sd_ble_gap_scan_start(NULL, &m_scan_buffer); set error_code = 0x00000008

[l.r.97]

Hello, I have adjusted the Uart Central Example from the SDK 15.1.0 with the stack s140 v6.1.0 so that the device can connect to two peripherals. The name of the device is also found in on_adv_report, but then the sd_ble_gap_scan_start () function sets the error_code 0x00000008 from the error_info structure. However, I can not find a suitable error code. Which error should be communicated with this number and how can this error occur?

Many thanks for the help.

[Susheel Nuguru]

The documentation clearly says when this can happen

@retval ::NRF_ERROR_INVALID_STATE Invalid state to perform operation. Either:
 *                                   - Scanning is already ongoing and p_scan_params was not NULL
 *                                   - Scanning is not running and p_scan_params was NULL.
 *                                   - The scanner has timed out when this function is called to continue scanning.
 * 

[l.r.97]

There you are right, but at the moment of the call, the NULL pointer will pass as p_scan_param. At this moment, the scan is already started, otherwise the on_adv would not have been called yet and the device name was not found. 

[Susheel Nuguru]

If you are depending on the log, then I would suggest you to make sure that at every place you stop the scanner or connect to something.

I am not aware of any bugs in scanner that would lead to such behavior that the scanner is started and would not allow you to restart it on an adv_report.