Read the characteristic value

RE: Read the characteristic value

Roger Clark — Wed, 09 Aug 2017 11:47:59 GMT

Can you clarify what I need to configure in order to receive this event ?

I added some debugging into

ble_evt_dispatch(ble_evt_t * p_ble_evt)

But I don't get an event when the Char is read.

RE: Read the characteristic value

selle — Tue, 22 Mar 2016 14:00:42 GMT

Can you give a bit more detail on how you made the function work? Since the sequence Chart says connection established as requirement, i thought i put it in void on_ble_evt(ble_evt_t * p_ble_evt) to case BLE_GAP_EVT_CONNECTED: can this work? In addition, the flowchart says that the function needs two arguments, mine expects three (conn_handle, *p_uuid, *handle_range) so i gave it the p_ble_evt->evt.gap_evt.conn_handle. This causes no compilation error, but the central to disconnect from the peripheral and stopping completly. Any Ideas what might be wrong here? Wrong place to call the function?

RE: Read the characteristic value

Petter Myhre — Wed, 10 Jun 2015 10:53:56 GMT

Great! Please accept my answer by clicking the grey circle with a check mark in it. Thanks.

RE: Read the characteristic value

nejcokle — Wed, 10 Jun 2015 07:41:35 GMT

I came really close, but i forgot the p_ble_evt part. I managed to get it working now, thanks.

RE: Read the characteristic value

Petter Myhre — Tue, 09 Jun 2015 13:06:36 GMT

Please have a look at this MSC

You will get a BLE_GATTC_EVT_CHAR_VAL_BY_UUID_READ_RSP event(p_ble_evt->header.evt_id) in the ble_evt_dispatch().

Then you can get the value from p_ble_evt->gattc_evt.params.char_val_by_uuid_read_rsp...

RE: Read the characteristic value

nejcokle — Fri, 05 Jun 2015 11:59:59 GMT

I managed to get sd_ble_gattc_char_value_by_uuid_read function to work, but where can i see the value? the function returns NRF_SUCCESS, but i don't know how to implement it to see real value.

RE: Read the characteristic value

Inspectron — Fri, 05 Jun 2015 08:31:51 GMT

Look at this example BLE-APP-LBS. In this example they read the state of the Button state.

RE: Read the characteristic value

nejcokle — Fri, 05 Jun 2015 08:01:01 GMT

I want to read data from my peripheral module with my central module.

RE: Read the characteristic value

Inspectron — Fri, 05 Jun 2015 07:34:07 GMT

Do you want to read the characteristic from central to peripheral or from peripheral to central?