استفاده از وقفه سریال
1-برای اینکه از وقفه پورت سریال استفاده کنم ( جهت دریافت پیامک با sim900) ، باید پایه INT0 در میکرو را به RX وصل کنم ؟
2- برای فعال کردنش ، همین که در قسمت usart setting ، گزینه rx interrupt & tx interrupt را فعال کنم کافیه ؟ یا گزینه دیگری هم نیاز به فعال سازی دارد ؟
3- کد تولید شده با کدویزاد با فعال کردن rx interrupt & tx interrupt به این صورت هست ، حالا باید دستورات را کجای کد وارد کنم ؟ یعنی فرمان های وقفه باید کجا ی این کد قرار بگیرن ؟
کد:#include <mega32a.h> // Alphanumeric LCD functions #include <alcd.h> // Declare your global variables here #define DATA_REGISTER_EMPTY (1<<UDRE) #define RX_COMPLETE (1<<RXC) #define FRAMING_ERROR (1<<FE) #define PARITY_ERROR (1<<UPE) #define DATA_OVERRUN (1<<DOR) // USART Receiver buffer #define RX_BUFFER_SIZE 8 char rx_buffer[RX_BUFFER_SIZE]; #if RX_BUFFER_SIZE <= 256 unsigned char rx_wr_index=0,rx_rd_index=0; #else unsigned int rx_wr_index=0,rx_rd_index=0; #endif #if RX_BUFFER_SIZE < 256 unsigned char rx_counter=0; #else unsigned int rx_counter=0; #endif // This flag is set on USART Receiver buffer overflow bit rx_buffer_overflow; // USART Receiver interrupt service routine interrupt [USART_RXC] void usart_rx_isr(void) { char status,data; status=UCSRA; data=UDR; if ((status & (FRAMING_ERROR | PARITY_ERROR | DATA_OVERRUN))==0) { rx_buffer[rx_wr_index++]=data; #if RX_BUFFER_SIZE == 256 // special case for receiver buffer size=256 if (++rx_counter == 0) rx_buffer_overflow=1; #else if (rx_wr_index == RX_BUFFER_SIZE) rx_wr_index=0; if (++rx_counter == RX_BUFFER_SIZE) { rx_counter=0; rx_buffer_overflow=1; } #endif } } #ifndef _DEBUG_TERMINAL_IO_ // Get a character from the USART Receiver buffer #define _ALTERNATE_GETCHAR_ #pragma used+ char getchar(void) { char data; while (rx_counter==0); data=rx_buffer[rx_rd_index++]; #if RX_BUFFER_SIZE != 256 if (rx_rd_index == RX_BUFFER_SIZE) rx_rd_index=0; #endif #asm("cli") --rx_counter; #asm("sei") return data; } #pragma used- #endif // USART Transmitter buffer #define TX_BUFFER_SIZE 8 char tx_buffer[TX_BUFFER_SIZE]; #if TX_BUFFER_SIZE <= 256 unsigned char tx_wr_index=0,tx_rd_index=0; #else unsigned int tx_wr_index=0,tx_rd_index=0; #endif #if TX_BUFFER_SIZE < 256 unsigned char tx_counter=0; #else unsigned int tx_counter=0; #endif // USART Transmitter interrupt service routine interrupt [USART_TXC] void usart_tx_isr(void) { if (tx_counter) { --tx_counter; UDR=tx_buffer[tx_rd_index++]; #if TX_BUFFER_SIZE != 256 if (tx_rd_index == TX_BUFFER_SIZE) tx_rd_index=0; #endif } } #ifndef _DEBUG_TERMINAL_IO_ // Write a character to the USART Transmitter buffer #define _ALTERNATE_PUTCHAR_ #pragma used+ void putchar(char c) { while (tx_counter == TX_BUFFER_SIZE); #asm("cli") if (tx_counter || ((UCSRA & DATA_REGISTER_EMPTY)==0)) { tx_buffer[tx_wr_index++]=c; #if TX_BUFFER_SIZE != 256 if (tx_wr_index == TX_BUFFER_SIZE) tx_wr_index=0; #endif ++tx_counter; } else UDR=c; #asm("sei") } #pragma used- #endif // Standard Input/Output functions #include <stdio.h> void main(void) { // Declare your local variables here // Input/Output Ports initialization // Port A initialization // Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In DDRA=(0<<DDA7) | (0<<DDA6) | (0<<DDA5) | (0<<DDA4) | (0<<DDA3) | (0<<DDA2) | (0<<DDA1) | (0<<DDA0); // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T PORTA=(0<<PORTA7) | (0<<PORTA6) | (0<<PORTA5) | (0<<PORTA4) | (0<<PORTA3) | (0<<PORTA2) | (0<<PORTA1) | (0<<PORTA0); // Port B initialization // Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In DDRB=(0<<DDB7) | (0<<DDB6) | (0<<DDB5) | (0<<DDB4) | (0<<DDB3) | (0<<DDB2) | (0<<DDB1) | (0<<DDB0); // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T PORTB=(0<<PORTB7) | (0<<PORTB6) | (0<<PORTB5) | (0<<PORTB4) | (0<<PORTB3) | (0<<PORTB2) | (0<<PORTB1) | (0<<PORTB0); // Port C initialization // Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In DDRC=(0<<DDC7) | (0<<DDC6) | (0<<DDC5) | (0<<DDC4) | (0<<DDC3) | (0<<DDC2) | (0<<DDC1) | (0<<DDC0); // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T PORTC=(0<<PORTC7) | (0<<PORTC6) | (0<<PORTC5) | (0<<PORTC4) | (0<<PORTC3) | (0<<PORTC2) | (0<<PORTC1) | (0<<PORTC0); // Port D initialization // Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In DDRD=(0<<DDD7) | (0<<DDD6) | (0<<DDD5) | (0<<DDD4) | (0<<DDD3) | (0<<DDD2) | (0<<DDD1) | (0<<DDD0); // State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T PORTD=(0<<PORTD7) | (0<<PORTD6) | (0<<PORTD5) | (0<<PORTD4) | (0<<PORTD3) | (0<<PORTD2) | (0<<PORTD1) | (0<<PORTD0); // Timer/Counter 0 initialization // Clock source: System Clock // Clock value: Timer 0 Stopped // Mode: Normal top=0xFF // OC0 output: Disconnected TCCR0=(0<<WGM00) | (0<<COM01) | (0<<COM00) | (0<<WGM01) | (0<<CS02) | (0<<CS01) | (0<<CS00); TCNT0=0x00; OCR0=0x00; // Timer/Counter 1 initialization // Clock source: System Clock // Clock value: Timer1 Stopped // Mode: Normal top=0xFFFF // OC1A output: Disconnected // OC1B output: Disconnected // 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=(0<<COM1A1) | (0<<COM1A0) | (0<<COM1B1) | (0<<COM1B0) | (0<<WGM11) | (0<<WGM10); TCCR1B=(0<<ICNC1) | (0<<ICES1) | (0<<WGM13) | (0<<WGM12) | (0<<CS12) | (0<<CS11) | (0<<CS10); TCNT1H=0x00; TCNT1L=0x00; ICR1H=0x00; ICR1L=0x00; OCR1AH=0x00; OCR1AL=0x00; OCR1BH=0x00; OCR1BL=0x00; // Timer/Counter 2 initialization // Clock source: System Clock // Clock value: Timer2 Stopped // Mode: Normal top=0xFF // OC2 output: Disconnected ASSR=0<<AS2; TCCR2=(0<<PWM2) | (0<<COM21) | (0<<COM20) | (0<<CTC2) | (0<<CS22) | (0<<CS21) | (0<<CS20); TCNT2=0x00; OCR2=0x00; // Timer(s)/Counter(s) Interrupt(s) initialization TIMSK=(0<<OCIE2) | (0<<TOIE2) | (0<<TICIE1) | (0<<OCIE1A) | (0<<OCIE1B) | (0<<TOIE1) | (0<<OCIE0) | (0<<TOIE0); // External Interrupt(s) initialization // INT0: Off // INT1: Off // INT2: Off MCUCR=(0<<ISC11) | (0<<ISC10) | (0<<ISC01) | (0<<ISC00); MCUCSR=(0<<ISC2); // USART initialization // Communication Parameters: 8 Data, 1 Stop, No Parity // USART Receiver: On // USART Transmitter: On // USART Mode: Asynchronous // USART Baud Rate: 9600 UCSRA=(0<<RXC) | (0<<TXC) | (0<<UDRE) | (0<<FE) | (0<<DOR) | (0<<UPE) | (0<<U2X) | (0<<MPCM); UCSRB=(1<<RXCIE) | (1<<TXCIE) | (0<<UDRIE) | (1<<RXEN) | (1<<TXEN) | (0<<UCSZ2) | (0<<RXB8) | (0<<TXB8); UCSRC=(1<<URSEL) | (0<<UMSEL) | (0<<UPM1) | (0<<UPM0) | (0<<USBS) | (1<<UCSZ1) | (1<<UCSZ0) | (0<<UCPOL); UBRRH=0x00; UBRRL=0x47; // Analog Comparator initialization // Analog Comparator: Off // The Analog Comparator's positive input is // connected to the AIN0 pin // The Analog Comparator's negative input is // connected to the AIN1 pin ACSR=(1<<ACD) | (0<<ACBG) | (0<<ACO) | (0<<ACI) | (0<<ACIE) | (0<<ACIC) | (0<<ACIS1) | (0<<ACIS0); SFIOR=(0<<ACME); // ADC initialization // ADC disabled ADCSRA=(0<<ADEN) | (0<<ADSC) | (0<<ADATE) | (0<<ADIF) | (0<<ADIE) | (0<<ADPS2) | (0<<ADPS1) | (0<<ADPS0); // SPI initialization // SPI disabled SPCR=(0<<SPIE) | (0<<SPE) | (0<<DORD) | (0<<MSTR) | (0<<CPOL) | (0<<CPHA) | (0<<SPR1) | (0<<SPR0); // TWI initialization // TWI disabled TWCR=(0<<TWEA) | (0<<TWSTA) | (0<<TWSTO) | (0<<TWEN) | (0<<TWIE); // Alphanumeric LCD initialization // Connections are specified in the // Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu: // RS - PORTB Bit 0 // RD - PORTB Bit 1 // EN - PORTB Bit 2 // D4 - PORTB Bit 4 // D5 - PORTB Bit 5 // D6 - PORTB Bit 6 // D7 - PORTB Bit 7 // Characters/line: 16 lcd_init(16); // Global enable interrupts #asm("sei") while (1) { // Place your code here } }
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