Hier is die komplette USART_Recive():
Code:
char USART_Receive(){
unsigned char c;
c = uart_getc();
if ( c & UART_NO_DATA )
{
/*
* no data available from UART
*/
}
else
{
/*
* new data available from UART
* check for Frame or Overrun error
*/
if ( c & UART_FRAME_ERROR )
{
/* Framing Error detected, i.e no stop bit detected */
uart_puts_P("UART Frame Error: ");
}
if ( c & UART_OVERRUN_ERROR )
{
/*
* Overrun, a character already present in the UART UDR register was
* not read by the interrupt handler before the next character arrived,
* one or more received characters have been dropped
*/
uart_puts_P("UART Overrun Error: ");
}
if ( c & UART_BUFFER_OVERFLOW )
{
/*
* We are not reading the receive buffer fast enough,
* one or more received character have been dropped
*/
uart_puts_P("Buffer overflow error: ");
}
/*
* send received character back
*/
return c;
}
}
Das sagt der bei wirklich allen Funktionen.
PORTC &= ~ _BV(PC2);
kompiliert aber einwandfrei.
Zitieren
Zitat von pyr0skull
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