bt_gatt_read() multiply read #bluetooth #nrf52840
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antonsolonovich@...
Hello,
I use nrf52840-dk as central_hr and nrf52833-dk as peripheral_hr, examples from NRF Connect SDK. I want to read two or more values using bt_gatt_read(). Code: dis->read_params.func = gatt_read_cb;
dis->read_params.handle_count = 2;
dis->read_params.handles = dis_handles;
err = bt_gatt_read(dis->conn, &(dis->read_params));
I read two values, BT_UUID_DIS_MODEL_NUMBER, which is "Model" and BT_UUID_DIS_SERIAL_NUMBER, with value "serial" Here you can see part of my log, gatt read cb // We are in callback
data length 11 //One length for two values?
data = Modelserial //Don't understand how to split it
gatt read cb //Extra callback with zero length? Does it mean that reading finished?
data length 0
empty data
The problem is that in multiply read I get one callback and one length for all values, and I don't understand how to split it, and what value for what characteristic is. Also I've asked it on DevZone https://devzone.nordicsemi.com/f/nordic-q-a/77045/discovery-dis but no success there Thank you, Anton |
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