Does nrf toolbox (android) work on nrf52 related SD, e.g. S140?

[Mitch996]

Hello everybody!

Feel free to read this question for more background information:

devzone.nordicsemi.com/.../

I'll give everyone reading this a quick bulletin run down as to what happened to save time:

• Migrating from nrf51 S110 to nrf52 S120
• ble_hvx() function on my nrf52840 returns "0x00000008" "INVALID STATE" error.
• Most likely the cccd handle wasn't set by my android app
• But it worked flawlessly back in nrf51 S110
• User Endnode here told me that it's very likely that the old android API function (not to be mistaken with the nrf51 MCU function I mentioned above, the successful establishment of the communication between android device and MCU requires many functions on both sides) setcharacteristicnotification, which use "WRITE" method on the GATT instead of "REQUEST" method, fails to trigger the proper set cccd handle operation, and is likely ignored altogether by the latest S140 SD.

So, I went on trying to find the relevant function, but couldn't. I'm here thinking, shouldn't nrf toolbox be working with S140 on Nrf52 series? If that's the case, I'll just use whatever function they are using from the android API, and mission accomplished?

I'm trying to git the APP source code to local, but at this point, I don't know if the tool box work at all, if it does, then it'll just be monkey see monkey do kind of deal, if not, I'm not going to spend my time on it.

Also, if you are familiar with this, feel free to tell me what function the toolbox use to set the cccd handle.

Cheers.

[Aleksander Nowakowski]

The current version of toolbox in Google play still have this issue, I fixed it right now only on GitHub, and on Friday. They will be available in the next version. What profile in Toolbox are you using?

[Mitch996]

Hello, @Aleksander, I'm even more confused, are you a casual contributor to this project (the nrfTool box) or someone on the official developer team?

I'm not using the nrf toolbox or DK, the reason I'm here banging my head against the toolbox is that I want to find the proper code to enable notification. You told me that the proper code is:

characteristic.setWriteType(BluetoothGattCharacteristic.WRITE_DEFAULT)

and then write 0x0001 to the descriptor, but I have shown you that it doesn't work, so what is the ACTUAL proper code to get the job done??? And there isn't even a "WRITE_DEFAULT" anywhere?

Please advise?

[Aleksander Nowakowski]

Hi, I just tried nRF Toolbox with nRF52840 + s140 5.0.0.alpha2 + HRM and UART samples and everything works as expected. Here's the code it is using: github.com/.../BleManager.java

Important steps:

// Enable notifications locally
gatt.setCharacteristicNotification(characteristic, true);
// Enable notifications on a remote device
final BluetoothGattDescriptor descriptor = characteristic.getDescriptor(CLIENT_CHARACTERISTIC_CONFIG_DESCRIPTOR_UUID);
final int originalWriteType = characteristic.getWriteType();
characteristic.setWriteType(BluetoothGattCharacteristic.WRITE_TYPE_DEFAULT);
descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
gatt.writeDescriptor(descriptor);
characteristic.setWriteType(originalWriteType);

[Aleksander Nowakowski]

Then wait for onDescriptorWrite(...) callback to check the status. If this doesn't work, you may have a bug in your code on nRF side, as I wrote before.

[Mitch996]

@Aleksander Nowakowski

Thank you! I'm going to check it out right away, will get back ASAP!