Re: [avr-gcc-list] AVR Macro Reference

[df_welch]

John,
   You will find these terms in the Device Datasheet    
On 3/30/2012 2:46 PM, John Krautkramer wrote:
> Hi,
>
> Studying the WinAVR & AVR Libc docs, I come across many references like:
>
> #define UDR     UDR0
> #define UCSRA   UCSR0A
> #define UCSRB   UCSR0B
> #define FE      FE0
> #define TXEN    TXEN0
> #define RXEN    RXEN0
> #define RXCIE   RXCIE0
> #define UDRE    UDRE0
> #define U2X     U2X0
> #define UBRRL   UBRR0L
>
>    ADCSRA &= ~_BV(ADIE);/* disable ADC interrupt */
>    UCSRA = _BV(U2X);             /* improve baud rate error by using 2x
> clk */
>    UBRRL = (F_CPU / (16UL * UART_BAUD)) - 1;
>    SET(DDR, HD44780_RS);
>    ASSIGN(DDR, HD44780_D4, 0x0F);
>
> Where do I find a reference for what all these "constants" mean and how
> to use them?
>
> Thanks in advance for the direction! I'm obviously new to this.
>
>
>
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