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by ppelleti
Sat Mar 30, 2019 5:02 pm
Forum: Device Tree
Topic: beginner question: enabling I2C in Device Tree
Replies: 3
Views: 3043

Re: beginner question: enabling I2C in Device Tree

Thanks! I will give that a try.

One more question: how can I set the baud rate for the i2c? (The equivalent of "i2c_arm_baudrate=400000" in config.txt)
by ppelleti
Thu Mar 28, 2019 6:28 pm
Forum: Device Tree
Topic: beginner question: enabling I2C in Device Tree
Replies: 3
Views: 3043

beginner question: enabling I2C in Device Tree

I have built a simple HAT which has a couple of GPIO expanders on the I2C bus. I'm trying to figure out what to put in the EEPROM, but the device tree in particular is hard to figure out. I'm going to access the GPIO expanders from userspace via /dev/i2c-1, so what I need is for /dev/i2c-1 to be ena...
by ppelleti
Fri Jan 04, 2019 4:30 am
Forum: Troubleshooting
Topic: Why does apt-get update tell me this?
Replies: 30
Views: 20570

Re: Why does apt-get update tell me this?

As for the Raspbian archive issue - as I said initially, it would be a good idea to prod the operator of the Raspbian archive to implement a secure HTTPS alternative to avoid this kind of issue by allowing use of apt-transport-https . I filed a bug for this in the Raspbian bug tracker, and it sound...
by ppelleti
Sun Jun 25, 2017 6:30 pm
Forum: Beginners
Topic: Accessing the Pi's CUPS web interface from another computer
Replies: 4
Views: 4648

Re: Accessing the Pi's CUPS web interface from another compu

But have you tried accessing the web server with the ip in order to rule out a name resolution problem? Fascinating... although pi3.lan and pi3.local both resolve to the same IP address (fd42:f8e7:b196::d87), pi3.lan returns a status of "400 Bad Request", while pi3.local returns a status of "200 OK...
by ppelleti
Sat Jun 24, 2017 8:27 pm
Forum: Beginners
Topic: Accessing the Pi's CUPS web interface from another computer
Replies: 4
Views: 4648

Re: Accessing the Pi's CUPS web interface from another compu

notice that you are using two distinct domain names for the box. which one is it? maybe use the ip address instead, if you don't know. Or am I misundertanding your setup? It appears that you have a rpi with name .local but you are trying to access .lan. If you are using pi3.local then use http://pi...
by ppelleti
Sat Jun 24, 2017 3:55 pm
Forum: Beginners
Topic: Accessing the Pi's CUPS web interface from another computer
Replies: 4
Views: 4648

Accessing the Pi's CUPS web interface from another computer

I've installed CUPS on my Raspberry Pi 3, and I would like to access the CUPS web interface to configure my printer. My Pi is headless, so I'd like to do this from another computer. When I go to http://pi3.lan:631/ it simply says "Bad Request". I followed the instructions here to make the web interf...
by ppelleti
Mon Jun 12, 2017 11:11 pm
Forum: Advanced users
Topic: reading multitouch events from official RPi touchscreen
Replies: 1
Views: 1268

reading multitouch events from official RPi touchscreen

I have the official Raspberry Pi touchscreen , and I would like to read multitouch events from it. I've determined that my touchscreen is /dev/input/event2, and I've successfully read events from it. Through some experimentation, and using /usr/include/linux/input.h as a guide, I've mostly been able...

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