-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathsmart_node.py
More file actions
165 lines (136 loc) · 6.35 KB
/
smart_node.py
File metadata and controls
165 lines (136 loc) · 6.35 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
#!/usr/bin/python
#---------------------------------------------------------------------
# smart_node.py
# Create a simple Node with Raspberry Pi 5
#
# Author : Phien Nguyen (Mark)
# Date : 22 June 2025
#---------------------------------------------------------------------
import signal
import time
import sys
import threading
import board
import datetime
from lcd_touch import ili9341
from lcd_touch import xpt2046
from sensors import dht11
from sensors import bh1750
from mqtt import mqtt_client
from actuators import led
is_running = True
bh1750_sens = None
# dht11 connect to GPIO4 (pin 7)
dht11_sens = None
DHT11_PIN = board.D4
# LCD ILI9341 connection
LCD_DC_PIN_ID = 18
LCD_RESET_PIN_ID = 23
LCD_CHIP_ID = 0 # ILI9341 connect to CE0
# LCD ILI9341 display parameters
LCD_RESOLUTION_X = 320
LCD_RESOLUTION_Y = 240
LCD_DISPLAY_ANGLE = 0
ili9341_lcd = None
# LED connect to PWM0
LED_PWM_PIN = 0
LED_DEFAULT_BRIGHTNESS = 50
LED_CHIP_ID = 0
led_ctrl = None
light_level = None
temperature = None
humid = None
mqtt_client_obj = None
def lcd_update_temperature(value):
ili9341_lcd.write_string(150, 120, " ", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(150, 120, f"{value:.1f}", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
def lcd_update_humid(value):
ili9341_lcd.write_string(150, 150, " ", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(150, 150, f"{value}", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
def lcd_update_light_level(value):
ili9341_lcd.write_string(150, 180, " ", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(150, 180, f"{value:.1f}", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
def lcd_update_led_status(status):
ili9341_lcd.write_string(150, 210, " ", ili9341.font.font_11x18, ili9341.ILI9341_RED, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(150, 210, status, ili9341.font.font_11x18, ili9341.ILI9341_RED, ili9341.ILI9341_BLACK)
def lcd_update_time(time):
ili9341_lcd.write_string(220, 0, " ", ili9341.font.font_11x18, ili9341.ILI9341_WHITE, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(220, 0, time, ili9341.font.font_11x18, ili9341.ILI9341_WHITE, ili9341.ILI9341_BLACK)
def task_update_sensors():
global light_level, temperature, humid
lcd_light_level = 0
lcd_temperature = 0
lcd_humid = 0
lcd_led_status = ""
while is_running:
light_level = bh1750_sens.read_light()
try:
temperature = dht11_sens.get_temperature()
humid = dht11_sens.get_humidity()
if temperature == None:
temperature = lcd_temperature
if humid == None:
humid = lcd_humid
except RuntimeError as e:
print(f"DHT11 - RuntimeError: {e}")
except Exception as e:
print(f"DHT11 - Exception: {e}")
if light_level > 100:
led_ctrl.led_off()
else:
led_ctrl.led_on()
print(f"Light level: {light_level:.1f} lx, Temperature: {temperature:.1f} degree C, Humid: {humid}%")
if light_level != lcd_light_level:
lcd_update_light_level(light_level)
lcd_light_level = light_level
if temperature != lcd_temperature:
lcd_update_temperature(temperature)
lcd_temperature = temperature
if humid != lcd_humid:
lcd_update_humid(humid)
lcd_humid = humid
if led_ctrl.led_status != lcd_led_status:
lcd_update_led_status(led_ctrl.led_status)
lcd_led_status = led_ctrl.led_status
curr_time = datetime.datetime.now()
lcd_update_time(f"{curr_time.hour:02}:{curr_time.minute:02}:{curr_time.second:02}")
time.sleep(1)
def task_update_mqtt():
while is_running:
if temperature is not None and humid is not None and light_level is not None:
curr_time = datetime.datetime.now()
str_mqtt = f"{curr_time.hour:02}:{curr_time.minute:02}:{curr_time.second:02} - Light level: {light_level:.1f} lx, Temperature: {temperature:.1f} degree C, Humid: {humid}%"
mqtt_client_obj.publish(mqtt_topic_weather, str_mqtt, 0)
time.sleep(10)
def mqtt_message_callback(client, userdata, msg):
print(msg.topic + " " + str(msg.qos) + " " + str(msg.payload))
if __name__ == "__main__":
bh1750_sens = bh1750.BH1750()
dht11_sens = dht11.DHT11(DHT11_PIN)
led_ctrl = led.Led(LED_PWM_PIN, LED_DEFAULT_BRIGHTNESS, LED_CHIP_ID)
led_ctrl.led_off()
ili9341_lcd = ili9341.ILI9341(LCD_DC_PIN_ID, LCD_RESET_PIN_ID, LCD_CHIP_ID, LCD_RESOLUTION_X, LCD_RESOLUTION_Y, LCD_DISPLAY_ANGLE)
ili9341_lcd.init()
ili9341_lcd.fill_screen(ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(0, 120, "Temperature: ", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(0, 150, "Humid: ", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(0, 180, "Light level: ", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(0, 210, "LED status: ", ili9341.font.font_11x18, ili9341.ILI9341_RED, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(200, 120, "degree C", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(180, 150, "%", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
ili9341_lcd.write_string(225, 180, "Lux", ili9341.font.font_11x18, ili9341.ILI9341_MAGENTA, ili9341.ILI9341_BLACK)
mqtt_user = "smartnode"
mqtt_password = "smartnode"
mqtt_cluster_URL = "xxxxx.s1.eu.hivemq.cloud"
mqtt_topic_weather = "weather"
mqtt_subscribe_HiveMQ = "hiveMQ"
mqtt_client_obj = mqtt_client.MQTTClient(user=mqtt_user, password=mqtt_password, cluster_URL=mqtt_cluster_URL)
mqtt_client_obj.set_message_callback(mqtt_message_callback)
mqtt_client_obj.subscribe_channel(mqtt_subscribe_HiveMQ, 0)
mqtt_client_obj.start_thread_subscribe()
thread_sensor = threading.Thread(target=task_update_sensors)
thread_mqtt = threading.Thread(target=task_update_mqtt)
thread_sensor.start()
thread_mqtt.start()
while True:
time.sleep(100)