Instructions:

If you want to build your own kernel with the char device for multitouch enabled:

1. Apply the patch to the synaptics touchscreen driver file.
2. Build a new kernel with that modified version in it.
3. Build a new boot.img using that kernel
4. Flash the kernel on the G1 with the new boot.img

If you don’t want to build your own kernel:

• Just copy the boot.img over to your sdcard and then:
  flash_image boot /sdcard/boot.img

5. Reboot the phone

Once the phone reboots, you need to create the device node for it to be able to read it.

It’s easiest to do this from your machine:
adb shell busybox mknod /dev/tsout c 249 0

To test if this works, cat /dev/tsout on the device while you are touching the screen.

Next, build and install the multipoc app from your eclipse build, and install it.

The proof-of-concept app is EXTREMELY rough. If you make significant improvements to things, let me know and I’ll update the files here.

The multitouch proof-of-concept java is based heavily on Google’s fingerpaint program.