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Earle F. Philhower, III 2b9fcdb568 Add EEPROM debug printouts, error check to example (#6556)
* Add EEPROM debug printouts, error check to example

Add debug printouts when EEPROM calls fail, even if the API doesn't
allow returning a success/failure code.

Adds error checking to the example to make it explicit that when you
call EEPROM::commit(), you need to look at the result code in your code.

Fixes #6551 , or would fix it if there was error checking in the MCVE.

* Clarify example error message
2019-09-26 14:48:04 -03:00

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C++

/*
EEPROM Read
Reads the value of each byte of the EEPROM and prints it
to the computer.
This example code is in the public domain.
*/
#include <EEPROM.h>
// start reading from the first byte (address 0) of the EEPROM
int address = 0;
byte value;
void setup() {
// initialize serial and wait for port to open:
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
EEPROM.begin(512);
}
void loop() {
// read a byte from the current address of the EEPROM
value = EEPROM.read(address);
Serial.print(address);
Serial.print("\t");
Serial.print(value, DEC);
Serial.println();
// advance to the next address of the EEPROM
address = address + 1;
// there are only 512 bytes of EEPROM, from 0 to 511, so if we're
// on address 512, wrap around to address 0
if (address == 512) {
address = 0;
}
delay(500);
}