#define BAUD_RATE (int)100e3 // the standard baud rate
...
void initIR(){
    bcm2835_init();
    bcm2835_i2c_begin();
    bcm2835_i2c_set_baudrate((int)BAUD_RATE);
    bcm2835_i2c_setSlaveAddress(0x5a);
}
void writeConfig(){
    unsigned char comm = 0x25; // the command to send. access EEPROM
    unsigned char * write = (unsigned char *)malloc(sizeof(unsigned char) * 9);
    unsigned char * clear = (unsigned char *)malloc(sizeof(unsigned char) * 9);

    write[0] = 0x25; write[1] = 0x74; write[2] = 0xb4; write[3] = 0x70;
    clear[0] = 0x25; clear[1] = 0x00; clear[2] = 0x00; clear[3] = 0x83;

    /*bcm2835_i2c_begin();*/
    int c = bcm2835_i2c_write(clear, 3);
    waitMillis(100);
    int w = bcm2835_i2c_write(write, 3);
    waitMillis(100);


    printf("c: %d, w: %dn", c, w);
    free(clear);
    free(write);
}

| Return value | Message                        |
|:------------:|:------------------------------:|
| 0            | Message received OK            |
| 1            | Received NACK                  |
| 2            | Received clock stretch timeout |
| 3            | Not all data sent/received     |