蓝桥杯单片机第六届模拟预赛题参考答案温度记录器 -

#include "ds18b20.h"
#include "K60S2.h"
/****************************变量 & 宏定义************************/
/*---------------系统全局-------------*/
#define RESET 0
#define SET 1
#define Write_138(com , dat) {P2 = com; P0 = dat;}
ulong time_base_2ms = 0;
enum{
win_state_def,
win_state_edit
}win_state ;//= win_state_edit;
/*---------------LED-------------*/
#define LED_ON 0
#define LED_OFF 1
bit L1_flash_flg = SET;
enum{
L1_flash_interval_2,
L1_flash_interval_4,
L1_flash_interval_8
}L1_flash_interval;
/*---------------数码管-------------*/
code uchar smg_code[]={0xc0, 0xf9, 0xa4, 0xb0, 0x99, 0x92, 0x82, 0xf8, 0x80, 0x90,0xff,0xbf};
uchar smg_buf[8]={10,10,10,10,10,10,10,1};
bit smg_changed_flg = RESET;
/*---------------键盘-------------*/
uchar key_value = 0;
bit key_scan_flg = SET;
uchar key_buf[4]={10,10,10,10};
uchar key_buf_point = 0;
bit put_set_key_flg = RESET;
bit input_finished_flg = RESET;
/*---------------DS18B20-------------*/
bit temp_read_flg = SET;
uchar temp_max = 30;
uchar temp_min = 20;
uchar current_temp = 0;
bit temp_arg_err_flg = RESET;
enum{
temp_interval_0,
temp_interval_1,
temp_interval_2
}temp_interval;
/*-----------蜂鸣器 & 继电器-----------*/
#define RELAY_ON 0
#define RELAY_OFF 1
/**************************函数************************/
/*=================LED================*/
void Led_disp(uchar L_x , bit state){
if(state == LED_ON){
switch(L_x){
case 1:
Write_138(0x1f , 0xff);
Write_138(0x04<<5 , 0xfe);
Write_138(0x1f , 0x00);
break;
case 2:
Write_138(0x1f , 0xff);
Write_138(0x04<<5 , 0xfd);
Write_138(0x1f , 0x00);
break;
}
}
else{
switch(L_x){
case 1:
Write_138(0x1f , 0xff);
Write_138(0x04<<5 , 0xff);
Write_138(0x1f , 0x00);
break;
case 2:
Write_138(0x1f , 0xff);
Write_138(0x04<<5 , 0xff);
Write_138(0x1f , 0x00);
break;
}
}
}
/*================数码管================*/
void Smg_disp(){
static uchar smg_addr = 0;
Write_138(0x06<<5 , 0x00);
Write_138(0x1f , 0xff);
Write_138(0x07<<5 , smg_code[smg_buf[smg_addr]]);
Write_138(0x1f , 0x00);
Write_138(0x06<<5 , 0x01 << smg_addr);
Write_138(0x1f , 0x00);
smg_addr++;
if(smg_addr >= 8) smg_addr = 0;
}
/*================蜂鸣器 & 继电器================*/
void Relay(bit state){
if(state == RELAY_ON){
Write_138(0x05<<5 , 0x01<<4);
}
else{
Write_138(0x05<<5 , 0x00);
}
}
/*================矩阵键盘================*/
void Key_scan(){
uchar row = 1;
uchar col = 0;
uchar tmp = 0;
P3 = 0x0f;
P42 = 0;
P44 = 0;
tmp = P3 & 0x0f;
if(tmp != 0x0f){
switch(tmp){
case 0x0e:
row = 1;
break;
case 0x0d:
row = 2;
break;
case 0x0b:
row = 3;
break;
case 0x07:
row = 4;
break;
}
P3 = 0xf0;
P42 = 1;
P44 = 1;
if(P44 == 0) col = 1;
else if(P42 == 0) col = 2;
else if(P35 == 0) col = 3;
else if(P34 == 0) col = 4;
while(!P44 || !P42 || !P35 || !P34) ;
key_value = 4*(row-1) + col;
}
else key_value = 0;
}
void Put_set_key(){
if(win_state == win_state_def){
win_state = win_state_edit;
key_buf[0] = 10;
key_buf[1] = 10;
key_buf[2] = 10;
key_buf[3] = 10;
key_buf_point = 0;
input_finished_flg = RESET;
smg_changed_flg = RESET;
}
else{
if(input_finished_flg == SET && temp_arg_err_flg == RESET){
win_state = win_state_def;
smg_changed_flg = RESET;
}
}
}
void Put_reset_key(){
if(win_state == win_state_edit){
key_buf[0] = 10;
key_buf[1] = 10;
key_buf[2] = 10;
key_buf[3] = 10;
input_finished_flg = RESET;
temp_arg_err_flg = RESET;
key_buf_point = 0;
}
}
void Key_ack(){
if(key_value != 0){
switch(key_value){
case 1:
if(input_finished_flg == RESET){
key_buf[key_buf_point] = 0;
key_buf_point++;
}
break;
case 2:
if(input_finished_flg == RESET){
key_buf[key_buf_point] = 1;
key_buf_point++;
}
break;
case 3:
if(input_finished_flg == RESET){
key_buf[key_buf_point] = 2;
key_buf_point++;
}
break;
case 5:
if(input_finished_flg == RESET){
key_buf[key_buf_point] = 3;
key_buf_point++;
}
break;
case 6:
if(input_finished_flg == RESET){
key_buf[key_buf_point] = 4;
key_buf_point++;
}
break;
case 7:
if(input_finished_flg == RESET){
key_buf[key_buf_point] = 5;
key_buf_point++;
}
break;
case 9:
if(input_finished_flg == RESET){
key_buf[key_buf_point] = 6;
key_buf_point++;
}
break;
case 10:
if(input_finished_flg == RESET){
key_buf[key_buf_point] = 7;
key_buf_point++;
}
break;
case 11:
if(input_finished_flg == RESET){
key_buf[key_buf_point] = 8;
key_buf_point++;
}
break;
case 13:
if(input_finished_flg == RESET){
key_buf[key_buf_point] = 9;
key_buf_point++;
}
break;
case 14:
Put_set_key();
break;
case 15:
Put_reset_key();
break;
}
key_value = 0;
if(key_buf_point >= 4) input_finished_flg = SET;
}
}
/*================界面状态================*/
void Windows_def(){
if(current_temp < temp_min){
temp_interval = temp_interval_0;
L1_flash_interval = L1_flash_interval_2;
Relay(RELAY_OFF);
}
else if(current_temp >= temp_min && current_temp <= temp_max){
temp_interval = temp_interval_1;
L1_flash_interval = L1_flash_interval_4;
Relay(RELAY_OFF);
}
else{
temp_interval = temp_interval_2;
L1_flash_interval = L1_flash_interval_8;
Relay(RELAY_ON);
}
smg_buf[1] = temp_interval;
smg_buf[6] = current_temp / 10;
smg_buf[7] = current_temp % 10;
if(smg_changed_flg == RESET){
smg_buf[0] = 11;
smg_buf[2] = 11;
smg_buf[3] = 10;
smg_buf[4] = 10;
smg_buf[5] = 10;
smg_changed_flg = SET;
}
if(L1_flash_flg == SET){
Led_disp(1,LED_ON);
}
else{
Led_disp(1,LED_OFF);
}
}
void Windows_edit(){
Led_disp(1,LED_OFF);
if(smg_changed_flg == RESET){
smg_buf[0] = 11;
smg_buf[5] = 11;
smg_buf[3] = 10;
smg_buf[4] = 10;
smg_changed_flg = SET;
}
smg_buf[1] = key_buf[0];
smg_buf[2] = key_buf[1];
smg_buf[6] = key_buf[2];
smg_buf[7] = key_buf[3];
if(input_finished_flg == SET){
temp_max = key_buf[0] * 10 + key_buf[1];
temp_min = key_buf[2] * 10 + key_buf[3];
if(temp_max < temp_min){
temp_arg_err_flg = SET;
Led_disp(2,LED_ON);
}
else{
temp_arg_err_flg = RESET;
Led_disp(2,LED_OFF);
}
}
}
void Windows_disp(){
switch(win_state){
case win_state_def:
Windows_def();
break;
case win_state_edit:
Windows_edit();
break;
}
}
/*==============系统初始化=============*/
void Timer0Init(void) //1毫秒@11.0592MHz
{
AUXR |= 0x80; //定时器时钟1T模式
TMOD &= 0xF0; //设置定时器模式
// TL0 = 0xCD; //设置定时初值
// TH0 = 0xD4; //设置定时初值
TL0 = 0x9A; //设置定时初值
TH0 = 0xA9; //设置定时初值
// TL0 = 0x00; //设置定时初值
// TH0 = 0x28; //设置定时初值
TF0 = 0; //清除TF0标志
TR0 = 1; //定时器0开始计时
ET0 = 1;
EA = 1;
}
void UartInit(void) //9600bps@11.0592MHz
{
SCON = 0x50; //8位数据,可变波特率
AUXR |= 0x40; //定时器1时钟为Fosc,即1T
AUXR &= 0xFE; //串口1选择定时器1为波特率发生器
TMOD &= 0x0F; //设定定时器1为16位自动重装方式
TL1 = 0xE0; //设定定时初值
TH1 = 0xFE; //设定定时初值
ET1 = 0; //禁止定时器1中断
TR1 = 1; //启动定时器1
}
void System_init(){
Write_138(0x05<<5, 0x00); //关蜂鸣器
Write_138(0x04<<5, 0xff); //关LED
UartInit();
Timer0Init();
Read_temp();
Read_temp();
}
/*================主函数================*/
void main(){
System_init();
while(1){
Windows_disp();
if(key_scan_flg == SET){
key_scan_flg = RESET;
Key_scan();
Key_ack();
}
if(temp_read_flg == SET){
temp_read_flg = RESET;
current_temp = Read_temp();
}
}
}
/*================中断入口==============*/
void Timer0() interrupt 1
{
time_base_2ms++;
Smg_disp();
if(time_base_2ms % 10 == 0){
key_scan_flg = SET;
}
if(time_base_2ms % 250 == 0){
temp_read_flg = SET;
}
if(time_base_2ms % 100 == 0){
switch(L1_flash_interval){
case L1_flash_interval_2:
L1_flash_flg = ~L1_flash_flg;
break;
case L1_flash_interval_4:
if(time_base_2ms % 200 == 0){
L1_flash_flg = ~L1_flash_flg;
}
break;
case L1_flash_interval_8:
if(time_base_2ms % 400 == 0){
L1_flash_flg = ~L1_flash_flg;
}
break;
}
}
}
void Uart0() interrupt 4{
TI = 0;
}

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