Clock - Internet alarm clock

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Patrick Jackson / Mbed 2 deprecated Clock

Internet alarm clock

Dependencies: EthernetNetIf NTPClient_NetServices mbed

main.cpp@0:df4b49a4be1a, 2010-10-07 (annotated)

Committer:: TyPatrick
Date:: Thu Oct 07 19:05:22 2010 +0000
Revision:: 0:df4b49a4be1a

Who changed what in which revision?

User	Revision	Line number	New contents of line
TyPatrick	0:df4b49a4be1a	1	#include "main.h"
TyPatrick	0:df4b49a4be1a	2
TyPatrick	0:df4b49a4be1a	3	/*******************************************************************
TyPatrick	0:df4b49a4be1a	4	* Print_lcd
TyPatrick	0:df4b49a4be1a	5	*
TyPatrick	0:df4b49a4be1a	6	* This function clears the LCD, then either prints 1. the alarm time
TyPatrick	0:df4b49a4be1a	7	* or 2. the current time and alarm clock menu state.
TyPatrick	0:df4b49a4be1a	8	******************************************************************/
TyPatrick	0:df4b49a4be1a	9	void print_lcd()
TyPatrick	0:df4b49a4be1a	10	{
TyPatrick	0:df4b49a4be1a	11	lcd.cls();
TyPatrick	0:df4b49a4be1a	12	/* Menu options 2 and above deal with the alarm */
TyPatrick	0:df4b49a4be1a	13	if (menu > 1)
TyPatrick	0:df4b49a4be1a	14	print_time(ahour, amin);
TyPatrick	0:df4b49a4be1a	15	else
TyPatrick	0:df4b49a4be1a	16	print_time(cTime->tm_hour, cTime->tm_min);
TyPatrick	0:df4b49a4be1a	17	print_menu();
TyPatrick	0:df4b49a4be1a	18	}
TyPatrick	0:df4b49a4be1a	19
TyPatrick	0:df4b49a4be1a	20	/******************************************************************
TyPatrick	0:df4b49a4be1a	21	* Print_time
TyPatrick	0:df4b49a4be1a	22	*
TyPatrick	0:df4b49a4be1a	23	* This function takes an hour(in 24hr time) and a minute and
TyPatrick	0:df4b49a4be1a	24	* prints the correct format to the lcd.
TyPatrick	0:df4b49a4be1a	25	*****************************************************************/
TyPatrick	0:df4b49a4be1a	26	void print_time(int hour, int minute)
TyPatrick	0:df4b49a4be1a	27	{
TyPatrick	0:df4b49a4be1a	28	/* Variable tmphr is 24 hour time adjusted for timezone */
TyPatrick	0:df4b49a4be1a	29	int tmphr = hour + timezone;
TyPatrick	0:df4b49a4be1a	30	while (tmphr < 0)
TyPatrick	0:df4b49a4be1a	31	tmphr += 24;
TyPatrick	0:df4b49a4be1a	32	tmphr %= 24;
TyPatrick	0:df4b49a4be1a	33
TyPatrick	0:df4b49a4be1a	34	/* Variable printhr is 12 hour time for printing */
TyPatrick	0:df4b49a4be1a	35	int printhr = tmphr % 12;
TyPatrick	0:df4b49a4be1a	36	if (printhr == 0)
TyPatrick	0:df4b49a4be1a	37	printhr += 12;
TyPatrick	0:df4b49a4be1a	38	lcd.printf("%2d:%02d ", printhr, minute);
TyPatrick	0:df4b49a4be1a	39
TyPatrick	0:df4b49a4be1a	40	/* tmphr allows for checking of AM/PM */
TyPatrick	0:df4b49a4be1a	41	if ((tmphr > 11) && (tmphr < 24))
TyPatrick	0:df4b49a4be1a	42	lcd.printf("PM\n");
TyPatrick	0:df4b49a4be1a	43	else
TyPatrick	0:df4b49a4be1a	44	lcd.printf("AM\n");
TyPatrick	0:df4b49a4be1a	45	}
TyPatrick	0:df4b49a4be1a	46
TyPatrick	0:df4b49a4be1a	47	/*******************************************************************
TyPatrick	0:df4b49a4be1a	48	* Print_menu
TyPatrick	0:df4b49a4be1a	49	*
TyPatrick	0:df4b49a4be1a	50	* This function prints the menu state of the alarm clock to the LCD.
TyPatrick	0:df4b49a4be1a	51	* The menu options are 1. Viewing current time 2. Setting Timezone
TyPatrick	0:df4b49a4be1a	52	* 3. Setting alarm hour 4. Setting alarm minute 5. Toggling alarm
TyPatrick	0:df4b49a4be1a	53	******************************************************************/
TyPatrick	0:df4b49a4be1a	54	void print_menu()
TyPatrick	0:df4b49a4be1a	55	{
TyPatrick	0:df4b49a4be1a	56	switch (menu){
TyPatrick	0:df4b49a4be1a	57	case 0:
TyPatrick	0:df4b49a4be1a	58	break;
TyPatrick	0:df4b49a4be1a	59	case 1:
TyPatrick	0:df4b49a4be1a	60	lcd.printf("TZ is (UTC) %+d\n", timezone);
TyPatrick	0:df4b49a4be1a	61	break;
TyPatrick	0:df4b49a4be1a	62	case 2:
TyPatrick	0:df4b49a4be1a	63	lcd.printf("Set Alarm Hour\n");
TyPatrick	0:df4b49a4be1a	64	break;
TyPatrick	0:df4b49a4be1a	65	case 3:
TyPatrick	0:df4b49a4be1a	66	lcd.printf("Set Alarm Min\n");
TyPatrick	0:df4b49a4be1a	67	break;
TyPatrick	0:df4b49a4be1a	68	case 4:
TyPatrick	0:df4b49a4be1a	69	lcd.printf("Alarm is ");
TyPatrick	0:df4b49a4be1a	70	if (alarmstate == false)
TyPatrick	0:df4b49a4be1a	71	lcd.printf("Off\n");
TyPatrick	0:df4b49a4be1a	72	else
TyPatrick	0:df4b49a4be1a	73	lcd.printf("On\n");
TyPatrick	0:df4b49a4be1a	74	break;
TyPatrick	0:df4b49a4be1a	75	default:
TyPatrick	0:df4b49a4be1a	76	lcd.printf("Invalid menu %d\n", menu);
TyPatrick	0:df4b49a4be1a	77	break;
TyPatrick	0:df4b49a4be1a	78	}
TyPatrick	0:df4b49a4be1a	79	}
TyPatrick	0:df4b49a4be1a	80
TyPatrick	0:df4b49a4be1a	81	/******************************************************************
TyPatrick	0:df4b49a4be1a	82	* Change_menu
TyPatrick	0:df4b49a4be1a	83	*
TyPatrick	0:df4b49a4be1a	84	* This function uses a dedicated pushbutton that changes the menu.
TyPatrick	0:df4b49a4be1a	85	* The state variable, menu, gives the user the ability to cycle
TyPatrick	0:df4b49a4be1a	86	* through the 5 alarm clock menus.
TyPatrick	0:df4b49a4be1a	87	*****************************************************************/
TyPatrick	0:df4b49a4be1a	88	void change_menu()
TyPatrick	0:df4b49a4be1a	89	{
TyPatrick	0:df4b49a4be1a	90	alarm_snooze();
TyPatrick	0:df4b49a4be1a	91	menu = (menu + 1) % 5;
TyPatrick	0:df4b49a4be1a	92	print_lcd();
TyPatrick	0:df4b49a4be1a	93	}
TyPatrick	0:df4b49a4be1a	94
TyPatrick	0:df4b49a4be1a	95	/******************************************************************
TyPatrick	0:df4b49a4be1a	96	* Push_plus
TyPatrick	0:df4b49a4be1a	97	*
TyPatrick	0:df4b49a4be1a	98	* This function uses a dedicated pushbutton to only increment or
TyPatrick	0:df4b49a4be1a	99	* "Add" the value of variables of an alarm clock i.e. minute, hour,
TyPatrick	0:df4b49a4be1a	100	* time zone
TyPatrick	0:df4b49a4be1a	101	*****************************************************************/
TyPatrick	0:df4b49a4be1a	102	void push_plus()
TyPatrick	0:df4b49a4be1a	103	{
TyPatrick	0:df4b49a4be1a	104	alarm_snooze();
TyPatrick	0:df4b49a4be1a	105	button_press(1);
TyPatrick	0:df4b49a4be1a	106	}
TyPatrick	0:df4b49a4be1a	107
TyPatrick	0:df4b49a4be1a	108	/******************************************************************
TyPatrick	0:df4b49a4be1a	109	* Push_minus
TyPatrick	0:df4b49a4be1a	110	*
TyPatrick	0:df4b49a4be1a	111	* This function uses a dedicated pushbutton to only decrement
TyPatrick	0:df4b49a4be1a	112	* or "Subtract" the value of variables of an alarm clock
TyPatrick	0:df4b49a4be1a	113	* i.e. minute, hour, time zone
TyPatrick	0:df4b49a4be1a	114	*****************************************************************/
TyPatrick	0:df4b49a4be1a	115	void push_minus()
TyPatrick	0:df4b49a4be1a	116	{
TyPatrick	0:df4b49a4be1a	117	alarm_snooze();
TyPatrick	0:df4b49a4be1a	118	button_press(-1);
TyPatrick	0:df4b49a4be1a	119	}
TyPatrick	0:df4b49a4be1a	120
TyPatrick	0:df4b49a4be1a	121	/******************************************************************
TyPatrick	0:df4b49a4be1a	122	* Button_press
TyPatrick	0:df4b49a4be1a	123	*
TyPatrick	0:df4b49a4be1a	124	* This function performs an action based on which menu item is
TyPatrick	0:df4b49a4be1a	125	* currently selected. It is called whenever the "Add" or
TyPatrick	0:df4b49a4be1a	126	* "Subtract" button is pressed.
TyPatrick	0:df4b49a4be1a	127	*****************************************************************/
TyPatrick	0:df4b49a4be1a	128	void button_press(int input)
TyPatrick	0:df4b49a4be1a	129	{
TyPatrick	0:df4b49a4be1a	130	switch (menu)
TyPatrick	0:df4b49a4be1a	131	{
TyPatrick	0:df4b49a4be1a	132	case 0:
TyPatrick	0:df4b49a4be1a	133	break;
TyPatrick	0:df4b49a4be1a	134	case 1:
TyPatrick	0:df4b49a4be1a	135	timezone += 12;
TyPatrick	0:df4b49a4be1a	136	timezone += input;
TyPatrick	0:df4b49a4be1a	137	while (timezone < 0)
TyPatrick	0:df4b49a4be1a	138	timezone += 24;
TyPatrick	0:df4b49a4be1a	139	timezone %= 24;
TyPatrick	0:df4b49a4be1a	140	timezone -= 12;
TyPatrick	0:df4b49a4be1a	141	break;
TyPatrick	0:df4b49a4be1a	142	case 2:
TyPatrick	0:df4b49a4be1a	143	ahour += input;
TyPatrick	0:df4b49a4be1a	144	while (ahour < 0)
TyPatrick	0:df4b49a4be1a	145	ahour += 24;
TyPatrick	0:df4b49a4be1a	146	ahour %= 24;
TyPatrick	0:df4b49a4be1a	147	break;
TyPatrick	0:df4b49a4be1a	148	case 3:
TyPatrick	0:df4b49a4be1a	149	amin += input;
TyPatrick	0:df4b49a4be1a	150	while (amin < 0)
TyPatrick	0:df4b49a4be1a	151	amin += 60;
TyPatrick	0:df4b49a4be1a	152	amin %= 60;
TyPatrick	0:df4b49a4be1a	153	break;
TyPatrick	0:df4b49a4be1a	154	case 4:
TyPatrick	0:df4b49a4be1a	155	alarmstate = !alarmstate; // Turn alarm on/off
TyPatrick	0:df4b49a4be1a	156	break;
TyPatrick	0:df4b49a4be1a	157	default:
TyPatrick	0:df4b49a4be1a	158	lcd.printf("Invalid state %d\n", menu);
TyPatrick	0:df4b49a4be1a	159	break;
TyPatrick	0:df4b49a4be1a	160	}
TyPatrick	0:df4b49a4be1a	161	print_lcd();
TyPatrick	0:df4b49a4be1a	162	}
TyPatrick	0:df4b49a4be1a	163
TyPatrick	0:df4b49a4be1a	164	/******************************************************************
TyPatrick	0:df4b49a4be1a	165	* Alarm_ring
TyPatrick	0:df4b49a4be1a	166	*
TyPatrick	0:df4b49a4be1a	167	* This function rings the alarm by flashing the leds
TyPatrick	0:df4b49a4be1a	168	*****************************************************************/
TyPatrick	0:df4b49a4be1a	169	void alarm_ring()
TyPatrick	0:df4b49a4be1a	170	{
TyPatrick	0:df4b49a4be1a	171	if (led == 0x0F)
TyPatrick	0:df4b49a4be1a	172	led = 0;
TyPatrick	0:df4b49a4be1a	173	else
TyPatrick	0:df4b49a4be1a	174	led = (led << 1) \| 1;
TyPatrick	0:df4b49a4be1a	175	}
TyPatrick	0:df4b49a4be1a	176
TyPatrick	0:df4b49a4be1a	177	/******************************************************************
TyPatrick	0:df4b49a4be1a	178	* Alarm_snooze
TyPatrick	0:df4b49a4be1a	179	*
TyPatrick	0:df4b49a4be1a	180	* This function turns off the alarm
TyPatrick	0:df4b49a4be1a	181	*****************************************************************/
TyPatrick	0:df4b49a4be1a	182	void alarm_snooze()
TyPatrick	0:df4b49a4be1a	183	{
TyPatrick	0:df4b49a4be1a	184	if (ringflag == true) {
TyPatrick	0:df4b49a4be1a	185	ringflag = false;
TyPatrick	0:df4b49a4be1a	186	snooze = true;
TyPatrick	0:df4b49a4be1a	187	ring.detach();
TyPatrick	0:df4b49a4be1a	188	led = 0;
TyPatrick	0:df4b49a4be1a	189	}
TyPatrick	0:df4b49a4be1a	190	}
TyPatrick	0:df4b49a4be1a	191
TyPatrick	0:df4b49a4be1a	192	/******************************************************************
TyPatrick	0:df4b49a4be1a	193	* Alarm_check
TyPatrick	0:df4b49a4be1a	194	*
TyPatrick	0:df4b49a4be1a	195	* This function compares the alarm time vs the current time. Once
TyPatrick	0:df4b49a4be1a	196	* alarm time and real time match it begins ringing the alarm.
TyPatrick	0:df4b49a4be1a	197	* Once the times differ then it turns off the alarm.
TyPatrick	0:df4b49a4be1a	198	*****************************************************************/
TyPatrick	0:df4b49a4be1a	199	void alarm_check()
TyPatrick	0:df4b49a4be1a	200	{
TyPatrick	0:df4b49a4be1a	201	if ((cTime->tm_min == amin) && (cTime->tm_hour == ahour)) {
TyPatrick	0:df4b49a4be1a	202	if ((alarmstate == true) && (ringflag == false) && (snooze == false)) {
TyPatrick	0:df4b49a4be1a	203	ringflag = true;
TyPatrick	0:df4b49a4be1a	204	ring.attach(&alarm_ring, .5); // Set up a Ticker for the alarm,
TyPatrick	0:df4b49a4be1a	205	// calls alarm_ring every .5 seconds until stopped
TyPatrick	0:df4b49a4be1a	206	}
TyPatrick	0:df4b49a4be1a	207	}
TyPatrick	0:df4b49a4be1a	208	else {
TyPatrick	0:df4b49a4be1a	209	alarm_snooze();
TyPatrick	0:df4b49a4be1a	210	snooze = false;
TyPatrick	0:df4b49a4be1a	211	}
TyPatrick	0:df4b49a4be1a	212	}
TyPatrick	0:df4b49a4be1a	213
TyPatrick	0:df4b49a4be1a	214	int main() {
TyPatrick	0:df4b49a4be1a	215
TyPatrick	0:df4b49a4be1a	216	/* Set up Ethernet */
TyPatrick	0:df4b49a4be1a	217	lcd.cls();
TyPatrick	0:df4b49a4be1a	218	lcd.printf("Setting up Eth\n");
TyPatrick	0:df4b49a4be1a	219	EthernetErr ethErr = eth.setup();
TyPatrick	0:df4b49a4be1a	220	if (ethErr) {
TyPatrick	0:df4b49a4be1a	221	lcd.cls();
TyPatrick	0:df4b49a4be1a	222	lcd.printf("Error with Eth\nNum: %d", ethErr);
TyPatrick	0:df4b49a4be1a	223	return -1;
TyPatrick	0:df4b49a4be1a	224	}
TyPatrick	0:df4b49a4be1a	225
TyPatrick	0:df4b49a4be1a	226
TyPatrick	0:df4b49a4be1a	227	/* Set up NTP */
TyPatrick	0:df4b49a4be1a	228	lcd.printf("Setting up NTP\n");
TyPatrick	0:df4b49a4be1a	229	Host server(IpAddr(), 123, "0.uk.pool.ntp.org");
TyPatrick	0:df4b49a4be1a	230	ntp.setTime(server);
TyPatrick	0:df4b49a4be1a	231
TyPatrick	0:df4b49a4be1a	232	/* Initialize all the interrupts for each of the pushbuttons */
TyPatrick	0:df4b49a4be1a	233	statechange.rise(&change_menu);
TyPatrick	0:df4b49a4be1a	234	plus.rise(&push_plus);
TyPatrick	0:df4b49a4be1a	235	minus.rise(&push_minus);
TyPatrick	0:df4b49a4be1a	236
TyPatrick	0:df4b49a4be1a	237	/* Temporary variables for control loop */
TyPatrick	0:df4b49a4be1a	238	time_t rtc_time = time(NULL);
TyPatrick	0:df4b49a4be1a	239	int minute = -1;
TyPatrick	0:df4b49a4be1a	240
TyPatrick	0:df4b49a4be1a	241	/* Initialize alarm time */
TyPatrick	0:df4b49a4be1a	242	ahour = 0;
TyPatrick	0:df4b49a4be1a	243	amin = 0;
TyPatrick	0:df4b49a4be1a	244
TyPatrick	0:df4b49a4be1a	245	/* Main control loop */
TyPatrick	0:df4b49a4be1a	246	while(1)
TyPatrick	0:df4b49a4be1a	247	{
TyPatrick	0:df4b49a4be1a	248	/* Update current time */
TyPatrick	0:df4b49a4be1a	249	rtc_time = time(NULL);
TyPatrick	0:df4b49a4be1a	250	cTime = localtime(&rtc_time);
TyPatrick	0:df4b49a4be1a	251
TyPatrick	0:df4b49a4be1a	252	/* Only redraw the lcd display if anything changes */
TyPatrick	0:df4b49a4be1a	253	if (cTime->tm_min != minute) {
TyPatrick	0:df4b49a4be1a	254	minute = cTime->tm_min;
TyPatrick	0:df4b49a4be1a	255	print_lcd();
TyPatrick	0:df4b49a4be1a	256
TyPatrick	0:df4b49a4be1a	257	/* Update time from NTP server if it's midnight UTC */
TyPatrick	0:df4b49a4be1a	258	if ((cTime->tm_min == 0) && (cTime->tm_hour == 0)) {
TyPatrick	0:df4b49a4be1a	259	Host server(IpAddr(), 123, "0.north-america.pool.ntp.org");
TyPatrick	0:df4b49a4be1a	260	ntp.setTime(server);
TyPatrick	0:df4b49a4be1a	261	}
TyPatrick	0:df4b49a4be1a	262	}
TyPatrick	0:df4b49a4be1a	263
TyPatrick	0:df4b49a4be1a	264	/* Check to see if the alarm should be started/stopped */
TyPatrick	0:df4b49a4be1a	265	alarm_check();
TyPatrick	0:df4b49a4be1a	266	}
TyPatrick	0:df4b49a4be1a	267	return 0;
TyPatrick	0:df4b49a4be1a	268	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	07 Oct 2010
Imports:	207
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	4
Followers:	7

main.cpp@0:df4b49a4be1a, 2010-10-07 (annotated)

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