The application seems to stop at an instance where I invoke a Send call to send data over to a ble central, and the callstack looks as follows. Any way to narrow down the cause?
I tried the program later and I got the following stack. Thing is: nothing useful gets printed in the debug console
Hi Morpho,
Skipping APP_ERROR_CHECK() might not be a good idea. It won't allow you to detect if there is any error.
When you receive an error you would need to check what it tells you. For example error 14 means NRF_ERROR_NULL (check nrf_error.h) and if you read the description of blcm_link_ctx_get() you can find:
* @retval NRF_ERROR_NULL If \p p_link_ctx_storage is NULL or contains a NULL pointer, or if
* \p pp_ctx_data is NULL.
You would need to check if p_link_ctx_storage or pp_ctx_data is NULL.
From the screenshot you provided I don't see your proprietary service, only the NUS service.
From the screenshot you provided I don't see your proprietary service, only the NUS service.
Exactly. In the first screenshot, you could my service but for some reason, I no longer see it even though I reverted my changes to the older revision. Do you really why would this be?
Skipping APP_ERROR_CHECK() might not be a good idea. It won't allow you to detect if there is any error.
Oh, I thought that's what you initially meant when you mentioned "you can modify the code to ignore the NRF_ERROR_INVALID_STATE and not assert it. "
Hi Morpho,
Please do it step by step.
Step one you can try to remove the UART service in the example and flash and check what you have in the ATT table when doing service discovery. Try not to bond to the device because the phone may cache the att table and don't update it if it's bonded.
Step two you can add your own service (without any functionality) just to check if the service is listed in the att table.
After you can find it in the att table you can start implementing the code as we discussed earlier.
Sir, I just don't understand how's UART service even being initialized when i'm not even doing so in my code? Or maybe if you could point me to a specific point in the code that shoud really tell whether UART service is being used or not. In the first screenshot you can see the custom service that's initialized. Just not sure how i'm no longer seeing it.
that's what I have.
I do see my service under Advertised Services however not quite under Attribute Table
#define CUSTOM_SERVICE_UUID_BASE {0xBC, 0x8A, 0xBF, 0x45, 0xCA, 0x05, 0x50, 0xBA, \
0x40, 0x42, 0xB0, 0x00, 0xC9, 0xAD, 0x64, 0xF3}
ble_uuid128_t baseUuid = {CUSTOM_SERVICE_UUID_BASE};
errorCode = sd_ble_uuid_vs_add(&baseUuid, &pSrvInfo->uuidType);
Hi,
Please be aware that the advertising data and the attribute table may not be related. They are belong to two different profiles and is configured independently.
What you add to advertising packet is only for advertising/connecting and has nothing to do when you are connected.
What is added to the attribute table is with these call sd_ble_gatts_service_add and sd_ble_gatts_characteristic_add
Please have a look at this guide