led.c

自己设计的pic单片机开发板源程序和说明书（内有原理图）支持pic16系列28脚和40脚器件。串口输出信息。4个LED数码管驱动；4个LED驱动；4个按键驱动；1个RS232接口；1个RS485接口；

//#include "..\demo\def.h"
//																			a	b
const int8 table[17] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};
//extern int8 buffer[8];
void led_off()
{
	input(led1);
	output_high(led2);
	input(led3);
	input(led4);
	input_b();
}
int8 Test_led()
{
	while(TRUE)
	{
		if(kbhit())
		{
			if(getc()==ESC_KEY)
			{
				led_off();
				return;
			}
		}
		
		output_low(led1);
		output_low(led2);
		output_low(led3);
		output_low(led4);
		delay_ms(400);
		output_high(led1);
		output_float(led2);
		output_high(led3);
		output_high(led4);
		delay_ms(500);
	}
}
void disp(int8 n)
{
int8  seg;
int8 i,j;

	for(j = 0; j < n; j++)
	{
		for(i = 0;i < 4;i++)
		{
			seg = table[buffer[i]];
			output_b(seg);
			if(i == 3) output_low(led1);
			if(i == 2) output_low(led2);
			if(i == 1) output_low(led3);
			if(i == 0) output_low(led4);
			delay_ms(2);
			led_off();
		}
	}
}
			


				
int8 Test_seg()
{
int8  i;
int16 num=0;

	led_off();
	
	while(TRUE)
	{
		if(kbhit())
		{
			if(getc()==ESC_KEY)
			{
				led_off();
				return;
			}
		}
			num++;
			buffer[0] = num & 0x000f ;
			buffer[1] = (num >> 4) & 0x000f;
			buffer[2] = (num >> 8) & 0x000f;
			buffer[3] = (num >> 12) & 0x000f;
			disp(30);

	}
}