Sounds interesting, Dave! I don't know about prior work with 9front on iPhone, but 10 years ago Inferno was ported to Android:
https://defcon.org/images/defcon-20/dc-20-presentations/Floren/DEFCON-20-Floren-Hellaphone.pdf /emil On Mon, Mar 24, 2025 at 6:01 AM Dave MacFarlane via 9fans <9fans@9fans.net> wrote: > 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-Mb02cfe38dfcd31c4c1090385 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
