Minimal requirements for HID

RE: Minimal requirements for HID

Gordon — Thu, 13 Oct 2016 16:16:02 GMT

That's awesome, thanks! It does seem it just wanted pairing. The code I added was:

      case BLE_GAP_EVT_SEC_PARAMS_REQUEST:{
    ble_gap_sec_params_t sec_param;
    memset(&sec_param, 0, sizeof(ble_gap_sec_params_t));
    sec_param.bond         = 0; // nope
    sec_param.mitm         = 0; // nope
    sec_param.io_caps      = BLE_GAP_IO_CAPS_NONE;
    sec_param.oob          = 1; // Out Of Band data not available.
    sec_param.min_key_size = 7;
    sec_param.max_key_size = 16;
    err_code = sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_SUCCESS, &sec_param, NULL);
    // or BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP to disable pairing
    APP_ERROR_CHECK(err_code);
  } break; // BLE_GAP_EVT_SEC_PARAMS_REQUEST

RE: Minimal requirements for HID

Petter Myhre — Thu, 13 Oct 2016 13:09:25 GMT

I think your guess is correct. You can try to only pair, and see if that changes anything. See this. Just reply with sd_ble_gap_sec_params_reply() when you get the BLE_GAP_EVT_SEC_PARAMS_REQUEST event.

RE: Minimal requirements for HID

Gordon — Thu, 13 Oct 2016 12:52:54 GMT

Well, at the moment there is no pairing/bonding implemented - it's just a device that you can connect to, so ideally I'd have it working just like that for the moment. Yes, I try and connect via Android Bluetooth settings, but it doesn't show up under 'Available Devices' (but it does via nRF Connect on the save device). I guess Android might require that there is some security in the link?

RE: Minimal requirements for HID

Petter Myhre — Thu, 13 Oct 2016 12:24:58 GMT

What do you want? Pair, bond, or neither? It seems from the HID spec that no pairing is required to access the characteristics, but I'm not sure if iOS/Android requires it. How are you connecting? Through Bluetooth Settings?