蓝桥杯单片机第12届省赛程序题参考答案
答案仅供参考，有错误欢迎指正，非常感谢！！！
文件较多，代码较长，感谢查看！！！
目录
main.h
main.c
Init.h
Init.c
SMG.h
SMG.c
JZKey.h
JZKey.c
DSQ.h
DSQ.c
YanShi.h
YanShi.c
iic.h
iic.c
onewire.h
onewire.c
main.h
#ifndef __MAIN_H_
#define __MAIN_H_
#define uchar unsigned char
#define uint unsigned int
#include
#include "Init.h"
#include "SMG.h"
#include "JZKey.h"
#include "DSQ.h"
#include "YanShi.h"
#include "iic.h"
#include "onewire.h"
void JieMian_Show();
void LED_Show();
#endif main.c
#include "main.h"
uchar key_num=0;
uchar jie_mian=0;
char WenDu_CanShu=25;
uchar mo_shi=0;
uchar flag0=0;
uint wen_du;
uint dian_ya;
void main(){
Init_BanZi();
SMG_Init();
DSQ_0_Init();
JZKey_Init();
while(1){
key_num=JZKey_GetKeynum();
if(key_num==4){
jie_mian++;
jie_mian=jie_mian%3;
}
else if(key_num==8&&jie_mian==1){
WenDu_CanShu--;
if(WenDu_CanShu<=0){
WenDu_CanShu=0;
}
}
else if(key_num==9&&jie_mian==1){
WenDu_CanShu++;
if(WenDu_CanShu>=99){
WenDu_CanShu=99;
}
}
else if(key_num==5){
mo_shi++;
mo_shi=mo_shi%2;
}
wen_du=DS18B20_GetWenDu()*100;
if(mo_shi==0){//DAC输出电压与温度相关
if(wen_du<(WenDu_CanShu*100)){//实时温度小于温度参数，输出0V
dian_ya=0;
IIC_DAC_XieDate(0);
}
else{//否则输出5V
dian_ya=500;
IIC_DAC_XieDate(255);
}
}
else if(mo_shi==1){//DAC输出电压与函数相关
if(wen_du<2000){
dian_ya=100;
IIC_DAC_XieDate(51);
}
else if(wen_du>=2000&&wen_du<=4000){
dian_ya=(wen_du*1.0)*(3.0/20.0)-200;
IIC_DAC_XieDate((dian_ya*51.0)/100.0);
}
else if(wen_du>4000){
dian_ya=400;
IIC_DAC_XieDate(204);
}
}
}
}
void DSQ_0_ZD() interrupt 1{
flag0++;
if(flag0>=1){
flag0=0;
JieMian_Show();
LED_Show();
}
}
void JieMian_Show(){//界面显示
switch(jie_mian){
case 0:{//温度显示界面
if(wen_du>=1000){
SMG_Show(12,16,16,16,wen_du/1000,((wen_du/100)%10)+32,(wen_du/10)%10,wen_du%10);
}
else if(wen_du>=0){
SMG_Show(12,16,16,16,16,(wen_du/100)+32,(wen_du/10)%10,wen_du%10);
}
break;
}
case 1:{//参数设置界面
if(WenDu_CanShu>=10){
SMG_Show(18,16,16,16,16,16,WenDu_CanShu/10,WenDu_CanShu%10);
}
else if(WenDu_CanShu>=0){
SMG_Show(18,16,16,16,16,16,16,WenDu_CanShu);
}
break;
}
case 2:{//DAC输出界面
SMG_Show(12,16,16,16,16,(dian_ya/100)+32,(dian_ya/10)%10,dian_ya%10);
break;
}
}
}
void LED_Show(){
uchar L1=0xff;
uchar L2_4=0xff;
if(mo_shi==0){//处于模式1状态，L1亮
L1=0xfe;
}
else if(mo_shi==1){//不处于模式1状态，L1灭
L1=0xff;
}
switch(jie_mian){
case 0:{
L2_4=0xfd;
break;
}
case 1:{
L2_4=0xfb;
break;
}
case 2:{
L2_4=0xf7;
break;
}
}
P0=L1&L2_4;
P2=(P2&0x1f)|0x80;
P2=(P2&0x1f)|0x00;
}
Init.h
#ifndef __INIT_H_
#define __INIT_H_
#include
void Init_BanZi();
#endif
Init.c
#include "Init.h"
void Init_BanZi(){
P2=(P2&0x1f)|0xa0;
P0=0x00;
P2=(P2&0x1f)|0x80;
P0=0xff;
}
SMG.h
#ifndef __SMG_H_
#define __SMG_H_
#include
void SMG_Init();
void SMG_Show(unsigned char n1,n2,n3,n4,n5,n6,n7,n8);
#endif
SMG.c
#include "SMG.h"
unsigned char code SMG_ZK[]={ //标准字库
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71,
//black - H J K L N o P U t G Q r M y
0x00,0x40,0x76,0x1E,0x70,0x38,0x37,0x5C,0x73,0x3E,0x78,0x3d,0x67,0x50,0x37,0x6e,
0xBF,0x86,0xDB,0xCF,0xE6,0xED,0xFD,0x87,0xFF,0xEF,0x46}; //0. 1. 2. 3. 4. 5. 6. 7. 8. 9. -1
void SMG_Init(){
P2=(P2&0x1f)|0xc0;
P0=0xff;
P2=(P2&0x1f)|0xe0;
P0=0xff;
}
void SMG_Show(unsigned char n1,n2,n3,n4,n5,n6,n7,n8){
static unsigned char i=0;
i++;
i=i%8;
P2=(P2&0x1f)|0xc0;
switch(i){
case 1:{
P0=0x01;
P2=(P2&0x1f)|0xe0;
P0=~SMG_ZK[n1];
break;
}
case 2:{
P0=0x02;
P2=(P2&0x1f)|0xe0;
P0=~SMG_ZK[n2];
break;
}
case 3:{
P0=0x04;
P2=(P2&0x1f)|0xe0;
P0=~SMG_ZK[n3];
break;
}
case 4:{
P0=0x08;
P2=(P2&0x1f)|0xe0;
P0=~SMG_ZK[n4];
break;
}
case 5:{
P0=0x10;
P2=(P2&0x1f)|0xe0;
P0=~SMG_ZK[n5];
break;
}
case 6:{
P0=0x20;
P2=(P2&0x1f)|0xe0;
P0=~SMG_ZK[n6];
break;
}
case 7:{
P0=0x40;
P2=(P2&0x1f)|0xe0;
P0=~SMG_ZK[n7];
break;
}
case 0:{
P0=0x80;
P2=(P2&0x1f)|0xe0;
P0=~SMG_ZK[n8];
break;
}
}
P2=(P2&0x1f)|0x00;
}
JZKey.h
#ifndef __JZKEY_H_
#define __JZKEY_H_
#include "YanShi.h"
void JZKey_Init();
unsigned char JZKey_GetKeynum();
#endif
JZKey.c
#include "JZKey.h"
void JZKey_Init(){
P30=1;
P31=1;
P32=1;
P33=1;
P34=0;
P35=0;
P42=0;
P44=0;
}
unsigned char JZKey_GetKeynum(){
unsigned char key_num=0;
if(P30==0){
P30=0;
P34=1;
P35=1;
P42=1;
P44=1;
if(P34==0){
Delay10ms();
if(P34==0){
key_num=19;
}
while(P34==0);
}
else if(P35==0){
Delay10ms();
if(P35==0){
key_num=15;
}
while(P35==0);
}
else if(P42==0){
Delay10ms();
if(P42==0){
key_num=11;
}
while(P42==0);
}
else if(P44==0){
Delay10ms();
if(P44==0){
key_num=7;
}
while(P44==0);
}
}
else if(P31==0){
P31=0;
P34=1;
P35=1;
P42=1;
P44=1;
if(P34==0){
Delay10ms();
if(P34==0){
key_num=18;
}
while(P34==0);
}
else if(P35==0){
Delay10ms();
if(P35==0){
key_num=14;
}
while(P35==0);
}
else if(P42==0){
Delay10ms();
if(P42==0){
key_num=10;
}
while(P42==0);
}
else if(P44==0){
Delay10ms();
if(P44==0){
key_num=6;
}
while(P44==0);
}
}
else if(P32==0){
P32=0;
P34=1;
P35=1;
P42=1;
P44=1;
if(P34==0){
Delay10ms();
if(P34==0){
key_num=17;
}
while(P34==0);
}
else if(P35==0){
Delay10ms();
if(P35==0){
key_num=13;
}
while(P35==0);
}
else if(P42==0){
Delay10ms();
if(P42==0){
key_num=9;
}
while(P42==0);
}
else if(P44==0){
Delay10ms();
if(P44==0){
key_num=5;
}
while(P44==0);
}
}
else if(P33==0){
P33=0;
P34=1;
P35=1;
P42=1;
P44=1;
if(P34==0){
Delay10ms();
if(P34==0){
key_num=16;
}
while(P34==0);
}
else if(P35==0){
Delay10ms();
if(P35==0){
key_num=12;
}
while(P35==0);
}
else if(P42==0){
Delay10ms();
if(P42==0){
key_num=8;
}
while(P42==0);
}
else if(P44==0){
Delay10ms();
if(P44==0){
key_num=4;
}
while(P44==0);
}
}
JZKey_Init();
return key_num;
}
DSQ.h
#ifndef __DSQ_H_
#define __DSQ_H_
#include
void DSQ_0_Init();
#endif
DSQ.c
#include "DSQ.h"
void DSQ_0_Init(){
AUXR |= 0x80; //定时器时钟1T模式
TMOD &= 0xF0; //设置定时器模式
TL0 = 0x20; //设置定时初值
TH0 = 0xD1; //设置定时初值
TF0 = 0; //清除TF0标志
TR0 = 1; //定时器0开始计时
EA=1;
ET0=1;
}
YanShi.h
#ifndef __YANSHI_H_
#define __YANSHI_H_
#include
#include "intrins.h"
void Delay10ms();
#endif
YanShi.c
#include "YanShi.h"
void Delay10ms() //@12.000MHz
{
unsigned char i, j;
i = 117;
j = 184;
do
{
while (--j);
} while (--i);
}
iic.h
#ifndef _IIC_H
#define _IIC_H
#include
void IIC_Start(void);
void IIC_Stop(void);
bit IIC_WaitAck(void);
void IIC_SendAck(bit ackbit);
void IIC_SendByte(unsigned char byt);
unsigned char IIC_RecByte(void);
unsigned char IIC_ADC_GetDate(unsigned char di_zhi);
void IIC_DAC_XieDate(unsigned char date);
void IIC_EEPROM_XieDate(unsigned char di_zhi,unsigned char date);
unsigned char IIC_EEPROM_GetDate(unsigned char di_zhi);
#endif
iic.c
/*
程序说明: IIC总线驱动程序
软件环境: Keil uVision 4.10
硬件环境: CT107单片机综合实训平台 8051，12MHz
日 期: 2011-8-9
*/
#include "iic.h"
#include "intrins.h"
#define DELAY_TIME 5
#define SlaveAddrW 0xA0
#define SlaveAddrR 0xA1
//总线引脚定义
sbit SDA = P2^1; /* 数据线 */
sbit SCL = P2^0; /* 时钟线 */
void IIC_Delay(unsigned char i)
{
do{_nop_();}
while(i--);
}
//总线启动条件
void IIC_Start(void)
{
SDA = 1;
SCL = 1;
IIC_Delay(DELAY_TIME);
SDA = 0;
IIC_Delay(DELAY_TIME);
SCL = 0;
}
//总线停止条件
void IIC_Stop(void)
{
SDA = 0;
SCL = 1;
IIC_Delay(DELAY_TIME);
SDA = 1;
IIC_Delay(DELAY_TIME);
}
//发送应答
void IIC_SendAck(bit ackbit)
{
SCL = 0;
SDA = ackbit; // 0：应答，1：非应答
IIC_Delay(DELAY_TIME);
SCL = 1;
IIC_Delay(DELAY_TIME);
SCL = 0;
SDA = 1;
IIC_Delay(DELAY_TIME);
}
//等待应答
bit IIC_WaitAck(void)
{
bit ackbit;
SCL = 1;
IIC_Delay(DELAY_TIME);
ackbit = SDA;
SCL = 0;
IIC_Delay(DELAY_TIME);
return ackbit;
}
//通过I2C总线发送数据
void IIC_SendByte(unsigned char byt)
{
unsigned char i;
for(i=0; i<8; i++)
{
SCL = 0;
IIC_Delay(DELAY_TIME);
if(byt & 0x80) SDA = 1;
else SDA = 0;
IIC_Delay(DELAY_TIME);
SCL = 1;
byt <<= 1;
IIC_Delay(DELAY_TIME);
}
SCL = 0;
}
//从I2C总线上接收数据
unsigned char IIC_RecByte(void)
{
unsigned char i, da;
for(i=0; i<8; i++)
{
SCL = 1;
IIC_Delay(DELAY_TIME);
da <<= 1;
if(SDA) da |= 1;
SCL = 0;
IIC_Delay(DELAY_TIME);
}
return da;
}
unsigned char IIC_ADC_GetDate(unsigned char di_zhi){
unsigned char date;
IIC_Start();
IIC_SendByte(0x90);
IIC_WaitAck();
IIC_SendByte(di_zhi);
IIC_WaitAck();
IIC_Stop();
IIC_Start();
IIC_SendByte(0x91);
IIC_WaitAck();
date=IIC_RecByte();
IIC_SendAck(1);
IIC_WaitAck();
IIC_Stop();
return date;
}
void IIC_DAC_XieDate(unsigned char date){
IIC_Start();
IIC_SendByte(0x90);
IIC_WaitAck();
IIC_SendByte(0x40);
IIC_WaitAck();
IIC_SendByte(date);
IIC_WaitAck();
IIC_Stop();
}
void IIC_EEPROM_XieDate(unsigned char di_zhi,unsigned char date){
IIC_Start();
IIC_SendByte(0xa0);
IIC_WaitAck();
IIC_SendByte(di_zhi);
IIC_WaitAck();
IIC_SendByte(date);
IIC_WaitAck();
IIC_Stop();
}
unsigned char IIC_EEPROM_GetDate(unsigned char di_zhi){
unsigned char date;
IIC_Start();
IIC_SendByte(0xa0);
IIC_WaitAck();
IIC_SendByte(di_zhi);
IIC_WaitAck();
IIC_Stop();
IIC_Start();
IIC_SendByte(0xa1);
IIC_WaitAck();
date=IIC_RecByte();
IIC_SendAck(1);
IIC_WaitAck();
IIC_Stop();
return date;
}
onewire.h
#ifndef __ONEWIRE_H
#define __ONEWIRE_H
#include
unsigned char rd_temperature(void); //; ;
double DS18B20_GetWenDu();
#endif
onewire.c
/*
程序说明: 单总线驱动程序
软件环境: Keil uVision 4.10
硬件环境: CT107单片机综合实训平台(外部晶振12MHz) STC89C52RC单片机
日 期: 2011-8-9
*/
#include "onewire.h"
sbit DQ = P1^4; //单总线接口
//单总线延时函数
void Delay_OneWire(unsigned int t) //STC89C52RC
{
unsigned char i;
while(t--){
for(i=0;i<12;i++);
}
}
//通过单总线向DS18B20写一个字节
void Write_DS18B20(unsigned char dat)
{
unsigned char i;
for(i=0;i<8;i++)
{
DQ = 0;
DQ = dat&0x01;
Delay_OneWire(5);
DQ = 1;
dat >>= 1;
}
Delay_OneWire(5);
}
//从DS18B20读取一个字节
unsigned char Read_DS18B20(void)
{
unsigned char i;
unsigned char dat;
for(i=0;i<8;i++)
{
DQ = 0;
dat >>= 1;
DQ = 1;
if(DQ)
{
dat |= 0x80;
}
Delay_OneWire(5);
}
return dat;
}
//DS18B20设备初始化
bit init_ds18b20(void)
{
bit initflag = 0;
DQ = 1;
Delay_OneWire(12);
DQ = 0;
Delay_OneWire(80);
DQ = 1;
Delay_OneWire(10);
initflag = DQ;
Delay_OneWire(5);
return initflag;
}
double DS18B20_GetWenDu(){
double wen_du,zheng_shu,xiao_shu;
unsigned char di,gao;
init_ds18b20();
Write_DS18B20(0xcc);
Write_DS18B20(0x44);
Delay_OneWire(200);
init_ds18b20();
EA=0;
Write_DS18B20(0xcc);
Write_DS18B20(0xbe);
EA=1;
EA=0;
di=Read_DS18B20();
gao=Read_DS18B20();
EA=1;
if(gao>=248){
di=~di;
gao=~gao;
if(di==0xff){
di=0;
gao++;
}
else{
di++;
}
zheng_shu=((gao<<4)|(di>>4))*1.0;
xiao_shu=(di&0x0f)*0.0625;
wen_du=-(zheng_shu+xiao_shu);
}
else{
zheng_shu=((gao<<4)|(di>>4))*1.0;
xiao_shu=(di&0x0f)*0.0625;
wen_du=(zheng_shu+xiao_shu);
}
return wen_du;
}