Hello friends, I´m starting to try to storage info into a i2c EEPROM (exactly the M24512, a 512kbit EEPROM that is 64kBytes capaty and 128Bytes per page).
Exactly what I want to do is to storage info like an analog read or a text string because I´m working on a mini-meteorological station that gets Lux info, Heat, Time and date but I don´t know how to save the info, I have this code:
#include <Wire.h>
int data;
byte LSB = 0; //LSB bits
byte MSB = 0; //MSB bits
int indice = 64; //How many bytes I want to read
int contador = 0; //Auxiliar counter
#define Addr 0x57
void setup() {
Wire.begin();
Serial.begin(9600);
delay(100);
for(int i = 0; i <= indice; i++){ //This loop runs over the LSB and write 1 byte in Hex
Wire.beginTransmission(Addr);
Wire.write(MSB);
Wire.write(LSB);
Wire.write(0x37); //Here I should put the data which I don´t know what kind must be...
Wire.endTransmission();
Serial.print(" ");
LSB = (LSB++); //Increase the LSB bit in order to keep writting
delay(100);
}
LSB = 0; //Reset LSB for the next loop start from 0
Serial.println("");
}
void loop() {
for(; contador <= indice; contador++){ //Reading EEPROM loop from 0 to indice value
Wire.beginTransmission(Addr); // Start I2C transmission
Wire.write(MSB); // Select data register [FF,ff]
Wire.write(LSB); // [ff,FF]
Wire.endTransmission(); // End I2C transmission
Wire.requestFrom(Addr, 1); // Request 1 byte of data
if(Wire.available() == 1) // Read 1 byte of data
{ data = Wire.read(); }
Serial.print(data, HEX);
Serial.print(" ");
LSB = (LSB++);
}
delay(20);
}
I´ve tryed doing Serial.print(analogRead(A0)); to see the data I´m storaging (in theory) and Wire.write(analogRead(A0)); but when I read the data back it doesn´t match... It only works fine when I do ...write(0xFF) ...(0x31) ...('a') or something else but allways only in Hex and ascii... please help, I´ve read and watched videos until my brain went kaboom and still without an idea of what I have to save what I need...
Thank you in advance! and please excuse my bad english.
