add USB check for powerup

ch32v-insert-coin/src/app.rs

@@ -648,6 +648,16 @@ impl App {
     pub fn get_state(&self) -> State {
         self.state
     }
+    pub fn should_wake(&self) -> bool {
+        if self.interfaces.usb.powered() {
+            return true;
+        } else {
+            if self.interfaces.adc_core.get_average() > 421 {
+                return true;
+            }
+        }
+        return false;
+    }
 }
 
 // TODO LIST