chương trình điều khiển đèn giao thông

unsigned int Delay; unsigned int Period; char RunMe; }sTask; sTask SCH_Tasks[MAX_TASKS]; char SCH_Delete_Taskconst unsigned char Index; void SCH_Initvoid; void interrupt SCH_Updatevoid;

Đèn Giao Thông

/*

* File: newmain.c

* Author:

*

* Created on April 13, 2015,

*/

//den giao thong tai nga tu:

//dung pic16f877a thach anh 4MH

//led 7 doan anot

//thoi gian den do 15s, den xanh 12s, den vang 3s

#include <htc.h>

CONFIG(WDTDIS&PWRTEN&UNPROTECT&BORDIS&LVPDIS);

#define _XTAL_FREQ 4000000

int chuc_dec,donvi_dec,chuc_hex,donvi_hex,dem,count=16000; int chuc_dec1,donvi_dec1,chuc_hex1,donvi_hex1,dem1,count1=16000;

#define MAX_TASKS 7

#define DO1 RC0

#define XANH1 RC1

#define VANG1 RC2

#define DO2 RC3

#define XANH2 RC4

#define VANG2 RC5

typedef struct _sTask

{

void (*pTask)(void);

unsigned int Delay;

unsigned int Period;

char RunMe;

}sTask;

sTask SCH_Tasks[MAX_TASKS];

char SCH_Delete_Task(const unsigned char Index); void SCH_Init(void);

void interrupt SCH_Update(void);

char SCH_Add_Task(void (*pFn)(void),

unsigned int delay,

unsigned int period);

void SCH_Dispatch_Tasks(void);

void SCH_Start(void);

//

void init_port();

void tach_so(int dem,int dem1);

void dec_to_hex();

void quetled_7doan();

//

void Task_T1(void);

void Task_T2(void);

void Task_T3(void);

void Task_T4(void);

void Task_T5(void);

void main(void)

{

init_port();

TRISC = 0;

SCH_Init();

SCH_Add_Task(Task_T1,0,30000);

SCH_Add_Task(Task_T2,12000,30000);

SCH_Add_Task(Task_T3,15000,30000);

SCH_Add_Task(Task_T4,27000,30000);

SCH_Add_Task(Task_T5,0,10);

SCH_Start();

while(1)

{

SCH_Dispatch_Tasks();

}

}

char SCH_Delete_Task(const unsigned char Index) {

if(SCH_Tasks[Index].pTask==0) return -1; SCH_Tasks[Index].pTask = 0;

SCH_Tasks[Index].Delay = 0;

SCH_Tasks[Index].Period = 0;

SCH_Tasks[Index].RunMe = 0;

return 0;

}

void SCH_Init(void)

{

unsigned char Index;

for(Index=0;Index<MAX_TASKS;Index++)

{

SCH_Delete_Task(Index);

}

OPTION = 0x02; //Prescaler 1:8

TMR0 = 256-125;

T0IF = 0;

}

void interrupt SCH_Update(void)

{

unsigned char Index;

TMR0 = 256-125;

T0IF = 0;

for(Index=0;Index<MAX_TASKS;Index++)

{

if(SCH_Tasks[Index].pTask!=0)

{

if(SCH_Tasks[Index].Delay==0)

{

SCH_Tasks[Index].RunMe = 1;

if(SCH_Tasks[Index].Period>0)

{

SCH_Tasks[Index].Delay = SCH_Tasks[Index].Period; }

else

{

SCH_Tasks[Index].Delay ;

}

}

}

count ;

count1 ;

}

char SCH_Add_Task(void (*pFn)(void),

unsigned int delay,

unsigned int period)

{

int Index = 0;

while((SCH_Tasks[Index].pTask!=0)&&(Index<MAX_TASKS)) {

Index++;

}

if(Index==MAX_TASKS)

{

return -1;

}

SCH_Tasks[Index].pTask = pFn;

SCH_Tasks[Index].Delay = delay;

SCH_Tasks[Index].Period = period;

SCH_Tasks[Index].RunMe = 0;

return Index;

}

void SCH_Dispatch_Tasks(void)

{

unsigned char Index;

for(Index=0;Index<MAX_TASKS;Index++)

{

if(SCH_Tasks[Index].pTask!=0 && SCH_Tasks[Index].RunMe>0) {

SCH_Tasks[Index].pTask();

SCH_Tasks[Index].RunMe = 0;

}

if(SCH_Tasks[Index].Period == 0)

{

SCH_Delete_Task(Index);

}

}

}

void SCH_Start(void)

{

T0IE = 1;

GIE = 1;

}

void Task_T1(void)

{

count=16000;

count1=13000;

DO2=0;

XANH2=1; VANG1=0; DO1 = 1; }

void Task_T2(void) {

count1=4000; int i;

XANH2=0; VANG2=1; DO1 = 1;

}

void Task_T3(void) { count1=16000; count=13000; int i;

DO1=0;

XANH1=1; VANG2=0; DO2=1;

}

void Task_T4(void) {

count=4000;

int i;

VANG1=1;

XANH1=0;

DO2 = 1;

}

void Task_T5(void)

{

dem=count/1000;;

dem1=count1/1000;

tach_so(dem,dem1);

dec_to_hex();

quetled_7doan();

}

void init_port()

{

TRISB=0X00;

PORTB=0X00;

TRISD=0X00;

PORTD=0X00;

}

void tach_so(int dem,int dem1) {

chuc_dec=dem/10;

donvi_dec=dem%10;

chuc_dec1=dem1/10;

donvi_dec1=dem1%10;

void dec_to_hex()

{

int i;

const unsigned char a[10]= {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; i=chuc_dec;

chuc_hex=a[i];

i=donvi_dec;

donvi_hex=a[i];

i=chuc_dec1;

chuc_hex1=a[i];

i=donvi_dec1;

donvi_hex1=a[i];

}

void quetled_7doan()

{

unsigned char a[4];

int mabandau,i;

a[3]=chuc_hex;

a[2]=donvi_hex;

a[1]=chuc_hex1;

a[0]=donvi_hex1;

mabandau = 0b00000001;

for (i=0;i<=3;i++)

{

PORTB = mabandau;

PORTD = a[i];

delay_ms(1);

PORTB = 0X00; //SAU KHI DELAY DE MAT NHIN THAY ROI XOA DE TAT,

//NEU KO XOA THI TIEP TUC CHUONG TRINH SE QUET QUA 7SEG KHAC NHUNG // CHUA DUA MANG VAO NEN LED 7SG THU 2 SE CO KI TU GIONG LED 7SEG THU1 mabandau = mabandau<<1;

}

}