Bluetooth low energy, how to parse R-R Interval value?

Question

My application is receiving information from smart heart device. Now i can see pulse value. Could you please help me to parse R-R Interval value? How can i check device supp

Answer 1

EDIT: this work for me, i get the correct rr values: In some cases you can find two values at the same time for rr.

- (void) updateWithHRMData:(NSData *)datas {

    const uint8_t *reportData = [datas bytes];

    uint16_t bpm = 0;
    uint16_t bpm2 = 0;

    if ((reportData[0] & 0x04) == 0)
    {
        NSLog(@"%@", @"Data are not present");
    }
    else
    {

        bpm = CFSwapInt16LittleToHost(*(uint16_t *)(&reportData[2]));

        bpm2 = CFSwapInt16LittleToHost(*(uint16_t *)(&reportData[4]));

        if (bpm != 0 || bpm2 != 0) {

                NSLog(@"%u", bpm);

                if (bpm2 != 0) {
                    NSLog(@"%u", bpm2);
                }

        }

    }

}