How to read ASCII values from AT24C32 IC using Arduino? And what is serial.begin(?) in that EEPROM?

Question

#include<Wire.h>
#include<Eeprom24C32_64.h>
#define EEPROM_ADDRESS 0x000
void setup() {
 Serial.begin(9600);
 eeprom.initialize();
 const word address = 0x000;
 const byte count = 94;
 byte inputBytes[count] = { 0 };
 byte outputBytes[count] = { 0 };
 Serial.println("Read bytes from EEPROM memory...");
 eeprom.readBytes(address, count, outputBytes);
 Serial.println("Read bytes:");
 for (byte i = 0; i < count; i++) {
 Serial.write(outputBytes[i]);
 Serial.print(" ");
 }
 Serial.println("");
}
void loop() {
}

Next code... I have tried many sketches.

#include <EEPROM.h>
void setup () {
 Serial.begin (115200);
 Serial.println ();
 for (int addr = 0x0000; addr < 0x0010; addr++) {
 Serial.print ("Address = ");
 Serial.print (addr, HEX);
 Serial.print (", value = ");
 Serial.println (EEPROM.read(addr), HEX);
 }
} // end of setup
void loop () {
}

And most of the sketches check the internal EEPROM of the Arduino, not the external, stored on address 0x000. I want to read data from external AT24C32.

enter image description here

• Majenko: And what have you tried...?
• sempaiscuba: @IHaveQuestion Please don't post code in the comments. Edit your question and add the code there.
• I Have Question: @Majenko done code added plz help to solve this
• I Have Question: @sempaiscuba done all codes

Answer 1

You have to know what the I2C address of your EEPROM is. Right now you have

#define EEPROM_ADDRESS 0x000

The example from the library you cite has this:

/**************************************************************************//**
 * \def EEPROM_ADDRESS
 * \brief Address of EEPROM memory on TWI bus.
 ******************************************************************************/
#define EEPROM_ADDRESS 0x50

Then, you have to create an instance of the Eeprom24C32_64 object:

static Eeprom24C32_64 eeprom(EEPROM_ADDRESS);

That sets up the object for the EEPROM on the right I2C address, so you can later use the eeprom object to read and write.

• jose can u c: Your picture shows an LCD display. Are you expecting output to that?