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Bluetooth example on Android using Python / Pyjnius
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| ''' | |
| Bluetooth/Pyjnius example | |
| ========================= | |
| This was used to send some bytes to an arduino via bluetooth. | |
| The app must have BLUETOOTH and BLUETOOTH_ADMIN permissions (well, i didn't | |
| tested without BLUETOOTH_ADMIN, maybe it works.) | |
| Connect your device to your phone, via the bluetooth menu. After the | |
| pairing is done, you'll be able to use it in the app. | |
| ''' | |
| from jnius import autoclass | |
| BluetoothAdapter = autoclass('android.bluetooth.BluetoothAdapter') | |
| BluetoothDevice = autoclass('android.bluetooth.BluetoothDevice') | |
| BluetoothSocket = autoclass('android.bluetooth.BluetoothSocket') | |
| UUID = autoclass('java.util.UUID') | |
| def get_socket_stream(name): | |
| paired_devices = BluetoothAdapter.getDefaultAdapter().getBondedDevices().toArray() | |
| socket = None | |
| for device in paired_devices: | |
| if device.getName() == name: | |
| socket = device.createRfcommSocketToServiceRecord( | |
| UUID.fromString("00001101-0000-1000-8000-00805F9B34FB")) | |
| recv_stream = socket.getInputStream() | |
| send_stream = socket.getOutputStream() | |
| break | |
| socket.connect() | |
| return recv_stream, send_stream | |
| if __name__ == '__main__': | |
| recv_stream, send_stream = get_socket_stream('linvor') | |
| send_stream.write('hello\n') | |
| send_stream.flush() | |
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| # Same as before, with a kivy-based UI | |
| ''' | |
| Bluetooth/Pyjnius example | |
| ========================= | |
| This was used to send some bytes to an arduino via bluetooth. | |
| The app must have BLUETOOTH and BLUETOOTH_ADMIN permissions (well, i didn't | |
| tested without BLUETOOTH_ADMIN, maybe it works.) | |
| Connect your device to your phone, via the bluetooth menu. After the | |
| pairing is done, you'll be able to use it in the app. | |
| ''' | |
| from jnius import autoclass | |
| BluetoothAdapter = autoclass('android.bluetooth.BluetoothAdapter') | |
| BluetoothDevice = autoclass('android.bluetooth.BluetoothDevice') | |
| BluetoothSocket = autoclass('android.bluetooth.BluetoothSocket') | |
| UUID = autoclass('java.util.UUID') | |
| def get_socket_stream(name): | |
| paired_devices = BluetoothAdapter.getDefaultAdapter().getBondedDevices().toArray() | |
| socket = None | |
| for device in paired_devices: | |
| if device.getName() == name: | |
| socket = device.createRfcommSocketToServiceRecord( | |
| UUID.fromString("00001101-0000-1000-8000-00805F9B34FB")) | |
| recv_stream = socket.getInputStream() | |
| send_stream = socket.getOutputStream() | |
| break | |
| socket.connect() | |
| return recv_stream, send_stream | |
| if __name__ == '__main__': | |
| kv = ''' | |
| BoxLayout: | |
| Button: | |
| text: '0' | |
| on_release: app.reset([b1, b2, b3, b4, b5]) | |
| ToggleButton: | |
| id: b1 | |
| text: '1' | |
| on_release: app.send(self.text) | |
| ToggleButton: | |
| id: b2 | |
| text: '2' | |
| on_release: app.send(self.text) | |
| ToggleButton: | |
| id: b3 | |
| text: '3' | |
| on_release: app.send(self.text) | |
| ToggleButton: | |
| id: b4 | |
| text: '4' | |
| on_release: app.send(self.text) | |
| ToggleButton: | |
| id: b5 | |
| text: '5' | |
| on_release: app.send(self.text) | |
| ''' | |
| from kivy.lang import Builder | |
| from kivy.app import App | |
| class Bluetooth(App): | |
| def build(self): | |
| self.recv_stream, self.send_stream = get_socket_stream('linvor') | |
| return Builder.load_string(kv) | |
| def send(self, cmd): | |
| self.send_stream.write('{}\n'.format(cmd)) | |
| self.send_stream.flush() | |
| def reset(self, btns): | |
| for btn in btns: | |
| btn.state = 'normal' | |
| self.send('0\n') | |
| Bluetooth().run() |
what is
livnor? After pairing with device, when i run kivy app on phone , it crashes.
The logs are as follows:
Hi man do u solve this error ?
what is
livnor? After pairing with device, when i run kivy app on phone , it crashes.
The logs are as follows:
Hi man do u solve this error ?
Yes replace livnor with the name of your bluetooth device.
For eg. My raspberry pi bluetooth name in settings shows as raspberrypi.
Using this name fixed it.
Error with Nonetype solved by name ?
Пятница, 2 апреля 2021, 15:16 +03:00 от Murtaza Haji ***@***.***>:
***@***.*** commented on this gist.
----------------------------------------------------------------------
>>what is livnor? After pairing with device, when i run kivy app on phone , it crashes.
>>The logs are as follows:
>Hi man do u solve this error ?
Yes replace livnor with the name of your bluetooth device.
For eg. My raspberry pi bluetooth name in settings shows as raspberrypi.
Using this name fixed it.
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С уважением,
dbo rebornfull
***@***.***
bluetooth adapter name? Or a device that is connected to the adapter?
Пятница, 2 апреля 2021, 15:16 +03:00 от Murtaza Haji ***@***.***>:
***@***.*** commented on this gist.
----------------------------------------------------------------------
>>what is livnor? After pairing with device, when i run kivy app on phone , it crashes.
>>The logs are as follows:
>Hi man do u solve this error ?
Yes replace livnor with the name of your bluetooth device.
For eg. My raspberry pi bluetooth name in settings shows as raspberrypi.
Using this name fixed it.
—
You are receiving this because you commented.
Reply to this email directly, view it on GitHub , or unsubscribe .
Use common sense, The code is running on your phone, so you will try to connect with external device. Put the name that shows in bluetooth settings of your phone when you pair your phone with the device you are trying to connect to.
thanks, I'll try now
Пятница, 2 апреля 2021, 16:37 +03:00 от Murtaza Haji ***@***.***>:
***@***.*** commented on this gist.
…----------------------------------------------------------------------
Use common sense, The code is running on your phone, so you will try to connect with external device. Put the name that shows in bluetooth settings of your phone when you pair your phone with the device you are trying to connect to.
—
You are receiving this because you commented.
Reply to this email directly, view it on GitHub , or unsubscribe .
what is
livnor? After pairing with device, when i run kivy app on phone , it crashes.
The logs are as follows:
Hi man do u solve this error ?
Yes replace
livnorwith the name of your bluetooth device. For eg. My raspberry pi bluetooth name in settings shows asraspberrypi. Using this name fixed it.
Even after changing the name still facing the same error! Any solution to this? Perhaps I need to change the socket as well , as it is None currently.
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livnorshould be replaced by human readable bluetooth name (The one that shows up in bluetooth settings of your device and is editable).Also it would be great if the code is explained further.
Like there is absolutely no documentation available about why we are using UUID , unless i explicitly learn about bluetooth standards.
Please tag the upstream author, so i can communicate with him.
I would gladly be interested in improving code and readability.