I get BLE_ERROR_GATTS_SYS_ATTR_MISSING on sd_ble_gatts_hvx.

[sdi_kei]

Hello.

We are developing using nrf52832 (S132 v7.0.1, SDK v17.0.0) as a peripheral.

I am creating a process to set the characteristic and send an indication using sd_ble_gatts_hvx after connecting to Central.
At this time, the error of BLE_ERROR_GATTS_SYS_ATTR_MISSING will occur.

I found out that the solution is to do sd_ble_gatts_sys_attr_set with BLE_GATTS_EVT_SYS_ATTR_MISSING, but BLE_GATTS_EVT_SYS_ATTR_MISSING is not called.

How can it be solved?

Best regards.

[Priyanka]

Hi,

Hopefully this ticket could help you.

Regards,

Priyanka

[sdi_kei]

Hello.

When I put sd_ble_gatts_sys_attr_set in BLE_GAP_EVT_CONNECTED referring to the ticket I was told, BLE_ERROR_GATTS_SYS_ATTR_MISSING no longer occurs. However, NRF_ERROR_INVALID_STATE now occurs.

There was a ticket that said that if I continued to ignore NRF_ERROR_INVALID_STATE, it became NRF_SUCCESS, and I tried it, but it didn't work out.

Is there any other way? We look forward to your advice.

Best regards.

[Priyanka]

Hi,

Is it possible to attach the entire error log / output log that you get here?

Regards,

Priyanka

[sdi_kei]

Hello.

As an error, NRF_ERROR_INVALID_STATE occurs when sd_ble_gatts_hvx is executed. Although it is an error log and a whole log, IAR Embedded Workbench is used and the log is not output.

Best regards.

[Priyanka]

Hi,

From the documentation I can see that the reason for an NRF_ERROR_INVALID_STATE can be as follows:

There are also a few discussion on this topic. You could take a look at this ticket. 

Also, in this ticket, they discuss the topic on writing CCCDs through write command. 

Regards,

Priyanka