File content as of revision 0:f4b9a1ec4c5f:

#include "mbed.h"
 
I2C i2c(I2C_SDA, I2C_SCL);
 
#define FRAM_BASEADDR (0xA) // A7 .. A4

uint8_t fram_calcAddr(uint8_t pageAdr, bool receiveBit){
    return FRAM_BASEADDR << 4 | ((pageAdr<<1) & 0xf) | receiveBit;
}

bool fram_sendAddr(uint8_t pageAdr, uint8_t wordAdr, bool receiveBit){
    uint8_t addr = fram_calcAddr(pageAdr, receiveBit);
//    printf("addr: %X\n", addr);
    return !i2c.write(fram_calcAddr(pageAdr, receiveBit), (const char*)&wordAdr, 1, 1);
}

bool fram_write(uint8_t pageAdr, uint8_t wordAdr, uint8_t* buf, uint16_t dataLength){
    int ret;
    
    ret = fram_sendAddr(pageAdr, wordAdr, false);
    if(ret != 1){
        printf("write: addressing failed\n");
        i2c.stop();
        return false;
    }
    
    for(int i=0; i<dataLength;++i){
        ret = i2c.write(buf[i]);
        if(ret != 1){
            printf("write: writing data %i failed\n", i);
            i2c.stop();
            return false;
        }
    }
    i2c.stop();
    return true;
}

bool fram_read(uint8_t pageAdr, uint8_t wordAdr, uint8_t* buf, uint16_t dataLength){
    int ret;
    
    ret = fram_sendAddr(pageAdr, wordAdr, false);
    if(ret != 1){
        printf("read: addressing failed\n");
        i2c.stop();
        return false;
    }
    
    ret = i2c.read(fram_calcAddr(pageAdr, true), (char*)buf, dataLength, 0);
    if(ret != 0){
        printf("Read data failed!");
        return false;
    }
    
    return true;
}

 
Serial pc(SERIAL_TX, SERIAL_RX);
 
bool fram_test(){
    int i, ret;
    const int length = 600;
    uint8_t buf[length];
    
    printf("FRAM Test\n");
    for(i=0; i<length; ++i)
        buf[i] = i;
    
    ret = fram_write(0, 0, buf, length);
    printf("write: %i\n", ret);
    if(!ret) return false;
    
  
    ret = fram_read(0, 0, buf, length);
    printf("read: %i\n", ret);
    if(!ret) return false;
    
    
    for(i=0; i<length; ++i)
        if(buf[i] != (uint8_t)i){
            printf("data mismatch: i: %i buf[i]: %i (uint8_t)i: %i\n", i, buf[i], (uint8_t)i);
             return false;
             }
        
    return true;
}
 
int main()
{
 
    printf("Hello FRAM\n");
    while (1) {
        pc.printf("fram_test: %i\n", fram_test());
        wait(1.0);
    }
 
}