import time, re, serial


timer = 5
ok = re.compile('A')


def drawBot():

    # Draws a teddy bear robot Egyptian-walking-style silhouette 
    # ==================================================================================================================

    commands = ['d', 'g5', 't-38', 'g4', 't33', 'g10', 't-35', 'g1', 't35', 'g-10', 't34', 'g-4', 'u', 'g4', 't-34', 'g10', 't-35', 'd', 'g6', 't-35', 'g10', 't-35', 'g4', 't38', 'g6', 't38', 'g5', 't-33', 'g10', 't-34', 'g10', 't-38', 'g7', 't36', 'g7', 't-34', 'g4', 't34', 'g4', 't36', 'g2', 't36', 'g4', 't-36', 'g2', 't-36', 'g4', 't36', 'g2', 't36', 'g4', 't34', 'g4', 't-34', 'g5', 't-36', 'g5', 't33', 'g5', 't-33', 'g5', 't-36', 'g3', 't36', 'g3', 't36', 'g3', 't-33', 'g3', 't-33', 'g3', 't36', 'g3', 't36', 'g3', 't-36', 'g5', 't-33', 'g5', 't-34', 'g7', 't36', 'g7', 't-34', 'g3', 't34', 'g3', 't36', 'g2', 't36', 'g3', 't-36', 'g2', 't-36', 'g3', 't36', 'g2', 't36', 'g3', 't34', 'g3', 't-34', 'g5', 't-36', 'g5', 't-35', 'g10', 'u', 't35', 'g-20']

    # ==================================================================================================================

 
    for c in commands:
        print c
        executed = False
        
        while (executed == False):
            
            out = ''
            ser.write(c)
            time.sleep(0.25)

            for i in xrange(1, timer):
                time.sleep(1)
                out += ser.read(1)
                print out+'\n'
                res = ok.search(out)

                if (i == timer):
                	print 'Trying again after', i, 'seconds!'
                	break
                elif res:
                    executed = True
                    break
                else:
                    continue    



# configure the serial connections 
# (the parameters differs on the device you are connecting to)
ser = serial.Serial(
    #port='/dev/ttyUSB0',
    #port='/dev/rfcomm0',
    #port='/dev/rfcomm1',
    #port='/dev/rfcomm2',
    port='COM13',
    baudrate=9600,
    timeout=1
)


print 'Enter your commands below.\r\nInsert "exit" to leave the application.'

input=1
while 1 :
    # get keyboard input
    input = raw_input(">> ")
        # Python 3 users
        # input = input(">> ")
    if input == 'exit':
        ser.close()
        exit()
    elif input == 'draw':
        drawBot()
    else:
        # send the character to the device
        # (note that I happend a \r\n carriage return and line 
        # feed to the characters - this is requested by my device)
        ser.write(input + '\r\n')
        out = ''
        # let's wait [some time] before reading output 
        # (that is, let's give device time to answer)
        #time.sleep(0.25)
        time.sleep(1)
        while ser.inWaiting() > 0:
            out += ser.readline() #ser.read(1)

        if out != '':
            print ">>" + out