Increase the polling rate of the trackpad on the Framework 13

[Shiroudan]

I guess this may be possible to do through the EC, which initializes the I2C connection to the trackpad I believe.

Looking for datasheet for the PixArt PCT3854QR in touchpad module

I would assume there should be a way to read data coming from the touchpad module itself, but I think it’s hard to tell what is exactly going on without the data sheet. I bought breakout board for the 51 pin connector (Something like this) and connected the I2C pins / 5V / GND to Raspberry Pi. Using I2C dump I saw some data output from the touchpad, but again unsure what any of that means. I also saw CRImier’s input controller board but as far as I know that one also only works for the keyboard,…

Unfortunately, the datasheet is not available, so I’m not sure how to go around doing it.

For what it’s worth, my trackpad does not feel lagging with a 120 Hz monitor, although maybe my eye is less experienced.