From 205d115002a18c7c9ccd8dc2aed388196772fadb Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Sat, 17 Sep 2011 14:54:39 +0200
Subject: Signal an optional ALARM_PIN when reaching MAXTEMP

Alarm signal can be dismissed by hard-resetting the board or by sending
a M42 P23 S0 command (where 23 is the ALARM_PIN)
---
 Sprinter/Sprinter.pde | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'Sprinter/Sprinter.pde')

diff --git a/Sprinter/Sprinter.pde b/Sprinter/Sprinter.pde
index cc1434f..f04e374 100644
--- a/Sprinter/Sprinter.pde
+++ b/Sprinter/Sprinter.pde
@@ -302,6 +302,12 @@ void setup()
     SET_OUTPUT(FAN_PIN);
   #endif
   
+  //Initialize Alarm Pin
+  #if (ALARM_PIN > -1) 
+    SET_OUTPUT(ALARM_PIN);
+    WRITE(ALARM_PIN,LOW);
+  #endif
+  
 //Initialize Step Pins
   #if (X_STEP_PIN > -1) 
     SET_OUTPUT(X_STEP_PIN);
@@ -1465,6 +1471,9 @@ void manage_heater()
   #ifdef MAXTEMP
     if(current_raw >= maxttemp) {
         target_raw = 0;
+        #if (ALARM_PIN > -1) 
+          WRITE(ALARM_PIN,HIGH);
+        #endif
     }
   #endif
   #if (TEMP_0_PIN > -1) || defined (HEATER_USES_MAX6675) || defined (HEATER_USES_AD595)
-- 
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