發(fā)個(gè)AT89C2051制作的時(shí)鐘程序+仿真，功能還是很強(qiáng)大的，大家玩得開(kāi)心就好！

ID:862219 · 發(fā)表于 2021-1-18 22:29

// so said EVELYN the modified DOG
//#pragma less_pedantic
#define uint8_t unsigned char
#define uint16_t unsigned short int
// Clock related defines
#define CLOCK_TIMER_HIGH 0x3C
#define CLOCK_TIMER_LOW 0xD5 // original ASM source was 0xB5, but experimentation shows this should be a more accurate value
#define CLOCK_TIMER_COUNT 20
#define CLOCK_COLON_COUNT 10 // 1/2 of CLOCK_TIMER_COUNT
#define CLOCK_BLINK_COUNT 5
#define CLOCK_INCREMENT_COUNT 4

// Button related defines
#define BUTTON_PRESS 2
#define BUTTON_PRESS_LONG 40

// Display related defines
#define LED_BLANK 10
#define LED_h 11
#define LED_A 12
#define LED_L 13
#define LED_y 14
#define LED_n 15

// digit to led digit lookup table
// 1 = on, 0 = off
// a, f, b, e, d, c, g, dp
const uint8_t ledtable[] = {
0xFC, // 0
0x24, // 1
0xBA, // 2
0xAE, // 3
0x66, // 4
0xCE, // 5
0xDE, // 6
0xA4, // 7
0xFE, // 8
0xEE, // 9
0x00, // <blank>
0x56, // 'h'
0xF6, // 'A'
0x58, // 'L'
0x6E, // 'y'
0x16, // 'n'
};

// display buffer
uint8_t dbuf[4];

// clock variables
volatile uint8_t clock_hour = 12;
volatile uint8_t clock_minute = 0;
volatile uint8_t clock_second = 55;
volatile uint8_t next_second = CLOCK_TIMER_COUNT;
volatile uint8_t next_blink = CLOCK_BLINK_COUNT;
volatile uint8_t next_increment = CLOCK_INCREMENT_COUNT;

volatile bit CLOCK_RUNNING = 1;
volatile bit TWELVE_TIME = 0; // 0 = 24 hour, 1 = 12 hour

// alarm variables
volatile uint8_t alarm_hour = 12;
volatile uint8_t alarm_minute = 1;
volatile bit ALARM_ENABLE = 1;

// flag to determine whether or not to display the colon (every half second)
// can also be repurposed for blinking numbers during time set
volatile bit show_colon = 0;

// flag when to display a digit (for blinking purposes during set time mode)
volatile bit show_blink = 0;

// flag when to make the next digit increment
// used while holding down the digit increment button during set time mode
volatile bit clock_increment = 0;

// timer variables
volatile uint8_t timer_minute = 0;
volatile uint8_t timer_second = 0;
volatile bit TIMER_RUNNING = 0;

// number of ms between display refresh
//uint8_t display_dimmer = 10;

// button variables
volatile uint8_t debounce[] = {0, 0};
volatile bit B1_PRESSED = 0;
volatile bit B1_RELEASED = 0;
volatile bit B1_PRESSED_LONG = 0;
volatile bit B1_RELEASED_LONG = 0;
volatile bit B2_PRESSED = 0;
volatile bit B2_RELEASED = 0;
volatile bit B2_PRESSED_LONG = 0;
volatile bit B2_RELEASED_LONG = 0;

// clock state
typedef enum {
NORMAL,
MIN_SEC,
EDIT_HOUR,
EDIT_MIN,
SET_24H,
SHOW_ALARM,
EDIT_ALARM_HOUR,
EDIT_ALARM_MIN,
ENABLE_ALARM,
ALARMING,
TIMER
} clock_state_t;
clock_state_t clock_state = NORMAL;

// check button status and set appropriate flags
// Bn_PRESSED* flags will be set ONCE PER PRESS. This means software can UNSET these flags if desired.
void button_status(void) {

// button 1
if (P3_4 == 0) {
if (debounce[0] < BUTTON_PRESS_LONG) {
debounce[0]++;
if (debounce[0] == BUTTON_PRESS) {
B1_RELEASED = 0;
B1_PRESSED = 1;
}
if (debounce[0] == BUTTON_PRESS_LONG) {
B1_RELEASED_LONG = 0;
B1_PRESSED_LONG = 1;
}
}
} else {
debounce[0] = 0;
if (B1_PRESSED) {
B1_RELEASED = 1;
}
B1_PRESSED = 0;
if (B1_PRESSED_LONG) {
B1_RELEASED_LONG = 1;
}
B1_PRESSED_LONG = 0;
}

// button 2
if (P3_5 == 0) {
if (debounce[1] < BUTTON_PRESS_LONG) {
debounce[1]++;
if (debounce[1] == BUTTON_PRESS) {
B2_RELEASED = 0;
B2_PRESSED = 1;
}
if (debounce[1] == BUTTON_PRESS_LONG) {
B2_RELEASED_LONG = 0;
B2_PRESSED_LONG = 1;
}
}
} else {
debounce[1] = 0;
if (B2_PRESSED) {
B2_RELEASED = 1;
}
B2_PRESSED = 0;
if (B2_PRESSED_LONG) {
B2_RELEASED_LONG = 1;
}
B2_PRESSED_LONG = 0;
}
}

// timer reset
void timer_reset() {
timer_minute = 0;
timer_second = 0;
}

void increment_timer_minute() {
if (++timer_minute == 60) {
timer_minute = 0;
// increment_timer_hour();
}
}

void increment_timer_second() {
if (++timer_second == 60) {
timer_second = 0;
increment_timer_minute();
}
}

// increment hour by 1
void increment_hour() {
if (++clock_hour == 24) {
clock_hour = 0;
}
}

// increment minute by 1
void increment_minute() {
if (++clock_minute == 60) {
clock_minute = 0;
if (CLOCK_RUNNING) {
increment_hour();
}
}
}

// increment second by 1
void increment_second() {
if (++clock_second == 60) {
clock_second = 0;
if (CLOCK_RUNNING) {
increment_minute();
}
}
if (TIMER_RUNNING) {
increment_timer_second();
}
}

void increment_alarm_hour() {
if (++alarm_hour == 24) {
alarm_hour = 0;
}
}

// increment minute by 1
void increment_alarm_minute() {
if (++alarm_minute == 60) {
alarm_minute = 0;
if (CLOCK_RUNNING) {
increment_alarm_hour();
}
}
}

/* i feel like i need a time object that i pass to the increment_* functions and current time, alarm, and timer would all be objects of this type.
* but what about RUNNING flag?
* that would have to be part of the object type as well
* ...
* why do the increment_* functions test for clock_running? the thing.... for setting the time/alarm. don't increment if we're in a SET CLOCK mode
* perhaps another flag to add to the clock object, a SET MODE boolean
*
* maybe call the 'running' flag ENABLE; this would be more applicable a word to the alarm state
*/

// Timer0 ISR, used to maintain the time, executes every 50ms
void timer0_isr(void) interrupt 1 using 1 {

// reset timer
TL0 = CLOCK_TIMER_LOW;
TH0 = CLOCK_TIMER_HIGH;

// is the clock running?
if (CLOCK_RUNNING) {

// then keep track of when to increment the seconds
if (--next_second == 0) {
next_second = CLOCK_TIMER_COUNT;
show_colon = 1;
increment_second();
} else if (next_second == CLOCK_COLON_COUNT) {
show_colon = 0;
}
}

// toggle digit blinking
if (--next_blink == 0) {
next_blink = CLOCK_BLINK_COUNT;
show_blink = !show_blink;
}

// control digit increment
if (--next_increment == 0) {
next_increment = CLOCK_INCREMENT_COUNT;
clock_increment = 1; // flag will be unset by software
}

button_status();
}

// execute 500 DJNZ instructions which should equate to 1 millisecond
void delay1ms(void) {
#pragma asm
MOV R0,#250
MOV R1,#250
L_00001:
DJNZ R0, L_00001
L_00002:
DJNZ R1, L_00002
#pragma endasm
}

void delay(uint16_t ms) {
do {
delay1ms();
} while (--ms > 0);
}

// display refresh
void display_update(void) {
uint8_t digit = 4;
// static uint8_t display_dimmer_counter = 0;

// if (display_dimmer_counter == 0) {
// display_dimmer_counter = display_dimmer;

// disable all digits
P3 |= 0x0F;

for (digit = 0; digit<4; digit++) {

// enable appropriate segments
P1 = dbuf[digit];

// enable appropriate digit (set it to 0; leave others 1)
P3 &= (~(1 << digit));

// delay
delay1ms();

// disable all digits
P3 |= 0x0F;
}
// } else {
// display_dimmer_counter--;
// delay1ms();
// }
}

// set the display buffer first and second digits to the current hour
void set_hour_dbuf(uint8_t display_hour) {
uint8_t hour;

if (TWELVE_TIME) {
hour = display_hour % 12;
if (hour==0) {
hour = 12;
}
} else {
hour = display_hour;
}

dbuf[0] = ledtable[(hour/10)];
dbuf[1] = ledtable[(hour%10)];
}

void init(void) {

// Display initialization
P1 = 0x00; // disable all segments
P3 |= 0x04; // disable all digits

// Timer0 initialization
TMOD = 0x01; // Set Timer0 to mode 1, 16-bit
TH0 = CLOCK_TIMER_HIGH;
TL0 = CLOCK_TIMER_LOW; // Set counter to 15541, overlfow at 65536, a difference of 49995; about 50 milliseconds per trigger
PT0 = 1; // Giver Timer0 high priority
ET0 = 1; // Enable Timer0 interrupt
TR0 = 1; // Enable Timer0
EA = 1; // Enable global interrupts

// Other
P3_7 = 1; // disable buzzer
}

void main(void) {

// initialization routine
init();

// main program loop
while(1) {

// alarm mode
if (ALARM_ENABLE && CLOCK_RUNNING && alarm_hour == clock_hour && alarm_minute == clock_minute) {
if (clock_second == 0 && clock_state != ALARMING) {
clock_state = ALARMING;
}
if (clock_state == ALARMING) {
if (show_colon == 1) {
P3_7 = !P3_7; // P3_7 = show_colon; (this toggling creates an interesting effect)
} else {
P3_7 = 1; // if doing the toggling effect, need to make sure buzzer is off during blink
}
}
} else if (clock_state == ALARMING) { // turn off the alarm after 1 minute
clock_state = NORMAL;
P3_7 = 1; // turn off the alarm
}

// handle button events based on current clock state
switch (clock_state) {

case ALARMING:
if (B1_RELEASED || B2_RELEASED) {
clock_state = NORMAL;
P3_7 = 1; // turn off alarm
B1_RELEASED = 0;
B2_RELEASED = 0;
}
break;

case EDIT_ALARM_MIN:
if (B1_PRESSED) {
clock_state = ENABLE_ALARM;
B1_PRESSED = 0;
} else if (B2_PRESSED) {
increment_alarm_minute();
B2_PRESSED = 0;
} else if (B2_PRESSED_LONG && clock_increment == 1) {
increment_alarm_minute();
clock_increment = 0;
}
break;

case EDIT_ALARM_HOUR:
if (B1_PRESSED) {
clock_state = EDIT_ALARM_MIN;
B1_PRESSED = 0;
} else if (B2_PRESSED) {
increment_alarm_hour();
B2_PRESSED = 0;
} else if (B2_PRESSED_LONG && clock_increment == 1) {
increment_alarm_hour();
clock_increment = 0;
}
break;

case ENABLE_ALARM:
if (B1_PRESSED) {
clock_state = NORMAL;
B1_PRESSED = 0;
} else if (B2_PRESSED) {
ALARM_ENABLE = !ALARM_ENABLE;
B2_PRESSED = 0;
}
break;

case SHOW_ALARM:
if (B1_PRESSED_LONG) {
clock_state = EDIT_ALARM_HOUR;
B1_PRESSED = 0;
B1_PRESSED_LONG = 0;
} else if (B1_RELEASED) {
clock_state = ENABLE_ALARM;
B1_RELEASED = 0;
}
break;

case TIMER:
if (B2_RELEASED) {
clock_state = NORMAL;
B2_RELEASED = 0;
} else if (B1_PRESSED_LONG) {
timer_reset();
// really need to create some sort of change/state or button clear routine
// otherwise possible to enter TIMER state with B1_PRESSED_LONG set if you push both buttons at the same time.
} else if (B1_RELEASED_LONG) {
// a LONG press is a reset, do not toggle the timmer on a LONG press
B1_RELEASED = 0;
B1_RELEASED_LONG = 0;
} else if (B1_RELEASED) {
TIMER_RUNNING = !TIMER_RUNNING; // toggle timer
B1_RELEASED = 0;
}
break;

case SET_24H:
if (B2_RELEASED) {
clock_state = TIMER;
B2_RELEASED = 0;
} else if (B1_RELEASED) {
TWELVE_TIME = !TWELVE_TIME;
B1_RELEASED = 0;
}
break;

case EDIT_MIN:
if (B1_PRESSED) { // exit edit mode
clock_state = NORMAL;
B1_PRESSED = 0;
CLOCK_RUNNING = 1;
} else if (B2_PRESSED) { // increment minute
increment_minute();
clock_second = 0; // reset seconds to 0 when time is changed
B2_PRESSED = 0;
} else if (B2_PRESSED_LONG && clock_increment == 1) {
increment_minute(); // hold down the button to rapidly increase minute
clock_increment = 0;
}
break;

case EDIT_HOUR:
CLOCK_RUNNING = 0;
if (B1_PRESSED) { // switch to edit minute mode
clock_state = EDIT_MIN;
B1_PRESSED = 0;
} else if (B2_PRESSED) { // increment hour
increment_hour();
clock_second = 0; // reset seconds to 0 when time is changed
B2_PRESSED = 0;
} else if (B2_PRESSED_LONG && clock_increment == 1) {
increment_hour(); // hold down the button to rapidly increase hour
clock_increment = 0;
}
break;

case MIN_SEC:
if (B2_RELEASED) {
clock_state = SET_24H;
B2_RELEASED = 0;
}
break;

case NORMAL:
default:
if (B2_RELEASED) {
clock_state = MIN_SEC;
B2_RELEASED = 0;
} else if (B1_PRESSED_LONG) {
clock_state = EDIT_HOUR;
B1_PRESSED = 0;
B1_PRESSED_LONG = 0;
} else if (B1_RELEASED) {
clock_state = SHOW_ALARM;
B1_RELEASED = 0;
}
break;
}

// generate display based on current clock state
// button events and display are separated as state may change during button events
switch (clock_state) {
case ALARMING:
if (show_colon == 1) {
set_hour_dbuf(clock_hour);
dbuf[2] = ledtable[(clock_minute/10)];
dbuf[3] = ledtable[(clock_minute%10)];
dbuf[1] |= 1;
} else {
dbuf[0] = ledtable[LED_BLANK];
dbuf[1] = ledtable[LED_BLANK];
dbuf[2] = ledtable[LED_BLANK];
dbuf[3] = ledtable[LED_BLANK];
}
break;

case ENABLE_ALARM:
dbuf[0] = ledtable[LED_A];
dbuf[1] = ledtable[LED_L];
dbuf[2] = ledtable[LED_BLANK];
if (ALARM_ENABLE) {
dbuf[3] = ledtable[LED_y];
} else {
dbuf[3] = ledtable[LED_n];
}
break;

case EDIT_ALARM_MIN:

set_hour_dbuf(alarm_hour);
if (show_blink == 1) {
dbuf[2] = ledtable[(alarm_minute/10)];
dbuf[3] = ledtable[(alarm_minute%10)];
} else {
dbuf[2] = ledtable[LED_BLANK];
dbuf[3] = ledtable[LED_BLANK];
}
if (!TWELVE_TIME || alarm_hour > 11) {
dbuf[1] |= 1;
}
break;

case EDIT_ALARM_HOUR:

if (show_blink == 1) {
set_hour_dbuf(alarm_hour);
} else {
dbuf[0] = ledtable[LED_BLANK];
dbuf[1] = ledtable[LED_BLANK];
}
dbuf[2] = ledtable[(alarm_minute/10)];
dbuf[3] = ledtable[(alarm_minute%10)];
if (!TWELVE_TIME || alarm_hour > 11) {
dbuf[1] |= 1;
}
break;

case SHOW_ALARM :

if (show_colon == 1) {
set_hour_dbuf(alarm_hour);
dbuf[2] = ledtable[(alarm_minute/10)];
dbuf[3] = ledtable[(alarm_minute%10)];
dbuf[1] |= 1;
} else {
dbuf[0] = ledtable[LED_BLANK];
dbuf[1] = ledtable[LED_BLANK];
dbuf[2] = ledtable[LED_BLANK];
dbuf[3] = ledtable[LED_BLANK];
}
break;

case TIMER:
dbuf[0] = ledtable[(timer_minute/10)];
dbuf[1] = ledtable[(timer_minute%10)];
dbuf[2] = ledtable[(timer_second/10)];
dbuf[3] = ledtable[(timer_second%10)];
if (!TIMER_RUNNING || show_colon) {
dbuf[1] |= 1;
}
break;

case SET_24H:

if (TWELVE_TIME) {
dbuf[0] = ledtable[1];
dbuf[1] = ledtable[2];
} else {
dbuf[0] = ledtable[2];
dbuf[1] = ledtable[4];
}
dbuf[2] = ledtable[LED_h];
dbuf[3] = ledtable[LED_BLANK];
break;

case EDIT_MIN:

set_hour_dbuf(clock_hour);
if (show_blink == 1) {
dbuf[2] = ledtable[(clock_minute/10)];
dbuf[3] = ledtable[(clock_minute%10)];
} else {
dbuf[2] = ledtable[LED_BLANK];
dbuf[3] = ledtable[LED_BLANK];
}

// colon does not blink when setting time
// in 12 hour format, colon is only on when hour represents PM
if (!TWELVE_TIME || clock_hour > 11) {
dbuf[1] |= 1;
}

break;

case EDIT_HOUR:

if (show_blink == 1) {
set_hour_dbuf(clock_hour);
} else {
dbuf[0] = ledtable[LED_BLANK];
dbuf[1] = ledtable[LED_BLANK];
}
dbuf[2] = ledtable[(clock_minute/10)];
dbuf[3] = ledtable[(clock_minute%10)];

// colon does not blink when setting time
// in 12 hour format, colon is only on when hour represents PM
if (!TWELVE_TIME || clock_hour > 11) {
dbuf[1] |= 1;
}

break;

case MIN_SEC:

// update display buffer to show current time
dbuf[0] = ledtable[(clock_minute/10)];
dbuf[1] = ledtable[(clock_minute%10)];
dbuf[2] = ledtable[(clock_second/10)];
dbuf[3] = ledtable[(clock_second%10)];

// blinking colon
if (show_colon == 1) {
dbuf[1] |= 1;
}
break;

case NORMAL:
default:

// update display buffer to show current time
set_hour_dbuf(clock_hour);
dbuf[2] = ledtable[(clock_minute/10)];
dbuf[3] = ledtable[(clock_minute%10)];

// blinking colon
if (show_colon == 1) {
dbuf[1] |= 1;
}
break;
}

// update the display
display_update();
}
}

ID:16255 · 發(fā)表于 2021-1-19 09:54

連時(shí)鐘芯片都不用，估計(jì)走時(shí)不太準(zhǔn)確。

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發(fā)個(gè)AT89C2051制作的時(shí)鐘程序+仿真，功能還是很強(qiáng)大的，大家玩得開(kāi)心就好！

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