working remoteControl via espNow

lib/LcdWrapper/LcdWrapper.cpp

@@ -18,14 +18,19 @@ LcdWrapper::LcdWrapper(LiquidCrystal_I2C* lcd) {
 }
 
 void LcdWrapper::loop() {
-    if (this->changed) {
-        this->lcd->clear();
-        for (uint8_t i = 0; i < DISPLAY_WRAPPER_LINES; i++) {
-            this->lcd->setCursor(0, i);
-            this->lcd->print(this->data[i]);
-        }
-        this->changed = false;
+    if (!this->changed)
+        return;
+
+    this->lcd->clear();
+    for (uint8_t i = 0; i < DISPLAY_WRAPPER_LINES; i++) {
+        this->lcd->setCursor(0, i);
+        this->lcd->print(this->data[i]);
     }
+    
+    if (this->callback)
+        this->callback(this->data, DISPLAY_WRAPPER_LINES, DISPLAY_WRAPPER_ROWS);
+
+    this->changed = false;
 }
 
 void LcdWrapper::clear() {

lib/LcdWrapper/LcdWrapper.h

@@ -19,6 +19,8 @@
 #define DISPLAY_WRAPPER_ROWS 16
 #define DISPLAY_WRAPPER_LINES 2
 
+typedef void (*LcdWrapperCallback) (const char data[][DISPLAY_WRAPPER_ROWS], uint8_t lines, uint8_t rows);
+
 /**
  * @brief A class for the Menu class to print information 
  * 
@@ -54,6 +56,7 @@ class LcdWrapper : public DisplayWrapper {
          * @param line 
          */
         void setCursor(uint8_t row, uint8_t line) override;
+        void setCallback(LcdWrapperCallback callback) { this->callback = callback; }
 
         /**
          * @brief Save the data to be printed
@@ -65,6 +68,7 @@ class LcdWrapper : public DisplayWrapper {
 
     private:
         LiquidCrystal_I2C* lcd;
+        LcdWrapperCallback callback = nullptr;
         char data[DISPLAY_WRAPPER_LINES][DISPLAY_WRAPPER_ROWS];
 
         uint8_t cursorRow = 0;