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by dmilton
Wed Oct 25, 2017 7:36 pm
Forum: Device Tree
Topic: Adding a 2nd w1 GPIO
Replies: 21
Views: 8736

Re: Adding a 2nd w1 GPIO

Interesting. The reason I'm asking is this: The facility we're building will have 20 (or so) pieces of similar equipment (called 'frames'), each with several 1-wire temperature sensors placed in the same relative position on each frame. Each frame is attached to its own Rpi, which is responsible for...
by dmilton
Wed Oct 25, 2017 2:04 pm
Forum: Device Tree
Topic: Adding a 2nd w1 GPIO
Replies: 21
Views: 8736

Re: Adding a 2nd w1 GPIO

Thanks, much appreciated, that should work! It does seem strange, though, that there isn't some configuration file someplace that identifies what is attached to which GPIO pin.
by dmilton
Wed Oct 25, 2017 2:40 am
Forum: Device Tree
Topic: Adding a 2nd w1 GPIO
Replies: 21
Views: 8736

Re: Adding a 2nd w1 GPIO

This works well! But two questions regarding the order of the bus master assignment: 1. As a previous post noted, the order of the w1 bus master assignment appears to be the reverse of the config.txt order. Is that ordering reliable? Or is it random? 2. With a given bus master, e.g., w1_bus_master2,...

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