1 files changed, 150 insertions, 0 deletions
diff --git a/tmk_core/protocol/usb_hid/USB_Host_Shield_2.0/examples/HID/scale/scale_rptparser.cpp b/tmk_core/protocol/usb_hid/USB_Host_Shield_2.0/examples/HID/scale/scale_rptparser.cpp
new file mode 100644
index 000000000..01ed980cf
--- /dev/null
+++ b/tmk_core/protocol/usb_hid/USB_Host_Shield_2.0/examples/HID/scale/scale_rptparser.cpp
@@ -0,0 +1,150 @@
+/* Parser for standard HID scale (usage page 0x8d) data input report (ID 3) */ 
+#include "scale_rptparser.h"
+
+const char* UNITS[13] = {
+    "units",        // unknown unit
+    "mg",           // milligram
+    "g",            // gram
+    "kg",           // kilogram
+    "cd",           // carat
+    "taels",        // lian
+    "gr",           // grain
+    "dwt",          // pennyweight
+    "tonnes",       // metric tons
+    "tons",         // avoir ton
+    "ozt",          // troy ounce
+    "oz",           // ounce
+    "lbs"           // pound
+};
+
+ScaleReportParser::ScaleReportParser(ScaleEvents *evt) :
+	scaleEvents(evt)
+{}
+
+void ScaleReportParser::Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf)
+{
+	bool match = true;
+
+	// Checking if there are changes in report since the method was last called
+	for (uint8_t i=0; i<RPT_SCALE_LEN; i++) {
+		if( buf[i] != oldScale[i] ) {
+			match = false;
+			break;
+		}
+  }
+  	// Calling Game Pad event handler
+	if (!match && scaleEvents) {
+		scaleEvents->OnScaleChanged((const ScaleEventData*)buf);
+
+		for (uint8_t i=0; i<RPT_SCALE_LEN; i++) oldScale[i] = buf[i];
+	}
+}
+
+ScaleEvents::ScaleEvents( Max_LCD* pLCD ) :
+	
+	pLcd( pLCD )
+
+{}
+
+void ScaleEvents::LcdPrint( const char* str )
+{
+	
+	while( *str ) {
+		
+		pLcd->write(	*str++ );
+		
+	}
+}
+
+void ScaleEvents::OnScaleChanged(const ScaleEventData *evt)
+{
+	
+	pLcd->clear();
+  pLcd->home();
+  pLcd->setCursor(0,0);
+	
+	if( evt->reportID != 3 ) {
+		
+		const char inv_report[]="Invalid report!";
+		
+		Serial.println(inv_report);
+		LcdPrint(inv_report);
+		
+		return;
+		
+	}//if( evt->reportID != 3...
+	
+	switch( evt->status ) {
+		
+		case REPORT_FAULT: 
+			Serial.println(F("Report fault"));
+			break;
+			
+		case ZEROED:
+			Serial.println(F("Scale zero set"));
+			break;
+			
+		case WEIGHING: {
+			
+			const char progress[] = "Weighing...";
+			Serial.println(progress);
+			LcdPrint(progress);
+			break;
+		}
+		
+		case WEIGHT_VALID: {
+			
+			char buf[10];
+      double weight = evt->weight * pow( 10, evt->exp );
+      
+      	
+                        
+      	Serial.print(F("Weight: "));
+				Serial.print( weight );
+				Serial.print(F(" "));
+				Serial.println( UNITS[ evt->unit ]);
+				
+				LcdPrint("Weight: ");
+				dtostrf( weight, 4, 2, buf );
+				LcdPrint( buf ); 
+				LcdPrint( UNITS[ evt->unit ]);
+			
+			break;
+			
+		}//case WEIGHT_VALID...
+			
+		case WEIGHT_NEGATIVE: {
+			
+			const char negweight[] = "Negative weight";
+			Serial.println(negweight);
+			LcdPrint(negweight);
+			break;
+		}
+			
+		case OVERWEIGHT: {
+		
+			const char overweight[] = "Max.weight reached";
+			Serial.println(overweight);
+			LcdPrint( overweight );
+			break;
+		}
+		
+		case CALIBRATE_ME:
+			
+			Serial.println(F("Scale calibration required"));
+			break;
+			
+		case ZERO_ME:
+			
+			Serial.println(F("Scale zeroing required"));
+			break;
+			
+		default:
+			
+			Serial.print(F("Undefined status code: "));
+			Serial.println( evt->status );
+			break;	
+			
+	}//switch( evt->status...
+
+}