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by mgregg
Fri Dec 09, 2016 6:25 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: i2c-0 on RPi3 Where did you go
Replies: 10
Views: 2869

Re: i2c-0 on RPi3 Where did you go

I think bensimmo is probably correct - the very original rev1 PiB 256MB did bring out i2c-0 to pins 3&5 on the 26pin header and your old boards are probably rev1. That changed when production was brought back to the UK, so Sept 2012 . All subsequent boards (A+, B+, B2, B3, and Zero) have had i2c-1 ...
by mgregg
Thu Dec 08, 2016 5:37 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: i2c-0 on RPi3 Where did you go
Replies: 10
Views: 2869

Re: i2c-0 on RPi3 Where did you go

These hats were built for the raspberry pi 1. The headers only go up to 27 pins. I find it disappointing that the specification was changed in a way that breaks older hats. It also looks like they are trying to redefine what a "Hat" is. I'll look into bit banging the interface tonight. It's a RTC an...
by mgregg
Thu Dec 08, 2016 7:48 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: i2c-0 on RPi3 Where did you go
Replies: 10
Views: 2869

i2c-0 on RPi3 Where did you go

I have some hats here with i2c devices on them. I acquired a RPi 3, and promptly discovered I couldn't see them. I was able to set the following in my /boot/config.txt to enable something i2s related: dtparam=i2c_arm=on dtparam=i2c_vc=on I think that is what gave me the dev devices: $ ls /dev/i2c-* ...

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