Hello all, I've been working on trying to get a pinephone kernel that can run 9front at https://github.com/driusan/9front-A64
I spent some time this weekend on the userspace getting readings off the i2c sensors. I've managed to use /dev/i2c*/ to get data from the: 1. Touch panel 2. Light/proximity sensor 3. Magnetometer 4. Accelerometer/gyroscope and now I want to expose the data in a filesystem before I put it online in some other repo. I've done some looking around but can't find any prior art for any of the above sensor types in Plan9. Does anyone know of any? I'd like to aim for compatibility if they exist. Assuming they don't, I'm looking for input if anyone has any strong opinions on what the interface should look like. Left to my own devices my plan is: 1. TouchPanel -- just write to /dev/mousein and treat touches as button 1. Since it's a userspace driver we can experiment with multitouch later. 2. Light/proximity sensor - create a /dev/lightsensor that returns light readings. A /dev/proximity read returns "close" or "notclose". No ctl files or scaling. 3. Magnetometer - /dev/compass blocks until there's enough data to calibrate. Reads return 3 values, x y z that are the raw (short int) readings. /dev/compassctl for calibrating sensitivity/etc. 4. Accel/gyroscope - /dev/accel returns 6 readings of the raw (also short) value ax ay az gx gy gz. /dev/accelctl for customizing sensitivity/etc. x/y/z aren't the raw sensor orientation, but normalized so that +y is the top of the screen, +x is to the right, and +z is towards the back of the phone. I've done the work to read the values but haven't done any work to expose it other than printing debugging to stdout, so I'm open to suggestions to other interfaces. - Dave ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T4d13b3016d2a2310-Mdce06ae0664328023dd4b496 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
