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[avr-chat] help wanted programming usart0 atmega162


From: jcmh82
Subject: [avr-chat] help wanted programming usart0 atmega162
Date: Wed, 31 May 2006 04:26:54 -0700 (PDT)

Hello, im having big big problems programming usart0 of atmega162. Below is
the code of my program. im using stk500. 

please could you tell me how can i make it works?

tell me also if its possible the configuration of fuse and lock bits to
compare with the one i have.

when i turn on the microcontroller (programmed) conected to the
hyperterminal i doesnt anything.

i want 9600bauds, no parity, 8 bits and 1 stop bit.

believe me im dont know what to do because with atmega16 it worked well. 

i dont know what im doing wrong but i hope you do. Some part in the code are
in spanish, my mother tongue.



thakns you very very much.





#include <avr/io.h>

// PROTOTIPOS DE FUNCIONES UTILIZADAS

void serial_init_0 (void);

unsigned char serial_recv_0 (void);

void serial_send_0 (unsigned char);

void serial_print_0 (const char *);


/* Inicia el puerto de la UART0 */
void serial_init_0(void) {

#define BAUD 3686000/16/9600-1
  
  UBRR0L = 23;//ESTO SE SACA DEL DATASHEET
 //ACTIVAR ENVIO Y RECEPCION
        UCSR0B = (1<<TXEN0)|(1<<RXEN0);
        //TIPO DE FRAME
        UCSR0C = (1<<URSEL0)|(1<<USBS0)|(3<<UCSZ00);
  return;
}


/* ESPERAR UN CARACTER Y DEVOLVERLO UART0*/
unsigned char serial_recv_0 (void) {
  /* Esperar */
  while (!(UCSR0A & (1 << RXC0)));
  /* Devolver lo recibido*/
  return UDR0;
}



/* ENVIAR UN CARACTER UART0*/
void serial_send_0 (unsigned char c) {
  /* Esperar a que el buffer de envio esté vacio*/
  while (!(UCSR0A & (1 << UDRE0)));
  /* poner en UDR para enviarlo */
  UDR0 = c;
  return;
}



/* ENVIA UNA CADENA POR EL PUERTO SERIE UART0*/
void serial_print_0 (const char *msg) {
  while (*msg != 0)
    serial_send_0 (*msg++);
  return;
}


int main() {
  int i;
   
  serial_print_0("Hello");
 
}
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