extEEPROM library with AVR128DA64

[seaspac]

I am trying to use a 24LC256 eeprom with AVR128DA64 microcontroller, the library extEEPROM able to initialize the eeprom on an arduino uno but when I use same example for AVR128DA64, the eeprom does not initialize a gives error.

[seaspac]

Also on the same I2C bus is an RTC chip DS1307, which confirms the I2C related hardware and pin connections are OK, I have put 2K2 resistors on SDA and SCL pins. for eeprom confirmation I have used another eeprom 24C32 which is also showing same behaviour on AVR128DA64, but works fine with arduino uno.

[seaspac]

Posting the example code here which is slightly modified.

/Test extEEPROM library.
//Writes the EEPROM full of 32-bit integers and reads them back to verify.
//Wire a button from digital pin 6 to ground, this is used as a start button
//so the sketch doesn't do unnecessary EEPROM writes every time it's reset.
//Jack Christensen 09Jul2014
//Paolo Paolucci 17Mar2016 (fix 28Jun2017)

#include <extEEPROM.h>    //https://github.com/PaoloP74/extEEPROM


//One 24C32 EEPROMs on the bus
const uint32_t totalKBytes = 4;         //for read and write test functions
extEEPROM eep(kbits_32, 1, 32);         //device size, number of devices, page size

//const uint8_t btnStart = 6;              //start button

uint8_t eepStatus = 0;

void setup(void)
{
  //pinMode(btnStart, INPUT_PULLUP);
  Serial.begin(115200);
  do {
    eepStatus = eep.begin(eep.twiClock100kHz);       
    Serial.print(F("extEEPROM.begin failed, status = "));
    Serial.println(eepStatus);
    delay(2000); 
    }    
    while (eepStatus);

  Serial.println ("EEPROM Initialized OK"); 

  Serial.println(F("EEPROM test starting in 5 Sec..."));
  //while (digitalRead(btnStart) == HIGH) 
  delay(5000);    //wait for button push

  uint8_t chunkSize = 64;    //this can be changed, but must be a multiple of 4 since we're writing 32-bit integers
  //    eeErase(chunkSize, 0, totalKBytes * 1024 - 1);
  eeWrite(chunkSize);
  eeRead(chunkSize);

  dump(0, 32);            //the first 32 bytes
  dump(32256, 64);        //the last 64 bytes
  //dump(32512, 64);        //across the device boundary
  //dump(65520, 16);        //the last 16 bytes
}

void loop(void)
{
}

//write test data (32-bit integers) to eeprom, "chunk" bytes at a time
void eeWrite(uint8_t chunk)
{
  chunk &= 0xFC;                //force chunk to be a multiple of 4
  uint8_t data[chunk];
  uint32_t val = 0;
  Serial.println(F("Writing..."));
  uint32_t msStart = millis();

  for (uint32_t addr = 0; addr < totalKBytes * 1024; addr += chunk) {
    if ( (addr & 0xFFF) == 0 ) Serial.println(addr);
    for (uint8_t c = 0; c < chunk; c += 4) {
      data[c + 0] = val >> 24;
      data[c + 1] = val >> 16;
      data[c + 2] = val >> 8;
      data[c + 3] = val;
      ++val;
    }
    eep.write(addr, data, chunk);
  }
  uint32_t msLapse = millis() - msStart;
  Serial.print(F("Write lapse: ")); Serial.print(msLapse); Serial.println(F(" ms"));
}

//read test data (32-bit integers) from eeprom, "chunk" bytes at a time
void eeRead(uint8_t chunk)
{
  chunk &= 0xFC;                //force chunk to be a multiple of 4
  uint8_t data[chunk];
  uint32_t val = 0, testVal;
  Serial.println(F("Reading..."));
  uint32_t msStart = millis();

  for (uint32_t addr = 0; addr < totalKBytes * 1024; addr += chunk) {
    if ( (addr & 0xFFF) == 0 ) Serial.println(addr);
    eep.read(addr, data, chunk);
    for (uint8_t c = 0; c < chunk; c += 4) {
      testVal =  ((uint32_t)data[c + 0] << 24) + ((uint32_t)data[c + 1] << 16) + ((uint32_t)data[c + 2] << 8) + (uint32_t)data[c + 3];
      if (testVal != val)
      {
        Serial.print(F("Error @ addr "));
        Serial.print(addr + c);
        Serial.print(F(" Expected "));
        Serial.print(val);
        Serial.print(F(" Read "));
        Serial.print(testVal);
        Serial.print(F(" 0x"));
        Serial.println(testVal, HEX);
      }
      ++val;
    }
  }
  uint32_t msLapse = millis() - msStart;
  Serial.print(F("Last value: "));
  Serial.print(val);
  Serial.print(F(" Read lapse: "));
  Serial.print(msLapse);
  Serial.println(F(" ms"));
}

//write 0xFF to eeprom, "chunk" bytes at a time
void eeErase(uint8_t chunk, uint32_t startAddr, uint32_t endAddr)
{
  chunk &= 0xFC;                //force chunk to be a multiple of 4
  uint8_t data[chunk];
  Serial.println(F("Erasing..."));
  for (int i = 0; i < chunk; i++) data[i] = 0xFF;
  uint32_t msStart = millis();

  for (uint32_t a = startAddr; a <= endAddr; a += chunk) {
    if ( (a & 0xFFF) == 0 ) Serial.println(a);
    eep.write(a, data, chunk);
  }
  uint32_t msLapse = millis() - msStart;
  Serial.print(F("Erase lapse: "));
  Serial.print(msLapse);
  Serial.print(F(" ms"));
}

//dump eeprom contents, 16 bytes at a time.
//always dumps a multiple of 16 bytes.
void dump(uint32_t startAddr, uint32_t nBytes)
{
  Serial.print(F("EEPROM DUMP 0x"));
  Serial.print(startAddr, HEX);
  Serial.print(F(" 0x"));
  Serial.print(nBytes, HEX);
  Serial.print(F(" "));
  Serial.print(startAddr);
  Serial.print(F(" "));
  Serial.println(nBytes);
  uint32_t nRows = (nBytes + 15) >> 4;

  uint8_t d[16];
  for (uint32_t r = 0; r < nRows; r++) {
    uint32_t a = startAddr + 16 * r;
    eep.read(a, d, 16);
    Serial.print(F("0x"));
    if ( a < 16 * 16 * 16 ) Serial.print(F("0"));
    if ( a < 16 * 16 ) Serial.print(F("0"));
    if ( a < 16 ) Serial.print(F("0"));
    Serial.print(a, HEX); Serial.print(F(" "));
    for ( int c = 0; c < 16; c++ ) {
      if ( d[c] < 16 ) {
        Serial.print(F("0"));
        Serial.print(d[c], HEX);
        Serial.print( c == 7 ? "  " : " ");
      }
    }
    Serial.println(F(""));
  }
}

This example from extEEPROM initialize the eeprom and test the chip by writing and reading data on it. which it is doing fine on Arduino uno.
but when used with AVR128DA64 microcontroller unable to initialize the chip and in that case every 2 sec retries to initialize.