Christian Andresen / Mbed OS GCOM

Greenhouse Climate Observation Module

Dependencies:   BSP_DISCO_F746NG DHT

main.cpp@3:c21057907d21, 2020-02-05 (annotated)

Committer:
chri721u
Date:
Wed Feb 05 12:15:21 2020 +0000
Revision:
3:c21057907d21
Parent:
2:739ba85b7a90
Child:
4:accd2aab9abf
Final Version;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
chri721u 0:a5831f680465 1 /*
chri721u 0:a5831f680465 2 Developer: Christian Andresen
chri721u 0:a5831f680465 3
chri721u 0:a5831f680465 4 Project name: Project Greenhouse
chri721u 0:a5831f680465 5
chri721u 0:a5831f680465 6 Brief description:
chri721u 0:a5831f680465 7 Microcontroller observing the climate within a greenhouse, and displaying warnings/information as needed.
chri721u 3:c21057907d21 8 Sensors monitor temperature and humidity.
chri721u 3:c21057907d21 9 To simulate an actual greenhouse, LEDs will be used in place of actual enviromental influences.
chri721u 3:c21057907d21 10 Simulator mode has been added for debugging and presentation purposes.
chri721u 0:a5831f680465 11 */
chri721u 0:a5831f680465 12
chri721u 0:a5831f680465 13 #include "mbed.h" // Mbed header from mbed-os version 5
chri721u 0:a5831f680465 14 #include "stm32746g_discovery_lcd.h" // Last updated 27/11/2019
chri721u 0:a5831f680465 15 #include "DHT.h" // Author: Wim De Roeve
chri721u 3:c21057907d21 16 #include <iostream>
chri721u 0:a5831f680465 17 #include "bootup.h" // Author: Christian Andresen
chri721u 0:a5831f680465 18
chri721u 0:a5831f680465 19 // Call Bootup class from bootup.h as LCD_Start
chri721u 0:a5831f680465 20 bootup LCD_Start;
chri721u 0:a5831f680465 21
chri721u 2:739ba85b7a90 22 /* Inputs */
chri721u 3:c21057907d21 23 AnalogIn Temp_Sensor(A0);
chri721u 3:c21057907d21 24 DHT Humid_Sensor(A1, DHT22);
chri721u 3:c21057907d21 25 InterruptIn simbutton(D2);
chri721u 2:739ba85b7a90 26
chri721u 2:739ba85b7a90 27 /* Outputs */
chri721u 3:c21057907d21 28 DigitalOut Temp_LED(D3); // Red LED
chri721u 3:c21057907d21 29 DigitalOut Humid_LED(D4); // Blue LED
chri721u 3:c21057907d21 30 DigitalOut Light_LED(D5); // Yellow LED
chri721u 3:c21057907d21 31 DigitalOut Water_LED(D6); // Blue LED
chri721u 3:c21057907d21 32 DigitalOut Window_LED(D7); // Green LED
chri721u 2:739ba85b7a90 33
chri721u 2:739ba85b7a90 34 /* Multithreads */
chri721u 2:739ba85b7a90 35 Thread tTimeCounter;
chri721u 3:c21057907d21 36 Thread tLocation_Select;
chri721u 3:c21057907d21 37 Thread tTemp;
chri721u 3:c21057907d21 38 Thread tHumid;
chri721u 3:c21057907d21 39 Thread tTemp_Check;
chri721u 3:c21057907d21 40 Thread tHumid_Check;
chri721u 3:c21057907d21 41
chri721u 3:c21057907d21 42 /* SIMULATION MODE */
chri721u 3:c21057907d21 43 bool simmode = 1;
chri721u 3:c21057907d21 44 void Sim_Toggle();
chri721u 3:c21057907d21 45
chri721u 3:c21057907d21 46 /* Device location */
chri721u 3:c21057907d21 47 void Location_Select();
chri721u 3:c21057907d21 48 int location_id;
chri721u 0:a5831f680465 49
chri721u 2:739ba85b7a90 50 /* Day & Night */
chri721u 2:739ba85b7a90 51 void TimeCounter();
chri721u 2:739ba85b7a90 52 void DayMode();
chri721u 2:739ba85b7a90 53 void NightMode();
chri721u 2:739ba85b7a90 54 int timecount = 0;
chri721u 2:739ba85b7a90 55 bool timeofday = 1;
chri721u 0:a5831f680465 56
chri721u 3:c21057907d21 57 /* Temp and Humidity */
chri721u 3:c21057907d21 58 void Temp_Display(); // Displays temperatures in Celsius on screen
chri721u 3:c21057907d21 59 void Humid_Display(); // Displays humidity in % on screen
chri721u 3:c21057907d21 60 void Temp_Check();
chri721u 3:c21057907d21 61 void Humid_Check();
chri721u 3:c21057907d21 62 float temp;
chri721u 3:c21057907d21 63 float humid;
chri721u 3:c21057907d21 64
chri721u 3:c21057907d21 65 /* Greenhouse mechanisms */
chri721u 3:c21057907d21 66 void Vent_Air();
chri721u 3:c21057907d21 67 void Heat_Lamp();
chri721u 3:c21057907d21 68 void Dehumidifier();
chri721u 3:c21057907d21 69 void Spray_Water();
chri721u 3:c21057907d21 70
chri721u 3:c21057907d21 71 uint8_t text[30]; // Used to display values with added text.
chri721u 3:c21057907d21 72 uint8_t text2[30]; // Used to display values with added text.
chri721u 3:c21057907d21 73
chri721u 3:c21057907d21 74 void startup()
chri721u 3:c21057907d21 75 {
chri721u 3:c21057907d21 76 cout << "Enter Greenhouse ID: \n \r";
chri721u 3:c21057907d21 77 cin >> location_id;
chri721u 3:c21057907d21 78 cout << "Greenhouse ID is: " << location_id;
chri721u 3:c21057907d21 79 }
chri721u 2:739ba85b7a90 80
chri721u 2:739ba85b7a90 81 int main()
chri721u 0:a5831f680465 82 {
chri721u 3:c21057907d21 83 startup();
chri721u 2:739ba85b7a90 84 LCD_Start.LCD_Bootup();
chri721u 2:739ba85b7a90 85 tTimeCounter.start(&TimeCounter);
chri721u 3:c21057907d21 86 tLocation_Select.start(&Location_Select);
chri721u 3:c21057907d21 87 simbutton.rise(&Sim_Toggle);
chri721u 3:c21057907d21 88 tTemp.start(&Temp_Display);
chri721u 3:c21057907d21 89 tHumid.start(&Humid_Display);
chri721u 3:c21057907d21 90 tTemp_Check.start(&Temp_Check);
chri721u 3:c21057907d21 91 tHumid_Check.start(&Humid_Check);
chri721u 2:739ba85b7a90 92 while(1) {}
chri721u 1:4363657c576d 93 }
chri721u 1:4363657c576d 94
chri721u 3:c21057907d21 95 void Sim_Toggle()
chri721u 3:c21057907d21 96 {
chri721u 3:c21057907d21 97 simmode = !simmode;
chri721u 3:c21057907d21 98 }
chri721u 3:c21057907d21 99
chri721u 3:c21057907d21 100 void Location_Select()
chri721u 3:c21057907d21 101 {
chri721u 3:c21057907d21 102 while(1) {
chri721u 3:c21057907d21 103 sprintf((char*)text2, "Greenhouse %d", location_id);
chri721u 3:c21057907d21 104 BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)&text2, LEFT_MODE);
chri721u 3:c21057907d21 105 if(simmode) {
chri721u 3:c21057907d21 106 BSP_LCD_DisplayStringAt(0, 25, (uint8_t *) "SIM MODE", LEFT_MODE);
chri721u 3:c21057907d21 107 } else if(simmode == 0) {
chri721u 3:c21057907d21 108 BSP_LCD_DisplayStringAt(0, 25, (uint8_t *) " ", LEFT_MODE);
chri721u 3:c21057907d21 109 }
chri721u 3:c21057907d21 110 }
chri721u 3:c21057907d21 111 }
chri721u 3:c21057907d21 112
chri721u 2:739ba85b7a90 113 void TimeCounter()
chri721u 0:a5831f680465 114 {
chri721u 2:739ba85b7a90 115 // Timecounter counts up to one cycle of 720 minutes (Sim 7.20 secs)
chri721u 0:a5831f680465 116 while(1) {
chri721u 3:c21057907d21 117 if(simmode) {
chri721u 3:c21057907d21 118 timecount++;
chri721u 3:c21057907d21 119 wait(0.01);
chri721u 3:c21057907d21 120 if (timecount == 721) {
chri721u 3:c21057907d21 121 timeofday = !timeofday;
chri721u 3:c21057907d21 122 printf("Time of day is %d \n \r", timeofday);
chri721u 3:c21057907d21 123 timecount = 0;
chri721u 3:c21057907d21 124 if (timeofday) {
chri721u 3:c21057907d21 125 DayMode();
chri721u 3:c21057907d21 126 } else {
chri721u 3:c21057907d21 127 NightMode();
chri721u 3:c21057907d21 128 }
chri721u 3:c21057907d21 129 }
chri721u 3:c21057907d21 130 } else if(simmode == 0) {
chri721u 3:c21057907d21 131 timecount++;
chri721u 3:c21057907d21 132 wait(1);
chri721u 3:c21057907d21 133 if (timecount == 721) {
chri721u 3:c21057907d21 134 timeofday = !timeofday;
chri721u 3:c21057907d21 135 timecount = 0;
chri721u 3:c21057907d21 136 if (timeofday) {
chri721u 3:c21057907d21 137 DayMode();
chri721u 3:c21057907d21 138 } else {
chri721u 3:c21057907d21 139 NightMode();
chri721u 3:c21057907d21 140 }
chri721u 2:739ba85b7a90 141 }
chri721u 1:4363657c576d 142 }
chri721u 0:a5831f680465 143 }
chri721u 0:a5831f680465 144 }
chri721u 0:a5831f680465 145
chri721u 2:739ba85b7a90 146 void DayMode()
chri721u 0:a5831f680465 147 {
chri721u 2:739ba85b7a90 148 BSP_LCD_Clear(LCD_COLOR_WHITE);
chri721u 2:739ba85b7a90 149 BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
chri721u 2:739ba85b7a90 150 BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
chri721u 3:c21057907d21 151 BSP_LCD_DisplayStringAt(0, 0, (uint8_t *) " Time: Day ", RIGHT_MODE);
chri721u 0:a5831f680465 152 }
chri721u 2:739ba85b7a90 153
chri721u 2:739ba85b7a90 154 void NightMode()
chri721u 2:739ba85b7a90 155 {
chri721u 2:739ba85b7a90 156 BSP_LCD_Clear(LCD_COLOR_BLACK);
chri721u 2:739ba85b7a90 157 BSP_LCD_SetBackColor(LCD_COLOR_BLACK);
chri721u 2:739ba85b7a90 158 BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
chri721u 3:c21057907d21 159 BSP_LCD_DisplayStringAt(0, 0, (uint8_t *) " Time: Night ", RIGHT_MODE);
chri721u 3:c21057907d21 160 }
chri721u 3:c21057907d21 161
chri721u 3:c21057907d21 162 void Temp_Display()
chri721u 3:c21057907d21 163 {
chri721u 3:c21057907d21 164 while(1) {
chri721u 3:c21057907d21 165 // Monitor temperatures and display results on LCD screen
chri721u 3:c21057907d21 166 sprintf((char*)text, "Temperature: %.1f C ", temp);
chri721u 3:c21057907d21 167 BSP_LCD_DisplayStringAt(0, 150, (uint8_t *)&text, CENTER_MODE);
chri721u 3:c21057907d21 168 wait(1);
chri721u 3:c21057907d21 169 }
chri721u 3:c21057907d21 170 }
chri721u 3:c21057907d21 171
chri721u 3:c21057907d21 172 void Humid_Display()
chri721u 3:c21057907d21 173 {
chri721u 3:c21057907d21 174 while(1) {
chri721u 3:c21057907d21 175 // Monitor humidity and display results on LCD screen
chri721u 3:c21057907d21 176 sprintf((char*)text, "Humidity: %.1f ", humid);
chri721u 3:c21057907d21 177 BSP_LCD_DisplayStringAt(0, 200, (uint8_t *)&text, CENTER_MODE);
chri721u 3:c21057907d21 178 wait(1);
chri721u 3:c21057907d21 179 }
chri721u 3:c21057907d21 180 }
chri721u 3:c21057907d21 181
chri721u 3:c21057907d21 182 void Temp_Check()
chri721u 3:c21057907d21 183 {
chri721u 3:c21057907d21 184 while(1) {
chri721u 3:c21057907d21 185 temp = Temp_Sensor.read() * 100 / 2; // Read temperature sensor input. Since this is flawed, correct to adjust.
chri721u 3:c21057907d21 186 if(timeofday) { // If it's daytime, keep temps between 25 and 30 celsius
chri721u 3:c21057907d21 187 if (temp >= 25 && temp <= 30) {
chri721u 3:c21057907d21 188 printf("Greenhouse temperature within acceptable parameters");
chri721u 3:c21057907d21 189 wait(1);
chri721u 3:c21057907d21 190 } else if (temp < 25) {
chri721u 3:c21057907d21 191 Heat_Lamp(); // Raise temperature by turning on the heat lamps in the greenhouse
chri721u 3:c21057907d21 192 } else if (temp > 30) {
chri721u 3:c21057907d21 193 Vent_Air(); // Reduce temperature by venting the hot air out of the greenhouse
chri721u 3:c21057907d21 194 }
chri721u 3:c21057907d21 195 } else if(timeofday == false) { // If it's nighttime, keep temps between 15 and 20
chri721u 3:c21057907d21 196 if (temp >= 15 && temp <= 20) {
chri721u 3:c21057907d21 197 Temp_LED = 1;
chri721u 3:c21057907d21 198 wait(1);
chri721u 3:c21057907d21 199 } else if (temp < 15) {
chri721u 3:c21057907d21 200 Heat_Lamp();
chri721u 3:c21057907d21 201
chri721u 3:c21057907d21 202 } else if (temp > 20) {
chri721u 3:c21057907d21 203 Vent_Air();
chri721u 3:c21057907d21 204 }
chri721u 3:c21057907d21 205 }
chri721u 3:c21057907d21 206 }
chri721u 3:c21057907d21 207 }
chri721u 3:c21057907d21 208
chri721u 3:c21057907d21 209 void Humid_Check()
chri721u 3:c21057907d21 210 {
chri721u 3:c21057907d21 211 while(1) {
chri721u 3:c21057907d21 212 humid = Humid_Sensor.ReadHumidity();
chri721u 3:c21057907d21 213 int dataread = Humid_Sensor.readData(); // No idea why, but the humidity won't display on screen without it.
chri721u 3:c21057907d21 214 if (humid >= 55 && humid <= 65) { // Check if humidity is within acceptable parameters (55% - 65%)
chri721u 3:c21057907d21 215 printf("Greenhouse humidity is within acceptable parameters");
chri721u 3:c21057907d21 216 } else if (humid < 55) {
chri721u 3:c21057907d21 217 Spray_Water(); // Raise humidity by spraying water into the plants and greenhouse.
chri721u 3:c21057907d21 218 } else if ( humid > 65) {
chri721u 3:c21057907d21 219 Dehumidifier(); // Lower humidity by dehumidifying the greenhouse.
chri721u 3:c21057907d21 220 }
chri721u 3:c21057907d21 221 }
chri721u 3:c21057907d21 222 }
chri721u 3:c21057907d21 223
chri721u 3:c21057907d21 224 void Vent_Air()
chri721u 3:c21057907d21 225 {
chri721u 3:c21057907d21 226 Window_LED = 1;
chri721u 3:c21057907d21 227 wait(1);
chri721u 3:c21057907d21 228 Window_LED = 0;
chri721u 3:c21057907d21 229 if(simmode) {
chri721u 3:c21057907d21 230 printf("Greenhouse temperature above sustainable levels. Venting air from Greenhouse to rectify. \n \r");
chri721u 3:c21057907d21 231 }
chri721u 3:c21057907d21 232 }
chri721u 3:c21057907d21 233
chri721u 3:c21057907d21 234 void Heat_Lamp()
chri721u 3:c21057907d21 235 {
chri721u 2:739ba85b7a90 236 Light_LED = 1;
chri721u 3:c21057907d21 237 wait(1);
chri721u 3:c21057907d21 238 Light_LED = 0;
chri721u 3:c21057907d21 239 if(simmode) {
chri721u 3:c21057907d21 240 printf("Greenhouse temperature below acceptable levels. Turning on heat lamps to rectify. \n \r");
chri721u 3:c21057907d21 241 }
chri721u 3:c21057907d21 242 }
chri721u 3:c21057907d21 243
chri721u 3:c21057907d21 244 void Dehumidifier()
chri721u 3:c21057907d21 245 {
chri721u 3:c21057907d21 246 Water_LED = 1;
chri721u 3:c21057907d21 247 wait(0.5);
chri721u 3:c21057907d21 248 Water_LED = 0;
chri721u 3:c21057907d21 249 if(simmode) {
chri721u 3:c21057907d21 250 printf("Greenhouse humidity above acceptable levels. Dehumidifying to rectify. \n \r");
chri721u 3:c21057907d21 251 }
chri721u 3:c21057907d21 252 }
chri721u 3:c21057907d21 253
chri721u 3:c21057907d21 254 void Spray_Water()
chri721u 3:c21057907d21 255 {
chri721u 3:c21057907d21 256 Water_LED = 1;
chri721u 3:c21057907d21 257 wait(1);
chri721u 3:c21057907d21 258 Water_LED = 0;
chri721u 3:c21057907d21 259 if(simmode) {
chri721u 3:c21057907d21 260 printf("Greenhouse humidity below acceptable levels. Spraying water to rectify. \n \r");
chri721u 3:c21057907d21 261 }
chri721u 2:739ba85b7a90 262 }