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-rw-r--r--lib/libgpio/gpio.34
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/libgpio/gpio.3 b/lib/libgpio/gpio.3
index 70f6b38c0622..27925f09108d 100644
--- a/lib/libgpio/gpio.3
+++ b/lib/libgpio/gpio.3
@@ -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);