vfd_51.c

一个用C51驱动PT6324+VFD的源程序

/*
function : P1.0 output frequency time 100ms ~ 1000ms 
author : 
start date : 
*/

//#define DEBUG
//#pragma ot(6,speed)

#pragma small

#include <reg51.h>
#include <intrins.h>

#ifdef 	DEBUG
#include <stdio.h>
#endif

#define MODEKEY     0x00
#define VFD_A       0x00
#define VFD_B       0x01

#define COMMAND1    0x00
#define DIG4        0x00
#define DIG5        0x01
#define DIG6        0x02
#define DIG7        0x03
#define DIG8        0x04
#define DIG9        0x05
#define DIG10       0x06
#define DIG11       0x07
#define DIG12       0x08

#define COMMAND2    0x40
#define TESTMODE    0x08
#define FIX_ADDR    0x04
#define INC_ADDR    0x00
#define W_DISP      0x00
#define W_LED       0x01
#define R_KEY       0x02

#define COMMAND3    0xc0
#define COMMAND4    0x80
#define DISPLAY_ON  0x08


#define NO_PAD      0x00
#define DUTY14_16   0x01
#define DUTY13_16   0x02
#define DUTY12_16   0x04
#define DUTY11_16   0x08
#define DUTY10_16   0x10

sbit vfd_a_dout = P2 ^ 0;
sbit vfd_a_stb  = P2 ^ 1;
sbit vfd_a_din  = P2 ^ 2;
sbit vfd_a_clk  = P2 ^ 3;
sbit test_p     = P2 ^ 4;   //test
sbit vfd_b_stb  = P2 ^ 5;
sbit vfd_b_din  = P2 ^ 6;
sbit vfd_b_clk  = P2 ^ 7;


static unsigned char bdata flag0;
sbit f_key_push	 = flag0 ^ 0;		//
sbit f_new_key	 = flag0 ^ 1;		//=1/0 执行键功能/不执行键功能
sbit f_old_key	 = flag0 ^ 2;		//=0/1
sbit f_run_mode	 = flag0 ^ 5;
sbit f_timer0_int= flag0 ^ 6;
sbit f_timer1_int= flag0 ^ 7;

static unsigned char bdata flag1;
sbit f_dispshow     = flag1 ^ 0;
sbit f_dispupdata   = flag1 ^ 1;
sbit f_mode3p1      = flag1 ^ 2;
sbit f_t500ms       = flag1 ^ 3;
sbit f_t1s          = flag1 ^ 4;
sbit f_dispminute   = flag1 ^ 5;
sbit f_disphour     = flag1 ^ 6;
sbit f_padupdata    = flag1 ^ 7;

unsigned char data hourbuf,minutedbuf,secbuf;
//unsigned char data dispbuf[48];

unsigned char data key_code;
unsigned char data temp_key_code;
unsigned char data step_kind;
unsigned char data mode;
unsigned char data mode3coun;
unsigned char data t500ms_cont;
unsigned char data duty_buf;
//unsigned char data bcd[3];
/*
unsigned char code digit[] = 
{0x40, 0x79, 0x24, 0x30, 0x19, 0x12, 0x02, 0x78, 0x00, 0x10};
*/
void Timer0(void);
void Timer_int_Ini(void);
void delay_short(unsigned char delays_cnt);
void delay_long(unsigned int delayl_cnt);
void serial_out(unsigned char vfd_select, unsigned char s_data);
void display_init(void);
void display(void);
//void hex2bcd(unsigned char hexdata);
void key_scan(void);
void read_switch(void);
void key_process(void);

void main(void)
{
    Timer_int_Ini();
    EA	= 1;

//	P2 = 0;
    vfd_a_stb = 1;
    vfd_a_clk = 0;
    vfd_a_din = 0;
    vfd_a_dout = 0;
    vfd_b_stb = 1;
    vfd_b_clk = 0;
    vfd_b_din = 0;
//    vfd_b_dout = 0;
  
    delay_long(50000);
    delay_long(50000);
    
    mode = 0;
    duty_buf = 0x07;
    f_dispupdata = 1;
    f_dispshow = 1;
    display_init();

//    while (1)
//    {}
    
    while (1)
    {
        if (f_timer1_int == 1)
        {
            f_timer1_int = 0;
            if (t500ms_cont < 16)
            {
                t500ms_cont++;
            }
            else
            {
                t500ms_cont = 0;
                f_t500ms = 1;
            }
            read_switch();
            key_scan();
            key_process();
        }
    	
        if(f_t500ms == 1)
        {
            f_t500ms = 0;
            switch (mode)
            {
                case 0:
                case 1:
                    break;
                
                case 3:
                    if (mode3coun <20)
                    {
                        mode3coun++;
                    }
                    else
                    {
                        mode3coun = 0;
                        f_mode3p1 = ~f_mode3p1;
                        f_dispupdata = 1;
                    }
                    break;

                case 2:
                    f_dispupdata = 1;
                    break;
                    
                default:
                    break;
            }
            
            if (f_t1s == 1)
            {
                f_t1s = 0;
                f_dispshow = 0;
                test_p =0;
            }
            else
            {
                f_t1s = 1;
                f_dispshow = 1;
                test_p = 1;
                
                if (secbuf < 59)
                {
                    secbuf++;
                }
                else
                {
                    secbuf = 0;
                    f_dispminute = 1;
                    if (minutedbuf < 59)
                    {
                        minutedbuf++;
                    }
                    else
                    {
                        minutedbuf = 0;
                        f_disphour = 1;
                        if(hourbuf < 23)
                        {
                            hourbuf++;
                        }
                        else
                        {
                            hourbuf = 0;
                        }
                    }
                }
            }
            display();
        }
    }
}

//
void Timer0(void) interrupt 1 using 0
{
	TH0 = 0x00;//0xdc;
	TL0 = 0x00;//0x5c;
	
	f_timer0_int = 1;
}

//13.565M, 31.25ms
void Timer1(void) interrupt 3 using 0
{
	TH1 = 0x76;//0xdc;
	TL1 = 0x02;//0x5c;
	
	f_timer1_int = 1;
}

void Timer_int_Ini(void)
{
	TH0 = 0x00;//0xdc;		//11.0592Mhz
	TL0 = 0x00;//0x5c;
	TH1 = 0X76;
	TL1 = 0X02;
	TMOD = 0x10;
//	ET0	 = 1;
	ET1  = 1;
//	TR0	 = 1;
	TR1  = 1;
}

void key_scan(void)
{
	unsigned char temp;
	temp = (P0 & 0x01);//有键按下时 !=0x0f

	if (temp != 0x01)//是否有键按下
	{
		if ((temp == temp_key_code) && (f_old_key == 0))
		{
			key_code = temp;
			f_new_key = 1;
		}
		else
		{
			temp_key_code = temp;
		}
	}
	else
	{
		temp_key_code = 0;
		f_new_key = 0;
		f_old_key = 0;
	}
}

void key_process(void)
{
	if (f_new_key)
	{
		switch (key_code)
		{
        case MODEKEY:
            if(mode < 3)
            {
                mode++;
            }
            else
            {
                mode = 0;
            }
            f_dispshow= 1;
            f_dispupdata = 1;
            
            f_new_key = 0;
            f_old_key = 1;
            break;
				
        default:
            break;
		}
	}
}

void read_switch(void)
{
    step_kind = 0x1f - (P1 & 0x1f);
    switch (step_kind)
    {
        case NO_PAD:
            
            break;

        case DUTY14_16:
            if(duty_buf != 0x07)
            {
                duty_buf = 0x07;
                f_padupdata =1;
                f_dispupdata = 1;
            }
            break;
        	
        case DUTY13_16:
            if(duty_buf != 0x06)
            {
                duty_buf = 0x06;
                f_padupdata =1;
                f_dispupdata = 1;
            }
            break;
        	
        case DUTY12_16:
            if(duty_buf != 0x05)
            {
                duty_buf = 0x05;
                f_padupdata =1;
                f_dispupdata = 1;
            }
            break;
        	
        case DUTY11_16:
            if(duty_buf != 0x04)
            {
                duty_buf = 0x04;
                f_padupdata =1;
                f_dispupdata = 1;
            }
            break;
        	
        case DUTY10_16:
            if(duty_buf != 0x03)
            {
                duty_buf = 0x03;
                f_padupdata =1;
                f_dispupdata = 1;
            }
            break;
    
        default:
            break;
    }

    if(f_padupdata)
    {
        f_padupdata = 0;
        vfd_a_stb = 0;
        serial_out(VFD_A, COMMAND1 | DIG5);   //command 1, 8dig, 24seg
        vfd_a_stb = 1;
        
        delay_short(2);
        
        vfd_a_stb = 0;
        serial_out(VFD_A, COMMAND4 | DISPLAY_ON | duty_buf);   //command 4, duty
        vfd_a_stb = 1;
//
        vfd_b_stb = 0;
        serial_out(VFD_B, COMMAND1 | DIG5);   //command 1, 8dig, 24seg
        vfd_b_stb = 1;
        
        delay_short(2);