As a newbie to python, I'm trying to use it to read a file and write each line of the file to the RS-232 port. My code bellow seems to work for the most part, except for my listen and react segments. From poking around, it seems that my if statements can't read if I've received a "Start\r", or "End\r" string from my device (RS-232). Can anyone provide feedback on what is missing?
import serial
import time
port = "/dev/ttyS0"
speed = 9600
print("\n\n\n\nScript Starting\n\n\n")
ser = serial.Serial(port, speed, timeout=0)
ser.flushInput() #flush input buffer, discarding all its contents
ser.flushOutput()#flush output buffer, aborting current output and discard all that is in buffer
text_file = open("my.file", "r")
lines = text_file.read().split('\n')
i = 0
counter = 0
while i<len(lines):
response = ser.readline()
if (counter == 0):
print("\n\nProbing With Off Data\n")
ser.write('FFF')
ser.write('\r')
counter+=1
if (response == 'Start'):
ser.write('FFF')
ser.write('\r')
if (response == 'End'):
print("\nString Transmitted:")
print lines
make_list_a_string = ''.join(map(str, lines))
ser.write(make_list_a_string)
ser.write('\r')
print("\n")
i+=1
text_file.close()
exit(0)