?? mstimer.c
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//********************************************************************
// Author : Bing Wang
// Date : Mar. 2007
// File : msTIMER.c
// Hardware : 89S51/89S52
//********************************************************************
#include <AT89X52.h> // SFR definition file.
#include <stdio.h>
#include <absacc.h> //
#include <ctype.h> //
#include <stdlib.h> //
#include <math.h>
// Interface address definition
// DP8573AN RTC
xdata char DP8573SEC _at_ 0x0600;
xdata char DP8573MIN _at_ 0x0700;
xdata char DP8573HOUR _at_ 0x0800;
xdata char DP8573WEEK _at_ 0x0E00;
xdata char DP8573DAY _at_ 0x0900;
xdata char DP8573MONTH _at_ 0x0A00;
xdata char DP8573YEAR _at_ 0x0B00;
xdata char DP8573SECs _at_ 0x1900; // Second Save
xdata char DP8573MINs _at_ 0x1A00; // Minute Save
xdata char DP8573HOURs _at_ 0x1B00; // Hour Save
xdata char DP8573DAYs _at_ 0x1C00; // Day Save
xdata char DP8573MONs _at_ 0x1D00; // Month Save
xdata char DP8573MSR _at_ 0x0000; // Main Status Register
xdata char DP8573PFR _at_ 0x0400; // Periodic Flag Register
xdata char DP8573TSCR _at_ 0x0400; // Time Save Control Register
xdata char DP8573RTMR _at_ 0x0100; // Real Time Mode Register
xdata char DP8573OMR _at_ 0x0200; // Output Mode Register
xdata char DP8573ICR0 _at_ 0x0300; // Interrupt Control Register 0
xdata char DP8573ICR1 _at_ 0x0400; // Interrupt Control Register 1
unsigned char msCNT, Tsecond;
unsigned char SecRTC, MinRTC, HourRTC, WeekRTC, DayRTC, MonthRTC, YearRTC;
unsigned char CmdOld, KeyCmd;
unsigned char second, secondOld, minute, minuteOld, hour, hourOld;
unsigned char day, dayOld, month, monthOld, year, yearOld, timeH, timeL;
void UART_Init(void)
{
SCON = 0x50; // Setup serial port ctrl reg
// Mode 1: 8-bit uart var. baud rate
// REN: enable receiver
PCON &= 0x7F; // Clear SMOD bit in power ctrl reg
// This bit doubles the baud rate
TMOD &= 0xCF; // Clear M1 and M0 for timer 1
TMOD |= 0x20; // Set M1 for 8-bit autoreload timer
// TMOD: Timer 1 Mode 2: 8-bit auto-reload timer
TH1 = 213; // 1200 baud with 20MHz xtal
TR1 = 1; // Start timer 1
TI = 1; // Set TI to indicate ready to xmit
}
void DP8573A_Init(void)
{
DP8573MSR = 0x40; // RS=1
DP8573ICR0 = 0x04; // Interrupt every 1sec
DP8573RTMR = 0x00; // 24 hour mode + stop timer
DP8573MSR = 0x00; // RS=0
DP8573PFR = 0x00; // Clear INT flags + battery backup
DP8573TSCR = 0x80; // Time save enable
DP8573SECs = 0x00; // Clear saved second
DP8573MINs = 0x00; // Clear saved minute
DP8573HOURs = 0x00; // Clear saved hour
DP8573DAYs = 0x00; // Clear saved day
DP8573MONs = 0x00; // Clear saved month
DP8573MSR = 0x44; // RS=1, clear INT flag
DP8573RTMR = 0x08; // Clock start
}
void delay1s(void)
{
unsigned int k;
for (k=0;k<40000;k++);
}
void delay100ms(void)
{
unsigned int k;
for (k=0;k<2000;k++);
}
unsigned char KeyScan(void)
{
unsigned char keypad;
keypad = P1;
keypad &= 0x1D;
switch (keypad)
{
case 0x1C:
keypad = 1;
break;
case 0x19:
keypad = 2;
break;
case 0x15:
keypad = 3;
break;
case 0x0D:
keypad = 4;
break;
default:
keypad = 0;
break;
}
return keypad;
}
void AdjustRTC(void)
{
unsigned char EndCMD, Para, ParaOld, ParaValue;
SecRTC = DP8573SEC;
SecRTC = (SecRTC>>4)*10 + (SecRTC%16);
MinRTC = DP8573MIN;
MinRTC = (MinRTC>>4)*10 + (MinRTC%16);
HourRTC = DP8573HOUR;
HourRTC = (HourRTC>>4)*10 + (HourRTC%16);
DayRTC = DP8573DAY;
DayRTC = (DayRTC>>4)*10 + (DayRTC%16);
MonthRTC = DP8573MONTH;
MonthRTC = (MonthRTC>>4)*10 + (MonthRTC%16);
YearRTC = DP8573YEAR;
YearRTC = (YearRTC>>4)*10 + (YearRTC%16);
EndCMD = 0;
Para = ParaOld = 0;
CmdOld = 0;
while (!EndCMD) {
if (KeyCmd != CmdOld) {
switch (KeyCmd) {
case 1: // Setting
Para += 1;
if (Para >= 7) { Para = 0; EndCMD = 1; }
break;
case 2: // +
switch(Para) {
case 1: // Year
if (YearRTC >= 99) YearRTC = 0;
else YearRTC++;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((YearRTC/10)+48);
putchar((YearRTC%10)+48);
break;
case 2: // Month
if (MonthRTC >= 12) MonthRTC = 1;
else MonthRTC++;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((MonthRTC/10)+48);
putchar((MonthRTC%10)+48);
break;
case 3: // Day
if (DayRTC >= 31) DayRTC = 1;
else DayRTC++;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((DayRTC/10)+48);
putchar((DayRTC%10)+48);
break;
case 4: // Hour
if (HourRTC >= 24) HourRTC = 0;
else HourRTC++;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((HourRTC/10)+48);
putchar((HourRTC%10)+48);
break;
case 5: // Minute
if (MinRTC >= 59) MinRTC = 0;
else MinRTC++;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((MinRTC/10)+48);
putchar((MinRTC%10)+48);
break;
case 6: // Second
if (SecRTC >= 59) SecRTC = 0;
else SecRTC++;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((SecRTC/10)+48);
putchar((SecRTC%10)+48);
break;
default:
break;
}
break;
case 3: // -
switch(Para) {
case 1: // Year
if (YearRTC == 0) YearRTC = 99;
else YearRTC--;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((YearRTC/10)+48);
putchar((YearRTC%10)+48);
break;
case 2: // Month
if (MonthRTC == 1) MonthRTC = 12;
else MonthRTC--;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((MonthRTC/10)+48);
putchar((MonthRTC%10)+48);
break;
case 3: // Day
if (DayRTC == 1) DayRTC = 31;
else DayRTC--;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((DayRTC/10)+48);
putchar((DayRTC%10)+48);
break;
case 4: // Hour
if (HourRTC == 0) HourRTC = 24;
else HourRTC--;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((HourRTC/10)+48);
putchar((HourRTC%10)+48);
break;
case 5: // Minute
if (MinRTC == 0) MinRTC = 59;
else MinRTC--;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((MinRTC/10)+48);
putchar((MinRTC%10)+48);
break;
case 6: // Second
if (SecRTC == 0) SecRTC = 59;
else SecRTC--;
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((SecRTC/10)+48);
putchar((SecRTC%10)+48);
break;
default:
break;
}
break;
case 4: // Enter
ParaValue = ((SecRTC/10)*16) + (SecRTC%10);
SecRTC = ParaValue;
ParaValue = ((MinRTC/10)*16) + (MinRTC%10);
MinRTC = ParaValue;
ParaValue = ((HourRTC/10)*16) + (HourRTC%10);
HourRTC = ParaValue;
ParaValue = ((DayRTC/10)*16) + (DayRTC%10);
DayRTC = ParaValue;
ParaValue = ((MonthRTC/10)*16) + (MonthRTC%10);
MonthRTC = ParaValue;
ParaValue = ((YearRTC/10)*16) + (YearRTC%10);
YearRTC = ParaValue;
DP8573MSR = 0x40; // RS=1
DP8573RTMR = 0x00; // 24 hour mode + stop timer
DP8573SEC = SecRTC;
DP8573MIN = MinRTC;
DP8573HOUR = HourRTC;
DP8573DAY = DayRTC;
DP8573MONTH = MonthRTC;
DP8573YEAR = YearRTC;
DP8573MSR = 0x40; // RS=1
DP8573RTMR = 0x08; // 24 hour mode + run timer
EndCMD = 1;
Para = 0;
break;
default:
break;
}
// Display setting
if (ParaOld != Para) {
putchar(13);
ParaOld = Para;
switch(Para) {
case 1: // Year
printf("Year:");
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((YearRTC/10)+48);
putchar((YearRTC%10)+48);
break;
case 2: // Month
printf("Month:");
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((MonthRTC/10)+48);
putchar((MonthRTC%10)+48);
break;
case 3: // Day
printf("Day:");
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((DayRTC/10)+48);
putchar((DayRTC%10)+48);
break;
case 4: // Hour
printf("Hour:");
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((HourRTC/10)+48);
putchar((HourRTC%10)+48);
break;
case 5: // Minute
printf("Minute:");
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((MinRTC/10)+48);
putchar((MinRTC%10)+48);
break;
case 6: // Second
printf("Second:");
putchar(16); // Set cursor to the last 2 chars
putchar(14);
putchar((SecRTC/10)+48);
putchar((SecRTC%10)+48);
break;
default:
break;
} // End SWITCH
} // End if(ParaOld != Para)
} // End if(KeyCmd != CmdOld)
CmdOld = KeyCmd;
KeyCmd = KeyScan();
} // End while(!EndCMD)
// CmdOld = KeyCmd;
// putchar(7); // Cursor back 1 char
// putchar(23); // Cursor blinking
}
void DisplayRTC(void)
{
putchar(13);
hour = DP8573HOUR; // Hour
timeH = hour >> 4;
putchar(timeH+48);
timeL = hour % 16;
putchar(timeL+48);
putchar(':');
minute = DP8573MIN; // Minute
timeH = minute >> 4;
putchar(timeH+48);
timeL = minute % 16;
putchar(timeL+48);
putchar(':');
second = DP8573SEC; // Second
timeH = second >> 4;
putchar(timeH+48);
timeL = second % 16;
putchar(timeL+48);
putchar(' ');
putchar(' ');
year = DP8573YEAR; // Year
timeH = year >> 4;
putchar(timeH+48);
putchar(25); // .
putchar(3);
timeL = year % 16;
putchar(timeL+48);
month = DP8573MONTH; // Month
timeH = month >> 4;
putchar(timeH+48);
putchar(25); // .
putchar(3);
timeL = month % 16;
putchar(timeL+48);
day = DP8573DAY; // Day
timeH = day >> 4;
putchar(timeH+48);
timeL = day % 16;
putchar(timeL+48);
secondOld = second;
minuteOld = minute;
hourOld = hour;
yearOld = year;
monthOld = month;
dayOld = day;
}
void msTimer(void) interrupt 0 using 0 {
if (++msCNT == 1) { /* 1s */
Tsecond++; /* second counter */
msCNT = 0; /* clear int counter */
}
}
main()
{
UART_Init();
delay1s();
delay100ms();
putchar(15); // Set VFD brightness
delay100ms();
putchar(0x20); // Lowest brightness to reduce power consumption
// user-defined char #1: \05 \01; show with \01
putchar(5); putchar(1);
// SHI: 02 39 17 EE 45 A2 B1 C8 04 06 00
putchar(0x02);
putchar(0x39);
putchar(0x17);
putchar(0xEE);
putchar(0x45);
putchar(0xA2);
putchar(0xB1);
putchar(0xC8);
putchar(0x04);
putchar(0x06);
putchar(0x00);
// user-defined char #2: \05 \02; show with \02
putchar(5); putchar(2);
// JIAN: 40 17 90 4B A5 52 E9 54 BA 43 00
putchar(0x40);
putchar(0x17);
putchar(0x90);
putchar(0x4B);
putchar(0xA5);
putchar(0x52);
putchar(0xE9);
putchar(0x54);
putchar(0xBA);
putchar(0x43);
putchar(0x00);
// user-defined char #3: \05 \03; show with \03
putchar(5); putchar(3);
// RI: 00 1F 08 84 43 E1 10 88 7C 00 00
putchar(0x00);
putchar(0x1F);
putchar(0x08);
putchar(0x84);
putchar(0x43);
putchar(0xE1);
putchar(0x10);
putchar(0x88);
putchar(0x7C);
putchar(0x00);
putchar(0x00);
// user-defined char #4: \05 \04; show with \04
putchar(5); putchar(4);
// QI: 50 7F 95 4E E7 52 BB F4 AA 55 01 =or= 50 7D D4 AE 77 2A 9F EA A5 95 80
putchar(0x50);
putchar(0x7F);
putchar(0x95);
putchar(0x4E);
putchar(0xE7);
putchar(0x52);
putchar(0xBB);
putchar(0xF4);
putchar(0xAA);
putchar(0x55);
putchar(0x01);
putchar(22); // Hide cursor
putchar(13); // Reset display
putchar(1);
putchar(2);
putchar(':');
putchar(16); // Set cursor position
putchar(11);
putchar(3);
putchar(4);
putchar('-');
delay1s();
DP8573A_Init();
P1 = 0x7F; // P1: 1DO + 7DI
delay1s();
// Used to set RTC
/* DP8573MSR = 0x40;
DP8573RTMR = 0x00;
DP8573MIN = 54;
DP8573HOUR = 24;
DP8573DAY = 24;
DP8573MONTH = 3;
DP8573YEAR = 7;
DP8573MSR = 0x40;
DP8573RTMR = 0x08;
*/
DisplayRTC();
delay1s();
delay1s();
CmdOld = KeyScan();
while(1)
{
hour = DP8573HOUR; // Hour
if (hour != hourOld) {
putchar(16); // Set cursor position
putchar(0);
timeH = hour >> 4;
putchar(timeH+48);
timeL = hour % 16;
putchar(timeL+48);
putchar(':');
hourOld = hour;
}
minute = DP8573MIN; // Minute
if (minute != minuteOld) {
putchar(16); // Set cursor position
putchar(3);
timeH = minute >> 4;
putchar(timeH+48);
timeL = minute % 16;
putchar(timeL+48);
putchar(':');
minuteOld = minute;
}
second = DP8573SEC; // Second
if (second != secondOld) {
putchar(16); // Set cursor position
putchar(6);
timeH = second >> 4;
putchar(timeH+48);
timeL = second % 16;
putchar(timeL+48);
secondOld = second;
}
year = DP8573YEAR;
putchar(16); // Set cursor position
putchar(10);
timeH = year >> 4;
putchar(timeH+48);
timeL = year % 16;
putchar(timeL+48);
yearOld = year;
}
month = DP8573MONTH;
if (month != monthOld) {
putchar(16); // Set cursor position
putchar(12);
timeH = month >> 4;
putchar(timeH+48);
timeL = month % 16;
putchar(timeL+48);
yearOld = year;
}
day = DP8573DAY;
if (day != dayOld) {
putchar(16); // Set cursor position
putchar(14);
timeH = day >> 4;
putchar(timeH+48);
timeL = day % 16;
putchar(timeL+48);
dayOld = day;
}
KeyCmd = KeyScan();
if (KeyCmd == 1) { // RTC adjustment
AdjustRTC();
DisplayRTC();
}
}
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