initial push

echo-master/echo_serial/serial_controller.py

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+import serial
+import _thread
+import time
+import sys
+import os
+
+import echo_db.database as EchoDB
+import echo_controller.controller as Controller
+
+class EchoSerial:
+
+    arduino = serial.Serial()
+    allow_control = True
+
+    @staticmethod
+    def init():
+        try:
+            print('Starting Serial Connection with arduino...')
+            # Start Serial Connection
+            EchoSerial.arduino.baudrate = 115200
+            EchoSerial.arduino.port = '/dev/ttyACM0'
+            EchoSerial.arduino.timeout = .1
+            EchoSerial.arduino.open()
+
+            if not EchoSerial.arduino.is_open:
+                print('Could not open Serial Connection with arduino!')
+            
+            print('Serial Connection Opened with arduino!')
+            print('Starting Serial Handling Thread...')
+            _thread.start_new_thread(EchoSerial.handle_serial, ("Main Serial Thread", 2, ))
+        except:
+            print('Error Initializing Serial Controller!')
+            print('Serial Error: ' + str(sys.exc_info()[0]))
+            EchoSerial.allow_control = False
+            
+    @staticmethod
+    def handle_serial(threadname, delay):
+        print('Serial Handling Thread Started!')
+        while EchoSerial.arduino.isOpen():
+            time.sleep(.02)
+            try:
+                data = EchoSerial.arduino.readline()[:-2]
+                if data:
+                    # Parse Incoming Data > Decode to UTF-8
+                    parsed_data = data.decode("utf-8")
+
+                    # Start new thread to handle the reponse
+                    _thread.start_new_thread(EchoSerial.handle_serial_data, ("Serial Response Handler Tread", 2, parsed_data))
+                    
+            except:
+                print('Error Occured on Serial handling Thread!')
+                print('Serial Error: ' + str(sys.exc_info()[0]))
+                EchoSerial.allow_control = False
+                EchoSerial.reopen_serial_connection()
+                # _thread.interrupt_main()
+    
+    @staticmethod
+    def reopen_serial_connection():
+        try:
+            EchoSerial.arduino.close()
+        except:
+            print("Error closing serial connection")
+
+        while not EchoSerial.arduino.isOpen():
+            try:
+                EchoSerial.arduino.open()
+            except:
+                print("Error reopening serial connection")
+            finally:
+                time.sleep(1)
+        
+        EchoSerial.allow_control = True
+        print("Serial Connection Established!")
+        
+    @staticmethod
+    def handle_serial_data(threadNamee, delay, data):
+        # Command Example:
+        # 9472-4f60:temp_data:data
+        # Data is if needed separated by ,
+        print('Parsing Packet: ' + data)
+
+        # Remove packet Markers
+        data = data[1:-1]
+
+        # Parse command
+        parsed_data = data.split(':')
+
+        # Check if startup command
+        if parsed_data[0] == "0":
+            print('Echo Controller Ready!')
+            return
+        
+        # Check if startup command
+        if parsed_data[0] == "1":
+            print('Echo LED Controller Ready!')
+            return
+
+        # Get Device
+        collection = EchoDB.EchoDB.database['Devices']
+        device = collection.find_one({'uuid': parsed_data[0]})
+
+        # Send to controller
+        Controller.Controller.handle_output_device(device, parsed_data[1], parsed_data)
+
+    @staticmethod
+    def send_serial(command):
+        # Command Example:
+        # 9472-4f60:get_data:data
+        # data is if needed separated by ,
+        EchoSerial.arduino.write(command.encode())
+
+    @staticmethod
+    def send_commmand(device, action, value = "0"):
+        serial_command = "<" + device['uuid'] + ":" + action + ":" + value + ">"
+        print('Sending Packet: ' + serial_command)
+        EchoSerial.send_serial(serial_command)
+        
+
+
+                    
+
+