Re: [avr-gcc-list] Help setting up USART on ATmega32 in C

[Helix]

> Any ideas?

I use this code with my __AVR_AT90S8515__
HTH


/* Run the UART at 9600 baud  */
// XTAL=7.3728 Baud=9600 UBRR=47
#define BAUD9600  47 /* @4MHz internal RC-osc. */

/* Initialize UART */
void InitUART( unsigned char baudrate )
{
 UBRR = baudrate;                  /* Set the baud rate */
 UCR = ( (1<<RXEN) | (1<<TXEN) );  /* Enable UART receiver and transmitter
*/
}

/* Read and write functions */
unsigned char ReceiveByte( void )
{
 while ( !(USR & (1<<RXC)) )  /* Wait for incomming data */
  ;                   /* Return the data */
 return UDR;
}

void TransmitByte( unsigned char data )
{
 while ( !(USR & (1<<UDRE)) )
  ;                    /* Wait for empty transmit buffer */
 UDR = data;            /* Start transmittion */
}


int main()
{
 InitUART( BAUD9600 ) ;

 while (1) {
  // primitive test of 'uart_putchar'
  TransmitByte('H');
  TransmitByte('e');
  TransmitByte('l');
  TransmitByte('l');
  TransmitByte('o');
  TransmitByte('\r');
  TransmitByte('\n');
 }

 return 0;
}