Why this bitwise do not work?

Hi everyone,

I believe that this is very simple but I cannot figure out why the following bitwise operation do not work

Code:

---


 // Get the unique identifier of the device
  uint32_t msb;
  uint32_t lsb;


  lsb = NRF_FICR->DEVICEID[0]; // read the less significant 32bits
  msb = NRF_FICR->DEVICEID[1]; // read the most significant 32bits
  uint64_t deviceID = (uint64_t)msb << 32 || lsb; // 64 bit unique device identifier


  NRF_LOG_INFO("lsb: %x", lsb);
  NRF_LOG_INFO("msb: %x", msb);
  NRF_LOG_INFO("Device ID: %x", deviceID);

---

As you can see I can read normally lsb and msb but the deviceID is 1

Attachment 16211

Any advice?

Nick

You used || instead of |

I'm a bit puzzled why you would use bitwise or though: wouldn't that mean that differing msb and lsb parts can result in the same device id?

EDIT: oh, I misread the shift direction, so that's okay as you're combining rather than losing information

I told you that this is a simple one!! Thanks, I didn't notice!!