uble

Lightweight Bluetooth Low Energy driver written in pure python for micropython.

WARNING: this project is in beta stage and is subject to changes of the code-base, including project-wide name changes and API changes.

Features

Parsing and Building of HCI packets
Allows PyBoard to control BLE chips using HCI packets

Usage

Parsing of HCI packets:

  MicroPython v1.8.7-79-g221f88d-dirty on 2017-01-26; PYBv1.1 with STM32F405RG
  Type "help()" for more information.
  >>> from bluetooth_low_energy.protocols.hci import (cmd, uart)
  >>> buf = b'\x01\x03\x0c\x00'
  >>> hci_uart = uart.HCI_UART.from_buffer(buf)
  >>> print(hci_uart)
  <HCI_UART pkt_type=COMMAND(0x01) data=030c00>
  >>> hci_cmd = cmd.HCI_COMMAND.from_buffer(hci_uart.data)
  >>> print(hci_cmd)
  <HCI_COMMAND opcode=0x0c03 ogf=HOST_CTL(0x03) ocf=RESET(0x03) request_data= response_data=>
  >>> hci_cmd.to_buffer()
  b'\x03\x0c\x00'        
  >>>

Building of HCI Packets:

  MicroPython v1.8.7-79-g221f88d-dirty on 2017-01-26; PYBv1.1 with STM32F405RG
  Type "help()" for more information.
  >>> from bluetooth_low_energy.protocols.hci import cmd
  >>> hci_cmd = cmd.HCI_COMMAND(ogf=cmd.OGF_LE_CTL, ocf=cmd.OCF_LE_RAND)
  >>> print(hci_cmd)
  <HCI_COMMAND opcode=0x2018 ogf=LE_CTL(0x08) ocf=LE_RAND(0x18) request_data= response_data=>
  >>> hci_cmd.to_buffer()
  b'\x18 \x00'
  >>>

Control BLE chips see 'examples'

Software

Currently implemented full HCI commands from STSW-BLUENRG-DK 2.0.2

User manual BlueNRG-MS Bluetooth® LE stack application command interface

Programming manual BlueNRG, BlueNRG-MS stacks programming guidelines

Hardware

Currently supported module STMicroelectronics SPBTLE-RF

Availabe breakout board:

Fritzing for breakout: MicroPython_SPBTLERF_Breakout_v01_mod.fzz

Gerber for breakout: MicroPython_SPBTLERF_Breakout_v01_mod.zip

If have interest into preassembled breakout board contact me at damianomazzella@gmail.com

External dependencies

Only for examples: 'logging' already available into folder 'micropython-lib' of this repository

Install 'bluetooth_low_energy' into the pyboard

To enable the functionality you need to freeze the package 'bluetooth_low_energy', to do this, copy the package 'bluetooth_low_energy' into 'micropython-lib'.

Navigate to the folder containing the repository micropython:

    $ cd stmhal
    $ make FROZEN_MPY_DIR="~/uble/micropython-lib"

Examples

    basic: print BlueNRG FW versions
    bluest_protocol: implements the BlueST protocol usable for test with 'ST BlueMS' app
    sensor_demo: usable for test with 'BlueNRG' app
    firmware_update: update SPBTLE-RF firmware (see README)

bharathi26 / uble