I get the error Not enough resources for operation

[Osildir]

Hi !

I am using NRF52DK and I want send some daat with BLE. I have to send 800 bytes in BLE by packages of 25. So I tried this :

     for(j=0; j<16; j++)
     {
        for (i = 0; i < 25; i++)
          {
             value[i] = i;
             value1[i] = (j*25)+i;
         }
           

          err_code = ble_nus_string_send(&m_nus, value, &tempo);

           if ((err_code != NRF_SUCCESS) &&
              (err_code != NRF_ERROR_INVALID_STATE) &&
              (err_code != NRF_ERROR_RESOURCES) &&
              (err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
              )
          {
              APP_ERROR_HANDLER(err_code);
              
          }


          err_code = ble_nus_string_send(&m_nus, value1, &tempo);

                     if ((err_code != NRF_SUCCESS) &&
              (err_code != NRF_ERROR_INVALID_STATE) &&
              (err_code != NRF_ERROR_RESOURCES) &&
              (err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
              )
          {
              APP_ERROR_HANDLER(err_code);
          }
          printf("\t%d\n", err_code);
          printf("\t[%d]\n", j); 

BUT when I look my uart terminal, I can read only 3 times a "0" on err_code and "19" on 13 others times.

So i would like know if someone can explain me why I have this "Not enough ressources for operation" error. And how can i solve it ? :)

Best regards.

Séraphin

[Turbo J]

The NRF52 can queue at most 6 or 7 TX packets. Also, ble_nus_send_string may not be able to send 25 bytes in a single packet - this requires Bluetooth 4.2 support on the central AFAIK.

[Osildir]

It's weird. When I look the parametters of the fonction I can see I can send until 247-1-2 bytes ..
More, my 7 first packages of 25 bytes are recieved without problem on the smartphone.

But thanks for the track, i'll try to reduce the lentgh of my package and call more times the function to see.