass successfully to 5 area and I got this:
Code:
tc@piCorePlayer:/usr/local/bin$ sudo TSLIB_FBDEVICE=/dev/fb0 TSLIB_TSDEVICE=/dev/input/event6 /usr/local/bin/ts_calibrate
xres = 1024, yres = 600
Took 4 samples...
Top left : X = 16 Y = 600
Took 11 samples...
Top right : X = 0 Y = 600
Took 10 samples...
Bot right : X = 0 Y = 600
Took 8 samples...
Bot left : X = 0 Y = 600
Took 18 samples...
Center : X = 0 Y = 600
ts_calibrate: determinant is too small -- 0.000000
Calibration failed.
Sometimes, when it skips some calibration corners, the file is properly generated but of course the parameters are wrong.
So I'm stuck. is there an alternative to generate this pointercal config file ? to calibrate this screen ?
I've done some search on this forum and abroad without finding the right calibration parameters.
any idea to solve that problem ?
Thank you and happy new year to all !
Thomas
PS: i tried this touchsreen on Standard Raspbian desktop OS and it works like a charm without any config except config.txt