Fengrui Chenchen Zuo / Mbed 2 deprecated Final_Project

Fengrui Zuo, Benjamin Leverett, Rahil Ajani, Kombundit Chitranuwatkul

Dependencies:   mbed mbed-rtos 4DGL-uLCD-SE SDFileSystem ATParser

main.cpp@5:1fe352831712, 2020-04-29 (annotated)

Committer:
chenchen2020
Date:
Wed Apr 29 03:09:00 2020 +0000
Revision:
5:1fe352831712
Parent:
4:57e7983c861c
Child:
6:8a29a9680023
Final_Version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
chenchen2020 0:bedc25613430 1 #include "mbed.h"
chenchen2020 0:bedc25613430 2 #include "rtos.h"
chenchen2020 0:bedc25613430 3 #include "ATParser.h"
chenchen2020 0:bedc25613430 4 #include "uLCD_4DGL.h"
chenchen2020 0:bedc25613430 5 #include "SDFileSystem.h"
chenchen2020 2:f65d4206b47b 6 #include "Speaker.h"
chenchen2020 0:bedc25613430 7 //#include "wave_player.h"
chenchen2020 0:bedc25613430 8 #include <string>
chenchen2020 2:f65d4206b47b 9 #include <iostream>
chenchen2020 0:bedc25613430 10 using namespace std;
chenchen2020 0:bedc25613430 11
chenchen2020 0:bedc25613430 12 //General setups
chenchen2020 0:bedc25613430 13 DigitalOut cmdMode(p18);
chenchen2020 0:bedc25613430 14 Serial pc(USBTX, USBRX);
chenchen2020 0:bedc25613430 15 BufferedSerial ble(p13,p14);
chenchen2020 0:bedc25613430 16 DigitalOut cmdstuff(p18);
chenchen2020 2:f65d4206b47b 17 DigitalOut greenLED(p24);
chenchen2020 2:f65d4206b47b 18 DigitalOut yellowLED(p25);
chenchen2020 2:f65d4206b47b 19 DigitalOut redLED(p26);
chenchen2020 0:bedc25613430 20 uLCD_4DGL uLCD(p28,p27,p30);
chenchen2020 0:bedc25613430 21 SDFileSystem sd(p5, p6, p7, p8, "sd");
chenchen2020 4:57e7983c861c 22 PwmOut speaker(p21);
chenchen2020 4:57e7983c861c 23 DigitalOut speaker_on(p23);
chenchen2020 0:bedc25613430 24
chenchen2020 0:bedc25613430 25 //AT command data handlers
chenchen2020 2:f65d4206b47b 26 bool datalogged = 0;
chenchen2020 4:57e7983c861c 27 //bool changed = 0;
chenchen2020 0:bedc25613430 28 char delimiter[] = "\r\n";
chenchen2020 0:bedc25613430 29 int buffer_size = 256;
chenchen2020 0:bedc25613430 30 int timeout = 100;
chenchen2020 0:bedc25613430 31 bool debug = false;
chenchen2020 0:bedc25613430 32 ATParser at(ble, delimiter, buffer_size, timeout, debug);
chenchen2020 0:bedc25613430 33 char buffer[10];
chenchen2020 0:bedc25613430 34 volatile int risk_level = 0;
chenchen2020 4:57e7983c861c 35 //speaker_on = 0;
chenchen2020 0:bedc25613430 36
chenchen2020 2:f65d4206b47b 37 //RTOS Mutex Lock
chenchen2020 0:bedc25613430 38 Mutex mutex_lock;
chenchen2020 0:bedc25613430 39
chenchen2020 4:57e7983c861c 40 time_t seconds;
chenchen2020 4:57e7983c861c 41
chenchen2020 0:bedc25613430 42 //Global Data points and arrays
chenchen2020 0:bedc25613430 43 int averageCount = 0;
chenchen2020 0:bedc25613430 44 volatile int RSSI_array[15];
chenchen2020 0:bedc25613430 45
chenchen2020 2:f65d4206b47b 46 //This portion of the code handles RSSI readings
chenchen2020 0:bedc25613430 47
chenchen2020 2:f65d4206b47b 48 int calculate_average(volatile int *input, int size)
chenchen2020 2:f65d4206b47b 49 {
chenchen2020 0:bedc25613430 50 int average;
chenchen2020 2:f65d4206b47b 51 for(int i = 0; i< size; i++) {
chenchen2020 0:bedc25613430 52 average = average + input[i];
chenchen2020 0:bedc25613430 53 }
chenchen2020 0:bedc25613430 54 average = average/size;
chenchen2020 0:bedc25613430 55 return average;
chenchen2020 0:bedc25613430 56 }
chenchen2020 0:bedc25613430 57
chenchen2020 2:f65d4206b47b 58 void parse_RSSI()
chenchen2020 2:f65d4206b47b 59 {
chenchen2020 2:f65d4206b47b 60 mutex_lock.lock();
chenchen2020 1:8eb0ee57df9f 61 at.send("AT+BLEGETRSSI") && at.read(buffer, 10);
chenchen2020 2:f65d4206b47b 62 if(buffer[0] == '-') {
chenchen2020 2:f65d4206b47b 63 datalogged = 1;
chenchen2020 0:bedc25613430 64 pc.printf("RSSI: ");
chenchen2020 0:bedc25613430 65 pc.putc(buffer[1]);
chenchen2020 0:bedc25613430 66 pc.putc(buffer[2]);
chenchen2020 0:bedc25613430 67 pc.printf("\n");
chenchen2020 4:57e7983c861c 68 int digit1 = buffer[1] - 48; //Converts char to int
chenchen2020 0:bedc25613430 69 int digit2 = buffer[2] - 48;
chenchen2020 0:bedc25613430 70 int total = 10*digit1 + digit2;
chenchen2020 2:f65d4206b47b 71 if (averageCount <= 15) {
chenchen2020 0:bedc25613430 72 RSSI_array[averageCount] = total;
chenchen2020 0:bedc25613430 73 }
chenchen2020 2:f65d4206b47b 74 averageCount++;
chenchen2020 2:f65d4206b47b 75 if(averageCount > 15 && buffer[0] == '-') {
chenchen2020 0:bedc25613430 76 averageCount = 0;
chenchen2020 0:bedc25613430 77 int average = calculate_average(RSSI_array, 15);
chenchen2020 2:f65d4206b47b 78 if(average < 55) {
chenchen2020 0:bedc25613430 79 risk_level = 3;
chenchen2020 2:f65d4206b47b 80 } else if(average > 55 && average < 70) {
chenchen2020 0:bedc25613430 81 risk_level = 2;
chenchen2020 2:f65d4206b47b 82 } else if(average > 70 && average < 90) {
chenchen2020 0:bedc25613430 83 risk_level = 1;
chenchen2020 2:f65d4206b47b 84 } else {
chenchen2020 2:f65d4206b47b 85 risk_level = 0;
chenchen2020 0:bedc25613430 86 }
chenchen2020 0:bedc25613430 87 }
chenchen2020 0:bedc25613430 88 pc.printf("Risk level: ");
chenchen2020 0:bedc25613430 89 pc.printf("%i\n", risk_level);
chenchen2020 2:f65d4206b47b 90 } else {
chenchen2020 0:bedc25613430 91 pc.printf("Disconnected\n");
chenchen2020 2:f65d4206b47b 92 datalogged = 0;
chenchen2020 2:f65d4206b47b 93 }
chenchen2020 2:f65d4206b47b 94 mutex_lock.unlock();
chenchen2020 2:f65d4206b47b 95 }
chenchen2020 2:f65d4206b47b 96
chenchen2020 4:57e7983c861c 97
chenchen2020 2:f65d4206b47b 98 void speaker_alarm()
chenchen2020 2:f65d4206b47b 99 {
chenchen2020 4:57e7983c861c 100 while(1) {
chenchen2020 4:57e7983c861c 101 if(risk_level == 2 && datalogged) {
chenchen2020 5:1fe352831712 102 for (int i=0; i<5; i=i+2) {
chenchen2020 4:57e7983c861c 103 speaker.period(1.0/969.0);
chenchen2020 4:57e7983c861c 104 speaker = float(i)/50.0;
chenchen2020 4:57e7983c861c 105 wait(.8);
chenchen2020 4:57e7983c861c 106 speaker.period(1.0/800.0);
chenchen2020 4:57e7983c861c 107 wait(.8);
chenchen2020 4:57e7983c861c 108 }
chenchen2020 5:1fe352831712 109 speaker = 0;
chenchen2020 4:57e7983c861c 110 } else if(risk_level == 3 && datalogged) {
chenchen2020 5:1fe352831712 111 for (int i=0; i<5; i=i+2) {
chenchen2020 4:57e7983c861c 112 speaker.period(1.0/969.0);
chenchen2020 4:57e7983c861c 113 speaker = float(i)/50.0;
chenchen2020 4:57e7983c861c 114 wait(.25);
chenchen2020 4:57e7983c861c 115 speaker.period(1.0/800.0);
chenchen2020 4:57e7983c861c 116 wait(.25);
chenchen2020 4:57e7983c861c 117 }
chenchen2020 5:1fe352831712 118 speaker = 0;
chenchen2020 5:1fe352831712 119 } else if(risk_level <= 1 && datalogged){
chenchen2020 5:1fe352831712 120 for (int i=0; i<5; i=i+2) {
chenchen2020 5:1fe352831712 121 speaker.period(0);
chenchen2020 5:1fe352831712 122 speaker = 0;
chenchen2020 5:1fe352831712 123 }
chenchen2020 5:1fe352831712 124 } else{
chenchen2020 5:1fe352831712 125 speaker = 0;
chenchen2020 2:f65d4206b47b 126 }
chenchen2020 2:f65d4206b47b 127 }
chenchen2020 2:f65d4206b47b 128 }
chenchen2020 4:57e7983c861c 129
chenchen2020 2:f65d4206b47b 130
chenchen2020 2:f65d4206b47b 131 void logging_SD_card()
chenchen2020 2:f65d4206b47b 132 {
chenchen2020 4:57e7983c861c 133 while(1) {
chenchen2020 4:57e7983c861c 134 mutex_lock.lock();
chenchen2020 4:57e7983c861c 135 FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
chenchen2020 4:57e7983c861c 136 if(fp == NULL) {
chenchen2020 4:57e7983c861c 137 error("Could not open file for write\n");
chenchen2020 4:57e7983c861c 138 }
chenchen2020 2:f65d4206b47b 139
chenchen2020 4:57e7983c861c 140 if(risk_level <= 1) {
chenchen2020 4:57e7983c861c 141 fprintf(fp, "Risk level 1");
chenchen2020 4:57e7983c861c 142 fprintf(fp, "Time", ctime(&seconds));
chenchen2020 4:57e7983c861c 143 } else if(risk_level == 2) {
chenchen2020 4:57e7983c861c 144 fprintf(fp, "Risk level 2");
chenchen2020 4:57e7983c861c 145 fprintf(fp, "Time", ctime(&seconds));
chenchen2020 4:57e7983c861c 146 } else if(risk_level == 3) {
chenchen2020 4:57e7983c861c 147 fprintf(fp, "Risk level 3");
chenchen2020 4:57e7983c861c 148 fprintf(fp, "Time", ctime(&seconds));
chenchen2020 4:57e7983c861c 149 }
chenchen2020 4:57e7983c861c 150 fclose(fp);
chenchen2020 4:57e7983c861c 151 mutex_lock.unlock();
chenchen2020 4:57e7983c861c 152 }
chenchen2020 2:f65d4206b47b 153 }
chenchen2020 2:f65d4206b47b 154
chenchen2020 4:57e7983c861c 155
chenchen2020 4:57e7983c861c 156
chenchen2020 2:f65d4206b47b 157 void blink_leds()
chenchen2020 2:f65d4206b47b 158 {
chenchen2020 4:57e7983c861c 159 while(1) {
chenchen2020 4:57e7983c861c 160 if(risk_level <= 1 && datalogged) {
chenchen2020 2:f65d4206b47b 161 greenLED = 1;
chenchen2020 2:f65d4206b47b 162 redLED = 0;
chenchen2020 2:f65d4206b47b 163 yellowLED = 0;
chenchen2020 4:57e7983c861c 164 } else if(risk_level == 2 && datalogged) {
chenchen2020 2:f65d4206b47b 165 yellowLED = 1;
chenchen2020 2:f65d4206b47b 166 greenLED = 0;
chenchen2020 2:f65d4206b47b 167 redLED = 0;
chenchen2020 4:57e7983c861c 168 } else if(risk_level == 3 && datalogged) {
chenchen2020 2:f65d4206b47b 169 redLED = 1;
chenchen2020 2:f65d4206b47b 170 yellowLED = 0;
chenchen2020 2:f65d4206b47b 171 greenLED = 0;
chenchen2020 4:57e7983c861c 172 } else {
chenchen2020 2:f65d4206b47b 173 redLED = 0;
chenchen2020 2:f65d4206b47b 174 yellowLED = 0;
chenchen2020 2:f65d4206b47b 175 greenLED = 0;
chenchen2020 2:f65d4206b47b 176 }
chenchen2020 0:bedc25613430 177 }
chenchen2020 0:bedc25613430 178 }
chenchen2020 0:bedc25613430 179
chenchen2020 2:f65d4206b47b 180 void display_ulcd()
chenchen2020 2:f65d4206b47b 181 {
chenchen2020 3:2a4bee05d0c1 182 mutex_lock.lock();
chenchen2020 3:2a4bee05d0c1 183 uLCD.color(WHITE);
chenchen2020 3:2a4bee05d0c1 184 mutex_lock.unlock();
chenchen2020 4:57e7983c861c 185 while(1) {
chenchen2020 2:f65d4206b47b 186 mutex_lock.lock();
chenchen2020 4:57e7983c861c 187 if(risk_level <= 1 && datalogged) {
chenchen2020 4:57e7983c861c 188 mutex_lock.lock();
chenchen2020 3:2a4bee05d0c1 189 uLCD.cls();
chenchen2020 3:2a4bee05d0c1 190 uLCD.locate(5, 7);
chenchen2020 3:2a4bee05d0c1 191 uLCD.text_width(2);
chenchen2020 3:2a4bee05d0c1 192 uLCD.text_height(2);
chenchen2020 3:2a4bee05d0c1 193 uLCD.background_color(GREEN);
chenchen2020 3:2a4bee05d0c1 194 uLCD.textbackground_color(GREEN);
chenchen2020 3:2a4bee05d0c1 195 uLCD.printf("Safe");
chenchen2020 4:57e7983c861c 196 mutex_lock.unlock();
chenchen2020 4:57e7983c861c 197 } else if(risk_level == 2 && datalogged) {
chenchen2020 4:57e7983c861c 198 mutex_lock.lock();
chenchen2020 3:2a4bee05d0c1 199 uLCD.cls();
chenchen2020 3:2a4bee05d0c1 200 uLCD.locate(1, 7);
chenchen2020 3:2a4bee05d0c1 201 uLCD.text_width(2);
chenchen2020 3:2a4bee05d0c1 202 uLCD.text_height(2);
chenchen2020 3:2a4bee05d0c1 203 uLCD.background_color(0xFFFF00);
chenchen2020 3:2a4bee05d0c1 204 uLCD.textbackground_color(0xFFFF00);
chenchen2020 3:2a4bee05d0c1 205 uLCD.printf("Cautious");
chenchen2020 4:57e7983c861c 206 mutex_lock.unlock();
chenchen2020 4:57e7983c861c 207 } else if(risk_level == 3 && datalogged) {
chenchen2020 4:57e7983c861c 208 mutex_lock.lock();
chenchen2020 3:2a4bee05d0c1 209 uLCD.cls();
chenchen2020 3:2a4bee05d0c1 210 uLCD.locate(3, 7);
chenchen2020 3:2a4bee05d0c1 211 uLCD.text_width(2);
chenchen2020 3:2a4bee05d0c1 212 uLCD.text_height(2);
chenchen2020 3:2a4bee05d0c1 213 uLCD.background_color(RED);
chenchen2020 3:2a4bee05d0c1 214 uLCD.textbackground_color(RED);
chenchen2020 3:2a4bee05d0c1 215 uLCD.printf("Hazard");
chenchen2020 4:57e7983c861c 216 mutex_lock.unlock();
chenchen2020 2:f65d4206b47b 217 }
chenchen2020 2:f65d4206b47b 218 mutex_lock.unlock();
chenchen2020 2:f65d4206b47b 219 }
chenchen2020 0:bedc25613430 220 }
chenchen2020 0:bedc25613430 221
chenchen2020 0:bedc25613430 222 int main()
chenchen2020 0:bedc25613430 223 {
chenchen2020 4:57e7983c861c 224 speaker_on = 0;
chenchen2020 0:bedc25613430 225 cmdstuff = 1;
chenchen2020 0:bedc25613430 226 at.send("AT") && at.recv("OK");
chenchen2020 0:bedc25613430 227 at.send("AT+AB ChangeDefaultBaud [9600]", 3) && at.recv("OK");
chenchen2020 0:bedc25613430 228 pc.baud(9600);
chenchen2020 0:bedc25613430 229 ble.baud(9600);
chenchen2020 2:f65d4206b47b 230
chenchen2020 4:57e7983c861c 231 Thread SD_Thread();
chenchen2020 2:f65d4206b47b 232 Thread ULCD_Thread(display_ulcd);
chenchen2020 2:f65d4206b47b 233 Thread LED_Thread(blink_leds);
chenchen2020 4:57e7983c861c 234 Thread Speaker_Thread(speaker_alarm);
chenchen2020 4:57e7983c861c 235
chenchen2020 0:bedc25613430 236 while(1) {
chenchen2020 0:bedc25613430 237 parse_RSSI();
chenchen2020 0:bedc25613430 238 }
chenchen2020 0:bedc25613430 239 }