Hi Guys, There doesn’t seem to be a /dev/input/touchscreen device, is this normal? If I look at the devices I get this: cat /proc/bus/input/devices I: Bus=0018 Vendor=0416 Product=038f Version=1060 N: Name="Goodix Capacitive TouchScreen" P: Phys=input/ts S: Sysfs=/devices/platform/i2c@0/i2c-3/3-0…

Ok, using evtest on event0 I can see that the screen seems to work with multitouch, multiple ABS_MT_SLOT messages are logged. So the issue just seems to be that there is no /dev/input/touchscreen being created. Anyone any ideas why this might be? Cheers Andy

I asked a similar question earlier. It’s basically an OS issue. [image] Hyperpixel 4.0 touch. Multi-touch support? Support I see the new Hyperpixel 4.0 touch screen supports multi-touch. I have to ask though, can you use multi-touch on that screen in Raspbian? As in two f…

What application are you attempting to get multitouch input into? I find a vast majority of the Raspbian desktop doesn’t know or care about multi-touch, but Chromium has some crude support for pinch zoom that demonstrates it’s recognized. I don’t believe there’s any requirement for a /dev/input/tou…

Hi Guys, Thanks for the reply. I am not using the desktop, it is disabled. I am making a multi touch controller communicating over Open Sound Control. I have looked at trying to create a udev rule but failed hopelessly. Also tslib doesn’t recognise the event0 node as a valid touchscreen so I’m …

Hi Guys, I have written some code that allows 5 point multi touch, it can be found here: https://github.com/AndrewCapon/HyperPixel4TouchScreen Currently the X and Y axis dimensions from the touchscreen are reversed (480x800 instead of 800x480) this is at the driver level so I guess someone from Pi…

I have a Python library which accomplishes the same thing ( https://github.com/pimoroni/python-multitouch/blob/master/library/hp4ts.py ), and also ran into weirdness with the touch scaling being 480x800- this is hardware-level problem (since it’s a 480x800 portrait display that we’re rotating into lan…

Thanks for the info, I had tried changing the x and y in the overlay but it had no effect so I thought it was user error!

Hi Again. So I played around with the driver, I can change the width and height but all it sets are the maximum values, so the ranges stay the same but you get some negative values as well. Arghh There is also a flag “X2Y” at bit 3 of the I2C register 0x804d on the touchscreen this is set to 1 by …

Hyperpixel 4.0 - Multi touch?

Support

alphanumeric July 21, 2018, 8:32am 3

I asked a similar question earlier. It’s basically an OS issue.

Topic		Replies	Views
Hyperpixel 4.0 touch. Multi-touch support? Support	3	1870	July 18, 2018
Hyperpixel4 Multi-touch on Raspbian Support	4	1406	March 5, 2020
HyperPixel 4 - Touch screen dimensions are swapped Support	37	7145	February 5, 2019
How to use multitouch from Hyperpixel 4 in a C program? Support	0	298	July 24, 2020
Hyperpixel 4 - Touchscreen support Support	1	631	January 9, 2020

Hyperpixel 4.0 - Multi touch?

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