error code: 0x08

RE: error code: 0x08

AmiguelS — Tue, 29 Mar 2016 15:36:38 GMT

For those looking for more information on this subject, I will leave here a comment on what was causing this same problem on my application. The last line of the ble_conn_params_init(..) funtion is a call to app_timer_create(...). This timer creation function may return three different codes, one of which is the mentioned NRF_ERROR_INVALID_STATE. According to the documentation, that error code is returned "If the application timer module has not been initialized or the timer is running". So, in the end, I was missing a timer definition, which looks something like APP_TIMER_DEF(m_our_char_timer_id); Remember to also define the timer timeout callback function.

RE: error code: 0x08

Anjaly — Wed, 05 Nov 2014 05:15:17 GMT

I tried with peripheral only. I could figure out my mistake. Thanks for the help.

RE: error code: 0x08

Asbjørn — Tue, 04 Nov 2014 09:34:36 GMT

Error code 0x08 NRF_ERROR_INVALID_STATE indicate that you are trying to do an operation from a state that the specific operations isn't allowed. It could be that you are trying to change the connection parameters too early, for example before you have established the connection itself.

Are you running the S130 with just one peripheral or do you have it running as a central as well? Make sure that you are updating the connection parameters for the right connection. In the S130 example they differentiate between a peripherals connection parameter request and what the central will allow.