From dd92c79339bcc19a4ea403ce1f03e75c8f6b8dd5 Mon Sep 17 00:00:00 2001
From: Josh Schroeder <josh.schroeder314@gmail.com>
Date: Wed, 4 Nov 2020 22:15:25 -0500
Subject: [PATCH] Wiring warning for ANET_FULL_GRAPHICS_LCD on SKR 1.4 (#20011)
---
Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h | 22 +++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h b/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h
index 2b8682aac7b..2fcf42d9bb6 100644
--- a/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h
+++ b/Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h
@@ -234,7 +234,29 @@
*/
#if HAS_WIRED_LCD
#if ENABLED(ANET_FULL_GRAPHICS_LCD)
+ #error "CAUTION! ANET_FULL_GRAPHICS_LCD requires wiring modifications. See 'pins_BTT_SKR_V1_4.h' for details. Comment out this line to continue."
+ /**
+ * 1. Cut the tab off the LCD connector so it can be plugged into the "EXP1" connector the other way.
+ * 2. Swap the LCD's +5V (Pin2) and GND (Pin1) wires. (This is the critical part!)
+ * 3. Rewire the CLK Signal (LCD Pin9) to LCD Pin7. (LCD Pin9 remains open because this pin is open drain.)
+ * 4. A wire is needed to connect the Reset switch at J3 (LCD Pin7) to EXP2 (Pin3) on the board.
+ *
+ * !!! If you are unsure, ask for help! Your motherboard may be damaged in some circumstances !!!
+ *
+ * The ANET_FULL_GRAPHICS_LCD connector plug:
+ *
+ * BEFORE AFTER
+ * _____ _____
+ * GND 1 | 1 2 | 2 5V 5V 1 | 1 2 | 2 GND
+ * CS 3 | 3 4 | 4 BTN_EN2 CS 3 | 3 4 | 4 BTN_EN2
+ * SID 5 | 5 6 6 BTN_EN1 SID 5 | 5 6 6 BTN_EN1
+ * open 7 | 7 8 | 8 BTN_ENC CLK 7 | 7 8 | 8 BTN_ENC
+ * CLK 9 | 9 10| 10 Beeper open 9 | 9 10| 10 Beeper
+ * ----- -----
+ * LCD LCD
+ */
+
#define LCD_PINS_RS P1_23
#define BTN_EN1 P1_20