Nice to contact you.
I used version @2.0.0 and I found that when writing data to the device using ble.write(deviceId, serviceUuid, characteristicUuid, data, res, err), It is impossible to change whether the sent data is Request or command, but what I'm sure is that the default is Request.
So I would like to ask if there is an api that supports sending commands? As shown in the following figure.
