Reading a PH29EE010 EEPROM

1/*This sketch is intended for reading the PH29EE010 EEPROM
2 *from Silicone  Storage Solutions, Inc.
3 *Created by Richard Petersen, October 16, 2022.
4  *
5 *GNU General Public License Ver. 3.0 (GPL3):
6 *https://www.gnu.org/licenses/gpl-3.0.html
7  *
8 *Datasheet: https://datasheet.datasheetarchive.com/originals/distributors/Datasheets-AE/DSA2AE0000798.pdf
9  *
10 *Wiring: EEPROM | Arduino Mega2560
11 *        A0-A7    D37-D30
12 *        A8-A15   D49-D42
13 *        OE#      D3
14 *        WE#      D4
15 *        CE#      D2
16  *        DQ0-DQ7  D22-D29
17 *        Vcc      5V
18 *        Vss      GND
19  */
20
21#define OE 3
22#define WE 4
23#define CE 2
24
25unsigned char buff;
26
27void  setup() {
28  // put your setup code here, to run once:
29  DDRC = B11111111;  //set low address byte to outputs
30  DDRL = B11111111; //set high address byte  to outputs
31  PORTC = B00000000; //set low address byte to 0
32  PORTL = B00000000;  //set high address byte to 0
33  pinMode(OE, OUTPUT);
34  pinMode(WE, OUTPUT);
35  pinMode(CE, OUTPUT);
36  digitalWrite(OE, HIGH); //preparing control pin states
37  digitalWrite(WE, HIGH);
38  digitalWrite(CE, HIGH);
39  Serial.begin(9600);
40  //dump contents to serial:
41  for (uint16_t i = 0; i < 65535; i++) {
42    buff  = EEPROMread(i); //read the byte at the address,
43                          //and  store in "buff".
44    //*
45    Serial.print(buff, BIN); //print in binary
46    Serial.print(", ");
47    Serial.print(buff, HEX); //print in hexadecimal
48    Serial.print(", ");
49    Serial.print(buff); //print in decimal
50    Serial.print("  -- ");
51    Serial.println(i); //print address number
52    //*/
53  }
54}
55
56void  loop() {
57  // put your main code here, to run repeatedly:
58
59}
60
61unsigned  char EEPROMread(uint16_t address) {
62  DDRA = B00000000; //set port A as input
63  PORTC = address; //set low address byte
64  PORTL = address >> 8; //set high  address byte
65  //ports C & L are both 8 bit ports,
66  //so I combined them  to make a 16-bit port.
67  delay(1);
68  digitalWrite(CE, LOW); //enable the chip
69  delay(1);
70  digitalWrite(OE, LOW); //enable output
71  delay(1);
72  return  PINA; //return state of port A
73  delay(1);
74  digitalWrite(CE, HIGH); //disable  chip
75  delay(1);
76  digitalWrite(OE, HIGH); //disable output
77}

1import processing.serial.*;
2
3int[] buff = new int[65535]; //create  an array to store data
4int num = 0; //initialize counter
5
6Serial myPort;  //create serial object
7
8void setup() 
9{
10  size(200, 200);
11  myPort  = new Serial(this, "COM4", 9600); //set to your arduino's serial port
12  frameRate(1000);  //set frame rate to a high value
13}
14
15void draw() {
16  if (num < 65534)  { //copy bytes until last byte
17  if ( myPort.available() > 0) {  // if data is  available,
18  int val = myPort.read();  //save to val.
19    buff[num] = val;  //write val to array
20    num++;  //increase counter
21    print(num);  //print  counter
22    print(" -- ");
23    println(val); //print val
24  }
25  } else  {
26    saveBytes("PH29EE010 - Dump.txt", byte(buff)); //save to file
27    while(true);  //Done.
28  }
29}