water_caravr16.c

AVR单片机应用开发指南及实例,包含许多实例,挺不错

#include "iom16v.h"
#define    uchar   unsigned char
#define    uint    unsigned int
//I/O定义
#define    hw38k       7     //PD7 O  38kOUT 
#define    key0        2     //PD2     I
#define    key1        3     //PD3     I
#define    key2        2     //PB2     I
#define    cup         4     //PA4     I
#define    dis_sck     5     //PA5     O
#define    dis_cs      6     //PA6     O
#define    dis_data    7     //PA7     O

#define    mota        6     //PC6     O
#define    motb        5     //PC5     O
#define    ctra        4     //PC4     O
#define    ctrb        3     //PC3     O

#define    bell        6     //PD6     O
#define    low_loc     2     //PA2     I
#define    high_loc    3     //PA3     I
#define    temp        0     //PA0     I 

//变量  常量定义
#define        wr_device_add        0x64       //时钟器件地址写命令
#define        rd_device_add        0x65       //器件地址读命令


#define   START      0x08 
#define   RE_START   0x10 
#define   MT_SLA_ACK   0x18 
#define   MT_DATA_ACK   0x28 
#define   MR_SLA_ACK   0x40 
#define   MR_DATA_ACK   0x50 
#define   MR_DATA_NAK   0x58 



#define Start()         (TWCR=(1<<TWINT)|(1<<TWSTA)|(1<<TWEN)) 
#define Stop()          (TWCR=(1<<TWINT)|(1<<TWSTO)|(1<<TWEN)) 
#define Wait()           {while(!(TWCR&(1<<TWINT)));} 
#define TestAck()      (TWSR&0xf8) 
#define SetAck()     (TWCR|=(1<<TWEA)) 
#define SetNoAck()    (TWCR&=~(1<<TWEA)) 
#define Twi()          (TWCR=(1<<TWINT)|(1<<TWEN)) 
#define Write8Bit(x)  {TWDR=(x);TWCR=(1<<TWINT)|(1<<TWEN);}     



uchar   key0_status=0x00;         //按钮状态
uchar   key1_status=0x00;   
uchar   key2_status=0x00;

uchar   temp_value=0x00;          //温度值

uchar   data_temp,data_temp1, data_temp2;
 const  uchar   default_time[14]={'2','0','0','6','0','6','0','6','0','6','0','6','0','6'};
 uchar    now_time[12];
 uchar    now_time_hex[6];
 uchar    timer_set;
 uchar    hw_commd_h;       //红外通讯命令
 uchar    hw_commd_l;
 uchar    hw_rx_tx;
 uchar    hw_crc;
 uchar    hw_data_buffer[20];   //操作命令

///子程序
    
/*            UART初始化, 红外接口  */
void uart_init(void)
{
    UCSRB = 0xd8;   //接收发送使能和中断允许
    UBRRL = 23 ;    //9600
    UBRRH = 0x00  ; // 
    UCSRC = 0x86 ;  // 

}
/* 延时us 子程序 */
void delay_us(int time)             //us  delay
	 {     
  	  do
	  	{
	  	 
		 time--;
		}	
  	  while (time>1);
	 }	

/*延时ms子程序 ms delay */	 
void delay_ms(unsigned int time)
	 {
	  while(time!=0)
	  	  {
	  	   WDR();			
		   delay_us(500);
		   time--;
		  }
         }


//iic 初始化
void  iic_init(void)
      {
      TWSR=00;
      TWBR=0x16;     //50K
      }
//I/O口方向初始化
void  io_init(void)
      {
    DDRA=0xe0;  
    DDRB=0x00;                   
    DDRC=0x79;
    DDRD=0xc2;
      }


   

//红外
void USART0_Transmit( unsigned char data )
{
/* 等待发送缓冲器为空*/
      
    
                     do
                     {
                     WDR();	
                     }
                   while ( !( UCSRA & (1<<UDRE)) );



/* 将数据放入缓冲器，发送数据*/
UDR = data;
}

//关闭看门狗
void WDT_off(void)
{
/* 置位WDCE 和WDE */
WDTCR = (1<<WDCE) | (1<<WDE);
/* 关闭WDT */
WDTCR = 0x00;
}

/****************************************** 
               I2C总线写一个字节 
             返回0:写成功 
            返回非0:写失败 
*******************************************/ 
unsigned char i2c_Write(unsigned char Wdata,unsigned int RomAddress)  
{ 
  
     Start();//I2C启动 
     Wait(); 
     if(TestAck()!=START) return 1;//ACK 
     Write8Bit(wr_device_add);//写I2C从器件地址和写方式 
     Wait(); 
     if(TestAck()!=MT_SLA_ACK) return 1;//ACK 
      
     Write8Bit(RomAddress);//写地址 
     Wait(); 
     if(TestAck()!=MT_DATA_ACK) return 1;//ACK 
      
     Write8Bit(Wdata);//写数据
     Wait(); 
     if(TestAck()!=MT_DATA_ACK) return 1;//ACK    
      
     Stop();//I2C停止 
     WDR();
     delay_ms(10);//延时等待
     return 0; 
} 
/****************************************** 
               I2C总线读一个字节 
            如果读失败也返回0 
*******************************************/ 
unsigned char i2c_Read(unsigned int RomAddress)  
{ 
      unsigned char temp; 
  
      Start();//I2C启动 
      Wait(); 
      if (TestAck()!=START) return 0;//ACK       
      Write8Bit(wr_device_add);//写I2C从器件地址和写方式 
      Wait();  
      if (TestAck()!=MT_SLA_ACK) return 0;//ACK 
       
     // P--; 
      Write8Bit(RomAddress);//写地址 
      Wait(); 
      if (TestAck()!=MT_DATA_ACK) return 0; 
       
  
      Start();//I2C重新启动 
      Wait(); 
      if (TestAck()!=RE_START)  return 0; 
      Write8Bit(rd_device_add);//写I2C从器件地址和读方式 
      Wait(); 
      if(TestAck()!=MR_SLA_ACK)  return 0;//ACK 
      Twi();//启动主I2C读方式 
      Wait(); 
      if(TestAck()!=MR_DATA_NAK) return 0;//ACK    
       
      temp=TWDR;//读取I2C接收数据 
       Stop();//I2C停止 
       WDR();
      return temp; 
} 

//外部中断0服务程序,开关控制部分
         #pragma interrupt_handler EXT_INT0_ISR: iv_INT0  
           void EXT_INT0_ISR (void)    //INT0 中断
{
 uchar   temp;
 temp=SREG;
 delay_ms(10);
 if(key0_status==0x00)
 {
 portc &=~(1<<mota); 
 portc |=(1<<motb);
 portc |=(1<<ctra); 
 key0_status=0x11;
 }
 else
 {
 portc &=~(1<<motb); 
 portc |=(1<<mota);
 portc &=~(1<<ctra);
 key0_status=0x00; 	
 }
 SREG=temp;

}
//外部中断1服务程序,设置响应
         #pragma interrupt_handler EXT_INT1_ISR: iv_INT1  
           void EXT_INT1_ISR (void)    //INT1 中断
{
 uchar   temp;
 temp=SREG;
 set_sub();
 SREG=temp;

}

//外部中断2服务程序,模式响应
         #pragma interrupt_handler EXT_INT2_ISR: iv_INT2  
           void EXT_INT2_ISR (void)    //INT2 中断
{
 uchar   temp;
 temp=SREG;
 if(key2_status==0x00)
 {
 portc &=~(1<<ctrb);
 key2_status=0x11;
 }
 else
 {
 portc |=(1<<ctrb);
 key2_status=0x00;
 }
 SREG=temp;

}

//测试,定时器2中断，用于产生38K的红外载波信号(用PWM更精确)
#pragma interrupt_handler timer2_ovf_isr:iv_TIMER2_OVF          
void timer2_ovf_isr(void)    //us定时中断
{
  PORTD ^= (1<<hw38k);
}
//主程序
void  main(void)
 {
    uchar i, j;
    io_init();
    uart_init();
    twi_init();
    MCUCR=0x0f;                      //INT0 ,INT1 上升沿
    GICR =0xe0;                      //INT0,INT1,INT2  中断使能
    MCUCSR=0x40;                     //INT2
    ADMUX=0x40;                      //ADC 控制(水温)
    
    TCNT2 = 0x96;        //计数初值
    TIFR |= (1<<TOV2) ;  //TOV2  clr 
    TCCR2 = 0x01 ;       //    
    TIMSK = 0x40;
    
    SREG=0x80;                       //INT allow
     //
     EEPROM_read(0x10);     //读出时钟设置状态
     while(timer_set)  //等待时钟设置
                   {
                   for(i=0;i<5;i++)
                   {
                   portd |=(1<<bell);   //蜂鸣提醒设置
                   delay_ms(800);
                   portd &=~(1<<bell); 
                   delay_ms(200);
                   //
                   }
                   wait_time_set();
                   }
   while(1)
    {
     if(UCSRA & (1<<RXC))
       {
       	j=UDR;
       comm_deal();
       }
     else
      {
      }
      //
    switch(mode_bit)
      {
       case  0:     add_water();             //上水
                    break;
       case  1:     heat_control();          //加热        
                    break;
                    
       case  2:     cold_control();          //制冷
                    break;
       case  3:     get_control();           //接水
                    break;
       case  4:	    out_control();           //排水
                    break;
                    
       default:     portc &=~(1<<motb); 
                    portc |=(1<<mota);
                    portc &=~(1<<ctra);
                    key0_status=0x00; 
                    break;	
      }	
    }    
    
}