From f331c9f86dea0415c200d23bdfeccc1b8a895aea Mon Sep 17 00:00:00 2001
From: Stefan Kalscheuer <stefan@stklcode.de>
Date: Tue, 30 Jun 2015 08:21:41 +0000
Subject: [PATCH] Coffee wish implemented with violet led indicator

---
 main.c | 11 ++++++++++-
 main.h |  3 +++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/main.c b/main.c
index 7fd6af1..0632e1b 100644
--- a/main.c
+++ b/main.c
@@ -84,6 +84,9 @@ int main (void)
         if (make_coffee != 1)
           make_coffee = 3;                              // set coffee flag to 3 (1 coffee) else
       }
+      else if(COFFEE_WISH) {                            // Save coffee wish
+        make_coffee = 3;
+      }
     }
 
     else if (button_1_cup_counter < BUTTON_THRESHOLD
@@ -104,6 +107,9 @@ int main (void)
         if (make_coffee != 2)
           make_coffee = 4;                              //	set coffee flag to 4 (2 coffee) else
       }
+      else if(COFFEE_WISH) {                            // Save coffee wish
+        make_coffee = 4;
+      }
     }
 
     if (water)                                          // water OK:
@@ -186,7 +192,10 @@ int main (void)
       else                                            // temperature too low:
       {
         clear_bit(TRIAC_BOILER_w, TRIAC_BOILER_pin);  //	boiler on
-        led = RED_BLINK;                              // set red LED blink
+        if (make_coffee > 0)                          // set red/blue LED blink if coffee wish is saved
+          led = VIOLET_BLINK;
+        else                                          // set red LED blink if no coffee wish is saved
+          led = RED_BLINK;
       }
     }
     else                                              // water too low:
diff --git a/main.h b/main.h
index fa5607e..0535ec3 100644
--- a/main.h
+++ b/main.h
@@ -15,6 +15,7 @@
 #define TIME_1_COFFEE         26
 #define TIME_2_COFFEE         52
 #define OPERATING_TEMPERATURE 125   // ADC threshold for water temperature
+#define COFFEE_WISH           0     // save coffee wish while heating up
 /*
  *******************
  */
@@ -103,6 +104,8 @@
 #define BLUE_BLINK          0b00100000
 #define ORANGE              0b00000101
 #define ORANGE_BLINK        0b00001010
+#define VIOLET              0b00010001
+#define VIOLET_BLINK        0b00100010
 
                                       // prototypes:
 void init ();                         //  initialization