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:
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 <mega8.h> #include <delay.h> #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 & 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<<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. & 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<256;i=i+10) { ICR1L=i; delay_ms(100); } OCR1BL=0; // Global enable interrupts #asm("sei") 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<<TWINT)| (1<<TWEN)| (1<<TWSTA); while(!(TWCR & (1<<TWINT))); RSTAT=0; if ((TWSR & 0xF8) == START || (TWSR & 0xF8) == Repeated_START ) { TWDR = (3 << 1) | 0x01; TWCR = (1<<TWINT) | (1<<TWEN); while (!(TWCR & (1<<TWINT))); } if((TWSR & 0xF8) == MR_SLA_ACK) { TWCR = (1<<TWINT)| (1<<TWEN)| (1<<TWEA); while (!(TWCR & (1<<TWINT))); command=TWDR; TWCR = (1<<TWINT)| (1<<TWEN); while (!(TWCR & (1<<TWINT))); } TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); timer_counter=0; } } } //----------------------------------- unsigned char MR_TWI(unsigned char address_device) { unsigned char get_data; TWCR = (1<<TWINT)| (1<<TWEN)| (1<<TWSTA); while(!(TWCR & (1<<TWINT))); if ((TWSR & 0xF8) == START || (TWSR & 0xF8) == Repeated_START ){ TWDR = (address_device << 1) | 0x01; TWCR = (1<<TWINT) | (1<<TWEN); while (!(TWCR & (1<<TWINT))); } if((TWSR & 0xF8) == MR_SLA_ACK) { TWCR = (1<<TWINT)| (1<<TWEN)| (1<<TWEA); while (!(TWCR & (1<<TWINT))); get_data=TWDR; TWCR = (1<<TWINT)| (1<<TWEN); while (!(TWCR & (1<<TWINT))); } TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); return get_data; } //---------------------------------- void MT_TWI(unsigned char data,unsigned char address_device) { TWCR = (1<<TWINT)|(1<<TWEN)| (1<<TWSTA) ; while(!(TWCR & (1<<TWINT))); if ((TWSR & 0xF8) == START || (TWSR & 0xF8) == Repeated_START ){ TWDR = (address_device << 1) & 0xFE; TWCR = (1<<TWINT) | (1<<TWEN); while (!(TWCR & (1<<TWINT))); } if ((TWSR & 0xF8) == MT_SLA_ACK ){ TWDR =data; TWCR = (1<<TWINT) | (1<<TWEN); while (!(TWCR & (1<<TWINT))); } TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); }