Java教程
【蓝桥杯-单片机省赛】第十届
本文主要是介绍【蓝桥杯-单片机省赛】第十届，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
1.主函数main.c
#include "stc15f2k60s2.h"
#include "hc138.h"
#include "smg.h"
#include "key.h"
#include "fre.h"
#include "iic.h"
extern unsigned char flag_500ms;
extern bit swit;
extern bit dac_out;
extern bit led_swi;
extern bit smg_swi;
long count = 0;//频率读取
unsigned int adc = 0;//rb2 电压读取
unsigned char led[6]={0,0,0,0,0,0};
void swit_fun(void);
void dispay_fun(void);
void dac_fun(void);
void led_fun(void);
void main(void) {
all_init();
Timer2Init();
Timer0Init();
while(1) {
BIN();
swit_fun();
dispay_fun();//界面切换
dac_fun();//DAC 输出
led_fun();
}
}
void led_fun(void) {
if (led_swi == 1) {
hc138(4);
P0 = 0xff;
P2 &= 0x1f;
}
else if (led_swi == 0) {
/*--------- L1 与 L2----------*/
if (swit == 0) {//ADC L1
// hc138(4);
// P0 = 0xfe;
// P2 &= 0x1f;
/*----L3-----*/
if ((adc>=150 && adc < 250) || adc>350)
led[3] = 1;
else led[3] = 0;
/*-----L5--------*/
if (dac_out == 0)//2.0v
led[5]=0;
else led[5]=1;
if (led[3] == 1 && led[5] == 1){
hc138(4);
P0 = ~0x15;
P2 &= 0x1f;
}
else if (led[3] == 0 && led[5] == 1) {
hc138(4);
P0 = ~0x11;
P2 &= 0x1f;
}
else if (led[3] == 1 && led[5] == 0) {
hc138(4);
P0 = ~0x05;
P2 &= 0x1f;
}
else {
hc138(4);
P0 = 0xfe;
P2 &= 0x1f;
}
}
else if (swit == 1) {//L2
/*----L4-----*/
if ((count>=1000 && count < 5000) || count>10000)
led[4] = 1;
else led[4] = 0;
if (led[4] == 1) {
hc138(4);
P0 = ~0x0a;
P2 &= 0x1f;
}
else {
hc138(4);
P0 = ~0x02;
P2 &= 0x1f;
}
}
}
}
void dac_fun(void) {
if (dac_out == 0) DAC(103);//2.0v
else if (dac_out == 1) DAC(adc);
}
void swit_fun(void) {
if (swit == 0) adc = ADC_read(3)*1.963;
else {
if (flag_500ms >= 250) {
count = Read_fre();
count *= 2;
flag_500ms = 0;
}
}
}
void dispay_fun(void) {
if (smg_swi == 1) {
smgdat[0] = 21;//U
smgdat[1] = 21;
smgdat[2] = 21;
smgdat[3] = 21;
smgdat[4] = 21;
smgdat[5] = 21;
smgdat[6] = 21;
smgdat[7] = 21;
}
else {
if (swit == 0) {
//电压测量
smgdat[0] = 23;//U
smgdat[1] = 21;
smgdat[2] = 21;
smgdat[3] = 21;
smgdat[4] = 21;
smgdat[5] = adc /100 + 10;
smgdat[6] = adc % 100 /10;
smgdat[7] = adc % 10;
}
else if (swit == 1) {
//频率测量
if (flag_500ms >= 250) {
count = Read_fre();
count *= 2;
flag_500ms = 0;
}
smgdat[0] = 22;//F
smgdat[2] = 21;
smgdat[1] = 21;
smgdat[6] = count % 100 /10;
smgdat[7] = count % 10;
if (count % 100000/ 10000 != 0) {
smgdat[2] = 21;
smgdat[3] = count %100000/ 10000;
smgdat[4] = count % 10000 /1000;
smgdat[5] = count % 1000 /100;
}
else if (count % 10000 /1000 != 0) {
smgdat[2] = 21;
smgdat[3] = 21;
smgdat[4] = count % 10000 /1000;
smgdat[5] = count % 1000 /100;
}
else if (count % 1000 /100 != 0) {
smgdat[2] = 21;
smgdat[3] = 21;
smgdat[4] = 21;
smgdat[5] = count % 1000 /100;
}
}
}
}
2.频率测量
#include "stc15f2k60s2.h"
void Timer0Init(void) //100微秒@12.000MHz
{
AUXR |= 0x80; //定时器时钟1T模式
TMOD &= 0xF0; //设置定时器模式
TMOD |= 0x04;
TL0 = 0; //设置定时初值
TH0 = 0; //设置定时初值
TF0 = 0; //清除TF0标志
TR0 = 0; //定时器0开始计时
EA = 1;
ET0 = 0;
}
unsigned int Read_fre(void) {
unsigned int count_f = 0;
TR0 = 0;
count_f = (TH0<<8) | TL0;
TH0 = 0;
TL0 = 0;
TR0 = 1;
return count_f;
}
3. iic.c ADC和DAC
// ADC 数 模
unsigned char ADC_read(unsigned char channel) {
unsigned char temp;
EA = 0;
IIC_Start();
IIC_SendByte(0x90);//写入
IIC_WaitAck();
IIC_SendByte(channel);// 1 光敏电阻 3 滑动变阻器
IIC_WaitAck();
IIC_Start();
IIC_SendByte(0x91);//读
IIC_WaitAck();
temp = IIC_RecByte();
IIC_WaitAck();
IIC_Stop();
EA = 1;
return temp;
}
// DAC 数 模
void DAC(unsigned char dat) {
EA = 0;
IIC_Start();
IIC_SendByte(0x90);
IIC_WaitAck();
IIC_SendByte(0x40);
IIC_WaitAck();
IIC_SendByte(dat);
IIC_WaitAck();
IIC_Stop();
EA = 1;
}
4.key.c 按键
#include "stc15f2k60s2.h"
#include "hc138.h"
sbit S7 = P3^0;
sbit S6 = P3^1;
sbit S5 = P3^2;
sbit S4 = P3^3;
/*
界面切换
0 电压测量
1 频率测量
*/
bit swit = 0;
/*
DAC 输出模式
0 DAC=2.0
1 DAC=VRB2
*/
bit dac_out = 0;
/*
LED 指示
0 开启
1 关闭
*/
bit led_swi = 0;
/*
数码管显示
0 开启
1 关闭
*/
bit smg_swi = 0;
void Delay5ms() //@12.000MHz
{
unsigned char i, j;
i = 59;
j = 90;
do
{
while (--j);
} while (--i);
}
void BIN(void) {
if (S7 == 0) {
Delay5ms();
if (S7 == 0) {
if (smg_swi == 0) smg_swi = 1;
else if (smg_swi == 1) smg_swi = 0;
}
while(!S7);
}
else if (S6 == 0) {
Delay5ms();
if (S6 == 0) {
if (led_swi == 0) led_swi = 1;
else if (led_swi == 1) led_swi = 0;
}
while(!S6);
}
else if (S5 == 0) {
Delay5ms();
if (S5 == 0) {
if (dac_out == 0) dac_out = 1;
else if (dac_out == 1) dac_out = 0;
}
while(!S5);
}
else if (S4 == 0) {
Delay5ms();
if (S4 == 0) {
if (swit == 0) swit = 1;
else if (swit == 1) swit = 0;
}
while(!S4);
}
}
5.数码管显示 smg.c
#include "stc15f2k60s2.h"
#include "hc138.h"
unsigned char smgdat[8]={21,21,21,21,21,21,21,21};
unsigned char code SMG[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,
0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10,
0xbf,0xff,~0x71,~0x3e};
// F U
unsigned char POS;
unsigned char flag_500ms = 0;
void Timer2Init(void) //2毫秒@12.000MHz
{
AUXR |= 0x04; //定时器时钟1T模式
T2L = 0x40; //设置定时初值
T2H = 0xA2; //设置定时初值
AUXR |= 0x10; //定时器2开始计时
/*后加的部分*/
EA=1;
IE2|=0x04;
}
void display(unsigned char pos,dat){
hc138(6);P0=0x01<<pos;P2&=0x1f;
hc138(7);P0=dat; P2&=0x1f;
}
void T2_Display()interrupt 12
{
hc138(6);P0=0x00;
display(POS,SMG[smgdat[POS]]);
if(++POS==8)POS=0;
flag_500ms++;
}
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