touch with abtraction working, SD is not working

lib/ft6336u/ft6336u.h

@@ -38,9 +38,15 @@ extern "C" {
 #define FT6336U_REG_P2_MISC         0x0E
 
 #define FT6336U_REG_CHIPID          0xA3  // Chip ID (should read 0x64)
+#define FT6336U_REG_G_MODE          0xA4  // Interrupt mode (polling or trigger)
+#define FT6336U_REG_POWER_MODE      0xA5  // Power mode
 #define FT6336U_REG_FIRMID          0xA6
 #define FT6336U_REG_VENDID          0xA8
 
+// G_MODE values
+#define FT6336U_G_MODE_POLLING      0x00
+#define FT6336U_G_MODE_TRIGGER      0x01
+
 // Touch event types
 #define FT6336U_EVENT_PRESS_DOWN    0x00
 #define FT6336U_EVENT_LIFT_UP       0x01
@@ -56,7 +62,8 @@ typedef struct {
     uint16_t y;
     uint8_t event;    // Press down, lift up, contact, no event
     uint8_t id;       // Touch point ID
-    uint8_t weight;   // Touch pressure/area
+    uint8_t weight;   // Touch pressure/area (0-255)
+    uint8_t misc;     // Touch area (0-15, upper nibble of MISC register)
 } ft6336u_touch_point_t;
 
 // Touch data structure
@@ -124,6 +131,25 @@ void ft6336u_set_interrupt_callback(void (*callback)(uint gpio, uint32_t events)
  */
 bool ft6336u_test_i2c(void);
 
+/**
+ * Set G_MODE register (polling vs trigger mode)
+ * @param mode 0 for polling mode, 1 for trigger mode
+ * @return true if successful
+ */
+bool ft6336u_set_g_mode(uint8_t mode);
+
+/**
+ * Get current G_MODE setting
+ * @return Current G_MODE value or 0xFF on error
+ */
+uint8_t ft6336u_get_g_mode(void);
+
+/**
+ * Get current power mode
+ * @return Current power mode or 0xFF on error  
+ */
+uint8_t ft6336u_get_power_mode(void);
+
 #ifdef __cplusplus
 }
 #endif