characteristic_add returns ERROR 12 [NRF_ERROR_DATA_SIZE]

RE: characteristic_add returns ERROR 12 [NRF_ERROR_DATA_SIZE]

moose — Sun, 17 May 2020 00:43:52 GMT

It turns out this error code (12) was caused because I did not set the max size member. Once I did this, I am not getting error code 12 anymore. However, I am now getting error code 7. I posted a new ticket for this since it is most likely a different issue. Here is the link https://devzone.nordicsemi.com/f/nordic-q-a/61476/characteristic_add-returns-error-7-nrf_error_invalid_param

Amanda Hsieh — Fri, 15 May 2020 12:24:35 GMT

Hi,

What version of SDK are you using?

Could you step into the characteristic_add() function and check the error is returned by sd_ble_gatts_characteristic_add or not? If so, NRF_ERROR_DATA_SIZE indicates Invalid data size(s) supplied, attribute lengths are restricted by Maximum attribute lengths. You could try to give the value to .ble_add_char_user_desc_t::max_size.

-Amanda H.