add response example

Author: brentru

examples/fona_sms_response.py

@@ -0,0 +1,45 @@
+import time
+import board
+import busio
+import digitalio
+from adafruit_fona.adafruit_fona import FONA
+
+print("FONA SMS Response")
+
+# Create a serial connection for the FONA connection
+uart = busio.UART(board.TX, board.RX)
+rst = digitalio.DigitalInOut(board.D5)
+
+# Initialize FONA module (this may take a few seconds)
+fona = FONA(uart, rst)
+
+# Enable FONA debug output
+fona.debug=True
+
+# Initialize Network
+while fona.network_status != 1:
+    print("Connecting to network...")
+    time.sleep(1)
+print("Connected to network!")
+print("RSSI: %ddB" % fona.rssi)
+
+# Enable FONA SMS notification
+fona.enable_sms_notification = True
+
+# store incoming notification info
+notification_buf = bytearray(64)
+
+print("FONA Ready!")
+while True:
+    if fona.in_waiting: # data is available from FONA
+        notification_buf = fona._read_line()[1]
+        # Split out the sms notification slot num.
+        notification_buf = notification_buf.decode()
+        sms_slot = notification_buf.split(",")[1]
+
+        print("NEW SMS!\n\t Slot: ", sms_slot)
+
+        # Get sms message and address
+        sender, message = fona.read_sms(sms_slot)
+        print("FROM: ", sender)
+        print("MSG: ", message)