1. #include <Wire.h>
2. #include "Adafruit_FRAM_I2C.h"
3.  
4. /* Connect SCL    to analog 5
5.    Connect SDA    to analog 4
6.    Connect VDD    to 5.0V DC
7.    Connect GROUND to common ground */
8.    
9. Adafruit_FRAM_I2C fram     = Adafruit_FRAM_I2C();
10. uint16_t          framAddr = 0;
11.  
12. void writeByte(uint16_t pos,uint8_t value) {
13.   fram.write8(pos,value);
14.   Serial.print("Write Byte: ");
15.   Serial.println(value, HEX);
16. }
17.  
18. uint8_t readByte(uint16_t pos){
19.   uint8_t value;
20.   value = fram.read8(pos);
21.   Serial.print("Read Byte: ");
22.   Serial.println(value, HEX);
23.   return value;
24. }
25.  
26. void dump(){
27.   uint8_t value;
28.   for (uint16_t a = 0; a < 32768; a++) {
29.     value = fram.read8(a);
30.     if ((a % 32) == 0) {
31.       Serial.print("\n 0x");
32.       Serial.print(a, HEX);
33.       Serial.print(": ");
34.     }
35.     Serial.print("0x");
36.     if (value < 0x1)
37.       Serial.print('0');
38.     Serial.print(value, HEX);
39.     Serial.print(" ");
40.   }
41. }
42.  
43. void setup() {
44.   // Check code
45.   Serial.begin(9600);
46.  
47.   if (fram.begin()) {  // you can stick the new i2c addr in here, e.g. begin(0x51);
48.     Serial.println("Found I2C FRAM");
49.   } else {
50.     Serial.println("No I2C FRAM found ... check your connections\r\n");
51.     while (1);
52.   }
53.  
54.   uint8_t letter = 82;
55.   writeByte(0x0,letter);
56.   dump();
57. }
58.  
59. void loop() {
60.   // put your main code here, to run repeatedly:
61.  
62. }