initialization.h

this code is such as a test code of interfacing microcontroller with MMC card

void AVR_Initialize()
{
          PORTA=0x00;         PORTB=0x00;         PORTC=0x00;         PORTD=0x00;
          DDRA=0x00;          DDRB=0xB0;          DDRC=0x00;          DDRD=0x00;

          // USART initialization
          // Communication Parameters: 8 Data, 1 Stop, No Parity
          // USART Receiver: On
          // USART Transmitter: On
          // USART Mode: Asynchronous
          // USART Baud Rate: 9600
          UCSRA=0x00;
          UCSRB=0xD8;
          UCSRC=0x86;
          UBRRH=0x00;
          UBRRL=0x2F;

          // SPI initialization
          // SPI Type: Master
          // SPI Clock Rate: 57.600 kHz
          // SPI Clock Phase: Cycle Half
          // SPI Clock Polarity: Low
          // SPI Data Order: MSB First
          SPCR=0x53;
          SPSR=0x00;
}