mctools/clkgen.c

#include "mctools.h"

#define FOSC 12000000L	//system frequency
#define BAUD 9600L	//baud-rate


#define DLED P2_6
#define ILED P2_7 
#define T0_1MS	(65536-FOSC/12/10000)


#define DISP_A P3_5
#define DISP_B P3_6


const uint8_t sevensegdef[][7] = {
	// 0
	{
		(0x35 << 1) | 0,
		(0x36 << 1) | 0,
		(0x37 << 1) | 0,
		(0x20 << 1) | 0,
		(0x21 << 1) | 0,
		(0x22 << 1) | 0,
		(0x23 << 1) | 1,
	},
	// 1
	{
		(0x35 << 1) | 1,
		(0x36 << 1) | 0,
		(0x37 << 1) | 0,
		(0x20 << 1) | 1,
		(0x21 << 1) | 1,
		(0x22 << 1) | 1,
		(0x23 << 1) | 1,
	},
	// 2
	{
		(0x35 << 1) | 0,
		(0x36 << 1) | 0,
		(0x37 << 1) | 1,
		(0x20 << 1) | 0,
		(0x21 << 1) | 0,
		(0x22 << 1) | 1,
		(0x23 << 1) | 0,
	},
	// 3
	{
		(0x35 << 1) | 0,
		(0x36 << 1) | 0,
		(0x37 << 1) | 0,
		(0x20 << 1) | 0,
		(0x21 << 1) | 1,
		(0x22 << 1) | 1,
		(0x23 << 1) | 0,
	},
	// 4
	{
		(0x35 << 1) | 1,
		(0x36 << 1) | 0,
		(0x37 << 1) | 0,
		(0x20 << 1) | 1,
		(0x21 << 1) | 1,
		(0x22 << 1) | 0,
		(0x23 << 1) | 0,
	},
	// 5
	{
		(0x35 << 1) | 0,
		(0x36 << 1) | 1,
		(0x37 << 1) | 0,
		(0x20 << 1) | 0,
		(0x21 << 1) | 1,
		(0x22 << 1) | 0,
		(0x23 << 1) | 0,
	
	},
	// 6
	{
		(0x35 << 1) | 0,
		(0x36 << 1) | 1,
		(0x37 << 1) | 0,
		(0x20 << 1) | 0,
		(0x21 << 1) | 0,
		(0x22 << 1) | 0,
		(0x23 << 1) | 0,
	},
	// 7
	{
		(0x35 << 1) | 0,
		(0x36 << 1) | 0,
		(0x37 << 1) | 0,
		(0x20 << 1) | 1,
		(0x21 << 1) | 1,
		(0x22 << 1) | 1,
		(0x23 << 1) | 1,
	},
	//8
	{
		(0x35 << 1) | 0,
		(0x36 << 1) | 0,
		(0x37 << 1) | 0,
		(0x20 << 1) | 0,
		(0x21 << 1) | 0,
		(0x22 << 1) | 0,
		(0x23 << 1) | 0,
	},
	{
		(0x35 << 1) | 0,
		(0x36 << 1) | 0,
		(0x37 << 1) | 0,
		(0x20 << 1) | 0,
		(0x21 << 1) | 1,
		(0x22 << 1) | 0,
		(0x23 << 1) | 0,
	}
				
};

static uint16_t pulse=0;
#define PULSE_LEN 250;

static uint8_t single_step=1;
static uint8_t single_step_count=0;
static uint8_t speed=40;
static uint8_t disp_nr=25;

#define MYSW1 P2_7
#define MYSW2 P1_0
#define MYSW3 P1_1

static void handle_switches()
{
	static uint8_t lastsw1=1;
	static uint8_t lastsw2=1;
	static uint8_t lastsw3=1;

	if (lastsw3 != MYSW3){
		lastsw3=MYSW3;
		if(!lastsw3){
			single_step=1;
			if(pulse==0){
				pulse=PULSE_LEN;
			}
		}
	}

	if (lastsw1 != MYSW1){
		lastsw1=MYSW1;
		if (!lastsw1){
			if (single_step){
				single_step=0;
				return;
			}
		
			disp_nr--;
		}
	}

	if (lastsw2 != MYSW2){
		lastsw2=MYSW2;
		if (!lastsw2) {
			if (single_step){
				single_step=0;
				return;
			}
			disp_nr++;
		}
	}


}

static void update_display()
{
	uint8_t dig;

	static uint8_t pos=0;
	switch (pos){
	case 0:
		P2_5=0;
		P2_4=0;
		dig=disp_nr/10;
		ss_display(sevensegdef,dig);
		P2_5=1;
		P2_4=0;
		break;
	case 1:
		P2_5=0;
		P2_4=0;
		dig=disp_nr%10;
		ss_display(sevensegdef,dig);
		P2_5=0;
		P2_4=1;
		break;
	}
	pos++;
	if (pos>1)
		pos=0;

}

#define COU0 11
#define COU1 1000

static void cou0()
{
	static int count=COU0;
	if (count--)
		return;
	count=COU0;

	update_display();
	handle_switches();
	
}


static void pulser() 
{
	if(pulse>0){
		P2_6 = 1;
		pulse--;
		return;	
	}

	P2_6=0;

}


static void cou1()
{
	static int ctr = 99;

	static int count=COU1;

	

	if (count--)
		return;
	count=COU1;

	if (single_step)
		return;

	

	ctr-=disp_nr;
	if (ctr <=0){
		ctr+=99;
		pulse=PULSE_LEN;
	}
	

//	if (disp_nr>99)
//		disp_nr=0;

}



static void timer0_isr() __interrupt(1) __using (1)
{
	EA=0;
	cou0();
	cou1();
	pulser();
	EA=1;
	return;
}


void timer0_init() {

	stc15_timer0_set_sysclk12();
	stc15_timer0_set_mode_16bitauto();

			
	TL0 = T0_1MS;  		// Initial timer value
    	TH0 = T0_1MS>>8;	// Initial timer value
	TF0 = 0;		// Clear overflow flag
	TR0 = 1;		// Timer0 start run
	ET0 = 1;		// Enable timer0 interrupt


}


void main()
{
	uint8_t p = P3;

/*	stc15_cfg_p3_opendrain(5);
	stc15_cfg_p3_opendrain(6);
	stc15_cfg_p3_opendrain(7);
*/

//	stc15_configure_pin

//	setpin_lo(3,5);
//	setpin_hi(3,5);

	//ss_display(sevensegdef,0);

	stc15_configure_pin(3,5,PORTMODE_PUSH);
	stc15_configure_pin(3,6,PORTMODE_PUSH);
	stc15_configure_pin(3,7,PORTMODE_PUSH);
	stc15_configure_pin(2,0,PORTMODE_PUSH);
	stc15_configure_pin(2,1,PORTMODE_PUSH);
	stc15_configure_pin(2,2,PORTMODE_PUSH);
	stc15_configure_pin(2,3,PORTMODE_PUSH);

	stc15_configure_pin(2,4,PORTMODE_PUSH);
	stc15_configure_pin(2,5,PORTMODE_PUSH);

	stc15_configure_pin(2,6,PORTMODE_PUSH);
	stc15_configure_pin(2,7,PORTMODE_INPUT);
	stc15_configure_pin(1,0,PORTMODE_INPUT);
	stc15_configure_pin(1,1,PORTMODE_INPUT);

	MYSW3=1;
	
	P2_4=1;
	P2_5=1;
	P2_6=0;

	timer0_init();
	EA=1;
	while(1);
}