藍橋杯微控制器 第九屆 彩燈控制器
阿新 • • 發佈：2021-01-26
技術標籤：藍橋杯
藍橋杯微控制器 第九屆 彩燈控制器
main.c
#include<STC15F2K60S2.H>
#include<iic.h>
#define u8 unsigned char
#define u16 unsigned int
#define keypress P3
sbit pwm = P0^0;
sbit buzzer = P0^6;
sbit relay = P0^4;
bit smg_flag, keyflag, LED_flag = 0 ;
bit s4_smgflag, ms20_flag;
u16 volt, iic.c
/*
程式說明: IIC匯流排驅動程式
軟體環境: Keil uVision 4.10
硬體環境: CT107微控制器綜合實訓平臺 8051，12MHz
日 期: 2011-8-9
*/
#include "reg52.h"
#include "intrins.h"
#define somenop {_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();}
#define u16 unsigned int
#define u8 unsigned char
#define DELAY_TIME 5
#define SlaveAddrW 0xA0
#define SlaveAddrR 0xA1
//匯流排引腳定義
sbit SDA = P2^1; /* 資料線 */
sbit SCL = P2^0; /* 時鐘線 */
void IIC_Ack(bit ackbit)
{
if(ackbit)
{
SDA = 0;
}
else
{
SDA = 1;
}
somenop;
SCL = 1;
somenop;
SCL = 0;
SDA = 1;
somenop;
}
void IIC_Delay(unsigned char i)
{
do{_nop_();}
while(i--);
}
//匯流排啟動條件
void IIC_Start(void)
{
SDA = 1;
SCL = 1;
IIC_Delay(DELAY_TIME);
SDA = 0;
IIC_Delay(DELAY_TIME);
SCL = 0;
}
//匯流排停止條件
void IIC_Stop(void)
{
SDA = 0;
SCL = 1;
IIC_Delay(DELAY_TIME);
SDA = 1;
IIC_Delay(DELAY_TIME);
}
//傳送應答
void IIC_SendAck(bit ackbit)
{
SCL = 0;
SDA = ackbit; // 0：應答，1：非應答
IIC_Delay(DELAY_TIME);
SCL = 1;
IIC_Delay(DELAY_TIME);
SCL = 0;
SDA = 1;
IIC_Delay(DELAY_TIME);
}
//等待應答
bit IIC_WaitAck(void)
{
bit ackbit;
SCL = 1;
IIC_Delay(DELAY_TIME);
ackbit = SDA;
SCL = 0;
IIC_Delay(DELAY_TIME);
return ackbit;
}
//通過I2C匯流排傳送資料
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;
}
//從I2C總線上接收資料
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;
}
void pcfwrite()
{
IIC_Start();
// IIC_WaitAck();
IIC_SendByte(0x90);
IIC_WaitAck();
IIC_SendByte(0x03);
IIC_WaitAck();
IIC_Stop();
}
u8 pcfread()
{
u8 temp;
IIC_Start();
//IIC_WaitAck();
IIC_SendByte(0x90);
IIC_WaitAck();
IIC_SendByte(0x03);
IIC_WaitAck();
IIC_Stop();
IIC_Start();
//IIC_WaitAck();
IIC_SendByte(0x91);
IIC_WaitAck();
temp = IIC_RecByte();
IIC_Stop();
return temp;
}
void AT24C02write(u8 add,u8 dat)
{
IIC_Start();
IIC_SendByte(0xa0);
IIC_WaitAck();
IIC_SendByte(add);
IIC_WaitAck();
IIC_SendByte(dat);
IIC_WaitAck();
IIC_Stop();
}
u8 AT24C02read(u8 add)
{
u8 temp;
IIC_Start();
IIC_SendByte(0xa0);
IIC_WaitAck();
IIC_SendByte(add);
IIC_WaitAck();
// IIC_Stop();
IIC_Start();
IIC_SendByte(0xa1);
IIC_WaitAck();
temp = IIC_RecByte();
// IIC_WaitAck();
IIC_Stop();
return temp;
}
//unsigned char AT24C02read(u8 add)
//{
// unsigned char d;
//
// IIC_Start();
// IIC_SendByte(0xa0); //??????
// IIC_WaitAck();
// IIC_SendByte(add); //????????
// IIC_WaitAck();
// IIC_Stop();
//
// IIC_Start();
// IIC_SendByte(0xa1); //?????
// IIC_WaitAck();
// d = IIC_RecByte(); //????
// IIC_Ack(0);
// IIC_Stop();
// return d;
//}
//void AT24C02write(u8 add,u8 dat)
//{
// EA = 0;
// IIC_Start();
// IIC_SendByte(0xa0); //??????
// IIC_WaitAck();
// IIC_SendByte(add); //??????
// IIC_WaitAck();
// IIC_SendByte(dat); //????
// IIC_WaitAck();
// IIC_Stop();
// somenop;
// EA = 1;
//}
//
iic.h
#ifndef _IIC_H
#define _IIC_H
#define u16 unsigned int
#define u8 unsigned char
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);
void pcfwrite();
u16 pcfread();
void AT24C02write(u8 add,u8 dat);
u8 AT24C02read(u8 add);
#endif