From dc30e2ac6322f72d693744c8f1eb37ce05d40f69 Mon Sep 17 00:00:00 2001
From: prenticedavid <david.prentice@farming.co.uk>
Date: Sat, 21 Apr 2018 16:30:19 +0100
Subject: [PATCH] NL must be correct for vertical scroll

---
 MCUFRIEND_kbv.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/MCUFRIEND_kbv.cpp b/MCUFRIEND_kbv.cpp
index bd9d827..5d65909 100644
--- a/MCUFRIEND_kbv.cpp
+++ b/MCUFRIEND_kbv.cpp
@@ -427,7 +427,8 @@ void MCUFRIEND_kbv::setRotation(uint8_t r)
             _MC = 0x20, _MP = 0x21, _MW = 0x22;
             GS = (val & 0x80) ? (1 << 9) : 0;
             SS_v = (val & 0x40) ? (1 << 8) : 0;
-            WriteCmdData(0x01, GS | SS_v | 0x0028);       // set Driver Output Control
+            // S6D0139 requires NL = 0x27,  S6D0154 NL = 0x28
+            WriteCmdData(0x01, GS | SS_v | ((_lcd_ID == 0x0139) ? 0x27 : 0x28));
             goto common_ORG;
 #endif
         case 0x5420: