Ebrahim Atya / Mbed 2 deprecated grpass_clock

Group assignment alarm clock

Dependencies:   mbed TextLCD

main.cpp@0:65f054e83dac, 2019-05-21 (annotated)

Committer:
ebrahimatya
Date:
Tue May 21 08:29:41 2019 +0000
Revision:
0:65f054e83dac
Child:
4:61d3a7c1b411
init

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ebrahimatya 0:65f054e83dac 1 #include "main.h"
ebrahimatya 0:65f054e83dac 2
ebrahimatya 0:65f054e83dac 3 /*******************************************************************
ebrahimatya 0:65f054e83dac 4 * Print_lcd
ebrahimatya 0:65f054e83dac 5 *
ebrahimatya 0:65f054e83dac 6 * This function clears the LCD, then either prints 1. the alarm time
ebrahimatya 0:65f054e83dac 7 * or 2. the current time and alarm clock menu state.
ebrahimatya 0:65f054e83dac 8 ******************************************************************/
ebrahimatya 0:65f054e83dac 9 void print_lcd()
ebrahimatya 0:65f054e83dac 10 {
ebrahimatya 0:65f054e83dac 11 lcd.cls();
ebrahimatya 0:65f054e83dac 12 /* Menu options 2 and above deal with the alarm */
ebrahimatya 0:65f054e83dac 13 if (menu > 1)
ebrahimatya 0:65f054e83dac 14 print_time(ahour, amin);
ebrahimatya 0:65f054e83dac 15 else
ebrahimatya 0:65f054e83dac 16 print_time(cTime->tm_hour, cTime->tm_min);
ebrahimatya 0:65f054e83dac 17 print_menu();
ebrahimatya 0:65f054e83dac 18 }
ebrahimatya 0:65f054e83dac 19
ebrahimatya 0:65f054e83dac 20 /******************************************************************
ebrahimatya 0:65f054e83dac 21 * Print_time
ebrahimatya 0:65f054e83dac 22 *
ebrahimatya 0:65f054e83dac 23 * This function takes an hour(in 24hr time) and a minute and
ebrahimatya 0:65f054e83dac 24 * prints the correct format to the lcd.
ebrahimatya 0:65f054e83dac 25 *****************************************************************/
ebrahimatya 0:65f054e83dac 26 void print_time(int hour, int minute)
ebrahimatya 0:65f054e83dac 27 {
ebrahimatya 0:65f054e83dac 28 /* Variable tmphr is 24 hour time adjusted for timezone */
ebrahimatya 0:65f054e83dac 29 int tmphr = hour + timezone;
ebrahimatya 0:65f054e83dac 30 while (tmphr < 0)
ebrahimatya 0:65f054e83dac 31 tmphr += 24;
ebrahimatya 0:65f054e83dac 32 tmphr %= 24;
ebrahimatya 0:65f054e83dac 33
ebrahimatya 0:65f054e83dac 34 /* Variable printhr is 12 hour time for printing */
ebrahimatya 0:65f054e83dac 35 int printhr = tmphr % 12;
ebrahimatya 0:65f054e83dac 36 if (printhr == 0)
ebrahimatya 0:65f054e83dac 37 printhr += 12;
ebrahimatya 0:65f054e83dac 38 lcd.printf("%2d:%02d ", printhr, minute);
ebrahimatya 0:65f054e83dac 39
ebrahimatya 0:65f054e83dac 40 /* tmphr allows for checking of AM/PM */
ebrahimatya 0:65f054e83dac 41 if ((tmphr > 11) && (tmphr < 24))
ebrahimatya 0:65f054e83dac 42 lcd.printf("PM\n");
ebrahimatya 0:65f054e83dac 43 else
ebrahimatya 0:65f054e83dac 44 lcd.printf("AM\n");
ebrahimatya 0:65f054e83dac 45 }
ebrahimatya 0:65f054e83dac 46
ebrahimatya 0:65f054e83dac 47 /*******************************************************************
ebrahimatya 0:65f054e83dac 48 * Print_menu
ebrahimatya 0:65f054e83dac 49 *
ebrahimatya 0:65f054e83dac 50 * This function prints the menu state of the alarm clock to the LCD.
ebrahimatya 0:65f054e83dac 51 * The menu options are 1. Viewing current time 2. Setting Timezone
ebrahimatya 0:65f054e83dac 52 * 3. Setting alarm hour 4. Setting alarm minute 5. Toggling alarm
ebrahimatya 0:65f054e83dac 53 ******************************************************************/
ebrahimatya 0:65f054e83dac 54 void print_menu()
ebrahimatya 0:65f054e83dac 55 {
ebrahimatya 0:65f054e83dac 56 switch (menu){
ebrahimatya 0:65f054e83dac 57 case 0:
ebrahimatya 0:65f054e83dac 58 break;
ebrahimatya 0:65f054e83dac 59 case 1:
ebrahimatya 0:65f054e83dac 60 lcd.printf("TZ is (UTC) %+d\n", timezone);
ebrahimatya 0:65f054e83dac 61 break;
ebrahimatya 0:65f054e83dac 62 case 2:
ebrahimatya 0:65f054e83dac 63 lcd.printf("Set Alarm Hour\n");
ebrahimatya 0:65f054e83dac 64 break;
ebrahimatya 0:65f054e83dac 65 case 3:
ebrahimatya 0:65f054e83dac 66 lcd.printf("Set Alarm Min\n");
ebrahimatya 0:65f054e83dac 67 break;
ebrahimatya 0:65f054e83dac 68 case 4:
ebrahimatya 0:65f054e83dac 69 lcd.printf("Alarm is ");
ebrahimatya 0:65f054e83dac 70 if (alarmstate == false)
ebrahimatya 0:65f054e83dac 71 lcd.printf("Off\n");
ebrahimatya 0:65f054e83dac 72 else
ebrahimatya 0:65f054e83dac 73 lcd.printf("On\n");
ebrahimatya 0:65f054e83dac 74 break;
ebrahimatya 0:65f054e83dac 75 default:
ebrahimatya 0:65f054e83dac 76 lcd.printf("Invalid menu %d\n", menu);
ebrahimatya 0:65f054e83dac 77 break;
ebrahimatya 0:65f054e83dac 78 }
ebrahimatya 0:65f054e83dac 79 }
ebrahimatya 0:65f054e83dac 80
ebrahimatya 0:65f054e83dac 81 /******************************************************************
ebrahimatya 0:65f054e83dac 82 * Change_menu
ebrahimatya 0:65f054e83dac 83 *
ebrahimatya 0:65f054e83dac 84 * This function uses a dedicated pushbutton that changes the menu.
ebrahimatya 0:65f054e83dac 85 * The state variable, menu, gives the user the ability to cycle
ebrahimatya 0:65f054e83dac 86 * through the 5 alarm clock menus.
ebrahimatya 0:65f054e83dac 87 *****************************************************************/
ebrahimatya 0:65f054e83dac 88 void change_menu()
ebrahimatya 0:65f054e83dac 89 {
ebrahimatya 0:65f054e83dac 90 alarm_snooze();
ebrahimatya 0:65f054e83dac 91 menu = (menu + 1) % 5;
ebrahimatya 0:65f054e83dac 92 print_lcd();
ebrahimatya 0:65f054e83dac 93 }
ebrahimatya 0:65f054e83dac 94
ebrahimatya 0:65f054e83dac 95 /******************************************************************
ebrahimatya 0:65f054e83dac 96 * Push_plus
ebrahimatya 0:65f054e83dac 97 *
ebrahimatya 0:65f054e83dac 98 * This function uses a dedicated pushbutton to only increment or
ebrahimatya 0:65f054e83dac 99 * "Add" the value of variables of an alarm clock i.e. minute, hour,
ebrahimatya 0:65f054e83dac 100 * time zone
ebrahimatya 0:65f054e83dac 101 *****************************************************************/
ebrahimatya 0:65f054e83dac 102 void push_plus()
ebrahimatya 0:65f054e83dac 103 {
ebrahimatya 0:65f054e83dac 104 alarm_snooze();
ebrahimatya 0:65f054e83dac 105 button_press(1);
ebrahimatya 0:65f054e83dac 106 }
ebrahimatya 0:65f054e83dac 107
ebrahimatya 0:65f054e83dac 108 /******************************************************************
ebrahimatya 0:65f054e83dac 109 * Push_minus
ebrahimatya 0:65f054e83dac 110 *
ebrahimatya 0:65f054e83dac 111 * This function uses a dedicated pushbutton to only decrement
ebrahimatya 0:65f054e83dac 112 * or "Subtract" the value of variables of an alarm clock
ebrahimatya 0:65f054e83dac 113 * i.e. minute, hour, time zone
ebrahimatya 0:65f054e83dac 114 *****************************************************************/
ebrahimatya 0:65f054e83dac 115 void push_minus()
ebrahimatya 0:65f054e83dac 116 {
ebrahimatya 0:65f054e83dac 117 alarm_snooze();
ebrahimatya 0:65f054e83dac 118 button_press(-1);
ebrahimatya 0:65f054e83dac 119 }
ebrahimatya 0:65f054e83dac 120
ebrahimatya 0:65f054e83dac 121 /******************************************************************
ebrahimatya 0:65f054e83dac 122 * Button_press
ebrahimatya 0:65f054e83dac 123 *
ebrahimatya 0:65f054e83dac 124 * This function performs an action based on which menu item is
ebrahimatya 0:65f054e83dac 125 * currently selected. It is called whenever the "Add" or
ebrahimatya 0:65f054e83dac 126 * "Subtract" button is pressed.
ebrahimatya 0:65f054e83dac 127 *****************************************************************/
ebrahimatya 0:65f054e83dac 128 void button_press(int input)
ebrahimatya 0:65f054e83dac 129 {
ebrahimatya 0:65f054e83dac 130 switch (menu)
ebrahimatya 0:65f054e83dac 131 {
ebrahimatya 0:65f054e83dac 132 case 0:
ebrahimatya 0:65f054e83dac 133 break;
ebrahimatya 0:65f054e83dac 134 case 1:
ebrahimatya 0:65f054e83dac 135 timezone += 12;
ebrahimatya 0:65f054e83dac 136 timezone += input;
ebrahimatya 0:65f054e83dac 137 while (timezone < 0)
ebrahimatya 0:65f054e83dac 138 timezone += 24;
ebrahimatya 0:65f054e83dac 139 timezone %= 24;
ebrahimatya 0:65f054e83dac 140 timezone -= 12;
ebrahimatya 0:65f054e83dac 141 break;
ebrahimatya 0:65f054e83dac 142 case 2:
ebrahimatya 0:65f054e83dac 143 ahour += input;
ebrahimatya 0:65f054e83dac 144 while (ahour < 0)
ebrahimatya 0:65f054e83dac 145 ahour += 24;
ebrahimatya 0:65f054e83dac 146 ahour %= 24;
ebrahimatya 0:65f054e83dac 147 break;
ebrahimatya 0:65f054e83dac 148 case 3:
ebrahimatya 0:65f054e83dac 149 amin += input;
ebrahimatya 0:65f054e83dac 150 while (amin < 0)
ebrahimatya 0:65f054e83dac 151 amin += 60;
ebrahimatya 0:65f054e83dac 152 amin %= 60;
ebrahimatya 0:65f054e83dac 153 break;
ebrahimatya 0:65f054e83dac 154 case 4:
ebrahimatya 0:65f054e83dac 155 alarmstate = !alarmstate; // Turn alarm on/off
ebrahimatya 0:65f054e83dac 156 break;
ebrahimatya 0:65f054e83dac 157 default:
ebrahimatya 0:65f054e83dac 158 lcd.printf("Invalid state %d\n", menu);
ebrahimatya 0:65f054e83dac 159 break;
ebrahimatya 0:65f054e83dac 160 }
ebrahimatya 0:65f054e83dac 161 print_lcd();
ebrahimatya 0:65f054e83dac 162 }
ebrahimatya 0:65f054e83dac 163
ebrahimatya 0:65f054e83dac 164 /******************************************************************
ebrahimatya 0:65f054e83dac 165 * Alarm_ring
ebrahimatya 0:65f054e83dac 166 *
ebrahimatya 0:65f054e83dac 167 * This function rings the alarm by flashing the leds
ebrahimatya 0:65f054e83dac 168 *****************************************************************/
ebrahimatya 0:65f054e83dac 169 void alarm_ring()
ebrahimatya 0:65f054e83dac 170 {
ebrahimatya 0:65f054e83dac 171 if (led == 0x0F)
ebrahimatya 0:65f054e83dac 172 led = 0;
ebrahimatya 0:65f054e83dac 173 else
ebrahimatya 0:65f054e83dac 174 led = (led << 1) | 1;
ebrahimatya 0:65f054e83dac 175 }
ebrahimatya 0:65f054e83dac 176
ebrahimatya 0:65f054e83dac 177 /******************************************************************
ebrahimatya 0:65f054e83dac 178 * Alarm_snooze
ebrahimatya 0:65f054e83dac 179 *
ebrahimatya 0:65f054e83dac 180 * This function turns off the alarm
ebrahimatya 0:65f054e83dac 181 *****************************************************************/
ebrahimatya 0:65f054e83dac 182 void alarm_snooze()
ebrahimatya 0:65f054e83dac 183 {
ebrahimatya 0:65f054e83dac 184 if (ringflag == true) {
ebrahimatya 0:65f054e83dac 185 ringflag = false;
ebrahimatya 0:65f054e83dac 186 snooze = true;
ebrahimatya 0:65f054e83dac 187 ring.detach();
ebrahimatya 0:65f054e83dac 188 led = 0;
ebrahimatya 0:65f054e83dac 189 }
ebrahimatya 0:65f054e83dac 190 }
ebrahimatya 0:65f054e83dac 191
ebrahimatya 0:65f054e83dac 192 /******************************************************************
ebrahimatya 0:65f054e83dac 193 * Alarm_check
ebrahimatya 0:65f054e83dac 194 *
ebrahimatya 0:65f054e83dac 195 * This function compares the alarm time vs the current time. Once
ebrahimatya 0:65f054e83dac 196 * alarm time and real time match it begins ringing the alarm.
ebrahimatya 0:65f054e83dac 197 * Once the times differ then it turns off the alarm.
ebrahimatya 0:65f054e83dac 198 *****************************************************************/
ebrahimatya 0:65f054e83dac 199 void alarm_check()
ebrahimatya 0:65f054e83dac 200 {
ebrahimatya 0:65f054e83dac 201 if ((cTime->tm_min == amin) && (cTime->tm_hour == ahour)) {
ebrahimatya 0:65f054e83dac 202 if ((alarmstate == true) && (ringflag == false) && (snooze == false)) {
ebrahimatya 0:65f054e83dac 203 ringflag = true;
ebrahimatya 0:65f054e83dac 204 ring.attach(&alarm_ring, .5); // Set up a Ticker for the alarm,
ebrahimatya 0:65f054e83dac 205 // calls alarm_ring every .5 seconds until stopped
ebrahimatya 0:65f054e83dac 206 }
ebrahimatya 0:65f054e83dac 207 }
ebrahimatya 0:65f054e83dac 208 else {
ebrahimatya 0:65f054e83dac 209 alarm_snooze();
ebrahimatya 0:65f054e83dac 210 snooze = false;
ebrahimatya 0:65f054e83dac 211 }
ebrahimatya 0:65f054e83dac 212 }
ebrahimatya 0:65f054e83dac 213
ebrahimatya 0:65f054e83dac 214 int main() {
ebrahimatya 0:65f054e83dac 215
ebrahimatya 0:65f054e83dac 216 /* Set up Ethernet */
ebrahimatya 0:65f054e83dac 217 lcd.cls();
ebrahimatya 0:65f054e83dac 218 lcd.printf("Setting up Eth\n");
ebrahimatya 0:65f054e83dac 219 EthernetErr ethErr = eth.setup();
ebrahimatya 0:65f054e83dac 220 if (ethErr) {
ebrahimatya 0:65f054e83dac 221 lcd.cls();
ebrahimatya 0:65f054e83dac 222 lcd.printf("Error with Eth\nNum: %d", ethErr);
ebrahimatya 0:65f054e83dac 223 return -1;
ebrahimatya 0:65f054e83dac 224 }
ebrahimatya 0:65f054e83dac 225
ebrahimatya 0:65f054e83dac 226
ebrahimatya 0:65f054e83dac 227 /* Set up NTP */
ebrahimatya 0:65f054e83dac 228 lcd.printf("Setting up NTP\n");
ebrahimatya 0:65f054e83dac 229 Host server(IpAddr(), 123, "0.uk.pool.ntp.org");
ebrahimatya 0:65f054e83dac 230 ntp.setTime(server);
ebrahimatya 0:65f054e83dac 231
ebrahimatya 0:65f054e83dac 232 /* Initialize all the interrupts for each of the pushbuttons */
ebrahimatya 0:65f054e83dac 233 statechange.rise(&change_menu);
ebrahimatya 0:65f054e83dac 234 plus.rise(&push_plus);
ebrahimatya 0:65f054e83dac 235 minus.rise(&push_minus);
ebrahimatya 0:65f054e83dac 236
ebrahimatya 0:65f054e83dac 237 /* Temporary variables for control loop */
ebrahimatya 0:65f054e83dac 238 time_t rtc_time = time(NULL);
ebrahimatya 0:65f054e83dac 239 int minute = -1;
ebrahimatya 0:65f054e83dac 240
ebrahimatya 0:65f054e83dac 241 /* Initialize alarm time */
ebrahimatya 0:65f054e83dac 242 ahour = 0;
ebrahimatya 0:65f054e83dac 243 amin = 0;
ebrahimatya 0:65f054e83dac 244
ebrahimatya 0:65f054e83dac 245 /* Main control loop */
ebrahimatya 0:65f054e83dac 246 while(1)
ebrahimatya 0:65f054e83dac 247 {
ebrahimatya 0:65f054e83dac 248 /* Update current time */
ebrahimatya 0:65f054e83dac 249 rtc_time = time(NULL);
ebrahimatya 0:65f054e83dac 250 cTime = localtime(&rtc_time);
ebrahimatya 0:65f054e83dac 251
ebrahimatya 0:65f054e83dac 252 /* Only redraw the lcd display if anything changes */
ebrahimatya 0:65f054e83dac 253 if (cTime->tm_min != minute) {
ebrahimatya 0:65f054e83dac 254 minute = cTime->tm_min;
ebrahimatya 0:65f054e83dac 255 print_lcd();
ebrahimatya 0:65f054e83dac 256
ebrahimatya 0:65f054e83dac 257 /* Update time from NTP server if it's midnight UTC */
ebrahimatya 0:65f054e83dac 258 if ((cTime->tm_min == 0) && (cTime->tm_hour == 0)) {
ebrahimatya 0:65f054e83dac 259 Host server(IpAddr(), 123, "0.north-america.pool.ntp.org");
ebrahimatya 0:65f054e83dac 260 ntp.setTime(server);
ebrahimatya 0:65f054e83dac 261 }
ebrahimatya 0:65f054e83dac 262 }
ebrahimatya 0:65f054e83dac 263
ebrahimatya 0:65f054e83dac 264 /* Check to see if the alarm should be started/stopped */
ebrahimatya 0:65f054e83dac 265 alarm_check();
ebrahimatya 0:65f054e83dac 266 }
ebrahimatya 0:65f054e83dac 267 return 0;
ebrahimatya 0:65f054e83dac 268 }