ERROR 19 when calling ble_nus_data_send

[NikTheNordicUser]

Hi, I am getting an error 19  which causes a reset after some time running a modified version of the ble_nus peripheral example may someone guide me on how to sort the issue please as im relatively new to Bluetooth. 

in my application, i have a peripheral nrfd2dk (using a modified version of the ble_nus example) and i also have a central nrf52dk (using a modified version of the ble_nus_c example) on the peripheral i have spi running read running in a main loop such that i fill up a buffer of 242 with gyro readings with a terminator and an initiator. this can be seen below in the image. 

from some research the error is due to the tx buffer being overly filled. i am not using the BLE_GATTS_EVT_HVN_TX_COMPLETE as I'm not sure how to use it hence I have some delays (which i would like to remove and use the flag BLE_GATTS_EVT_HVN_TX_COMPLETE) may someone guide me please on how to fix my issue and show me how to use BLE_GATTS_EVT_HVN_TX_COMPLETE and also show me how i could send my data faster as any alteration of the ble definition causes the central to not connect to the peripheral .

thank you in advance 

please help

[Einar Thorsrud]

Hi,

You have described this well yourself. If you cannot queue data because the buffer is full, you can either try again until successful or simply wait for a BLE_GATTS_EVT_HVN_TX_COMPLETE event. There are some examples of this in the SDK, for instance you can refer to components\ble\ble_services\ble_cscs\ble_sc_ctrlpt.c in SDK 17.0.2.

[NikTheNordicUser]

yes, is it possible to be shown how to fix this issue please or how i can wait for a tx_complete please?

[Einar Thorsrud]

Please see my previous post

[NikTheNordicUser]

apoligies, i managed .. is there a way i can se how fast my data is being sent (i.e. wat MBps im getting please)

[Karl Ylvisaker]

NikTheNordicUser said:

apoligies, i managed

Based on this, and your comment in your other ticket, I am glad to hear that the issue -  NRF_ERROR_RESOURCES being returned from ble_nus_data_send - is finally resolved. I will therefore close this ticket. We may continue the other question you have here in your other ticket.

For future reference, please create a new ticket if you have a new issue, or your questions diverge from the original ticket.
This keeps the forum tidy and easy to navigate for other users.

Best regards,
Karl