sd_ble_gatts_rw_authorize_reply() stuck

[Robert]

Hello ! I am trying to implement a write request but for unknown reason it doesn't transmit back the gatt_status. I have setup the wr_auth = 1. GPIO number 19 si actually a LED and it blinks every time I make a write request for DIODEONE_CHARACTERISTIC1. Here is my code :

void DIODEONE_on_ble_evt(ble_evt_t * p_ble_evt){
    switch(p_ble_evt->header.evt_id){
        case BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST:
        {
            //check if write request on the diodeone characteristic
            if (p_ble_evt->evt.gatts_evt.params.authorize_request.type == BLE_GATTS_AUTHORIZE_TYPE_WRITE &&
                p_ble_evt->evt.gatts_evt.params.authorize_request.request.write.uuid.uuid == DIODEONE_CHARACTERISTIC1){
                ble_gatts_rw_authorize_reply_params_t reply;
                memset(&reply, 0, sizeof(ble_gatts_rw_authorize_reply_params_t));
                reply.type = BLE_GATTS_AUTHORIZE_TYPE_WRITE;
                //check if it is possible to switch diodes. replace 1==1
                if (1==1){
                    //memorize the received data
                    diodeone_data[0] = p_ble_evt->evt.gatts_evt.params.authorize_request.request.write.data[0];
                    //set the new value in GATT server
                    /*ble_gatts_value_t gatts_value;
                    memset(&gatts_value, 0, sizeof(gatts_value));
                    gatts_value.len = 1;
                    gatts_value.offset = 0;
                    gatts_value.p_value = &diodeone_data[0];
                    sd_ble_gatts_value_set(*(connection_handle), accx_handles5.value_handle, &gatts_value);*/
                    nrf_gpio_cfg_output(19);
                    nrf_gpio_pin_set(19);
                    nrf_delay_ms(500);
                    nrf_gpio_pin_clear(19);
                    nrf_delay_ms(500);
                    reply.params.write.gatt_status = BLE_GATT_STATUS_SUCCESS;
                }
                else if (1 > 2){
                    reply.params.write.gatt_status = BLE_GATT_STATUS_ATTERR_WRITE_NOT_PERMITTED;
                }
                sd_ble_gatts_rw_authorize_reply(p_ble_evt->evt.gap_evt.conn_handle, &reply);
            }
        }
        break;
    }
}

Can you please help me with some ideas ? I have nrf51822QFAC with softdevice s130 and I am using the sdk 11.0

[Petter Myhre]

Why are you not checking the returned error code of sd_ble_gatts_rw_authorize_reply()? How do you know if it even succeeds?

[Robert]

Hello Petter ! Thanks for the reply ! :) I don't know how I managed to not think of this. I got the error message right now and it is NRF_ERROR_INVALID_PARAM. Does this mean that I must copy the handles from the request message to the reply message ? The connection handle I suppose has no problem as I do other read requests in the same manner and each of them works just fine.

[Petter Myhre]

You have to set the update bit, the length, and the address there address where the data is stored.

uint8_t  update : 1; /**< If set, data supplied in p_data will be used to update the 
attribute value.Please note that for @ref BLE_GATTS_AUTHORIZE_TYPE_WRITE 
operations this bit must always be set,as the data to be written needs to be stored
and later provided by the application. */

[Robert]

Where do I set it ? I cannot find it.

[Petter Myhre]

What do you mean? It's inside ble_gatts_rw_authorize_reply_params_t