Add active buzzer test with SoftSPI touch and LVGL.

GPIO22 digital on/off toggle (default off) and flashable firmware/cyd package. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-10-23 13:25:19 +08:00
commit d71ee19edd
23 changed files with 1769 additions and 0 deletions
--- a/src/touch.cpp
+++ b/src/touch.cpp
@@ -0,0 +1,125 @@
+#include "touch.h"
+#include "pins.h"
+
+#include <Arduino.h>
+
+/**
+ * SoftSPI XPT2046
+ * BL↔TR 是矩形主对角线镜像（XY 对调），不是 180°（180° 会搞成 TL↔BR）。
+ * 先按 rot2 得到旧 UI，再做对角修正，反变换喂给 LVGL 270。
+ */
+
+int16_t g_dbg_phys_x = -1;
+int16_t g_dbg_phys_y = -1;
+int16_t g_dbg_logic_x = -1;
+int16_t g_dbg_logic_y = -1;
+bool g_dbg_touch_down = false;
+
+static void soft_write(uint8_t data) {
+  for (int i = 7; i >= 0; --i) {
+    digitalWrite(CYD_TOUCH_MOSI, (data >> i) & 1);
+    digitalWrite(CYD_TOUCH_CLK, HIGH);
+    delayMicroseconds(2);
+    digitalWrite(CYD_TOUCH_CLK, LOW);
+    delayMicroseconds(2);
+  }
+}
+
+static uint16_t soft_read12() {
+  uint16_t v = 0;
+  digitalWrite(CYD_TOUCH_CLK, HIGH);
+  delayMicroseconds(2);
+  digitalWrite(CYD_TOUCH_CLK, LOW);
+  delayMicroseconds(2);
+  for (int i = 0; i < 12; ++i) {
+    digitalWrite(CYD_TOUCH_CLK, HIGH);
+    delayMicroseconds(2);
+    v = (uint16_t)((v << 1) | (digitalRead(CYD_TOUCH_MISO) ? 1u : 0u));
+    digitalWrite(CYD_TOUCH_CLK, LOW);
+    delayMicroseconds(2);
+  }
+  return v;
+}
+
+static uint16_t xpt_read(uint8_t cmd) {
+  digitalWrite(CYD_TOUCH_CS, LOW);
+  soft_write(cmd);
+  uint16_t v = soft_read12();
+  digitalWrite(CYD_TOUCH_CS, HIGH);
+  return v;
+}
+
+static int16_t clampi(int32_t v, int32_t lo, int32_t hi) {
+  if (v < lo) {
+    return (int16_t)lo;
+  }
+  if (v > hi) {
+    return (int16_t)hi;
+  }
+  return (int16_t)v;
+}
+
+void touch_init() {
+  pinMode(CYD_TOUCH_CS, OUTPUT);
+  pinMode(CYD_TOUCH_CLK, OUTPUT);
+  pinMode(CYD_TOUCH_MOSI, OUTPUT);
+  pinMode(CYD_TOUCH_MISO, INPUT);
+  pinMode(CYD_TOUCH_IRQ, INPUT);
+  digitalWrite(CYD_TOUCH_CS, HIGH);
+  digitalWrite(CYD_TOUCH_CLK, LOW);
+  Serial.println("Touch: SoftSPI + diagonal fix (BL/TR)");
+}
+
+void touch_read_cb(lv_indev_t * /*indev*/, lv_indev_data_t *data) {
+  uint16_t adc_x = xpt_read(0x90);
+  uint16_t adc_y = xpt_read(0xD0);
+  adc_x = (uint16_t)((adc_x + xpt_read(0x90)) / 2);
+  adc_y = (uint16_t)((adc_y + xpt_read(0xD0)) / 2);
+
+  const bool irq = (digitalRead(CYD_TOUCH_IRQ) == LOW);
+  const bool in_range =
+      (adc_x > 80 && adc_x < 4000 && adc_y > 80 && adc_y < 4000);
+
+  if (!in_range || (!irq && (adc_x < 200 || adc_y < 200))) {
+    data->state = LV_INDEV_STATE_RELEASED;
+    g_dbg_touch_down = false;
+    return;
+  }
+
+  const int16_t p_x = (int16_t)adc_x;
+  const int16_t p_y = (int16_t)(4095 - adc_y);
+
+  int16_t x = map(p_x, 200, 3700, 1, SCREEN_WIDTH);
+  int16_t y = map(p_y, 240, 3800, 1, SCREEN_HEIGHT);
+  x = clampi(x, 0, SCREEN_WIDTH - 1);
+  y = clampi(y, 0, SCREEN_HEIGHT - 1);
+
+  // 旧 UI（LVGL270）：(y, 239-x) — 该空间里 BL↔TR，做主对角线镜像
+  // (ux,uy) -> (uy*(319/239), ux*(239/319))
+  const int32_t old_ux = y;
+  const int32_t old_uy = (SCREEN_WIDTH - 1) - x;
+  int16_t ui_x = clampi((old_uy * (UI_HOR_RES - 1)) / (UI_VER_RES - 1), 0,
+                        UI_HOR_RES - 1);
+  int16_t ui_y = clampi((old_ux * (UI_VER_RES - 1)) / (UI_HOR_RES - 1), 0,
+                        UI_VER_RES - 1);
+
+  // 反变换喂 LVGL，使最终落在 (ui_x, ui_y)
+  const int16_t feed_x = (int16_t)((SCREEN_WIDTH - 1) - ui_y);
+  const int16_t feed_y = ui_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 > 80) {
+    last_log = millis();
+    Serial.printf("Touch UI(%d,%d)\n", ui_x, ui_y);
+  }
+
+  data->point.x = feed_x;
+  data->point.y = feed_y;
+  data->state = LV_INDEV_STATE_PRESSED;
+}