第十届蓝桥杯单片机国赛源码

Posted 2021-05-28 时光654

这是本人第二次刷国赛程序了，感觉轻松了很多，主函数用了3个小时完成。
本次分享主函数，内部用到了一些巧的思想，而且几乎没有多余语句。
如果你都能理解，你一定会有一个提高。

（我可能会展示两天就删了）

#include "bsp_csb.h"
#include "bsp_ds18b20.h"
#include "bsp_iic.h"
#include "bsp_init.h"
#include "bsp_key.h"
#include "bsp_led.h"
#include "bsp_turn.h"
#include "sys_timer.h"
#include "sys_uart.h"
#include "stdio.h"
//****************************函数声明
void seg_pricedure();
void key_pricedure();
void per_pricedure();
//****************************全局变量
/*按键*/
unsigned char key_number,key_down,key_up,Key_old;
/*显示*/
unsigned char seg_turn[8];
unsigned char seg_buf[10];
unsigned char seg_temp;
unsigned char ucled;

/*减速*/
unsigned char key_slow_down;
unsigned char seg_slow_down;
unsigned int per_slow_down;
/*标志位*/
unsigned char running_mode; 
// 0x00: 温度数据
// 0x01: 距离数据
// 0x02: 变更次数

// 0x10: 温度参数
// 0x11: 距离参数
/*外设*/
unsigned int temper_number; //温度值
unsigned char read_distance;//超声波距离
unsigned char change_data;  //数据更改次数

struct number
{
	unsigned char temper;   //温度参数
	unsigned char distance; //距离参数
};
struct number parameter = {30,35};
struct number old = {30,35};
bit dac_output_mode = 1; //DA 输出模式 0——模式0 1——模式1
/*串口*/
unsigned char uart_send_buf[12]; //串口发送缓存
unsigned char uart_read_buf[8];
unsigned char uart_temp_number = 0;
/*定时*/
unsigned long dida_number;
unsigned long key_delay; 
void main()
{
	timer1_init();
	close_peripheral();
	timer0_init();
	uart1_init();
	eeprom_read_fun(&change_data,0,1);
	while(1)
	{
		per_pricedure();
		key_pricedure();
		seg_pricedure();
	}
}
//****************************中断
void timer0() interrupt 1
{
	dida_number++;
	if(++key_slow_down == 20) key_slow_down = 0;
	if(++seg_slow_down == 200) seg_slow_down = 0;
	if(++per_slow_down == 400) per_slow_down = 0;
	
	seg_disp_fun(seg_turn,seg_temp);
	if(++seg_temp == 8) seg_temp = 0;
	led_disp(ucled);
}
void uart1() interrupt 4
{
	if(RI)
	{
		RI = 0;
		uart_read_buf[uart_temp_number++] = SBUF;
	}
}

//****************************按键
void key_pricedure()
{
	if(key_slow_down) return;
	key_slow_down = 1;
	
	key_number = key_trigger();
	key_down = (key_number ^ Key_old) & key_number;
	key_up = (~key_number) & (key_number ^ Key_old);
	Key_old = key_number;
	
	if(key_down) key_delay = dida_number;
	
	//************短按按键
	if(dida_number - key_delay < 1000)  
	switch(key_up)
	{
		case 13:
			running_mode &= 0xf0;
			running_mode ^= 0x10;
			if(((old.temper != parameter.temper) | (old.distance != parameter.distance)) && (running_mode == 0x00))
			{
				old.temper = parameter.temper;
				old.distance = parameter.distance;
				change_data++;
				eeprom_wrire_fun(&change_data,0,1);
			}
			break;
		case 12:
			if((running_mode & 0x10) == 0x00)
			{
				if(++running_mode == 0x03) running_mode = 0x00;
			}
			else
			{
				if(++running_mode == 0x12) running_mode = 0x10;
			}
			break;
		case 16: //-
			if(running_mode == 0x10)            //温度参数
			{
				parameter.temper -= 2;
				if(parameter.temper <= 0) parameter.temper = 99;
			}
			else if(running_mode == 0x11)	//距离参数
			{
				parameter.distance -= 5;
				if(parameter.distance <= 0) parameter.distance = 95;
			}
			break;
		case 17: //+
			if(running_mode == 0x10)            //温度参数
			{
				parameter.temper += 2;
				if(parameter.temper > 99) parameter.temper = 0;
			}
			else if(running_mode == 0x11)	//距离参数
			{
				parameter.distance += 5;
				if(parameter.distance > 99) parameter.distance = 0;
			}
			break;
	}
	//************长按按键
	else 
	switch(key_up)
	{
		case 12:
			change_data = 0;
			eeprom_wrire_fun(&change_data,0,1);
			break;
		case 13:
			dac_output_mode ^= 1;
			break;
	}
}

//****************************显示
void seg_pricedure()
{
	if(seg_slow_down) return;
	seg_slow_down = 1;
	switch(running_mode)
	{
		case 0x00:
			sprintf(seg_buf,"C   %5.2f",(temper_number / 16.0));
			break;
		case 0x01:
			sprintf(seg_buf,"L     %2d",(unsigned int)read_distance);
			break;
		case 0x02:
			sprintf(seg_buf,"N    %3d",(unsigned int)change_data);
			break;
		case 0x10:
			sprintf(seg_buf,"P  1  %2d",(unsigned int)parameter.temper);
			break;
		case 0x11:
			sprintf(seg_buf,"P  2  %2d",(unsigned int)parameter.distance);
			break;
	}
	
	seg_turn_fun(seg_turn,seg_buf);
}

//****************************外设
void per_pricedure()
{
	if(per_slow_down) return;
	per_slow_down = 1;
	
	temper_number = read_temperature_fun();
	read_distance = read_csb_number();
	//*************DAC
	if(dac_output_mode) //DAC 开启状态
	{
		if(read_distance <= parameter.distance) 
			da_turn_fun(102);
		else
			da_turn_fun(204);
	}
	else				//DAC 关闭状态
	da_turn_fun(25);
	//*************LED
	if((temper_number>>4) > old.temper) ucled |= 0x01;
	else ucled &= 0xfe;
	if(read_distance < old.distance) ucled |= 0x02;
	else ucled &= 0xfd;
	if(dac_output_mode) ucled |= 0x04;
	else ucled &= 0xfb;
	//**************串口
	if(uart_read_buf[uart_temp_number - 1] == '\\n')
	{
		uart_temp_number = 0; 
		if((uart_read_buf[0] == 'S') && (uart_read_buf[1] == 'T') && (uart_read_buf[2] == '\\r'))
			sprintf(uart_send_buf,"$%2d,%2d.%2d\\r\\n",(unsigned int)read_distance,(temper_number>>4),((temper_number * 100) >> 4) % 100);
		else if((uart_read_buf[0] == 'P') && (uart_read_buf[1] == 'A') && (uart_read_buf[2] == 'R') && (uart_read_buf[3] == 'A') && (uart_read_buf[4] == '\\r'))
			sprintf(uart_send_buf,"#%2d,%2d\\r\\n",(unsigned int)old.distance,(unsigned int)old.temper);
		else
			sprintf(uart_send_buf,"ERROR\\r\\n");
		
		uart_send_fun(uart_send_buf);
	}
	else if(uart_temp_number >= 7) 
	{
		uart_temp_number = 0;
		sprintf(uart_send_buf,"ERROR\\r\\n");	
		uart_send_fun(uart_send_buf);
	}
}