EEPROM24LC01.cpp

00001 /*
00002  ***************************************************************************
00003  * File Name    : EEPROM24LC01.cpp
00004  *
00005  * Revision     : 1.0
00006  * Notes        :
00007  * Target Board : mbed LPC
00008  *
00009  * Revision History:
00010  ***************************************************************************
00011  */
00012 #include "EEPROM24LC01.h"
00013 #include "mbed.h"
00014 
00015 EEPROM24LC01::EEPROM24LC01(I2C *i2c, const int address):
00016     _i2c_address(address<<1), _i2c(i2c)
00017 {
00018 }
00019 
00020 int EEPROM24LC01::byte8_write(char *data)
00021 {
00022     int res;
00023     char buf[9];
00024     int i = 0;
00025 
00026     buf[0] = 0;        // Address
00027 
00028     for(i=0;i<8;++i){
00029         buf[i+1] = data[i];
00030     }
00031 /*    buf[1] = data[0];
00032     buf[2] = data[1];
00033     buf[3] = data[2];
00034     buf[4] = data[3];
00035     buf[5] = data[4];
00036     buf[6] = data[5];
00037     buf[7] = data[6];
00038     buf[8] = data[7];
00039 */
00040     res = _i2c->write(_i2c_address, buf, sizeof(buf), false);
00041 
00042     wait_ms(5);         // 5mS
00043 
00044     return res;
00045 }
00046 
00047 
00048 int EEPROM24LC01::readAll( char *data, int size )
00049 {
00050     int res;
00051     char buf[1];
00052 
00053     buf[0] = 0;        // Read Address High byte set
00054     res = _i2c->write(_i2c_address, buf, sizeof(buf), true);
00055     res = _i2c->read(_i2c_address, (char *)data, size, false);
00056 
00057     return res;
00058 }