Fix buttons in left handed mode when user is changing the temperature.

As pointed out in #29

Clear the leftover temperature unit on the sleep screen.

workspace/ts100/src/Modes.c

@@ -104,6 +104,29 @@ void ProcessUI() {
 		}
 		break;
 	case TEMP_ADJ:
+		if (systemSettings.flipDisplay) {
+			if (Buttons == BUT_B) {
+				//A key pressed so we are moving down in temp
+
+				if (systemSettings.SolderingTemp > 1000)
+					systemSettings.SolderingTemp -= 100;
+			} else if (Buttons == BUT_A) {
+				//B key pressed so we are moving up in temp
+				if (systemSettings.SolderingTemp < 4500)
+					systemSettings.SolderingTemp += 100;
+			} else {
+				//we check the timeout for how long the buttons have not been pushed
+				//if idle for > 3 seconds then we return to soldering
+				//Or if both buttons pressed
+				if (Buttons == (BUT_A | BUT_B)) {
+					operatingMode = STARTUP;
+					saveSettings();
+				} else if ((millis() - getLastButtonPress() > 2000)) {
+					operatingMode = SOLDERING;
+				}
+
+			}
+		} else {
 			if (Buttons == BUT_A) {
 				//A key pressed so we are moving down in temp
 
@@ -123,6 +146,7 @@ void ProcessUI() {
 					saveSettings();
 				}
 			}
+		}
 		break;
 	case SETTINGS:
 		//Settings is the mode with the most logic
@@ -589,7 +613,7 @@ void DrawUI() {
 	case SLEEP:
 		//The iron is in sleep temp mode
 		//Draw in temp and sleep
-		OLED_DrawString("SLP", 3);
+		OLED_DrawString("SLP ", 4);
 		drawTemp(temp, 4, systemSettings.temperatureRounding);
 		OLED_BlankSlot(84, 96 - 85);		//blank out after the temp