335 lines
6.5 KiB
C
335 lines
6.5 KiB
C
#include <stdio.h> /* scanf */
|
|
#include <stdint.h> /* uint8_t */
|
|
#include <stdbool.h> /* true */
|
|
#include <ctype.h> /* toupper */
|
|
#include <conio.h> /* clrscr, kbhit */
|
|
|
|
#include "12hourclk.h"
|
|
extern void clkfreq();
|
|
extern uint8_t ticks[4];
|
|
|
|
#define CLOCK_FREQUENCY 1023000L
|
|
#define CYCLES_PER_NOOP 2
|
|
#define NOOPS_PER_SEC 511500
|
|
#define CTRL_C '\x03'
|
|
#define ESC '\x1B'
|
|
|
|
void read_inputs(void);
|
|
void elapse_one_second(void);
|
|
void run_clock(void);
|
|
|
|
static twleve_hour_clock_t curr_time;
|
|
static twleve_hour_clock_t alarm_time;
|
|
|
|
void main(void)
|
|
{
|
|
clkfreq();
|
|
printf("%c%c.%c%c%c%c%c%c MHz\n",
|
|
ticks[0] & 0x70,
|
|
ticks[0] & 0x07,
|
|
ticks[1] & 0x70,
|
|
ticks[1] & 0x07,
|
|
ticks[2] & 0x70,
|
|
ticks[2] & 0x07,
|
|
ticks[3] & 0x70,
|
|
ticks[3] & 0x07);
|
|
|
|
read_inputs();
|
|
|
|
clrscr();
|
|
printf("\nAlarm Time: ");
|
|
print_time(&alarm_time);
|
|
printf("\nCurrent Time: ");
|
|
|
|
run_clock();
|
|
}
|
|
|
|
void read_inputs()
|
|
{
|
|
puts("Current Time");
|
|
read_interactively(&curr_time);
|
|
puts("Alarm Time");
|
|
read_interactively(&alarm_time);
|
|
}
|
|
|
|
void run_clock()
|
|
{
|
|
char c;
|
|
|
|
print_time(&curr_time);
|
|
while (true) {
|
|
elapse_one_second();
|
|
add_one_second(&curr_time);
|
|
reprint_time(&curr_time);
|
|
if (kbhit()) {
|
|
c = cgetc();
|
|
if (c == ESC || toupper(c) == 'Q' || c == CTRL_C) {
|
|
puts("");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void elapse_one_second()
|
|
{
|
|
int i;
|
|
int max_loops;
|
|
|
|
max_loops = NOOPS_PER_SEC / 250;
|
|
|
|
for (i = 0; i < max_loops; ++i) {
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
asm("nop");
|
|
}
|
|
}
|
|
|