From 9b1ba1012af4dd8642590b74c70092ca501dadb9 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Mon, 11 Jul 2016 15:34:37 -0700
Subject: [PATCH] Support for VIKI2 with MKS Gen 1.3 / 1.4

---
 Marlin/pins_MKS_13.h | 86 ++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 84 insertions(+), 2 deletions(-)

diff --git a/Marlin/pins_MKS_13.h b/Marlin/pins_MKS_13.h
index 1b25653372..00da206445 100644
--- a/Marlin/pins_MKS_13.h
+++ b/Marlin/pins_MKS_13.h
@@ -37,6 +37,88 @@
 #define HEATER_1_PIN        7 // EXTRUDER 2 (-1 on RAMPS 1.4)
 
 #if ENABLED(VIKI2) || ENABLED(miniVIKI)
-  //#undef SD_DETECT_PIN
-  //#define SD_DETECT_PIN 49  // For easy adapter board
+  /**
+   * VIKI2 Has two groups of wires with...
+   *
+   * +Vin     + Input supply, requires 120ma for LCD and mSD card
+   * GND      Ground Pin
+   * MOSI     Data input for LCD and SD
+   * MISO     Data output for SD
+   * SCK      Clock for LCD and SD
+   * AO       Reg. Sel for LCD
+   * LCS      Chip Select for LCD
+   * SDCS     Chip Select for SD
+   * SDCD     Card Detect pin for SD
+   * ENCA     Encoder output A
+   * ENCB     Encoder output B
+   * ENCBTN   Encoder button switch
+   *
+   * BTN      Panel mounted button switch
+   * BUZZER   Piezo buzzer
+   * BLUE-LED Blue LED ring pin (3 to 5v, mosfet buffered)
+   * RED-LED  Red LED ring pin (3 to 5v, mosfet buffered)
+   *
+   * This configuration uses the following arrangement:
+   *
+   * EXP1 D37 = EN2   D35 = EN1     EXP2 D50 = MISO  D52 = SCK
+   *      D17 = BLUE  D16 = RED          D31 = ENC   D53 = SDCS
+   *      D23 = KILL  D25 = BUZZ         D33 = ---   D51 = MOSI
+   *      D27 = A0    D29 = LCS          D49 = SDCD  RST = ---
+   *      GND = GND   5V  = 5V           GND = ---   D41 = ---
+   */
+
+  #undef BTN_EN1
+  #undef BTN_EN2
+  #undef BTN_ENC
+  #undef DOGLCD_A0
+  #undef DOGLCD_CS
+  #undef SD_DETECT_PIN
+  #undef BEEPER_PIN
+  #undef KILL_PIN
+
+  //
+  // VIKI2 12-wire lead
+  //
+
+  // orange/white         SDCD
+  #define SD_DETECT_PIN   49
+
+  // white                ENCA
+  #define BTN_EN1         35
+
+  // green                ENCB
+  #define BTN_EN2         37
+
+  // purple               ENCBTN
+  #define BTN_ENC         31
+
+  // brown                A0
+  #define DOGLCD_A0       27
+
+  // green/white          LCS
+  #define DOGLCD_CS       29
+
+                       // 50    gray   MISO
+                       // 51    yellow MOSI
+                       // 52    orange SCK
+
+  // blue                 SDCS
+  //#define SDSS            53
+
+  //
+  // VIKI2 4-wire lead
+  //
+
+  // blue                 BTN
+  #define KILL_PIN        23
+
+  // green                BUZZER
+  #define BEEPER_PIN      25
+
+  // yellow               RED-LED
+  #define STAT_LED_RED    16
+
+  // white                BLUE-LED
+  #define STAT_LED_BLUE   17
+
 #endif