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Arduino/libraries/EEPROM/examples/eeprom_write/eeprom_write.ino
Tom Igoe 35777612c0 Changed all .pde examples to .ino
All examples in /build/shared/examples/ and /libraries/ have had their
extensions changed to .ino
2011-08-30 15:33:32 -04:00

39 lines
877 B
C++

/*
* EEPROM Write
*
* Stores values read from analog input 0 into the EEPROM.
* These values will stay in the EEPROM when the board is
* turned off and may be retrieved later by another sketch.
*/
#include <EEPROM.h>
// the current address in the EEPROM (i.e. which byte
// we're going to write to next)
int addr = 0;
void setup()
{
}
void loop()
{
// need to divide by 4 because analog inputs range from
// 0 to 1023 and each byte of the EEPROM can only hold a
// value from 0 to 255.
int val = analogRead(0) / 4;
// write the value to the appropriate byte of the EEPROM.
// these values will remain there when the board is
// turned off.
EEPROM.write(addr, val);
// advance to the next address. there are 512 bytes in
// the EEPROM, so go back to 0 when we hit 512.
addr = addr + 1;
if (addr == 512)
addr = 0;
delay(100);
}