Microchip Studio, XC8, AVR-GCC und Speicherbedarf

Program Memory Usage: 3996 bytes   48,8 % Full

Data Memory Usage:      22 bytes    2,1 % Full

Program Memory Usage: 1958 bytes   23,9 % Full

Data Memory Usage:      20 bytes    2,0 % Full

#define F_CPU 3333333UL

#include <avr/io.h>

#include <util/delay.h>

#include <stdio.h>

static void USART0_sendChar(char c)

{

  while(!(USART0.STATUS & USART_DREIF_bm)) {}

  USART0.TXDATAL = c;

}

static int USART0_printChar(char c, FILE *stream)

{

  USART0_sendChar(c);

  return 0;

}

static FILE USART_stream = FDEV_SETUP_STREAM(USART0_printChar, NULL, _FDEV_SETUP_WRITE);

int main(void)

{

  stdout = &USART_stream;

  PORTB.DIRSET = PIN2_bm;          // PB2 output (USART0 TxD)

  USART0.BAUD = 231;               // 57600 Bd @ 3.33MHz

  USART0.CTRLB = USART_TXEN_bm;    // enable transmitter

  char strng[681];

  for(int i=0;i<681;i++)

  {

    strng[i] = 32;

  }

  for(int j=0;j<10;j++)

  {

    for(int i=0;i<10;i++)

    {

      strng[i+68*j] = i+48;

    }

    for(uint8_t i=0;i<26;i++)

    {

      strng[i+68*j+12] = i+65;

    }

    for(uint8_t i=0;i<26;i++)

    {

      strng[i+68*j+40] = i+97;

    }

  }

  for(int i=0;i<10;i++)

  {

    strng[66+68*i] = 13;

    strng[67+68*i] = 10;

  }

  strng[680] = 0;

  _delay_ms(5000);

  while(1)

  {

    printf("%s\r\n", strng);

    _delay_ms(1000);

  }

}

static FILE USART_stream = FDEV_SETUP_STREAM(USART0_printChar, NULL, _FDEV_SETUP_WRITE);

static FILE USART_stream = { 0, 0, _FDEV_SETUP_WRITE , 0, 0, USART0_printChar, NULL, 0 };