1. Си / Говнокод #3049

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    if( pc_rbyte == 0xFA && pc_buff_ready == 0 && pc_rec_pos == 0)
	{
		pc_rec_en = 1;
		return;
	}	
	return;
}

ISR(USART0_RX_vect)
{
	cli();
	rbyte = rs485_reciv();
	
	if( COMM == 1 && rbyte != 0x42 )
		xp_rec_en = 1;
	
	if(COMM == 1 && rbyte == 0x42)
	{
		//xp_rec_pos++;
		xp_response[xp_rec_pos] = xp_xor;
		COMM = 0;
		xp_rec_en = 0;
		xp_buff_ready = xp_rec_pos;
		xp_rec_pos = 0;
		xp_rec_en = 0;
		xp_xor = 0;
	}
	
	
	if( xp_rec_en == 1 ) 
	{
		if( rbyte != xp_xor && xp_rec_pos<16 )
		{
			xp_response[xp_rec_pos] = rbyte;
			xp_xor = xp_xor^rbyte;
			xp_rec_pos++;
		}else{
			xp_buff_ready = xp_rec_pos;
			xp_rec_pos = 0;
			xp_rec_en = 0;
			xp_xor = 0;
		}
	}		
	
	if( rbyte == 0x60 )
	{
		xp_rec_en = 1;
		xp_response[0] = rbyte;
		xp_rec_pos++;
	}
	
	if( rbyte == 0x41 && my_window!=1)
		COMM = 1;		
	
	if( (bit9&0b00000010) == 0b00000010 && (rbyte&0b00011111) == myXPaddress ) 
	
		switch( (rbyte&0b01100000) )
		{
			case 0b01000000: ack = 0; if( pc_buff_ready == 1 ) my_window = 1; xp_rec_en = 0;break; // NormalInquary
			case 0b01100000: ack = 0; my_window = 0; xp_rec_en = 1;break; // CallByte
			case 0b00000000: ack = 1; my_window = 0; xp_rec_en = 0;break; // ACK!
		}
	
	rbyte = 0;
	sei();
	
	return;
}

int main(void)
{
	avr_init();
	sei();

	//PORTD &=~(1<<transmit_en);
	//pc_buff_ready = 1;
	while (1)
	{
		//if( pc_buff_ready == 1 ) //pc_buff_ready == 1 && 
		//{
			if( my_window == 1 )
			{
				cli();
				_delay_us(30);
				//PORTD |= (1<<transmit_en);
				PORTG |=_BV(PG4);	 //disable DE RS485
				PORTD |=_BV(PD5);  //enable RE RS485
				//_delay_us(5);
				for( i=0; pc_rec_pos != i; i++ )
					rs485_ransmit(pc_command[i]);
					
				while ( !( UCSR0A & (1<<UDRE0)) );
				_delay_us(160);
				PORTG &=~_BV(PG4);	 //disable DE RS485
				PORTD &=~_BV(PD5);  //enable RE RS485
				
				my_window = 0;
				clear_buff(0);
				pc_buff_ready = 0;
				pc_rec_pos = 0;

    Запостил: JovialLiX, 19 Апреля 2010

    Комментарии (2) RSS

    • ava JovialLiX 19.04.2010 15:09 # 0

      sei();
      }
      //}

      if( xp_buff_ready > 0 && pc_rec_en == 0 )
      {
      for( i=0; xp_buff_ready!=i; i++ )
      rs232_transmit(xp_response[i]);

      clear_buff(1);
      xp_buff_ready = 0;
      xp_rec_en = 0;
      my_window = 0;
      }
      if( ack == 1 )
      {
      rs232_transmit('A');
      rs232_transmit('C');
      rs232_transmit('K');
      rs232_transmit(' ');
      rs232_transmit('E');
      rs232_transmit('r');
      rs232_transmit('r');
      rs232_transmit('o');
      rs232_transmit('r');
      ack = 0;
      my_window = 0;
      xp_rec_en = 0;
      }
      };
      return 0;
      }

      void clear_buff(unsigned char buff)
      {
      if( buff == 0 )
      for( i=0; i<18; i++ )
      pc_command[i] = 0;
      if( buff == 1 )
      for( i=0; i<16; i++ )
      xp_response[i] = 0;
      return;
      }

      void avr_init(void)
      {
      // 62500 9bit 1 stop no parity
      UCSR0A=0x00;
      UCSR0B=0x9C;
      UCSR0C=0x86;
      UBRR0H=0x00;
      UBRR0L=0x0F;

      // 56000 8bit 1 stop no parity
      UCSR1A=0x00;
      UCSR1B=0x98;
      UCSR1C=0x06;
      UBRR1H=0x00;
      UBRR1L=0x11;

      DDRC = 0b00000011;
      PORTC= 0b00000000;

      DDRD = 0b00000001;
      PORTD= 0b00000000;

      DDRG = 0b00011011; //определить все ножки порта G (PG3 - DE status, PG4 - DE counter)
      PORTG = 0b11100100; //включить подтяжку резисторов

      DDRD = 0b11111000; //PD0, PD1 - SCL-SDA, PD2 -RxD1, PD3 - TxD1 PD4 - STAT/COUN, PD5 - RE STAT, PD6 - RE Coun, PD7 - testLD
      PORTD = 0b01101111; //подключить внутренние резисторы на входах, a выходы установить в "0"

      PORTG &=~_BV(PG4); //disable DE RS485
      PORTD &=~_BV(PD5); //enable RE RS485

      return;
      }
      Ответить

    • ava guest 19.04.2010 15:35 # −1

      Какой длинный у тебя С++!
      Ответить

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