The Android 5.0.X will only allow you to use the new API for BLE. This new API comes with a new feature, which you mentioned in your question: The possibility of advertising, from your own Android device, using it in Peripheral mode. However, the disadvantaged of this new feature is that it is hardware dependent. … Read more
I almost have it working. It pairs programmatically but I can’t get rid of the “Pairing request” notification. Some answers to this question claim to be able to hide it just after it is shown using the hidden method cancelPairingUserInput() but that doesn’t seem to work for me. Edit: Success! I eventually resorted to reading … Read more
You can not only consume environment variables in node with process.env but also set them. This will set the variable within your current node process and any child processes it calls, but not the calling shell itself. // consume var alreadySetEnvVarForDevice = process.env.NOBLE_HCI_DEVICE_ID // set process.env[‘NOBLE_HCI_DEVICE_ID’] = 1
Android 7 prevents scan start-stops more than 5 times in 30 seconds. The bad side is, it doesn’t return an error, instead just prints a log. The app thinks the scan is started but it’s not actually started back at the ble stack. Also it converts long running scans to opportunistic scan with an intent … Read more
I just had the same problem. If you see the source code of BluetoothGatt.java you can see that there is a method called refresh() /** * Clears the internal cache and forces a refresh of the services from the * remote device. * @hide */ public boolean refresh() { if (DBG) Log.d(TAG, “refresh() – device: … Read more
Try this… Run gatttool -b <MAC Address> –interactive like you did before. You’ll get a prompt and then you type connect. You should see a CON in the prompt indicating that you’ve connected to the device. Then type char-read-uuid 2902. You should get a list of all CCC (Client Characteristic Configuration) attributes on the device. … Read more
Alright I have figured it out. The issue was mainly an oversight of when I was reading through the BluetoothGatt documentation. I was calling .disconnect(), but not .close(). Since the Galaxy s4 can only handle 6 connections at a time, my service was only running 6 times. Adding the .close() to my code allowed it … Read more
I’ve already gone through this for at least one week having this same issue. I’ve already asked a question here and I’ve already answered on my own. The main problem is an Android BUG issue. It’s sending a non permitted command on a fixed L2CAP channnel. But when Android is communicating with normal peripheral BLE … Read more