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Make the example code actually work.

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PR:		199440
Submitted by:	waitman@waitman.net
Reviewed by:	loos
MFC after:	1 week
This commit is contained in:
Christian Brueffer 2015-07-01 09:25:23 +00:00
parent 4079836c5e
commit b28dfe6570
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=284997
1 changed files with 3 additions and 1 deletions
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4
lib/libgpio/gpio.3
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@ -35,6 +35,7 @@
.Sh LIBRARY
.Lb libgpio
.Sh SYNOPSIS
.In sys/types.h
.In libgpio.h
.Ft "gpio_handle_t"
.Fn gpio_open "unsigned int unit"
@ -161,13 +162,14 @@ are wrappers around
The following example shows how to configure pin 16 as output and then
drive it high:
.Bd -literal
#include <sys/types.h>
#include <err.h>
#include <libgpio.h>
gpio_handle_t handle;
handle = gpio_open(0);
if (handle == GPIO_HANDLE_INVALID)
if (handle == GPIO_INVALID_HANDLE)
err(1, "gpio_open failed");
gpio_pin_output(handle, 16);
gpio_pin_high(handle, 16);