مشکل در TWI

lordsoroosh

تاریخ عضویت: ۱۳۸۹/۰۸/۱۷
پست: 299
تشکر: 3

۰۶:۳۸ ۱۳۹۴/۰۷/۱۴

سلام دوستان.
من میخوام بین دوتا میکرو از طریق TWI به شکل multimaster ازتباط برقرار کنم.
ولی متاسفانه به مشکل خوردم . وقتی از یه سمت دارم دیتا برای اون یکی میفرستم همه چیز خوب پیش میره ولی وقتی بعدش از اونیکی سمت به این یکی دیتا بفرستم همه چیز خراب میشه . انگار اصلا باس TWI قفل میشه .
تا فردا باید تمومش کنم :angry: :cry2: :cry2: :cry2:
لطفا کمکم کنید
ممنون
البته خیلی به این کد کازی نداشته باشید . در کل باید چجوری با TWI روش multimaster پیاده کنم

اینم کدم:

کد:

/*****************************************************
This program was produced by the
CodeWizardAVR V2.05.0 Advanced
Automatic Program Generator
© Copyright 1998-2010 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com

Project : 
Version : 
Date  : 9/9/2015
Author : www.Eca.ir *** www.Webkade.ir
Company : 
Comments: 


Chip type        : ATmega8
Program type      : Application
AVR Core Clock frequency: 8.000000 MHz
Memory model      : Small
External RAM size    : 0
Data Stack size     : 256
*****************************************************/

#include &lt;mega8.h&gt;
#include &lt;delay.h&gt;

#define TP2 PINB.0
#define TP1 PINB.1
#define BUZZER PORTB.7
#define PAIRING PIND.3
#define RSTAT PORTD.6
#define GSTAT PORTD.7
#define BSTAT PORTD.5
#define SEG7A PORTD.4
#define SEG7B PORTD.1
#define SEG7DP PORTC.3 //SEG7C
#define SEG7D PORTC.2
#define SEG7E PORTC.1
#define SEG7G PORTB.6 //SEG7F
#define SEG7F PORTC.0 //SEG7G
#define SEG7C PORTD.0 //SEG7DP

#define TWIE 0
#define TWEN 2
#define TWSTA 5
#define TWINT 7
#define TWSTO 4
#define TWEA 6

#define START 		   0x08 
#define Repeated_START 	 0x10
// Master Transmitter
#define MT_SLA_ACK    0x18
#define MT_SLA_NACK   0x20
#define MT_DATA_ACK   0x28
#define MT_DATA_NACK   0x30
#define MT_ARB_LOST   0x38


// Master Receiver
#define MR_ARB_LOST   0x38
#define MR_SLA_ACK    0x40
#define MR_SLA_NACK   0x48
#define MR_DATA_ACK   0x50
#define MR_DATA_NACK   0x58

 // Slave Transmitter
#define ST_SLA_ACK        0xA8
#define ST_ARB_LOST_SLA_ACK   0xB0
#define ST_DATA_ACK       0xB8
#define ST_DATA_NACK       0xC0
#define ST_LAST_DATA       0xC8

 // Slave Receiver
#define REP_START        0x10      
#define SLA_R          0xC9     
#define SR_SLA_ACK        0x60
#define SR_ARB_LOST_SLA_ACK   0x68
#define SR_GCALL_ACK       0x70
#define SR_ARB_LOST_GCALL_ACK  0x78
#define SR_DATA_ACK       0x80
#define SR_DATA_NACK       0x88
#define SR_GCALL_DATA_ACK    0x90
#define SR_GCALL_DATA_NACK    0x98
#define SR_STOP         0xA0

#define GlobalAddress  0

//Slave addresses
#define LIGHTER   2
#define TEMP    3
#define MIC     4
#define MOTOR    5
#define FAN     6


unsigned char MR_TWI(unsigned char);
void MT_TWI(unsigned char,unsigned char); 
char pairing_table[5];
char click_counter;
char command;
int i;
int timer_counter;

// External Interrupt 1 service routine
interrupt [EXT_INT1] void ext_int1_isr(void)
{
// Place your code here
if(click_counter==0)
  {    	 
  click_counter++; 
  }
else if(click_counter==1)
  {
  click_counter=0;
  } 
}

// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
// Place your code here

}

// Two Wire bus interrupt service routine
interrupt [TWI] void twi_isr(void)
{
// Place your code here
unsigned char status;
status = TWSR &amp; 0xF8;     
switch(status)
  {                 
  case SR_GCALL_DATA_ACK:           
    break;
  case SR_GCALL_DATA_NACK:     
    break;   
  case SR_DATA_ACK:  
    break;         
  case ST_SLA_ACK: 
  break;      
  } 
TWCR|=(1&lt;&lt;TWINT);
}

// Declare your global variables here

void main(void)
{
// Declare your local variables here

// Input/Output Ports initialization
// Port B initialization
// Func7=Out Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=0 State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTB=0x00;
DDRB=0x80;
DDRB.6=1;
DDRB.2=1;


// Port C initialization
// Func6=In Func5=In Func4=In Func3=Out Func2=Out Func1=Out Func0=Out 
// State6=T State5=T State4=T State3=0 State2=0 State1=0 State0=0 
PORTC=0x00;
DDRC=0x0F;

// Port D initialization
// Func7=Out Func6=Out Func5=Out Func4=Out Func3=In Func2=In Func1=Out Func0=Out 
// State7=0 State6=0 State5=0 State4=0 State3=T State2=T State1=0 State0=0 
PORTD=0x00;
DDRD=0xF3;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: 7.813 kHz
TCCR0=0x05;
TCNT0=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: 1000.000 kHz
// Mode: Ph. &amp; fr. cor. PWM top=ICR1
// OC1A output: Discon.
// OC1B output: Non-Inv.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x20;
TCCR1B=0x12;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=2;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer2 Stopped
// Mode: Normal top=0xFF
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: On
// INT1 Mode: Any change
GICR|=0x80;
MCUCR=0x04;
GIFR=0x80;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x01;

// USART initialization
// USART disabled
UCSRB=0x00;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;

// ADC initialization
// ADC disabled
ADCSRA=0x00;

// SPI initialization
// SPI disabled
SPCR=0x00;

// TWI initialization
// Bit Rate: 100.000 kHz
TWBR=0x20;
// Two Wire Bus Slave Address: 1
// General Call Recognition: Off
TWAR=0x02;
// Generate Acknowledge Pulse: On
// TWI Interrupt: On
TWCR=0x45;
TWSR=0x00;

RSTAT=1;
GSTAT=1;
BSTAT=1;
SEG7A=1;
SEG7B=1;
SEG7C=1;
SEG7D=1;
SEG7E=1;
SEG7F=1;
SEG7G=1;
SEG7DP=1;
OCR1BL=2;
for(i=0;i&lt;256;i=i+10) 
    {
    ICR1L=i;
    delay_ms(100);
    } 
OCR1BL=0;

// Global enable interrupts
#asm(&quot;sei&quot;)
      
while (1)
   { 
   timer_counter++;
if(timer_counter==1)
  {
  if(command==0)
    {
    GSTAT=0;
    delay_ms(1);
    GSTAT=1; 
    }
  else if(command==1)
    {
    RSTAT=0;
    delay_ms(1);
    RSTAT=1;
    } 
              
  TWCR = (1&lt;&lt;TWINT)| (1&lt;&lt;TWEN)| (1&lt;&lt;TWSTA);  	 	
	while(!(TWCR &amp; (1&lt;&lt;TWINT)));   
	RSTAT=0;  
 	if ((TWSR &amp; 0xF8) == START || (TWSR &amp; 0xF8) == Repeated_START )
    { 
    							  	 										  	 
		TWDR = (3 &lt;&lt; 1) | 0x01;            	
		TWCR = (1&lt;&lt;TWINT) | (1&lt;&lt;TWEN);		 
		while (!(TWCR &amp; (1&lt;&lt;TWINT))); 		
 	  }                			
 	 	  	
 	if((TWSR &amp; 0xF8) == MR_SLA_ACK) 
    {   	
  	TWCR = (1&lt;&lt;TWINT)| (1&lt;&lt;TWEN)| (1&lt;&lt;TWEA);  	
    while (!(TWCR &amp; (1&lt;&lt;TWINT)));    
		command=TWDR;	
		TWCR = (1&lt;&lt;TWINT)| (1&lt;&lt;TWEN);  
		while (!(TWCR &amp; (1&lt;&lt;TWINT)));	 			   
 	  }	          
 	TWCR = (1&lt;&lt;TWINT) | (1&lt;&lt;TWEN) | (1&lt;&lt;TWSTO);
  timer_counter=0;
  }
   }
}

//-----------------------------------
unsigned	char MR_TWI(unsigned char address_device) 
{
	unsigned char  get_data; 
	
	TWCR = (1&lt;&lt;TWINT)| (1&lt;&lt;TWEN)| (1&lt;&lt;TWSTA);  	 	
	while(!(TWCR &amp; (1&lt;&lt;TWINT)));   
	 
 	if ((TWSR &amp; 0xF8) == START || (TWSR &amp; 0xF8) == Repeated_START ){ 							  	 										  	 
		TWDR = (address_device &lt;&lt; 1) | 0x01;            	
		TWCR = (1&lt;&lt;TWINT) | (1&lt;&lt;TWEN);		 
		while (!(TWCR &amp; (1&lt;&lt;TWINT))); 		
 	}                			
 	 	 	 	
 	if((TWSR &amp; 0xF8) == MR_SLA_ACK) {   	
  	TWCR = (1&lt;&lt;TWINT)| (1&lt;&lt;TWEN)| (1&lt;&lt;TWEA);  	
   while (!(TWCR &amp; (1&lt;&lt;TWINT)));    
		get_data=TWDR;	
		TWCR = (1&lt;&lt;TWINT)| (1&lt;&lt;TWEN);  
		while (!(TWCR &amp; (1&lt;&lt;TWINT)));	 			   
 	}	          
 	TWCR = (1&lt;&lt;TWINT) | (1&lt;&lt;TWEN) | (1&lt;&lt;TWSTO); 	 	  	
	return get_data;
	   				
} 
//----------------------------------
void MT_TWI(unsigned char data,unsigned char address_device)
{                    	
	TWCR = (1&lt;&lt;TWINT)|(1&lt;&lt;TWEN)| (1&lt;&lt;TWSTA) ;  
 	while(!(TWCR &amp; (1&lt;&lt;TWINT)));    
 	
  if ((TWSR &amp; 0xF8) == START || (TWSR &amp; 0xF8) == Repeated_START ){	
		TWDR = (address_device &lt;&lt; 1) &amp; 0xFE;            		
	  TWCR = (1&lt;&lt;TWINT) | (1&lt;&lt;TWEN);		 	  
		while (!(TWCR &amp; (1&lt;&lt;TWINT)));	 		   		
  }     		 
 	if ((TWSR &amp; 0xF8) == MT_SLA_ACK ){   	  
 		TWDR =data;    		      
	  TWCR = (1&lt;&lt;TWINT) | (1&lt;&lt;TWEN);		 
		while (!(TWCR &amp; (1&lt;&lt;TWINT)));  			   		
  }    		   		  	
  TWCR = (1&lt;&lt;TWINT) | (1&lt;&lt;TWEN) | (1&lt;&lt;TWSTO); 	 				
}

چيزي را بگو که بتواني بنويسي
چيزي را بنويس که بتواني امضا کني
چيزي را امضا کن که بتواني به آن عمل کني (ناپلئون)

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اطلاعیه

مشکل در TWI

مشکل در TWI