[HW] Rpi4 Code added with MQTT Support

@@ -10,3 +10,4 @@
 + 2021.05.03: Init(개인 아두이노 코드 git에서 이전)
 + 2021.05.11: Arduino 개발 중단, RaspberryPi Pico로 플랫폼 이전, C++ -> MicroPython
 + 2021.05.12: RaspberryPi Pico v0.1 code complete. Now working on rpi4 with MQTT.
++ 2021.05.13: RaspberryPi4 v0.1 code complete. with MQTT. + Pico code bug fix.
\ No newline at end of file

+# RaspberryPi4용 코드
+
+- rpi.py
+```
+라즈베리파이 메인코드
+```
+- serverside_mqtt_stest.py
+```
+server에서 데이터 보낼 예제
+```
+- serverside_mqtt_rtest.py
+```
+server에서 수신한 데이터 
+```
+python rpi.py동작 후, test코드 활용해서 테스트 가능

+paho-mqtt
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+import paho.mqtt.client as mqtt
+import paho.mqtt.publish as publish
+
 from bluetooth import *
 import time
 
+MQTT_BLOCK = False
+
+BT_MAC_ADDRESS = '00:18:91:D8:24:39'
+MED_BOTT_NO = '1'
+
 client_socket = BluetoothSocket( RFCOMM )
-client_socket.connect(("00:18:91:D8:24:39", 1))
-print("bluetooth connected!")
+client_mqtt = mqtt.Client()
 
+# --------------------------------------------------- #
+# INTERNAL FUNCTIONS
+# --------------------------------------------------- #
 def _send_data(msg:str):
+    ''' Bluetooth를 통해 데이터를 송신한다
+    '''
     client_socket.send(msg)
 
 def _recv_data():
+    ''' Bluetooth를 통해 데이터를 수신한다
+    '''
     # 소켓에 2초간 받을 수 있는 시간을 준다
     client_socket.settimeout(2)
 
@@ -21,23 +35,99 @@ def _recv_data():
         while time.time() < timeout_start + timeout:
             data += client_socket.recv(1024).decode('utf-8')
     except:
-        print("INFO: DATA RECV TIMEOUT")
+        print('INFO: DATA RECV TIMEOUT')
     finally:
         return data
 
 
-while True:
-    sel_mode = input("SELECT MODE: ")
+def _sub_mqtt(client, userdata, flags, rc):
+    ''' MQTT에서 subscribe한다
+    '''
+    print("Connected with result code "+str(rc))
+    client.subscribe(f'bottle/1/stb')
 
-    if sel_mode == 'W':
-        msg = input("send message : ")
-        _send_data(msg)
+def _work_mqtt(client, userdata, msg):
+    ''' MQTT에서 데이터를 받으면 알맞게 로직을 수행한다
+    '''
+    print('DOING SOMETHING')
+    global MQTT_BLOCK
+    MQTT_BLOCK = True
 
-    elif sel_mode == 'WR':
-        msg = input("send message : ")
-        _send_data(msg)
+    received_msg = msg.payload.decode('utf-8')
 
+    data = ''
+    data_list = []
+
+    # 만약 req메시지를 받았다면
+    if received_msg == 'req':
+        while len(data_list) != 4:
+            _send_data('REQ')
             data = _recv_data()
-        print(f"Received: {data}")
+            data_list = data.split('/')
+        # 데이터를 Publish한다
+        _pub_mqtt(f'bottle/{MED_BOTT_NO}/bts', data, 'localhost')
+        
+    # 만약 res메시지를 받았다면
+    elif received_msg.split('/')[0] == 'res':
+        _send_data(received_msg.split('/')[1])
+        data = _recv_data()
+        data_list = data.split('/')
+        while len(data_list) != 4:
+            _send_data('REQ')
+            data = _recv_data()
+            data_list = data.split('/')
+        # 데이터를 Publish한다
+        _pub_mqtt(f'bottle/{MED_BOTT_NO}/bts', data, 'localhost')
+
+    print("DEBUG")
+    print(data)
+    print(data_list)
+    print(received_msg)
+    MQTT_BLOCK = False
+
+def _pub_mqtt(topic:str, payload:str, hostname:str):
+    ''' MQTT를 통해 데이터를 publish한다
+    '''
+    publish.single(
+        topic=topic,
+        payload=payload,
+        hostname=hostname)
+
+
+# --------------------------------------------------- #
+# MAIN
+# --------------------------------------------------- #
+def _run():
+    # CONNECT BT
+    client_socket.connect((BT_MAC_ADDRESS, 1))
+    print('bluetooth connected!')
+
+    # SUBSCRIBE MQTT
+    client_mqtt.on_connect = _sub_mqtt
+    client_mqtt.on_message = _work_mqtt
+    client_mqtt.connect_async("localhost")
+    client_mqtt.loop_start()
+
+
+    while True:
+        if MQTT_BLOCK is False:
+            # 항상 데이터를 받을 상태로 있는다
+            data = _recv_data()
+
+            # 만약 데이터가 ''가 아니면 무언가 온 것이므로 처리한다
+            if data != '':
+                print('DATA IN')
+                data_list = data.split('/')
+                
+                # 만약 데이터가 불량하게 왔을 경우, 제대로 올때까지 반복시도한다
+                while len(data_list) != 4:
+                    data = _recv_data()
+                    data_list = data.split('/')
+
+                # 데이터를 Publish한다
+                _pub_mqtt(f'bottle/{MED_BOTT_NO}/bts', data, 'localhost')
+
+    client_socket.close()
 
-client_socket.close()
\ No newline at end of file
+if __name__ == '__main__':
+    _run()
\ No newline at end of file

+import paho.mqtt.client as mqtt
+
+import time
+
+def on_connect(client, userdata, flags, rc):
+    print("Connected with result code "+str(rc))
+    client.subscribe("bottle/1/bts") # 요거 수정해서 확인하세요
+
+def on_message(client, userdata, msg):
+    print(msg.topic)
+    print(msg.payload.decode('utf-8'))
+
+client = mqtt.Client()
+client.on_connect = on_connect
+client.on_message = on_message
+
+client.connect_async("localhost")
+client.loop_start()
+
+while True:
+    print("TESTing")
+    time.sleep(1)
\ No newline at end of file

+import paho.mqtt.publish as publish
+
+# hub -> server
+# msgs = \
+# [
+#     {
+#         'topic':"bottle/1/bts",
+#         'payload':"1/30.4/32.2/1"
+#     }
+# ]
+
+# server -> hub with date
+# msgs = \
+# [
+#     {
+#         'topic':"bottle/1/stb",
+#         'payload':"res/0513"
+#     }
+# ]
+
+# server -> hub without date
+msgs = \
+[
+    {
+        'topic':"bottle/1/stb",
+        'payload':"req"
+    }
+]
+
+publish.multiple(msgs, hostname="localhost")

@@ -8,8 +8,9 @@ display4 = tm1637.TM1637(clk=Pin(12), dio=Pin(13))
 # --------------------------------------------------- #
 def work_tm1637(data:str):
     display4.show(data)
-    sleep(2)
-    mydisplay.show('    ')
+
+def off_tm1637():
+    display4.show('    ')
  
 # # Show a word
 # mydisplay.show("Pico")

@@ -10,6 +10,21 @@ import reed
 import display4
 
 # --------------------------------------------------- #
+# FUNCTIONS
+# --------------------------------------------------- #
+def _collect_sensor_datas(reed_data:int) -> str:
+    # Collect Humidity, Temperature
+    dht_data = dht.work_dht()
+    if dht_data == False:
+        dht_data = [0,0]
+    # Collect Ultrasonic distance
+    ultrasonic_data = ultrasonic.work_sr04()
+    # Make data string
+    send_data_str = str(reed_data) + '/' + str(dht_data[1]) + '/' + str(dht_data[0]) + '/' + str(ultrasonic_data)
+
+    return send_data_str
+
+# --------------------------------------------------- #
 # LOOP ENTRYPOINT
 # --------------------------------------------------- #
 def _run():
@@ -37,22 +52,16 @@ def _run():
             
             # IF INPUT MEANS GET MESSAGE or MEDICINE LID STATUS CHANGED
             if input_data == 'REQ' or reed_data != current_reed_data:
-                # Collect Humidity, Temperature
-                dht_data = dht.work_dht()
-                if dht_data == False:
-                    dht_data = [0,0]
-                # Collect Ultrasonic distance
-                ultrasonic_data = ultrasonic.work_sr04()
-                # Make data string
-                send_data_str = str(reed_data) + '/' + str(dht_data[1]) + '/' + str(dht_data[0]) + '/' + str(ultrasonic_data)
                 # Send data using BT
-                bto.send_data_bt(send_data_str)
-            
+                bto.send_data_bt(_collect_sensor_datas(reed_data))
             else:
                 # Refine BT data
                 input_data = input_data.strip()
                 display4.work_tm1637(input_data)
                 neopixel.work_led()
+                display4.off_tm1637()
+                # Send data using BT
+                bto.send_data_bt(_collect_sensor_datas(reed_data))
             
             # Update reed state
             reed_data = current_reed_data