LightboxResources_Final/Python_LB_CommTest.py at main · GormleyLab/LightboxResources_Final · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
import pandas as pd
import numpy as np
import xml.etree.ElementTree as ET
import serial
import time
print ()
print ()

serPort = 'COM3'
baudRate = 9600
ser = serial.Serial(serPort, baudRate)
startMarker = 60
endMarker = 62

def sendToArduino(sendStr):
    ser.write(sendStr.encode('utf-8')) # change for Python3


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

def recvFromArduino():
    global startMarker, endMarker

    ck = ""
    x = "z" # any value that is not an end- or startMarker
    byteCount = -1 # to allow for the fact that the last increment will be one too many

    # wait for the start character
    while  ord(x) != startMarker:
        x = ser.read()

    # save data until the end marker is found
    while ord(x) != endMarker:
        if ord(x) != startMarker:
            ck = ck + x.decode("utf-8") # change for Python3
            byteCount += 1
        x = ser.read()

    return(ck)


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

def waitForArduino():

    # wait until the Arduino sends 'Arduino Ready' - allows time for Arduino reset
    # it also ensures that any bytes left over from a previous message are discarded

    global startMarker, endMarker

    msg = ""
    while msg.find("Arduino is ready") == -1:

        while ser.inWaiting() == 0:
            pass

        msg = recvFromArduino()

        print (msg) # python3 requires parenthesis
        print ()

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

def runTest(td):
    numLoops = len(td)
    waitingForReply = False

    n = 0
    while n < numLoops:
        teststr = td[n]

        if waitingForReply == False:
            sendToArduino(teststr)
            print ("Sent from PC -- LOOP NUM " + str(n) + " TEST STR " + teststr)
            waitingForReply = True

        if waitingForReply == True:

            while ser.inWaiting() == 0:
                pass

            dataRecvd = recvFromArduino()
            print ("Reply Received  " + dataRecvd)
            n += 1
            waitingForReply = False

            print ("===========")

        time.sleep(5)


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


print ("Serial port " + serPort + " opened  Baudrate " + str(baudRate))


waitForArduino()


a = [63,63,63,63,31,0,0,0]
b = '<'+ ','.join(map(str,a)) + '>'
testData = [b]
runTest(testData)
ser.close()