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Re: bin/52219: Example included in gpio(3lua) incorrect
The following reply was made to PR bin/52219; it has been noted by GNATS.
From: Sevan Janiyan <venture37%geeklan.co.uk@localhost>
Subject: Re: bin/52219: Example included in gpio(3lua) incorrect
Date: Mon, 8 May 2017 09:55:59 +0100
On 08/05/2017 08:00, Marc Balmer wrote:
> > The reason is that gpio.read is expecting the configured gpio pin to read from whereas the example passes the value of number of configured pins on the system, minus one.
> No, it enumerates all pins and reads them. Are you GPIO pins set to
> input, i.e. at they readable? What happens when you try to read them
> out using gpioctl?
My gpio.conf has
gpio1 21 set out USR0
gpio1 22 set out USR1
gpio1 23 set out USR2
gpio1 24 set out USR3
the following works
print('pin ' .. n .. ': ' .. gpiodev:read(21))
the following (as per sample script) doesn't
print('pin ' .. n .. ': ' .. gpiodev:read(n - 1))
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