Add: power on with context, SIM808 support

api/modem/gps/nmea.go

@@ -39,7 +39,7 @@ func secondCountDownTimer(title string, logger *log.Logger, t time.Duration) {
 		if counter > int(t.Seconds()) {
 			break
 		}
-		logger.Printf("%s: %d/%f\n", title, counter, t.Seconds())
+		// logger.Printf("%s: %d/%f\n", title, counter, t.Seconds())
 		time.Sleep(time.Second)
 		counter += 1
 	}
@@ -118,7 +118,7 @@ func (g *gps) collectNmeaReports(flags nmeaFlags) ([]string, error) {
 	}
 
 	// DEBUG
-	// g.logger.Println("NMEA raw collect:", resp)
+	g.logger.Println("NMEA raw collect:", resp)
 
 	// Right responce struct:
 	// \r\n