worked on SPI, fixed some bugs

adjusted LCD code
added code for INA3221
worked on UI

ext/lcd/ui/UILabel.h

@@ -11,7 +11,7 @@
 class UILabel : public UIElement {
 
 	std::string txt;
-
+	
 	Color cBackground = Color::fromRGB(255,255,255);
 	Color cText = Color::fromRGB(0,0,0);
 
@@ -21,18 +21,21 @@ public:
 		;
 	}
 
+	/** set the text to draw */
 	void setText(const std::string& txt) {
 		this->txt = txt;
 		setNeedsRedraw();
 	}
+	
+	
 
-	void draw(UIPainter& p) {
+	/** draw the label */
+	void draw(UIPainter& p) override {
 
-		p.setFG(cBackground);
-		p.fillRect(rect);
-
-		//const uint16_t txtW = fnt_f1.getWidth(txt);
-		//const uint16_t txtH = fnt_f1.getHeight();
+		if (opaque) {
+			p.setFG(cBackground);
+			p.fillRect(rect);
+		}
 
 		p.setFG(cText);
 		p.drawText(rect.x, rect.y, txt.c_str());