Ajout prise en charge ESP-Display

include/DCCGenerator.h

@@ -19,8 +19,11 @@
 #include <Arduino.h>
 
 // Pin definitions for DCC output
-#define DCC_PIN_A 32    ///< DCC Signal A output pin
-#define DCC_PIN_B 33    ///< DCC Signal B output pin (inverted)
+// These share the same pins as the motor controller (LM18200)
+// In DCC mode: GPIO 18 = DCC Signal A, GPIO 19 = DCC Signal B
+// In DC mode:  GPIO 18 = PWM, GPIO 19 = Direction
+#define DCC_PIN_A 18    ///< DCC Signal A output pin (shared with MOTOR_PWM_PIN)
+#define DCC_PIN_B 19    ///< DCC Signal B output pin (shared with MOTOR_DIR_PIN)
 
 // DCC timing constants (microseconds) - NMRA standard
 #define DCC_ONE_BIT_TOTAL_DURATION_MAX 64     ///< Max duration for '1' bit
@@ -99,6 +102,37 @@ public:
      */
     bool isEnabled() { return enabled; }
     
+    // Programming Track Methods
+    
+    /**
+     * @brief Factory reset decoder (send CV8 = 8)
+     * @return true if successful
+     */
+    bool factoryReset();
+    
+    /**
+     * @brief Set decoder address
+     * @param address New address (1-10239)
+     * @return true if successful
+     */
+    bool setDecoderAddress(uint16_t address);
+    
+    /**
+     * @brief Read CV value from decoder
+     * @param cv CV number (1-1024)
+     * @param value Pointer to store read value
+     * @return true if successful
+     */
+    bool readCV(uint16_t cv, uint8_t* value);
+    
+    /**
+     * @brief Write CV value to decoder
+     * @param cv CV number (1-1024)
+     * @param value Value to write (0-255)
+     * @return true if successful
+     */
+    bool writeCV(uint16_t cv, uint8_t value);
+    
 private:
     bool enabled;               ///< DCC generator enabled flag
     uint16_t currentAddress;    ///< Current locomotive address
@@ -153,6 +187,40 @@ private:
      * @return XOR checksum byte
      */
     uint8_t calculateChecksum(uint8_t* data, uint8_t length);
+    
+    // Programming track helper methods
+    
+    /**
+     * @brief Send service mode packet (programming track)
+     * @param data Packet data bytes
+     * @param length Number of bytes
+     */
+    void sendServiceModePacket(uint8_t* data, uint8_t length);
+    
+    /**
+     * @brief Verify byte write on programming track
+     * @param cv CV number
+     * @param value Expected value
+     * @return true if ACK detected
+     */
+    bool verifyByte(uint16_t cv, uint8_t value);
+    
+    /**
+     * @brief Wait for ACK pulse from decoder
+     * @return true if ACK detected within timeout
+     */
+    bool waitForAck();
+    
+    /**
+     * @brief Calibrate ACS712 current sensor zero point
+     * 
+     * Reads current sensor with no load to establish baseline.
+     * Should be called during initialization.
+     */
+    void calibrateCurrentSensor();
 };
 
+// Programming track current sensing threshold (mA)
+#define PROG_ACK_CURRENT_THRESHOLD 60  ///< Minimum ACK current (mA)
+
 #endif