From eb734b173dcffe5dfe804e59c8bb989a36872aa8 Mon Sep 17 00:00:00 2001
From: Markus Hitter <mah@jump-ing.de>
Date: Sun, 24 Jul 2011 19:50:44 +0200
Subject: [PATCH] power_on(): add a delay when powering on.

This allows the PSU to come up before we get step losses if
we step immediately.
---
 pinio.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/pinio.c b/pinio.c
index cc37678..22cc1ed 100644
--- a/pinio.c
+++ b/pinio.c
@@ -1,11 +1,18 @@
 #include	"pinio.h"
+#include	"delay.h"
+
+static char ps_is_on = 0;
 
 void power_on() {
 
-	#ifdef	PS_ON_PIN
-		WRITE(PS_ON_PIN, 0);
-		SET_OUTPUT(PS_ON_PIN);
-	#endif
+	if (ps_is_on == 0) {
+		#ifdef	PS_ON_PIN
+			WRITE(PS_ON_PIN, 0);
+			SET_OUTPUT(PS_ON_PIN);
+			_delay_ms(500);
+		#endif
+		ps_is_on = 1;
+	}
 }
 
 void power_off() {
@@ -19,4 +26,6 @@ void power_off() {
 	#ifdef	PS_ON_PIN
 		SET_INPUT(PS_ON_PIN);
 	#endif
+
+	ps_is_on = 0;
 }