Meaning of error codes

RE: Meaning of error codes

SergeyP — Thu, 15 Dec 2016 07:15:18 GMT

I figured out why my attempt to shorten the DEVICE_NAME didn't help at that time - that is because I specified name_type as BLE_ADVDATA_SHORT_NAME and short_name_len was already small enough which resulted in the name shorter than even my shortened full name that is why I didn't see a difference. Once I replaced BLE_ADVDATA_FULL_NAME with BLE_ADVDATA_SHORT_NAME - then I can confirm that I was able to reduce Adv Packet Size by reducing DEVICE_NAME or Manufacturer Data.

RE: Meaning of error codes

SergeyP — Tue, 13 Dec 2016 09:18:53 GMT

Thank you Alex, you are right, I debugged the function and saw that NRF_ERROR_DATA_SIZE is indeed returned but it was returned from within name_encode rather than from manuf_specific_data_encode, so, in fact it could not encode the Name because Manufacturer Specific Data was long but what is interesting is that shortening the name didn't help at all - I was only able to get rid of the error by shortening the Manufacturer Data OR setting advdata.include_appearance to false.

Is this expected? I assumed that it should not matter whether I reduce the Name or Manufacturer data as long as total of my advertising data fits into 31 bytes.

RE: Meaning of error codes

Alex — Mon, 12 Dec 2016 09:34:33 GMT

You probably need to step inside that function. Most likely ble_advdata_set() returns error and it is

NRF_ERROR_DATA_SIZE                   (NRF_ERROR_BASE_NUM + 12) ///< Data size exceeds limit

in nrf_error.h, your manuf_data is too big, check size of your advertising packet, what is included in it and how much adata you can add as manuf_data