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@DaveCalaway
Last active June 17, 2019 14:55
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Save DaveCalaway/5d196b27ec962d2ccaec8b0ce9f0d3e3 to your computer and use it in GitHub Desktop.
2variables to Bytes - EEPROM
// Thx u internet
/* OUPUT
smash n
5
0
---
smash c
14
1
n == 5
c == 270
*/
#include <EEPROM.h>
int n = 5;
int c = 270;
void setup() {
Serial.begin(9600);
unsigned bytes[4]; // 4 byte = 2^32 = 4.294.967.296
Serial.println("smash n");
bytes[3] = n & 0xFF;
EEPROM.write(0, bytes[3]);
Serial.println(bytes[3]);
bytes[2] = (n >> 8) & 0xFF;
EEPROM.write(1, bytes[2]);
Serial.println(bytes[2]);
Serial.println("---");
Serial.println("smash c");
bytes[1] = c & 0xFF;
EEPROM.write(2, bytes[1]);
Serial.println(bytes[1]);
bytes[0] = (c >> 8) & 0xFF;
EEPROM.write(3, bytes[0]);
Serial.println(bytes[0]);
//Read the 2 bytes from the eeprom memory.
int four = EEPROM.read(0);
int three = EEPROM.read(1);
int two = EEPROM.read(2);
int one = EEPROM.read(3);
Serial.print("n == ");
Serial.println(((four << 0) & 0xFF) + ((three << 8) & 0xFFFF));
Serial.print("c == ");
Serial.println(((two << 0) & 0xFF) + ((one << 8) & 0xFFFF));
}
void loop() {
}
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