void array_to_string(byte array[], unsigned int len, char buffer[])

{

for (unsigned int i = 0; i < len; i++)

{

byte nib1 = (array[i] >> 4) & 0x0F;

byte nib2 = (array[i] >> 0) & 0x0F;

buffer[i*2+0] = nib1 < 0xA ? '0' + nib1 : 'A' + nib1 - 0xA;

buffer[i*2+1] = nib2 < 0xA ? '0' + nib2 : 'A' + nib2 - 0xA;

}

buffer[len*2] = '\0';

}

char str[32] = "";

array_to_string(data, 16, str);

Serial.println(str);

Serial.println("");

This function been built in arduino and to be used for changing array to string

Questions:

Based on this function how we can make array to string function based in this function