Arduino workshop: adattárolás (2012. november 29.)

eeprom_repl.ino

#include <EEPROM.h>

// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  Serial.begin(9600);     
}

// the loop routine runs over and over again forever:
void loop() {
  Serial.print("Address: ");
  int address = 0;
  while (true) {
    while (!Serial.available());
    byte b = Serial.read();
    Serial.write(b);
    if (b == '\r') break;
    if (b >= '0' && b <= '9') address = address * 10 + b - '0';
  }
  Serial.print("Value: ");
  int value = 0;
  boolean typed = false;
  while (true) {
    while (!Serial.available());
    byte b = Serial.read();
    Serial.write(b);
    if (b == '\r') break;
    typed = true;
    if (b >= '0' && b <= '9') value = value * 10 + b - '0';
  }
  if (typed) {
    EEPROM.write(address, (value & 0xFF00) >> 8);
    EEPROM.write(address + 1, (value & 0xFF));
  } else {
    Serial.print("Read: ");
    Serial.println((EEPROM.read(address) << 8) | EEPROM.read(address + 1), DEC);
  }
}

progmem.ino

#include <avr/pgmspace.h>

char konstans[] PROGMEM = " Ez egy olyan szoveg, ami nem a RAM-bol lesz elerheto, hanem Flash-bol\r\n";
int j;

void setup() {
  Serial.begin(9600);
  j = 0;
}

void loop() {
  Serial.print(j, DEC);
  j++;
  for (int i = 0; ; i++) {
     byte b = pgm_read_byte_near(konstans + i);
     if (b == '\0') break;
     Serial.write(b);
  }
}