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2b9fcdb568
* 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
46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
/*
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EEPROM Write
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Stores values read from analog input 0 into the EEPROM.
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These values will stay in the EEPROM when the board is
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turned off and may be retrieved later by another sketch.
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*/
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#include <EEPROM.h>
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// the current address in the EEPROM (i.e. which byte
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// we're going to write to next)
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int addr = 0;
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void setup() {
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Serial.begin(115200);
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EEPROM.begin(512);
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}
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void loop() {
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// need to divide by 4 because analog inputs range from
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// 0 to 1023 and each byte of the EEPROM can only hold a
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// value from 0 to 255.
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int val = analogRead(A0) / 4;
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// write the value to the appropriate byte of the EEPROM.
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// these values will remain there when the board is
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// turned off.
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EEPROM.write(addr, val);
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// advance to the next address. there are 512 bytes in
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// the EEPROM, so go back to 0 when we hit 512.
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// save all changes to the flash.
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addr = addr + 1;
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if (addr == 512) {
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addr = 0;
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if (EEPROM.commit()) {
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Serial.println("EEPROM successfully committed");
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} else {
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Serial.println("ERROR! EEPROM commit failed");
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}
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}
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delay(100);
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}
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