Restore landscape display and use RNT SoftSPI touch map.

Revert 320x240 create that garbled the panel; map touch to 240x320 like Random Nerd Tutorials.

Co-authored-by: Cursor <cursoragent@cursor.com>

CHANGELOG.md

@@ -1,12 +1,14 @@
 # Changelog
 
-## 2026-10-17 — Touch = draw coords (CYD LVGL9 official)
+## 2026-10-17 — Restore landscape + RNT touch map
 
-- Root cause: `LV_DISPLAY_ROTATION_270` double-transforms touch vs TFT_eSPI
-  (lvgl#7841 / CYD community).
-- Fix per witnessmenow LVGL9 example: create display 320x240, rotation 0;
-  SoftSPI `setRotation(3)` map straight into the same 320x240 space.
-- Red touch cursor follows reported point for visual check.
+- Revert create(320x240) — caused 花屏; keep 240x320 + ROTATION_270 landscape.
+- Touch = Random Nerd Tutorials recipe: SoftSPI rot2, map to 240x320, feed LVGL
+  directly (no extra inverse). Red cursor shows estimated UI point.
+
+## 2026-10-17 — Touch = draw coords (CYD LVGL9 official) [reverted]
+
+- create(320x240) without LVGL rot caused 花屏 on this panel; superseded.
 
 ## 2026-10-17 — SoftSPI touch + LVGL inverse (fix mux)
 

firmware/cyd/VERSION.txt

@@ -1,5 +1,5 @@
 name: CYD TF card + touch speaker (cyd)
-git: 3768e54
+git: 1381c22
 date: 2026-10-17
 board: ESP32-2432S028R (ILI9341)
 features: TF/SD info, SoftSPI touch, GPIO26 speaker
@@ -12,5 +12,5 @@ offsets:
 sha256:
   bootloader.bin  3D234A7471F67B013686DABD4DEE7C1FA915C9928463616A94BC9297ACF1ABF8
   boot_app0.bin   F94C5D786A7A8FAB06AC5D10E33BF37711A6697636DC037559EA19CC410A17F0
-  firmware.bin    DC7BD1738756078B002918725F5CE6C6B349ADBF8E9ADC0A209668D07C0F00ED
+  firmware.bin    7C632F8D033997F18F39056F321011B2DB7D0B0FA64F14FED269EB70EE86C814
   partitions.bin  148B959CBFF1C38AA8E1D5C0BA9D612C54997B945E56A63F41223EEF650653A1

include/pins.h

@@ -21,8 +21,8 @@
 #define CYD_TOUCH_CLK  25
 #define CYD_TOUCH_CS   33
 
-// 横屏 UI（与 witnessmenow CYD LVGL9 官方例程一致：直接 320x240，不用 LVGL 二次旋转）
-#define SCREEN_WIDTH  320
-#define SCREEN_HEIGHT 240
-#define UI_HOR_RES    SCREEN_WIDTH
-#define UI_VER_RES    SCREEN_HEIGHT
+// 与 Random Nerd Tutorials / temperature 一致：物理竖屏 + LVGL 270 得横屏
+#define SCREEN_WIDTH  240
+#define SCREEN_HEIGHT 320
+#define UI_HOR_RES    320
+#define UI_VER_RES    240

src/main.cpp

@@ -45,10 +45,11 @@ void setup() {
 
   lv_init();
 
-  // 官方 CYD LVGL9：直接 320x240，不用 LV_DISPLAY_ROTATION_*（避免触控二次变换错位）
-  // https://github.com/witnessmenow/ESP32-Cheap-Yellow-Display/tree/main/Examples/LVGL9
+  // RNT / temperature：240x320 + ROTATION_270 → 横屏（勿改成 create 320x240，会花屏）
+  // https://randomnerdtutorials.com/lvgl-cheap-yellow-display-esp32-2432s028r/
   lv_display_t *disp =
       lv_tft_espi_create(SCREEN_WIDTH, SCREEN_HEIGHT, draw_buf, sizeof(draw_buf));
+  lv_display_set_rotation(disp, LV_DISPLAY_ROTATION_270);
 
   lv_indev_t *indev = lv_indev_create();
   lv_indev_set_type(indev, LV_INDEV_TYPE_POINTER);

src/touch.cpp

@@ -4,12 +4,15 @@
 #include <Arduino.h>
 
 /**
- * SoftSPI XPT2046 — 与 SD 分脚
+ * SoftSPI XPT2046（SD 占 VSPI，触摸必须 SoftSPI）
  *
- * 对齐官方 CYD LVGL9 例程（witnessmenow）：
- *   - 显示直接建为 320x240，LVGL rotation=0（触控不再被二次变换）
- *   - touch setRotation(3) + map 到 SCREEN_WIDTH/HEIGHT
- * 参考：https://github.com/witnessmenow/ESP32-Cheap-Yellow-Display/blob/main/Examples/LVGL9/
+ * 现成方案 — Random Nerd Tutorials CYD + LVGL：
+ *   create(240,320) + LV_DISPLAY_ROTATION_270
+ *   touchscreen.setRotation(2)
+ *   x = map(p.x, 200, 3700, 1, 240)
+ *   y = map(p.y, 240, 3800, 1, 320)
+ *   直接喂给 LVGL（由 LVGL 做旋转，不要再反变换 / 不要建 320x240）
+ * https://randomnerdtutorials.com/lvgl-cheap-yellow-display-esp32-2432s028r/
  */
 
 int16_t g_dbg_phys_x = -1;
@@ -60,7 +63,7 @@ void touch_init() {
   pinMode(CYD_TOUCH_IRQ, INPUT);
   digitalWrite(CYD_TOUCH_CS, HIGH);
   digitalWrite(CYD_TOUCH_CLK, LOW);
-  Serial.println("Touch: SoftSPI rot3 map 320x240 (no LVGL rot)");
+  Serial.println("Touch: RNT SoftSPI rot2 map 240x320");
 }
 
 void touch_read_cb(lv_indev_t * /*indev*/, lv_indev_data_t *data) {
@@ -79,11 +82,11 @@ void touch_read_cb(lv_indev_t * /*indev*/, lv_indev_data_t *data) {
     return;
   }
 
-  // XPT2046_Touchscreen setRotation(3)：
-  //   xraw = 4095 - Y_sample, yraw = 4095 - X_sample
-  const int16_t p_x = (int16_t)(4095 - adc_y);
-  const int16_t p_y = (int16_t)(4095 - adc_x);
+  // XPT2046_Touchscreen setRotation(2)
+  const int16_t p_x = (int16_t)adc_x;
+  const int16_t p_y = (int16_t)(4095 - adc_y);
 
+  // RNT：映射到物理 240x320，交给 LVGL ROTATION_270
   int16_t x = map(p_x, 200, 3700, 1, SCREEN_WIDTH);
   int16_t y = map(p_y, 240, 3800, 1, SCREEN_HEIGHT);
 
@@ -100,17 +103,21 @@ void touch_read_cb(lv_indev_t * /*indev*/, lv_indev_data_t *data) {
     y = SCREEN_HEIGHT - 1;
   }
 
-  g_dbg_phys_x = p_x;
-  g_dbg_phys_y = p_y;
-  g_dbg_logic_x = x;
-  g_dbg_logic_y = y;
+  // 预估 LVGL 270 后的 UI 坐标（光标用）：(y, 239-x)
+  const int16_t ui_x = y;
+  const int16_t ui_y = (int16_t)((SCREEN_WIDTH - 1) - x);
+
+  g_dbg_phys_x = x;
+  g_dbg_phys_y = y;
+  g_dbg_logic_x = ui_x;
+  g_dbg_logic_y = ui_y;
   g_dbg_touch_down = true;
 
   static uint32_t last_log = 0;
   if (millis() - last_log > 120) {
     last_log = millis();
-    Serial.printf("Touch adc(%u,%u) p(%d,%d) -> (%d,%d)\n", adc_x, adc_y, p_x,
-                  p_y, x, y);
+    Serial.printf("Touch p(%d,%d) feed(%d,%d) UI~(%d,%d)\n", p_x, p_y, x, y,
+                  ui_x, ui_y);
   }
 
   data->point.x = x;