#!/usr/bin/python

# This file is part of Espruino, a JavaScript interpreter for Microcontrollers
#
# Copyright (C) 2013 Gordon Williams <gw@pur3.co.uk>
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# ----------------------------------------------------------------------------------------
# Simple example code for sending a command to Espruino
# ----------------------------------------------------------------------------------------

import time
import serial
import sys
import json

def espruino_cmd(command):
	ser = serial.Serial(
		port='/dev/ttyUSB0', # or /dev/ttyAMA0 for serial on the PI
		baudrate=9600,
		parity=serial.PARITY_NONE,
		stopbits=serial.STOPBITS_ONE,
		bytesize=serial.EIGHTBITS,
		xonxoff=0, rtscts=0, dsrdtr=0,
	)
	ser.open()
	ser.isOpen()
	ser.write(command+"\n")
	endtime = time.time()+0.2 # wait 0.2 sec
        result = ""
	while time.time() < endtime:
		while ser.inWaiting() > 0:
			result=result+ser.read(1)
	ser.close()
        return result


# Read 1 analog
#print espruino_cmd("print(analogRead(A1))").strip()
# Read 3 analogs into an array
#print espruino_cmd("print([analogRead(A1),analogRead(A2),analogRead(A3)])").strip().split(',')

if len(sys.argv)!=2:
  print "USAGE: espruino_command.py \"print('hello')\""
  exit(1)

print espruino_cmd(sys.argv[1]).strip()