[arm-allstar] Using the gpio command with Allstar on the Raspberry Pi 2

[Doug Crompton]

Neil,

They were proposed pins to use. They are NOT implemented in the code. The document is mainly for the user to become familiar with using GPIO for their own applications.
73 Doug
WA3DSP
http://www.crompton.com/hamradio


From: k8it at cac.net
To: arm-allstar at hamvoip.org
Date: Sun, 7 Feb 2016 15:47:07 -0500
Subject: [arm-allstar] Using the gpio command with Allstar on the Raspberry	Pi 2








I have been experimenting with GPIO on the RPI2
 
I am using Doug's document for the instructions
 
I have a question.
 
Since Asterisk is initializing the URI for PTT, COS, and audio in / out, 
the document suggests that GPIO 19 and GPIO 26 should represent COS and PTT 
respectively.
However from the Linux prompt
read gpio26 always returns a zero
and read gpio19 seems to return nothing
 
I am assuming (most likely incorrectly) that the following are true
1. Asterisk has allready defined gpio19 as an input and GPIO26 as an 
output
2. That it is possible just to issue an READ GPIO19 or READ GPIO26 COMMAND 
AT THE lINUX PROMPT     WITHOUT ANY FURTHER SETUP SINCE 
aSTERISK HAS ALLREADY DEFINED THESE PINS
 
sO WHAT AM I DOING WRONG?
 
 
 
Thanks
73 Neil Sablatzky  K8IT
Allstar Node 41838 
KITLINK
Allstar Node 42087 KITLINK HUB
IRLP Node exp0068
Echolink 
K8IT-L
WIRES-X K8IT 11479 Room 21479



 

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