upyble 0.0.3

Command line tool for Bluetooth Low Energy MicroPython devices

uPyble

Command line tool for Bluetooth Low Energy devices

uPyble is intended to be a command line tool upydev-like to make easier the development, prototyping and testing process of devices based on boards running *MicroPython with Bluetooth Low Energy capabilities.

*( Any other BLE device should work as well)

⚠️ Keep in mind that this project is in ALPHA state, sometimes, some commands may not work/return anything ⚠️

Features:

• Command line wireless communication/control of MicroPython/other devices.
• Custom commands to automate communication/control
• Command line autocompletion
• Terminal BLE SHELL-REPL 🔸🔺

🔸 (REPL works, but some SHELL commands are still under development)

🔺 There is a limit in the amount of output it can produce, so long lists or cat a big file will freeze the BLE SHELL-REPL and possibly the device, which makes a reset almost inevitable.

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Getting Started

For Terminal BLE SHELL-REPL :

First be sure that the BLE REPL daemon is enabled and running:

• 1. Put ble_advertising.py ,ble_uart_peripheral.py and ble_uart_repl.py in the device

• 2. Add these lines to main.py:

     import ble_uart_repl
     ble_uart_repl.start()
     

These scripts are in upybleutils directory. (Originals from MicroPython repo bluetooth examples)

Installing :

$ pip install upyble or $ pip install --upgrade upyble to update to the last version available

Finding BLE devices:

Use $ upyble scan or $ upyble tscan for table output format.

$ upyble tscan
Scanning...
Scanning...
BLE device/s found: 1
==============================================================================
        NAME         |                   UUID                   | RSSI (dBm) |
 esp32-30aea4233564  |   9998175F-9A91-4CA2-B5EA-482AFC3453B9   |   -68.0    |

Create a configuration file:

*upyble will use local working directory configuration unless it does not find any or manually indicated with -g option.

• To save configuration in working directory: $ upyble config -t [UPYDEVICE UUID]

  e.g:

  $ upyble config -t 9998175F-9A91-4CA2-B5EA-482AFC3453B9

• To save configuration globally use -g flag: $ upyble config -t [UPYDEVICE UUID] -g

  e.g.

  $ upyble config -t 9998175F-9A91-4CA2-B5EA-482AFC3453B9 -g

  * Be aware that some devices may generate random UUID every a couple of minutes, so this won't be useful in those cases.

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uPyble Usage:

Usage:

$ upyble [Mode] [options]

This means that if the first argument is not a Mode keyword it assumes it is a 'raw' upy command to send to the upy device

Help: $ upyble -h

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uPyble Mode/Tools:

• upyble check: to check local machine Bluetooth characterisctics
• upyble config: save upy device settings (see -t, -g), so the target uuid argument wont be required any more
• upyble scan: to scan for BLE devices (see -n for max number of scans)
• upyble tscan: to scan for BLE devices, results with table format
• upyble sconf: to scan and configure a device that matches a name -d [NAME]
• upyble get_services: to get services of a device, use -r to read them and -mdata to see available metadata
• upyble get_stag: to get service tag from a service code, use -scode to indicate the code
• upyble get_scode: to get service code from a service tag, use -stag to indicate the tag
• upyble get_ctag: to get characteristic tag from characteristic code, use -ccode to indicate the code
• upyble get_ccode: to get characteristic code from a characteristic tag, use -ctag to indicate the tag
• upyble get_aptag: to get appearance tag from an appearance code, use -apcode to indicate the code
• upyble get_apcode: to get appearance code from an appearance tag, use -aptag to indicate the tag
• upyble get_mtag: to get manufacturer tag from manufacturer code, use -mcode to indicate the code
• upyble get_mcode: to get manufacturer code from a manufacturer tag, use -mtag to indicate the tag
• upyble cmdata: to get characteristic metadata (name, type, uuid, unit, format, notes...). (Not all characteristics are available yet), Use -c option to indicate characteristic or -c all to see all that are available. Use -xml to see the xml file instead.
• upyble cmdata_t: get_cmdata in table format.
• upyble dmdata : to get descriptor metadata (Name, uuid, format...). Use -desc option to indicate a descriptor or -desc all to see all that are available.
• upyble follow: to read from a service (see -s, -c , -tm) , e.g : upyble follow -s "Battery Service" , will read all readable characteristics, or use -c to indicate a specific one/group. e.g: upyble follow -s "Battery Service" -c "Battery Level". This mode autodetects format and unit from characteristic metadata
• upyble rfollow: to read from a service (see -s, -c , -tm, -u , fmt and -x) , e.g : upyble follow -s "Battery Service" , will read all readable characteristics, or use -c to indicate a specific one/group. e.g: upyble follow -s "Battery Service" -c "Battery Level"
• upyble see: to get specific info about a devices group use -G option as see -G [GROUP NAME]
• upyble brepl: to enter the BLE SHELL-REPL
• upyble ble@[DEVICE]: to access brepl in a 'ssh' style command if a device is stored in a global group called UPYBLE_G (this needs to be created first doing e.g. $ upyble make_group -g -f UPYBLE_G -devs foo_device UUID) The device can be accessed as $ upyble ble@foo_device or redirect any command as e.g. $ upyble get_services -@foo_device.

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Examples:

Follow the Battery Level and Temperature (cpu) of an Esp32.

​ This needs ble_batt_temp.py in the device. (See upybleutils)

​ In the device REPL do:

>>> import ble_batt_temp
>>> ble_batt_temp.ble_batt.start_batt_bg()

Now in local Shell/Terminal:

1. Scan and configure device:

   $ upyble scan
   Scanning...
   Scanning...
   BLE device/s found: 1
   NAME: esp32-batt-temp, UUID: 9998175F-9A91-4CA2-B5EA-482AFC3453B9, RSSI: -59.0 dBm, Services: Environmental Sensing
   
   $ upyble config -t 9998175F-9A91-4CA2-B5EA-482AFC3453B9 -g
   upyble device settings saved globally!
   

2. Follow services

$ upyble follow -s all
Following service: all
[Service] 180A: Device Information
	[Characteristic] 2A01: (read) | Name: Appearance
	[Characteristic] 2A29: (read) | Name: Manufacturer Name String
[Service] 180F: Battery Service
	[Characteristic] 2A19: (read,notify) | Name: Battery Level
		[Descriptor] 2902: (Handle: 19)
[Service] 181A: Environmental Sensing
	[Characteristic] 2A6E: (read,notify) | Name: Temperature
		[Descriptor] 2902: (Handle: 23)
15:35:28,813 [upyble@esp32-batt-temp] Battery Service [Battery Level] : 77.0 %
15:35:28,843 [upyble@esp32-batt-temp] Environmental Sensing [Temperature] : 56.67 °C
15:35:33,883 [upyble@esp32-batt-temp] Battery Service [Battery Level] : 76.0 %
15:35:33,913 [upyble@esp32-batt-temp] Environmental Sensing [Temperature] : 56.67 °C
15:35:38,954 [upyble@esp32-batt-temp] Battery Service [Battery Level] : 76.0 %
15:35:38,983 [upyble@esp32-batt-temp] Environmental Sensing [Temperature] : 56.67 °C
15:35:44,024 [upyble@esp32-batt-temp] Battery Service [Battery Level] : 71.0 %
15:35:44,053 [upyble@esp32-batt-temp] Environmental Sensing [Temperature] : 56.67 °C
^CDisconnected successfully

See more usage examples at EXAMPLES doc.

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ABOUT

To see more information about upyble dependencies, requirements, tested devices, etc see ABOUT doc.