From 36b58f99c99a9d59a914a7db8f4a075ea154cc9f Mon Sep 17 00:00:00 2001
From: Stefan Koelle <stefan.koelle@gmail.com>
Date: Sun, 2 Aug 2026 12:51:44 +0200
Subject: [PATCH] correct pins

---
 include/board_pins.h          | 34 +++++++++++++++-------------------
 src/display/display_setup.cpp |  2 +-
 2 files changed, 16 insertions(+), 20 deletions(-)

diff --git a/include/board_pins.h b/include/board_pins.h
index c22546d..7da3b74 100644
--- a/include/board_pins.h
+++ b/include/board_pins.h
@@ -1,29 +1,25 @@
 #pragma once
 
-// WT32-SC01 Plus pin assignments.
-// Reference values per WT32-SC01 Plus documentation (ESP32-S3-WROVER,
-// ST7796 8-bit parallel + FT6336U capacitive touch). Verify against the
-// concrete board revision before production use (see SPEC.md section 11).
-//
-// These constants are consumed by src/display/display_setup.cpp only.
+// WT32-SC01 Plus pin assignments (ESP32-S3, ST7796 8-bit parallel, FT6336U touch).
+// Verified against WT32-SC01 Plus schematic.
 
 namespace BoardPins {
 
 // --- ST7796 8-bit parallel RGB/8080 interface ---
-constexpr int LCD_D0 = 8;
-constexpr int LCD_D1 = 3;
-constexpr int LCD_D2 = 46;
-constexpr int LCD_D3 = 9;
-constexpr int LCD_D4 = 1;
-constexpr int LCD_D5 = 5;
-constexpr int LCD_D6 = 6;
-constexpr int LCD_D7 = 7;
+constexpr int LCD_D0 = 9;
+constexpr int LCD_D1 = 46;
+constexpr int LCD_D2 = 3;
+constexpr int LCD_D3 = 8;
+constexpr int LCD_D4 = 18;
+constexpr int LCD_D5 = 17;
+constexpr int LCD_D6 = 16;
+constexpr int LCD_D7 = 15;
 
-constexpr int LCD_WR = 39;
-constexpr int LCD_RD = 38;
-constexpr int LCD_DC = 40;
-constexpr int LCD_CS = 41;
-constexpr int LCD_RST = 42;
+constexpr int LCD_WR = 47;
+constexpr int LCD_RD = -1;   // not wired
+constexpr int LCD_DC = 0;    // RS/DC
+constexpr int LCD_CS = -1;   // not wired
+constexpr int LCD_RST = 4;
 constexpr int LCD_BACKLIGHT = 2;
 
 // --- FT6336U capacitive touch (I2C) ---
diff --git a/src/display/display_setup.cpp b/src/display/display_setup.cpp
index f2fd906..86af777 100644
--- a/src/display/display_setup.cpp
+++ b/src/display/display_setup.cpp
@@ -23,7 +23,7 @@ public:
         // 8-bit parallel i80/8080 bus (ESP32-S3 variant).
         {
             auto cfg = _bus_instance.config();
-            cfg.freq_write = 16000000;
+            cfg.freq_write = 20000000;
             cfg.freq_read  =  8000000;
             cfg.pin_wr = BoardPins::LCD_WR;
             cfg.pin_rd = BoardPins::LCD_RD;