Hi Aaron, Below is the code I managed to put together. For some reason the Receiving code tends to ‘Error’ out. I think it might have something to do with the way the ‘send_at’ function is arranged.
import RPi.GPIO as GPIO
import serial
import time
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(21, GPIO.OUT)
GPIO.output(21, GPIO.LOW)
ser = serial.Serial("/dev/ttyS0",115200)
#ser.flushInput()
phone_number = '+16785577282' #********** change it to the phone number you want to call
text_message = 'Green Monster Hello2'
power_key = 6
#rec_buff = ''
def send_at(command,back,timeout):
rec_buff = ''
ser.write((command+'\r\n').encode())
time.sleep(timeout)
incoming_bytes = ser.inWaiting()
print(incoming_bytes)
if ser.inWaiting()>=0:
time.sleep(0.01)
rec_buff = ser.read(ser.inWaiting())
if rec_buff != '':
print(rec_buff.decode())
if 'red' in rec_buff.decode(): GPIO.output(21, GPIO.HIGH), time.sleep(3), GPIO.output(21, GPIO.LOW)
if back not in rec_buff.decode():
#print(command + ' ERROR')
print(command + ' back:\t' + rec_buff.decode())
return 0
else:
#print(rec_buff.decode())
global TEXTDATA
TEXTDATA = str(rec_buff)
print(TEXTDATA)
return 1
def SendShortMessage(phone_number,text_message):
print("Setting SMS Sending mode...")
send_at("AT+CMGF=1","OK",1)
print("Sending Short Message")
answer = send_at("AT+CMGS=\""+phone_number+"\"",">",2)
if 1 == answer:
ser.write(text_message.encode())
ser.write(b'\x1A')
answer = send_at('','OK',20)
if 1 == answer:
print('send successfully')
else:
print('error')
else:
print('error%d'%answer)
def ReceiveShortMessage():
rec_buff = ''
print('Setting SMS Receving mode...')
send_at('AT+CMGF=1','OK',1)
#send_at('AT+CPMS=\"SM\",\"SM\",\"SM\"', 'OK', 1)
#answer = send_at('AT+CMGR=1','+CMGR:',2)
send_at('AT+CMGL="REC UNREAD"', 'OK', 1)
answer = send_at('AT+CMGL="REC UNREAD"', '+CMTI', 1)
if 1 == answer:
answer = 0
if 'red' in rec_buff:
answer = 1
print('Turning LEDS onto RED')
# if 'OK' in rec_buff:
# answer = 1
# print(rec_buff)
else:
# print('error%d'%answer)
print('No New text')
return False
return True
def power_on(power_key):
print('SIM7600X is starting:')
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(power_key,GPIO.OUT)
time.sleep(0.1)
GPIO.output(power_key,GPIO.HIGH)
time.sleep(2)
GPIO.output(power_key,GPIO.LOW)
time.sleep(20)
ser.flushInput()
print('SIM7600X is ready')
def power_down(power_key):
print('SIM7600X is loging off:')
GPIO.output(power_key,GPIO.HIGH)
time.sleep(3)
GPIO.output(power_key,GPIO.LOW)
time.sleep(18)
print('Good bye')
#except :
# if ser != None:
# ser.close()
# GPIO.cleanup()
#
while True:
ser.flushInput()
rec_buff = ''
power_on(power_key)
print('Sending Short Message Test:')
SendShortMessage(phone_number,text_message)
print('Receive Short Message Test:\n')
print('Please send message to phone ' + phone_number)
ReceiveShortMessage()
power_down(power_key)
