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/* # I2C代码片段说明1. 本文件夹中提供的驱动代码供参赛选手完成程序设计参考。2. 参赛选手可以自行编写相关代码或以该代码为基础#xff0c;根据所选单片机类型、运行速度和试题中对单片机时钟频率的要求#xff0c;进行代码调试和修改。
*/
#include STC1… iic.c
/* # I2C代码片段说明1. 本文件夹中提供的驱动代码供参赛选手完成程序设计参考。2. 参赛选手可以自行编写相关代码或以该代码为基础根据所选单片机类型、运行速度和试题中对单片机时钟频率的要求进行代码调试和修改。
*/
#include STC15F2K60S2.H
#include iic.h
#include intrins.hsbit scl P2^0;
sbit sda P2^1;#define DELAY_TIME 5//
static void I2C_Delay(unsigned char n)
{do{_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_(); }while(n--);
}//
void I2CStart(void)
{sda 1;scl 1;I2C_Delay(DELAY_TIME);sda 0;I2C_Delay(DELAY_TIME);scl 0;
}//
void I2CStop(void)
{sda 0;scl 1;I2C_Delay(DELAY_TIME);sda 1;I2C_Delay(DELAY_TIME);
}//
void I2CSendByte(unsigned char byt)
{unsigned char i;for(i0; i8; i){scl 0;I2C_Delay(DELAY_TIME);if(byt 0x80){sda 1;}else{sda 0;}I2C_Delay(DELAY_TIME);scl 1;byt 1;I2C_Delay(DELAY_TIME);}scl 0;
}//
unsigned char I2CReceiveByte(void)
{unsigned char da;unsigned char i;for(i0;i8;i){ scl 1;I2C_Delay(DELAY_TIME);da 1;if(sda) da | 0x01;scl 0;I2C_Delay(DELAY_TIME);}return da;
}//
unsigned char I2CWaitAck(void)
{unsigned char ackbit;scl 1;I2C_Delay(DELAY_TIME);ackbit sda; scl 0;I2C_Delay(DELAY_TIME);return ackbit;
}//
void I2CSendAck(unsigned char ackbit)
{scl 0;sda ackbit; I2C_Delay(DELAY_TIME);scl 1;I2C_Delay(DELAY_TIME);scl 0; sda 1;I2C_Delay(DELAY_TIME);
}unsigned char Read_v()
{unsigned int temp;I2CStart();I2CSendByte(0x90);I2CWaitAck();I2CSendByte(0x41);I2CWaitAck();I2CStart();I2CSendByte(0x91);I2CWaitAck();temp I2CReceiveByte();I2CSendAck(1);I2CStop();return temp;
}void Write_v(unsigned char dat)
{I2CStart();I2CSendByte(0x90);I2CWaitAck();I2CSendByte(0x40);I2CWaitAck();I2CSendByte(dat);I2CWaitAck();I2CStop();
} iic.h
#ifndef __iic_h
#define __iic_hstatic void I2C_Delay(unsigned char n);
void I2CStart(void);
void I2CStop(void);
void I2CSendByte(unsigned char byt);
unsigned char I2CReceiveByte(void);
unsigned char I2CWaitAck(void);
void I2CSendAck(unsigned char ackbit);
unsigned char Read_v();
void Write_v(unsigned char dat);#endif
ds1302.c
/* # DS1302代码片段说明1. 本文件夹中提供的驱动代码供参赛选手完成程序设计参考。2. 参赛选手可以自行编写相关代码或以该代码为基础根据所选单片机类型、运行速度和试题中对单片机时钟频率的要求进行代码调试和修改。
*/ //
#include STC15F2K60S2.H
#include ds1302.h
#include intrins.hsbit SCK P1^7;
sbit SDA P2^3;
sbit RST P1^3;code unsigned char Write_addr[] {0x80,0x82,0x84,0x86,0x88,0x8a,0x8c};
code unsigned char Read_addr[] {0x81,0x83,0x85,0x87,0x89,0x8b,0x8d};
unsigned char time[] {0x01,0x20,0x20};void Write_Ds1302(unsigned char temp)
{unsigned char i;for (i0;i8;i) { SCK 0;SDA temp0x01;temp1; SCK1;}
} //
void Write_Ds1302_Byte( unsigned char address,unsigned char dat )
{RST0; _nop_();SCK0; _nop_();RST1; _nop_(); Write_Ds1302(address); Write_Ds1302(dat); RST0;
}//
unsigned char Read_Ds1302_Byte ( unsigned char address )
{unsigned char i,temp0x00;RST0; _nop_();SCK0; _nop_();RST1; _nop_();Write_Ds1302(address);for (i0;i8;i) { SCK0;temp1; if(SDA)temp|0x80; SCK1;} RST0; _nop_();SCK0; _nop_();SCK1; _nop_();SDA0; _nop_();SDA1; _nop_();return (temp);
}void Write_time()
{char i;Write_Ds1302_Byte(0x8e,0x00);for(i 0;i 3;i)Write_Ds1302_Byte(Write_addr[i],time[i]);Write_Ds1302_Byte(0x8e,0x80);
}void Read_time()
{char i;for(i 0;i 3;i)time[i] Read_Ds1302_Byte(Read_addr[i]);
}
ds1302.h
#ifndef __ds1302_h
#define __ds1302_hvoid Write_Ds1302(unsigned char temp);
void Write_Ds1302_Byte( unsigned char address,unsigned char dat );
unsigned char Read_Ds1302_Byte ( unsigned char address );
void Write_time();
void Read_time();#endif
sys.c
#include STC15F2K60S2.H
#include sys.h
#include intrins.hvoid Delay12us() //12.000MHz
{unsigned char i;_nop_();_nop_();i 33;while (--i);
}void Delay_ms(unsigned int t) //12.000MHz
{while(t--){unsigned char i, j;i 12;j 169;do{while (--j);} while (--i);}
}void Select_Hc573(char n)
{switch(n){case 4:P2 P2 0x1f | 0x80;break;case 5:P2 P2 0x1f | 0xa0;break;case 6:P2 P2 0x1f | 0xc0;break;case 7:P2 P2 0x1f | 0xe0;break;}P2 P2 0x1f;
}void Sys_Init()
{P0 0x00;Select_Hc573(5);P0 0xff;Select_Hc573(4);
}void Select_Bit(unsigned char pos,dat)
{P0 0x01 pos;Select_Hc573(6);P0 dat;Select_Hc573(7);Delay_ms(1);P0 0xff;Select_Hc573(7);
}sys.h
#ifndef __sys_h
#define __sys_hvoid Delay12us();
void Delay_ms(unsigned int t) ;
void Select_Hc573(char n);
void Sys_Init();
void Select_Bit(unsigned char pos,dat);#endif
main.c
#include STC15F2K60S2.H
#include ds1302.h
#include iic.h
#include sys.h
#include stdio.hsbit TX P1^0;
sbit RX P1^1;sbit R1 P3^0;
sbit R2 P3^1;
sbit R3 P3^2;
sbit R4 P3^3;
sbit C1 P4^4;
sbit C2 P4^2;
sbit C3 P3^5;
sbit C4 P3^4;code unsigned char SMG[] { ~0x3F,~0x06,~0x5B,~0x4F,~0x66,~0x6D,~0x7D,~0x07,~0x7F,~0x6F,~0x40,~0x38,~0x39,~0x71,~0x76,0xfe,0xbf,0xf7,~0x73};unsigned int dis,distance,a;//距离
bit flag,flag_10ms;
unsigned char count;
unsigned int count1,count2;
extern unsigned char time[];
bit mode_dis;//0-触发 1-定时
unsigned char mode_record;// 0-最大值 1-最小值 2-均值
unsigned char dis_max,dis_min 9;
float dis_sum;
float dis_ave;
char param_time[] {2,3,5,7,9};
char param_time_P[] {2,3,5,7,9};
char index;//时间参数索引
char index_P;//时间参数索引
unsigned int dis_index;//距离索引用于计算平均值
char param_dis 20;
char param_dis_P 20;
unsigned char key_val;
bit mode;//0-数据界面 1-参数界面
unsigned char mode_dat;//0-时间 1-距离 2-数据记录
bit mode_param;// 0-时间 1-距离
bit L5_flag;void PCA_Init()
{P_SW1 0xcf;CCON 0;CH CL 0;CMOD 0x01;CCAPM0 0x10;
}void Send()
{char i;for(i 0;i 8;i){TX 1;Delay12us();TX 0;Delay12us();}CH CL 0;CF CCF0 0;CCAPM0 | 0x01;CR 1;
}void PCA_isr() interrupt 7
{if(CCF0){distance (CCAP0H 8 | CCAP0L) * 0.017;CCF0 0;}else if(CF){distance 99;CF 0;}CCAPM0 (~0x01);CR 0;
}void Display_time()//时间界面
{Select_Bit(0,SMG[time[2] / 16]);Select_Bit(1,SMG[time[2] % 16]);Select_Bit(2,SMG[10]);Select_Bit(3,SMG[time[1] / 16]);Select_Bit(4,SMG[time[1] % 16]);Select_Bit(5,SMG[10]);Select_Bit(6,SMG[time[0] / 16]);Select_Bit(7,SMG[time[0] % 16]);
}void Display_dis()//距离界面
{Select_Bit(0,SMG[11]);if(!mode_dis) Select_Bit(1,SMG[12]);else Select_Bit(1,SMG[13]);if(dis 99) Select_Bit(5,SMG[dis / 100]);if(dis 9) Select_Bit(6,SMG[dis / 10 % 10]);Select_Bit(7,SMG[dis % 10]);}void Display_record()//数据记录界面
{Select_Bit(0,SMG[14]);switch(mode_record){case 0:Select_Bit(1,SMG[15]);if(dis_max 99) Select_Bit(5,SMG[dis_max / 100]); if(dis_max 9) Select_Bit(6,SMG[dis_max / 10 % 10]);Select_Bit(7,SMG[dis_max % 10]);break;case 1:Select_Bit(1,SMG[17]);if(dis_min 99) Select_Bit(5,SMG[dis_min / 100]); if(dis_min 9) Select_Bit(6,SMG[dis_min / 10 % 10]);Select_Bit(7,SMG[dis_min % 10]);break;case 2:Select_Bit(1,SMG[16]);if(dis_ave 99) Select_Bit(4,SMG[((unsigned char)(dis_ave * 10)) / 1000]); if(dis_ave 9) Select_Bit(5,SMG[((unsigned char)(dis_ave * 10)) / 100 % 10]); Select_Bit(6,SMG[((unsigned char)(dis_ave * 10)) / 10 % 10] - 0x80);Select_Bit(7,SMG[((unsigned char)(dis_ave * 10)) % 10]);break;}
}void Display_param_time()//时间参数界面
{Select_Bit(0,SMG[18]);Select_Bit(1,SMG[1]);Select_Bit(6,SMG[param_time[index] / 10]);Select_Bit(7,SMG[param_time[index] % 10]);
}void Display_param_dis()//距离参数界面
{Select_Bit(0,SMG[18]);Select_Bit(1,SMG[2]);Select_Bit(6,SMG[param_dis / 10]);Select_Bit(7,SMG[param_dis % 10]);
}void Timer0Init(void) //10毫秒12.000MHz
{AUXR 0x7F; //定时器时钟12T模式TMOD 0xF0; //设置定时器模式TL0 0xF0; //设置定时初值TH0 0xD8; //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 Timer0_isr() interrupt 1
{flag_10ms 1;if(mode_dis)//定时模式下{count2 0;if(count1 param_time_P[index_P] * 100)//距离的刷新时间等于时间参数才刷新一次{count1 0;flag 1;}}else//触发模式下距离的刷新时间为1秒{count1 0;if(count2 100){count2 0;flag 1;}}
}unsigned char Key_Scan()
{unsigned char temp 0;static unsigned char cnt4 0;static unsigned char cnt5 0;static unsigned char cnt8 0;static unsigned char cnt9 0;if(flag_10ms){R3 0;R1 R2 R4 C1 C2 C3 C4 1;if(C1 0) cnt5;if(C1 1) {if(cnt5 2) temp 5;cnt5 0;}if(C2 0) cnt9;if(C2 1) {if(cnt9 2) temp 9;cnt9 0;}R4 0;R1 R2 R3 C1 C2 C3 C4 1;if(C1 0) cnt4;if(C1 1) {if(cnt4 2) temp 4;cnt4 0;}if(C2 0) cnt8;if(C2 1) {if(cnt8 2) temp 8;cnt8 0;}flag_10ms 0;}return temp;
}void Key_Pro()
{switch(key_val){case 4:mode ^ 1;if(!mode) mode_param 0;else mode_dat 0;break;case 5:if(!mode){if(mode_dat 2)mode_dat 0;}else{mode_param ^ 1;}break;case 8:if(!mode) {if(mode_dat 1) mode_dis ^ 1;if(mode_dat 2){if(mode_record 2)mode_record 0;}}break;case 9:if(mode){if(!mode_param){if(index 4)index 0;}else{param_dis 10;if(param_dis 80)param_dis 10;}}break;}if(mode_dat 1)mode_record 0;if(!mode){param_time_P[index_P] param_time[index];index_P index;param_dis_P param_dis;}
}void Out_dac()//DAC输出
{if(dis 10) Write_v(1 * 51);else if(dis 80) Write_v(5 * 51);else Write_v((((dis - 10) * 4 / 70.0 1)) * 51);
}void Dis_Pro()//超声波测距
{if(flag){flag 0;a distance;if((dis (param_dis_P - 5)) (dis (param_dis_P 5))) count;else {count 0;L5_flag 0;}if(count 3) {L5_flag 1;count 0;}}if(mode_dis){if((time[0] / 16 * 10 time[0] % 16) % param_time_P[index_P] 0){dis a;dis_index;if(dis dis_max) dis_max dis;if(dis dis_min) dis_min dis;dis_sum dis;dis_ave (dis_sum / dis_index);}}else{if(Read_v() 150)if(Read_v() 150){dis distance;dis_index;if(dis dis_max) dis_max dis;if(dis dis_min) dis_min dis;dis_sum dis;dis_ave (dis_sum / dis_index);}}
}void Led(unsigned char addr,enable)
{static unsigned char temp 0x00;static unsigned char temp_old 0xff;if(enable) temp | 0x01 addr;else temp ~(0x01 addr);if(temp ! temp_old){P0 ~temp;Select_Hc573(4);temp_old temp;}
}void Led_Pro()
{if(!mode mode_dat 0) Led(0,1);else Led(0,0);if(!mode mode_dat 1) Led(1,1);else Led(1,0);if(!mode mode_dat 2) Led(2,1);else Led(2,0);if(!mode_dis) Led(3,1);else Led(3,0);if(L5_flag) Led(4,1);else Led(4,0);if(Read_v() 150) Led(5,1);else Led(5,0);
}void UartInit(void) //9600bps12.000MHz
{SCON 0x50; //8位数据,可变波特率AUXR 0xBF; //定时器1时钟为Fosc/12,即12TAUXR 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 0xE6; //设定定时初值TH1 0xFF; //设定定时初值ET1 0; //禁止定时器1中断TR1 1; //启动定时器1
}extern char putchar(char dat)
{SBUF dat;while(!TI);TI 0;return dat;
}void main()
{Sys_Init();PCA_Init();Write_time();Timer0Init();UartInit();while(1){Send();Read_time();key_val Key_Scan();Key_Pro();Out_dac();Dis_Pro();Led_Pro();if(!mode){switch(mode_dat){case 0:Display_time();break;case 1:Display_dis();break;case 2:Display_record();break;}}else{if(!mode_param) Display_param_time();else Display_param_dis();} }
}
