I'm using PiCore 8.0 and am trying to get a 3.5" touchscreen working.
The OUtput already works thanks to the fbtft thread.
However I'm struggling with the ADS7846 Touchscreen support. I added
dtoverlay=ads7846,speed=1000000,penirq=17,swapxy=1just below dtparam=i2c=on,spi=on,i2s=on in /mnt/mmbclk0p1/config.txt, but there seem to be problems.
After Booting there is no new /dev/input device (in raspbian a new /dev/input/event? device was created).
dmesg | grep ads results:
tc@piCorePlayer:/mnt/mmcblk0p1$ dmesg | grep ads
[ 42.541341] ads7846: Unknown symbol hwmon_device_unregister (err 0)
[ 42.541411] ads7846: Unknown symbol hwmon_device_register_with_groups (err 0)
[ 49.948475] spi spi0.1: ads7846 spi0.1 1000kHz 8 bits mode=0x00
[ 50.553065] spi spi0.1: ads7846 spi0.1 1000kHz 8 bits mode=0x00
which does not look good to me. Can anybody help me where the problem is?