从 AtMega328 迁移到 AtMega644p

Question

我有一个机器人，它使用 AtMega 328/L 40pin，直到最近我需要更多资源，所以我改用了 Atmega 644p。

两者之间的寄存器和位名称不同，说实话，我无法让新寄存器正常工作。我确信我已经遵循了数据表中所述的更改，但我觉得我缺乏知识阻碍了这一点。

这是确实有效的 328 函数：

{
portInit();     // Setup port directions and initial values.
                // This is the most important step!

cli();          // Disable global interrupts.

// UART:
UBRRH = UBRR_BAUD_LOW >> 8; // Setup UART: Baud is Low Speed
UBRRL = (uint8_t) UBRR_BAUD_LOW;
UCSRA = 0x00;
     UCSRC = (1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);
     UCSRB = (1 << TXEN) | (1 << RXEN) | (1 << RXCIE);

// Initialize ADC:
ADMUX = 0; //external reference 
ADCSRA = (0<<ADIE) | (0<<ADEN) | (1<<ADPS2) | (1<<ADPS1) | (1<<ADIF);
SFIOR = 0;

// Initialize External interrupts - all disabled:
MCUCR = (1 << ISC11) | (1 << ISC10) | (1 << ISC01) | (1 << ISC00);
GICR = (0 << INT2) | (0 << INT1) | (0 << INT0);
MCUCSR = (0 << ISC2);


// 10kHz Timer 0:
TCCR0 =   (0 << WGM00) 
        | (1 << WGM01) 
        | (0 << COM00) 
        | (0 << COM01) 
        | (0 << CS02)  
        | (1 << CS01) 
        | (0 << CS00);
OCR0  = 199;


//Timer 1 is free for your application!


// Timer 2 - used for beeper:
TCCR2 =  0; 
OCR2  = 0xFF; 

// Enable timer interrupts:
TIMSK =   (1 << OCIE0); 

sei(); // Enable Global Interrupts
}

这是我正在尝试工作的代码：

{
portInit();     // Setup port directions and initial values.
                // This is the most important step!


cli();          // Disable global interrupts.


     // UART:
//UBRRH = UBRR_BAUD_LOW >> 8;   // Setup UART: Baud is Low Speed
//UBRR0L = (uint8_t) UBRR_BAUD_LOW;
//UCSR0A = 0x00;
     //UCSR0C = ((1<<UCSZ00));
     //UCSR0B = (1 << TXEN0) | (1 << RXEN0) | (1 << RXCIE0);

// Initialize ADC:
ADMUX = 0; //external reference 
ADCSRA = (0<<ADIE) | (0<<ADEN) | (1<<ADPS2) | (1<<ADPS1) | (1<<ADIF);
ADCSRB = 0;

// Initialize External interrupts - all disabled:
//MCUCR 
SMCR = (1 << ISC11) | (1 << ISC10) | (1 << ISC01) | (1 << ISC00);
EIMSK = (0 << INT2) | (0 << INT1) | (0 << INT0);
MCUSR = (0 << ISC20);


// 10kHz Timer 0:
TCCR0A =   (0 << WGM00) 
        | (1 << WGM01) 
        | (0 << COM0A0) 
        | (0 << COM0A1);

TCCR0B = (0 << CS02)  
        | (1 << CS01) 
        | (0 << CS00);
OCR0A  = 199;
/*
Timer 1 is free for your application!
*/

// Timer 2 - used for beeper:
TCCR2A =  0; 
OCR2A  = 0xFF; 

// Enable timer interrupts:
TIMSK0 =   (1 << OCIE0A); 

sei(); // Enable Global Interrupts
}

我以前从未使用过这些代码，所以我正在尽力而为。

我在这里做错了什么明显的事情吗？

亲切的问候 李