Differences

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--- zoncoffee_pid_controller [2014/11/04 18:27] – [Libraries] Ethan Zonca
+++ zoncoffee_pid_controller [2014/11/04 18:35] – [LCD support] Ethan Zonca
@@ Line 30: / Line 30: @@
 The firmware comes pre-configured for the HD44780 parallel LCD display. To use a SparkFun serial LCD, you will need to change a couple configuration options:
-In the Arduino sketch, browse to options.h
+In the Arduino sketch, browse to ''options.h''
 //#define LCDSF      // Use SparkFun serial lcd
@@ Line 38: / Line 38: @@
 Uncomment the LCDSF line and comment out the LCDHD line. Now your SparkFun LCD should work properly.
+**There seems to be a bug in the Arduino IDE when switching between LCDs. If you change the selected display in ''options.h'' and get a ton of compilation errors, change the order of these two blocks in zoncoffee.ino (for example):**
+Change this:
+// Setup LCD
+#ifdef LCDHD
+   #include <LiquidCrystal.h>
+   LiquidCrystal lcd(A5,A4,A3,A2,A1,A0);
+#endif
+#ifdef LCDSF
+   #include <SLCD.h>
+   SLCD sflcd = SLCD(LCDROWS, LCDCOLS);
+#endif
+To this:
+// Setup LCD
+#ifdef LCDSF
+   #include <SLCD.h>
+   SLCD sflcd = SLCD(LCDROWS, LCDCOLS);
+#endif
+#ifdef LCDHD
+   #include <LiquidCrystal.h>
+   LiquidCrystal lcd(A5,A4,A3,A2,A1,A0);
+#endif
+...or the other way around.