November 13th, 2025

===============================================================================
BrainStem2® Support Package Release
===============================================================================


BrainStem Release 2.12
===============================================================================

The BrainStem 2.12.x release adds support USBCSwitchPro and the USBExt3c. 

* Breaking Changes
  * resetEntityToFactoryDefaults has been moved to the Entity base class.
  * The following APIs have been deprecated and replaced:
    * PortClass::resetVbusAccumulatedPower -> PortClass::setVbusAccumulatedPower
    * PortClass::resetVconnAccumulatedPower -> PortClass::setVconnAccumulatedPower
  * C++: Entity Classes now have virtual destructors
  * C++, CCA, .NET: The input parameter for "set" functions are now all const
  * C++, CCA, .NET: The bEnable parameter for I2C::setPullup is now uint8_t
  * CCA: Function signature for powerdelivery_packDataObjectAttributes has changed
  * CCA: Function signature for powerdelivery_unpackDataObjectAttributes has changed
  * CCA: Function signature for module_sDiscover has changed
  * CCA: i2c_write and i2c_read now use unsigned char for address and buffer length parameters
  * Python: PowerDelivery.packDataObjectAttributes is now static
  * Python: PowerDelivery.unpackDataObjectAttributes is now static
  * Python: Function signature for findModule has changed. Default parameter "aether_config" is now "network_interface"
  * Python: Function signature for findFirstModule has changed. Default parameter "aether_config" is now "network_interface"
  * Python: Function signature for findAllModuesAll has changed. Default parameter "aether_config" is now "network_interface"
  * C++, .NET, Python: The UART field in the USBHub3c module is now an array
  * Windows Static Linking: Toolset has been upgraded to VS2022(v143).
  * Windows HubTool is now 64 bit.
  * Power Delivery Logging: Structure was modified. 2.12 and 2.11 are not compatible


Drivers
===============================================================================

Since release 2.2, BrainStem users no longer need to install drivers on any of our
supported platforms. Windows 7 users will still need to Update the device driver
software for their BrainStem devices, via the BrainStem.inf file that we provide.


BrainStem Development Kit Dependencies
===============================================================================

* Windows:
  BrainStem libraries depend on the Microsoft Visual Studio 2015 C++ Redistributable.
  Typically this package is already install; however, on a fresh install of Windows
  they might not be present yet.  The version you require will depend on what version
  of libraries you will be using.
  Acquiring the packages can be done in the follow ways.
   * Microsoft Website: https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist
   * Direct x86 download: https://aka.ms/vs/17/release/vc_redist.x86.exe
   * Direct x64 download: https://aka.ms/vs/17/release/vc_redist.x64.exe
   * Googling: "Microsoft C++ Redistributable" and following a valid Microsoft result.
  A system restart is typically required after installing this package.
* Mac:
  * N/A
* Linux:
  * N/A


HubTool Dependencies
===============================================================================
* Windows:
  * N/A
* Mac:
  * N/A
* Linux:
  * Red Hat:
    * RHEL8:
      * dnf install qt5-qtbase-gui
    * RHEL9:
      * dnf install qt6-qtbase-gui
  * Ubuntu:
    * >= 24.04:
      * apt install qt6-base-dev
    * <  24.04:
      * N/A


Reference Documentation
===============================================================================

Reference documentation that includes an overview of the BrainStem
architecture, getting started guides and API interfaces for all
programming environments included within this SDK can be found at:

https://acroname.com/reference/


BrainStem Package Folder Structure
===============================================================================

The development directory contains all the files you need to include
when developing an Acroname BrainStem device application. Regardless of the
platform you are running, all you need is to place the BrainStem .so, framework,
or dll in a location your application can find (system runpaths, or project
defined ones). For Mac OS users, the framework includes all of the headers
you will need. Linux and Windows users only need to add the lib folder into
project header search paths.

* Drivers (Windows and Linux) - BrainStem USB drivers.
   * amd64, ia64, x86 - Platform specific files.
   * brainstem.inf - Windows7 inf files for install of WinUSB driver.
   * vcomm.inf - Windows7 inf file for installing built in vcomm drivers.

* api - Libraries, and header files.
   * lib - Shared Library and header includes.
   * examples - Examples in C/C++/Python.
   * python - Python BrainStem wheel.

* cli - Tools directory.
   * Updater - Command line tool for updating firmware on BrainStem devices.
   * AcronameHubCLI - Command line tool for controlling hub products.

* docs - Documentation for the SDK.
   * API_Reference.pdf - API reference for the BrainStem 2 API.
   * release_notes - This document of release notes.

* legacy - Unsupported, but distributed, portions of the BrainStem SDK.


BrainStem 2.12.3
===============================================================================
* New Features:
  * USBCSwitchPro, USBExt3c: 
    * Added mDNS discovery support
  * USBHub3c, USBCSwitchPro, USBExt3c: 
    * Added RESTSerial support (REST API through RS232 port).
  * USBHub3c, USBExt3c: 
    * Added ability to limit the maximum PD protocol revision in use.
    * Added ability to enable/disabled Fast Role Swap.
    * Improved USB PD and Type C Compliance
    * Added override and changed data role behavior for connected ports with matching data roles
  * USBExt3c:
    * BYOD support
    * Updated VS6320 firmware
  * HubTool: 
    * Added additional RDO controls - USB Suspend and Capability mismatch
    * USBCSwitchPro:
      * PD Plot <-> PD Log click correlation
      * Plot improvements - Auto Decimation and Plot slicing
      * Larger sparklines
      * Add Mux side CC1/2 Voltage and Vbus Current plots
    * PD Decoding: Added MIPI and NIDnT decoding
* Bug Fixes:
  * Python: Clean Ctrl + C exiting
  * LabVIEW: sDiscover signature fix
  * HubTool:
    * Broken PD Log import button
    * aEther connection dropout
    * get/set hostname for USBCSwitchPro and USBExt3c
  * MTMLoad1: getResistance now returns the correct value
  * USBExt3c: 
    * Overall USB link stability
    * Updated VS6320 firmware
    * Improved Power budgeting
  * USBCSwitchPro: fixed partial flip
* Dropped support for Ubuntu 16.04 (EOL).


BrainStem 2.12.2
===============================================================================
* New Features:
  * Updater: Added cli arguments for http/https control.
* Bug Fixes:
  * HubTool:
    * Windows: Fixed various issues related to DPI scaling including checkbox issues.
    * REST interface port changes not honored
    * Expanded control of plot filters
    * Better synchronization/updating of PD Rules and editor.
    * Better flip controls for USBCSwitch.
    * Improved device discovery cleanup and management.
    * HDBaseT power form and state fixes.
  * USBExt3c:
    * PD Rule enable/disable
  * CCA API (affects python and LabVIEW APIs):
    * I2C speed was not being honored.
  * USBCSwitchPro and USBExt3c
    * REST Server:
      * Long entity strings were not being parsed correctly
      * Subindex support
    * Legacy API bit masking bugs
  * Missing .NET module file for USBExt3c


BrainStem 2.12.1
===============================================================================
* New Features:
  * USBCSwitchPro
    * Digital input/output support
  * USBHub3c 
    *Last Connected data role behavior
  * USBExt3c 
    *Last Connected data role behavior
    * Digital input/output support
  * Python Examples:
    * PD RDO testing CLI
    * USB Speed testing CLI
  * HubTool: 
    * Added "Raw" column for PDO's
* Bug Fixes:
  * HubTool:
    * Updated Software Features T-Codes for USBExt3c and USBCSwitchPro
    * PDLogging Software Feature detection on USBExt3c and USBCSwitchPro
    * PDLogging import button
    * PDLogging Export failure notification
    * Sparkline timestamp drift alignment
  * USBCSwitchPro:
    * REST Server stability and reliability. 
    * Mux Enable/Disable
    * Alt mode USB 3.1 Enable/Disable
    * Split Mode configuration caching
  * USBExt3c
    * REST Server stability improvements. 
    * HDBaseT link stability improvements
  * Expanded Hardware ID detection
  * Improved Updater success rate
* New API's:
  * DigitalClass
    * getValue
    * setValue
    * getLinkChannel
    * setLinkChannel


BrainStem 2.12.0
===============================================================================
* New Product Support:
  * USBCSwitchPro support
  * USBExt3c support
* New Features:
  * Windows: Port mapping support for SuperSpeedPlus
  * BrainStem: Multiple transport support of the same device.
  * Python: Result object comparison support.
* Bug Fixes:
  * Mac: Port Mapping support for Tahoe(macOS 26)
  * Python: fixed network/aEther support for findAllModules
* New API's:
  * Ethernet Class
  * HDBaseT Class
  * PoE Class
  * PortClass
    * getSBU1Voltage
    * getSBU2Voltage
    * getCC1Voltage
    * getCC2Voltage
    * getCC1Current
    * getCC2Current
    * getCC1AccumulatedPower
    * setCC1AccumulatedPower
    * getCC2AccumulatedPower
    * setCC2AccumulatedPower
    * setVbusAccumulatedPower
    * setVconnAccumulatedPower
  * PowerDeliveryClass
    * getLinkState
    * getAttachTimeElapsed
    * getPowerRoleCapabilities
    * getDataRoleCapabilities
  * UARTClass
    * setLinkChannel
    * getLinkChannel
    * setStopBits
    * getStopBits
    * setParity
    * getParity
    * setDataBits
    * getDataBits
    * setFlowControl
    * getFlowControl
    * getCapableProtocols
    * getAvailableProtocols
  * EntityClass
    * saveEntityToStore
    * resetEntityToFactoryDefaults
    * loadEntityFromStore


BrainStem 2.11.5
===============================================================================
* Bug Fixes
  * USBHub3c - Power Role Swap and USB PD Stability issue

BrainStem 2.11.4
===============================================================================
* Bug Fixes
  * USBHub3c - Stability and compliance improvements.
    * USB descriptor corruption.
    * Crash when using power supply mode
    * Various Power Role swap bugs.
  * HubTool
    * plist info alignment
    * PDO Rule editor - would clear rules on enabled/disabled
    * Updater - Firmware < 2.10.4 would fail to update.
  * USBHub3p - system errors memory initialization.
* New Features:
  * USBHub3c - CC current limits and even split power mode.


BrainStem 2.11.3
===============================================================================
* Bug Fixes
  * USB endpoint becomes unresponsive and must be power cycled. Affects all LPC products.
  * Fixed context manager for the DFU CLI.


BrainStem 2.11.2
===============================================================================
* Bug Fixes
  * USBHub3c: Re-enumeration works on first try without failing twice
  * USBHub3c: Link Stability
  * Python: Ctrl + C signalling support
  * CCA API: Removal of BrainStemLog.txt generation on Windows.
  * HubTool: USBHub3c had inverted logic for USB Suspend and USB Communications possible.
  * Updater: Improved updating speed for iMX products.
  * HubTool: Fixed graph mapping for USBHub3p and USBHub2x4 pop out plots.
  * HubTool: Added support for Ubuntu 24.04
  * HubTool: Handle time drift between OS and device.
  * Increased API transaction time for all LPC devices.
* New Features:
  * HubTool: Improved "Take Screenshot" for USBHub3c
  * HubTool: Auto Save PD Logs
  * Python: New CLI examples: DFU CLI, PD Requests
  * Python: Added missing version API's


BrainStem 2.11.1
===============================================================================
* Bug Fixes
  * Python: Incorrect signature in streaming example.
  * HubTool: Resolved crash from USBHub3c form destruction.
  * USBHub3c: Added maximum retries for PD discovery (Improves interoperability with non compliant devices).
  * Updater: Recovery issue related to HID driver on MacOS.


BrainStem 2.11.0
===============================================================================
* New Features:
  * Python API: Added streaming and PD Logging capabilities
  * C++ API: Created PD Logging utility class.
  * CCA API: New C API wrapper (C++ to C Abstraction - CCA)
  * LabVIEW API: Port Mapping, streaming and PD Logging capabilities.

BrainStem 2.10.8
===============================================================================
* New Features:
  * USBHub3c: Added LED Max brightness API
* Bug Fixes:
  * .NET - Added USBSystem and Port Entities to all hub products.
  * USBHub3c: Align behavior between Port::setEnabled and Port::setMode
              Particularly in regards to ports saved in the off state.
  * USBHub3c: Fixed PDEvent spamming (VConn Enable/Disable).
  * AcronameHubCLI: Fixed indexing issue with --upstream parameter.
  * HubTool: Improved scaling issues regarding DPI support on Windows.
  * HubTool: Handle large amount of PD packets gracefully.
  * HubTool: Only allow power accumulation on devices that support it.

BrainStem 2.10.7
===============================================================================
* New Features:
  * Added Get CC State to Port for USBHub3c
  * Added Debian 12 distribution
  * Added ability to change directory for Update files in HubTool
  * Added capacities and direct UEI calls to .NET
* Bug Fixes:
  * Fixed getCableFlip on USBCSwitch
  * Fixed BrainStem Network Discovery on HubTool

BrainStem 2.10.6
===============================================================================
* Bug Fixes:
  * Mac signing/notarization

BrainStem 2.10.5
===============================================================================
* New Features:
  * Added VBUS Power Accumulation to USBHub3p and USBHub2x4
  * Added support for USB-C Switch with Isolators
  * Added Max Datarate APIs for USB2 and USB3 on USBHub3c
* Bug Fixes:
  * USBHub3p: Upstream swap issue
  * HubTool: Scaling fix
  * Python: Fixed typo Baudrage to Baudrate

BrainStem 2.10.4
===============================================================================
* Bug Fixes:
  * HubTool: Backwards compatibility issue with 2.9.x firmware and 2.10.x software.
             Related to get/setName adjustments for the USBHub3p and USBHub2x4.

BrainStem 2.10.3
===============================================================================
* New Features:
  * LabVIEW:
    * Added aEther support.
    * Version decoding vi's.
    * Miscellaneous missing Port and UART vi's.
  * HubTool:
    * Aligned Port and System naming with get/setName API's.
    * Offline PD log importing.
    * Added reset to defaults for USBHub3p and USBHub2x4.
    * Added "Windowed" mode which allows individual windows per device.
  * USBHub3c: Added Upstream split mode.
  * MTMLoad1: Added constant power and resistance modes.
  * Updater: Added ability to override the default file location.
* Bug Fixes:
  * HubTool: Improved BrainStem I2C discovery, verbiage alignment and general layout polish.
  * ReflexLoader: fixed connection issues with aEther.
  * Updater: Usage updates.
  * Added documentation about Windows C++ Redistributable dependencies.
  * USBHub3c: Fixed where enable/disable calls didn't work when using the control port only.
  * MTMLoad: Small current stability.
  * USBHub3p: Bumped saved settings location to prevent burnout.
  * Windows: Better tolerance for BrainStem communication when computer is put to sleep.
  * LabVIEW: Fixed x64 deployment (missing dlls).

BrainStem 2.10.2
===============================================================================
* New Features:
  * Increase minimum MacOS version to 10.15 (Catalina)
  * AcronameHubCLI: Voltage and current options
* Bug Fixes:
  * USBHub3c: VConn / PR Swap priority correction.
  * USBHub3c: PD stack stability
  * BrainStem: Memory management and link stability

BrainStem 2.10.1
===============================================================================
* New Features:
  * Add I2C Speed set and enumeration delay functionality for USBHub3c
  * USBHub3c USB PD changes to support PD r3.1 v1.8 (PDOs, Disable Battery Cap,
    Add VDM Minor Version)
* Bug Fixes:
  * Fix USBHub3c LED indication in HubTool for SuperSpeed+ upstream
  * Fix USB C Switch Split mode configuration in HubTool
  * Fix store unload memory issues during buffer overflow
  * Fix USBHub3p enumeration delay

BrainStem 2.10.0
===============================================================================
* New Features:
  * Added multi-process support and network availability.
  * .NET API adds the ability to directly create Entity Objects
  * HubTool: Expand PD Logging to include VID Lookup and Bit Overrides
  * Implemented getName() and setName() for System and Port classes
  * Added USBSystem and Port entities to: USBHub2x4, USBHub3p
  * Updated GetHardwareVersion for USBHub3p and USBCSwitch to be readable values
  * (Breaking Change) Changed Splitmode CC interface to allow for multiple mux
    outputs simultaneously.
  * USBHub3c: Automatically performs Discover Identity messages
* Bug Fixes:
  * Fix issues with saving to prevent corruption and allow more settings to be saved.
  * (Breaking Change) Remove partner parameter from setRequestDataObject
  * LabVIEW: USBCSwitch - setMuxChannel is now correctly wired.
  * (Breaking Change) USBHub2x4 String Descriptors are now present
  * USBHub3c: Properly handle a back powered port.
  * USBHub3c: Add a hard reset to all downstream ports when upstreams enumerate
  * Port Mapping now works on Apple Silicon devices.
  * Fix Updater to allow indirect loading of firmware via a BrainStem router
  * (Breaking Change) Commonize use of mode and state throughout all hub models.

BrainStem 2.9.29
===============================================================================
* New Features:
  * USBHub3c: Power Delivery (PD) event logging.
  * HubTool: USBHub3c - PD logging import and PD events.
* Bug Fixes:
  * USBHub3p: Improved short circuit handling.
  * Linux: Simplified udev process.
  * HubTool: USBHub3p - Changed port order to align GUI to device.

BrainStem 2.9.28
===============================================================================
* New Features:
  * USBHub3c: Vendor Defined Message (VDM) support
  * HubTool: Data routing behavior for flip/UOC support
  * BrainStem: Get/Set UEIBytes
* Bug Fixes:
  * BrainStem: Memory leak in link layer
  * Windows: Port Mapping
  * USBHub3c: Improved PD compliance

BrainStem 2.9.27
===============================================================================
* New Features:
  * USBCSwitch: Made mux port and enable state saveable.
* Bug Fixes:
  * MTMDAQ2: Fixed updating bug.
  * USBHub3c: Fixed device disconnect bug.
  * HubTool: UI and CPU performance improvements.
  * BrainStem: Disconnect/reconnect issue related to I2C networking.

BrainStem 2.9.26
===============================================================================
* New Features:
  * HubTool: USBCSwitch - added SBU plots for devices that support it.
  * HubTool: USBHub3c - Added ability to request extended capabilities.
* Bug Fixes:
  * HubTool: Firmware Management - Improved UI experience.
  * HubTool: USBCSwitch - Improved plots and UI experience.
  * HubTool: Miscellaneous UI improvements.
  * USBHub3c: Improved 5V safe approval and increased to 5.1 VDC
  * USBHub3c: Fixed negotiation of APDO rules in constant current mode.
  * Port Mapping: Various bug fixes.

BrainStem 2.9.25
===============================================================================
*New Features
  * BrainStem: Added API functionality to map USB descriptors of Acroname hub ports.
  * HubTool: Added UI elements to show off USB descriptor mapping.
  * USBHub3c: Added more default PDO's
* Bug Fixes:
  * HubTool: Fixed erroneous set calls and general beautification improvements.
  * USBHub3c: Fixed lockup issue related to power management.

BrainStem 2.9.24
===============================================================================
*New Features
  * USBHub3c: Add limited RS232 support.
  * USBHub3c: Added upstream swapping options.
* Bug Fixes:
  * USBHub3c: Miscellaneous APDO, RDO and Control port fixes.
  * USBHub3c: Improved BrainStem networking.
  * USBHub3c: Improved live loader.

BrainStem 2.9.23
===============================================================================
* Bug Fixes:
  * Python: Fixed library loading for deployments <= 18.04
  * HubTool: Allow updating of USBHub3c when already up to date (for Software Features).

BrainStem 2.9.22
===============================================================================
*New Features
  * Added Ubuntu 22.04 support
  * Dropped Ubuntu 14.04 support
* Bug Fixes:
  * USBHub3c and USBCSwitch: Fixed saved settings bug.

BrainStem 2.9.21
===============================================================================
*New Features
  * HubTool: Added firmware management (UpdaterGUI).
  * Added PDF version of documentation to all deployments.
  * Python: Added BrainStem whl to pypi
* Bug Fixes:
  * USBCSwitch: Fixed factory reset logic.

BrainStem 2.9.20
===============================================================================
*New Features
  * Renamed StemTool to HubTool
* Bug Fixes:
  * USBHub3c: Improved PD negotiation for RDO removal.
  * USBHub3c: Improved boot loader to maintain heartbeat during update.
  * USBHub2x4: Resolved port lockup issue.
  * Firmware (LPC): Improved I2C stability.
  * USBHub3p: Fixed DCP mode.
  * USBHub3p: Fixed descriptor errors for alternate hardware.
  * Python API: Fixed setDataHS1Enabled.

BrainStem 2.9.19
===============================================================================
* New Features:
  * USBHub3p: Added alternate hardware support.
  * USBHub3c: LED/Fan self-testing
* Bug Fixes:
  * USBHub3p: Improved enumeration detection
  * USBHub3c: Recovery from PD source
  * USBHub3c: Port lockup from VConn enable.
  * MTMDAQ2: Zero value glitches in ADC readings.

BrainStem 2.9.18
===============================================================================
* New Features:
  * StemTool (USBHub3c): New plot window.
  * StemTool (USBHub3c): Added PD message plot correlation.
  * StemTool (USBHub3c): Added time formatting for PD logging (app, device, system).
  * USBHub3p: Improved thermal and input power protections.
* Bug Fixes:
  * USBHub3c: Improved error recovery for over power conditions
  * StemTool (USBHub3c): LED Indicators and other general UI improvements.

BrainStem 2.9.17 - No Software changes
===============================================================================
* Bug Fixes:
  * USBHub3c: PD Compliance updates
  * USBHub3c: Stability and internal use adjustments.

BrainStem 2.9.16
===============================================================================
* Bug Fixes:
  * USBHub3c: Fixed connection bug related to heartbeats
  * USBHub2x4: Fixed issue where device wouldn't reset correctly
  * StemTool: Minor form naming issue.

BrainStem 2.9.15 - No Software changes
===============================================================================
* USBHub3c: Firmware adjustments for internal use.

BrainStem 2.9.14
===============================================================================
* New Features:
  * StemTool: USBHub3c form replicates LED indicators
  * StemTool: Added error code text
  * USBHub3c: Added DR_Swap and PPS_Status messages.
  * USBHub3p: Made upstream mode saveable.
* Bug Fixes:
  * USBHub3c: Delayed PS_READY message until voltage stabilizes.
  * StemTool: Ubuntu 14.04 x86_64 would fail to launch
  * USBHub3p: Fixed bugs in savable port state along with downstream port speed.

BrainStem 2.9.13
===============================================================================
* New Features:
  * LabVIEW API: Added Port, USBSystem and PowerDelivery API's
  * USBHub3c: Added USB High Speed boost API's
  * USBHub3c: Added support for extended messages.
* Bug Fixes:
  * StemTool: General UI improvements.
  * USBHub3c: QualComm, enumeration, voltage droop with high load.

BrainStem 2.9.12
===============================================================================
* New Features:
  * PDLogging: Added extended messages
* Bug Fixes:
  * HubTool: Version control for "Auto VBus Toggle"
  * StemTool: RDO control fixes
  * BS Networking: Heartbeats for CHub to CHub.
  * PDLogging: Incorrect port index
  * Streaming: Bit adjustments

BrainStem 2.9.11
===============================================================================
* New Features:
  * USBHub3c: Add power accumulation.
  * USBHub3c: BrainStem Networking support
* Bug Fixes:
  * MTM: BrainStem Networking (broken in 2.9.10)
  * USBHub3c: Super speed for M1 macs
  * USBHub3c: Check communications capable flag before data role swap.
  * USBHub3c: Improved PD negotiations

BrainStem 2.9.10
===============================================================================
* C++: Added Streaming interface. (USBHub3c only)
* PDLogging: PDO, RDO and VDO decoding
* USBCSwitch: Voltage and Current measurement improvements.

BrainStem 2.9.9
===============================================================================
* .NET: Added support for USBHub3c.
* StemTool: Added logging and pop-out plots for the USBHub3c.
* StemTool: Plotting improvements and other bug fixes.

BrainStem 2.9.8
===============================================================================
* Linux: Fixed deployment issue.
* StemTool: Miscellaneous bug fixes.

BrainStem 2.9.7
===============================================================================
* USBHub3c: Improved power budgeting, fan and thermal protection algorithms
* USBHub3c: Power Delivery and quick charge bug fixes
* Python: Added all Acroname binaries to whl file (Universal whl)
* StemTool: Added cable information and screenshot feature.
* StemTool: Miscellaneous bug fixes and spelling corrections.

BrainStem 2.9.6
===============================================================================
* Initial release of PD Logging
* StemTool: Fixed crash related to USBHub3c
* Added Apple silicon support
* AcronameHubCLI: Added USBHub3c support

BrainStem 2.9.5 - No Software changes
===============================================================================
* USBHub3c: Firmware adjustments for internal use.

BrainStem 2.9.4
===============================================================================
* USBHub3c: Added new behaviors for preferred port policy, including auto.
* USBHub3c: Fixed power budgeting bugs.
* API: Added SBU voltage and data routing.
* Updater: Added build number support for the USBHub3c.

BrainStem 2.9.3
===============================================================================
* Updater: Improvements for imx recovery, parameter checking and output.
* USBHub3p: Added vbus togging configuration options.
* USBHub3c: Added USB Entity legacy support

BrainStem 2.9.2
===============================================================================
* Updater: Fixed bug related to offline updates.

BrainStem 2.9.1
===============================================================================
* USBHub3c: Updates to support licensed features.
* USBHub3c: USB stability fixes.
* USBHub3c: Added event logging.
* USBHub3c: Added Power Budgeting and related API calls.
* Updater: Updates to support licensed features as well as USBHub3c recovery support.
* StemTool: Added VBUS Validation support and disabling of unsupported features.
* ReflexLoader: Added support for EEPROM and SD stores.

BrainStem 2.9.0
===============================================================================
* USBHub3c: Release of new module
* API: Added Power Delivery, Port and USBSystem Entities (C++ and python only)
* Removed deprecated functions from 2.8.x release
* StemTool: Rearranged layout
* C++: Cleaned up namespace.

BrainStem 2.8.9
===============================================================================
* USBHub2x4: Fixed upstream boost errors.
* LabVIEW API: Fixed incorrect function signatures for equalizer entity.
* API: Added length checking to I2C entity.
* API: Deprecated Temperature::getTemperature in favor of Temperature::getValue.
* AcronameHubCLI: Added executable to deployment (bin folder) and configured
                  static linking for the CLI example.

BrainStem 2.8.8
===============================================================================
* USBHub2x4: Improve VBUS and VInput measurement filtering.
* USBHub2x4: Fixed intermitent firmware update issue.
* HubTool: Fix issue where USB2x4 current limits were not applied when requested.
* Python Readme: Updated installation, and documentation cleanup.

BrainStem 2.8.7
===============================================================================
* MTMIOSerial: Fixed bug in getPortState call
* USBHub2x4: Aligned getPortStat with datasheet.
* HubTool: BigSur adjustments and updated open source manifest.

BrainStem 2.8.6
===============================================================================
* HubTool: Added device saveable hub and port lables.

BrainStem 2.8.5
===============================================================================
* Brainstem Library: Fix issue where USB transaction timeouts on Windows that
            would result in intermittent link status and intermittent communication
            failures, most notably indicated by an erratic heartbeat LED on some modules.
* Firmware: Fixed issue with long term stability of uptime,
            max temperature and system saved parameters.

BrainStem 2.8.4
===============================================================================
* S79 Firmware: Fix issue with some xHCI host controllers where enumeration of
                a downstream port and device would cause the host controller to crash.

BrainStem 2.8.3
===============================================================================
* Updater: Fixed bug in recovery
* Python API: Fixed python2 compatibility issue.
* HubTool: Added device log fetching (S79)

BrainStem 2.8.2
===============================================================================
* USBHub3p: Fixed enumeration delay for port 0
* HubTool: Fixed system information for when multiple hubs are connected.
* StemTool: Integrated HubTool into StemTool.
            Fixed MTM module insertion into device tree.
* Updater: Added additional error checking.
           Fixed debug print error in Windows.

BrainStem 2.8.1
===============================================================================
* MTMDAQ2: Added bulk capture.
* MTMDAQ2: Bug Fix: Range change glitch
* MTMPM1: Bug Fixes: Voltage rise with high temperature, voltage spike on
          kelvin sense enable.
* .NET API: USBClass::getPortError() and USBClass::getCableFlip() fix.

BrainStem 2.8.0
===============================================================================
* MTMLoad1: Debut of new module.
* Rail API expansion
* Added examples
* MTMDAQ2: Added Uptime logging
* MTMPM1: Fixed overcurrent bug on Rail 1
* Python: Separated Entity and Module classes into different files.

BrainStem 2.7.15
===============================================================================
* MTMPM1: Improved handling of inrush current.

BrainStem 2.7.14
===============================================================================
* MTMPM1: Fixed over current bug on rail 1.
* MTMPM1: Implemented operational state elements for rail 1.
* USBHub2x4: Improved power controller alert notification.
* MTM-EtherStem: Added setVoltage implementation.
* Updated licensing information.

BrainStem 2.7.13
===============================================================================
* USBHub3p: Improved voltage measurement accuracy.
* USBHub3p: Improved back-voltage recovery.

BrainStem 2.7.12
===============================================================================
* USBHub3p: Fixed enumeration issue when device is not powered
* HubTool: Fixed memory leak associated with data logging.

BrainStem 2.7.11
===============================================================================
* USBHub3p: Fixed upstream swapping bug from 2.7.10.
* HubTool and StemTool: Added version to title bar.

BrainStem 2.7.10
===============================================================================
* USBHub2x4 and USBHub3p: Multiple fixes addressing: enumeration, enumeration
                          delay and other internal settings.
* USBCSwitch (redriver): Bug fixes and added additional settings associated with
                         the USB 2.0 redriver.
* StemTool: Fixed scaling issues in Windows.
* Added new deployments: Ubuntu 16.04 arm64v8
                         Ubuntu 18.04 arm64v8
                         Ubuntu 19.04 x86_64
* Miscellaneous internal fixes.

BrainStem 2.7.9
===============================================================================
* USBHub2x4: Fixed bug in port error handling.
* HubTool: Plotting updates and fixes.
* Added GUI applications to Ubuntu 18.04 deployment.
* .NET API: Added strong naming to assemblies.

BrainStem 2.7.8
===============================================================================
* USBCSwitch: Added missing redriver configurations.
* Added missing Signal Entity to the C++ and C# API's
* USBHub2x4: Fixed bug related to fast power cycling of downstream ports.
* USBHub2x4: Applied fix to correctly apply downstream port profiles on boot.
* USBHub2x4: Linked downstream enumeration delay to upstream connections.

BrainStem 2.7.7
===============================================================================
* USBCSwitch: Fixed firmware bug affecting the USB 2.0 redriver
* Updated and expanded examples for C++/Python/.NET
* Created Equalizer Entity for LabVIEW Application
* Exposed connectThroughLinkModule in .NET API.

BrainStem 2.7.6
===============================================================================
* Pre-Release of .Net API

BrainStem 2.7.5
===============================================================================
* USBHub3p: Fixed issue where saved settings were causing port 7 errors.
* USBHub2x4: Fixed issue where saved settings could cause operational issues.
* MTM-IO-Serial: Fixed issue where saved settings could cause operational issues.

BrainStem 2.7.4
===============================================================================
* USBCSwitch Fix issue where daughter card wasn't being reported properly.

BrainStem 2.7.3
===============================================================================
* USBCSwitch: Fixed issue where mux split was not operating as exepected for certain configurations.
* USBCSwitch: Fixed issue where vbus current measurements were limited to 3.906 amps.
* StemTool (USBCSwitch): Fixed issues with portState values being updated incorrectly.
* USBHub2x4 and USB-MTM-IOSerial: Fixed typos in header defines.
* USBCSwitch: Added Equilizer capability for USBCSwitches with redriver cards.
* BrainStem: Added Equilizer entity.

BrainStem 2.7.2
===============================================================================
* USBHub3+: Fixed issue where incorrect serial number information in the Hub Controllers was causing a device not recognized error on MS windows.
* USBCSwitch: Fixed issue where Mux split would not work when commanding certain configs.

BrainStem 2.7.1
===============================================================================
* Updated documentation for port error bit status in the python help files.
* Updated port error reporting within HubTool for Acroname USB hubs.
* Fixed issue where ReflexLoader application was expecting BrainStem2 .dylib file.
* Stability improvement for MTM-DAQ-2 where calls to set the analog measurement range would  fail with an aErrParse at a low frequency.

BrainStem 2.7.0
===============================================================================
* Refactored USBCSwitch firmware so that it doesn't return aErrBusy.
* Modified the discoverAndConnect function so that it will only connect to a
 device that matches its object type.
* Added calibration to the USBHub3P.
* Added serial number to USBHub3p's USB device descriptors.
* Python Bug fixes: I2C, typo in cffi layer.

BrainStem 2.6.5
===============================================================================
* Fixed bug in USBCSwitch which could result in commands being missed while
  rapidly issuing commands to the USB and MUX entity.  Affect functions will
  now return aErrBusy until the previous command was completed.
* Added cmdSignal to LabVIEW API
* Increased USBCSwitch VBus Sampling.
* Created Ubuntu 18.04 deployment (no Qt)
* Added command line example to deployments.
* Various python connivence function fixes.
* Fixed incorrect Module address of the MTMDAQ2

BrainStem 2.6.4
===============================================================================
* MTM-DAQ-2 Initial release.
* signal entity initial release.
* Add USB Port mode bits to python library.
* Align MTM-DAQ analog ranges.

BrainStem 2.6.3
===============================================================================
* Added Multi-point VBUS to USBCSwitch
* Fixed BrainStem network discovery in Updater.
* Removed execution permissions from header files in Linux distribution
* Fixed bug in usb port state.
* Enabled individual flip for USBCSwitch in StemTool.
* Added muxSplit to LabVIEW API.

BrainStem 2.6.2
===============================================================================
* Fixes an issue with BrainStem networking. RouteToMe was being ignored.

BrainStem 2.6.1
===============================================================================
* Added MUX configuration interface to enable 1:X mapping (default) or splitting
  of interface functionally across various MUX channels (split). This extends
  functionality of S85-USBC-SWITCH
* Updates to StemTool to support MUX configuration functionally on S85-USBC-SWITCH.
* Fixed spurious VBUS glitches on S77-USBHUB-2X4.

BrainStem 2.6.0
===============================================================================
* Adds Python 2/3 compatibility.
* LabVIEW API stability improvements.  (name changes will break backwards compatibility)
* MTM-USBStem FW crash fix

BrainStem 2.5.5
===============================================================================
* Fixed bug with brainstem.analog where the stem would reset when getting a value
  after a setConfig was issued.
* Added missing aDef.c to linux build.
* Adding HubTool package to downloads list.

BrainStem 2.5.4
===============================================================================
* USBHub3+ Stability improvement; Uncommon invalid input voltage caused a fault and
	    loss of power on the downstream ports.
* All BrainStems: Added pullDown config option to Digital entities.
* All BrainStems: Added get/set all digitals command.
* All BrainStems: Added convenience functions for printing errors and model names.

BrainStem 2.5.3
===============================================================================
* USBHub3+ HubTool fixes for updated portState and portError.

BrainStem 2.5.2
===============================================================================
* USBHub3+ portState variable bug fix.

BrainStem 2.5.1
===============================================================================
* Full support for S84-MTM-DAQ-1
* USBHub3P hub firmware recovery bug fix.

BrainStem 2.5.0
===============================================================================
* Full support for S85-USB-C-Switch
* Signed drivers and applications for Windows 10
* System event logging, Uptime counter, and max temperature added to system entity.
* Full support for MTM-DAQ-1
* bug fix: Timer expiration fails with repeating timer after a number of cycles.
* python setVoltage now handles negative values.
* Bug fix: BrainStem SD card slot failing to load or unload slots.

BrainStem 2.4.6
===============================================================================
* Bug Fix: USBCSwitch default settings are now properly written.

BrainStem 2.4.5
===============================================================================
* LabVIEW library.
* Included HubTool in Brainstem development kit.
* Added USBC Switch Python and C++ examples.
* Bug Fix: Inability to clear boot slot configuration.
* Enable keep alive charging on CSwitch when mux is disabled.
* Bug Fix: CC1 and CC2 current and voltage readings are reversed.
* Bug Fix: Fixed typo in USBC-Switch product USB string descriptor.
* Cleaned up python API for USBC-Switch functionality. Added CableFlip.
* Added Linux Ubuntu 16.04 release packages.
* Bug Fix: UART3 on MTM-IO-Serial was enabled by default.
* MTM stems now support reading digital pins when they are in Hi-Z state.

BrainStem 2.4.4 Features and Release Notes
===============================================================================
* USBCSwitch Initial release.
* HubTool Application background (AppNap) improvements on OSX.
* USBHub3p stability improvements.

BrainStem 2.4.3 Features and Release Notes
===============================================================================
* MTM-USBStem analog bug fixes.
* USBHub2x4 voltage measurement improvements.
* StemTool bug fixes, Rail spinbox
* StemTool bug fixes, Icon on MacOS
* USBHub2x4 Linux bug fix
* BrainStem library and QT compatibility improvements on linux

 BrainStem 2.4.2 Features and Release Notes
 ===============================================================================
 * StemTool V2 Release
 * Added Null checks to C++ API
 * Extended example usage for ReflexLoader
 * Removed HB callback and Link Observer functions

 BrainStem 2.4.1 Features and Release Notes
 ===============================================================================
 * Fixed Super speed enable/disable bug
 * Added option to enable/disable the auto retry function when reverse current
   is detected
 * Removed extra Hub endpoints
 * Updated device descriptors in Windows.

BrainStem 2.4.0 Features and Release Notes
===============================================================================
* Renamed MUX entity to UART. Previously, the MUX entity was used by MTMIOSerial
	for enabling and disabling the UART channels. (Breaks backwards compatibility)
* Created new MUX entity for channel selection of the USBCSwitch.
* Added support for new Acroname devices: USBCSwitch and MTMDAQ1.
* Bug and Stability Fixes.
* See above for further details

 BrainStem 2.3.12 Features and Release Notes
 ===============================================================================
* Fixed bug where signed values for voltages and currents were not returned
	properly in python.
* Fixed incorrect I2C error
* Fixed drifting current limit in the USBHub3p
* Improved MTMIOSerial DAC accuracy.

BrainStem 2.3.11 Features and Release Notes
===============================================================================
* Functionality: MTM-PM-1 rail functionality.

BrainStem 2.3.10 Features and Release Notes
===============================================================================
* Functionality: Improved link connection time.

BrainStem 2.3.9 Features and Release Notes
===============================================================================
* Bug Fixes: Stability improvements on MTM-PM-1 Rail 0 SMPS control.

BrainStem 2.3.8 Features and Release Notes
===============================================================================
* Bug Fixes: Stability improvements on MTM-PM-1.

BrainStem 2.3.7 Features and Release Notes
===============================================================================
* Bug Fixes: Stability improvements on USBHub2x4.
* Feature: Save downstream port state on USBHub2x4.
* Documentation: Improved product datasheets.
* Bug fixes: Updater and ReflexLoader utilities.
* Bug fix: Python signaling exception with multiThreaded applications.

BrainStem 2.3.6 Features and Release Notes
===============================================================================
* USBHub3+ Continued stability improvements.
* USBHub3+ re-enabled hub software reset functionality.

BrainStem 2.3.5 Features and Release Notes
===============================================================================
* Signed versions of Windows Applications and libraries.
* HubTool UI improvements
* HubTool Stability improvements
* USBHub3+ Stability improvements

BrainStem 2.3.4 Features and Release Notes
===============================================================================
* Bugfix for Upstream control on USBHub3+

BrainStem 2.3.3 Features and Release Notes
===============================================================================
* HubTool improvements.
   * Plot zooming and adjustment.
   * Save and reset indicators.
* S79 Stability improvements.
* S79 Temperature updates.
* Bug Fix for TCP/IP discover and connect segmentation fault.
* Bug Fix and Output improvements on Updater and ReflexLoader executables.
* Bug Fix for MTM-PM-1 rail 1 over-current latching.

BrainStem 2.3.2 Features and Release Notes
===============================================================================
* USBHub3p firmware fixes: Errors with Hubtool, Input current, mode and state fixes,
  corrected LED’s, power up without host.
* MTMPM1 Firmware fixes: Smoothed Rail0 voltage, Kelvin Sensing polarity
* Documentation Fixes
* Auto address update(host) for Software and Hardware offsets.

BrainStem 2.3.1 Features and Release Notes
===============================================================================
* Added pointer entity to all brainstem devices for accessing the scratchpad
  from the host.
* USBHub3+ initial firmware release.
* StemTool initial release.
* Stability improvements with MTM-PM-1 module.
* Updater stability improvements.

BrainStem 2.3.0 Features and Release Notes
===============================================================================
* Improved Link management.
* Fixed memory leak in Link class.
* Aligned C++ and Python naming conventions (Breaks backwards compatibility).
* Removed the presence of "Link" in most cases from the C++ and python API layers.
* Updated examples and documentation to reflect API changes.

BrainStem 2.2.8 Features and Release Notes
===============================================================================
* MTM-PM-1 New Feature: Rail0 auto mode for switching between linear and switcher+linear mode.
* MTM-PM-1 Rail[0] temperature measurement fixes.
* Fixes to system save functionality on MTM modules.

BrainStem 2.2.7	 Features and Release Notes
===============================================================================
* Added General Call structure which includes new “routeToMe()” function
  for automatically creating BrainStem I2C networks.
* Added “linkDiscoverAndConnect()” function to python API.
* Firmware fixes: Asynchronous call cleanup and other bugs
* Windows improvements for HubToo

BrainStem 2.2.6	 Features and Release Notes
===============================================================================
* Fixed connection issues associated with hardware offsets
* Improved Python Link Connection
* Added ForceRoute to stem link
* MTMPM1: Bug fixes for temperature and current readings
* Documentation updates

BrainStem 2.2.5	 Features and Release Notes
===============================================================================
* Added arc compiler and ReflexLoader tool to bin directory.
* MTM-PM-1: bug fixes.
* RC-Servo implementation for MTM-IO-Serial modules.
* BrainStem2 lib folder updates on MSWindows to support NI TestStand example.
* USBHub2x4 Upstream port switching improvements and fix to downstream enumeration delay.

BrainStem 2.2.4	 Features and Release Notes
===============================================================================
* StemTool GUI Initial release. manage your stem modules from a user friendly UI.
* Digital IO - New Configuration mode to disconnect Digitals (Hi-Z).
* Digital IO - RC Servo configuration and functionality for digital pins.
* Updater Command line tool - Bug fixes and stability enhancements.
* BrainStem 2 firmware - Bug fixes and stability improvements.

BrainStem 2.2.3	 Features and Release Notes
===============================================================================
* TCP/IP fallback IP address added (192.168.44.42)
* Improved Rail functionality for MTM-PM-1 revision D.
* Improved Firmware Updater reliability.
* I2C speed control setting, and bug fix for I2C bus 1.
* BrainStem connect and disconnect reconnect behavioral improvements.
* Python, C, C++ Bug Fixes
* Firmware bug fixes for soft reset behavior, and responsiveness.

BrainStem 2.2.2 Features and Release Notes
===============================================================================
* Python consistency bug fix for reconnect call, return values are now consistently error
  values.
* Updated documentation and functionality for bulk capture call in BrainStem2
* MS Windows backwards compatibility fix for USBHub2x4 discovery.

BrainStem 2.2.1 Features and Release Notes
===============================================================================
* Python bug fix; Resolves inability to connect with serial number.
* Python documentation, and modules; Updated MTMIOSerial and MTMPM1 modules docstrings.
* C++ bug fix; Resolve issue with railClass causing segmentation faults on some systems.
* Updater Output; Updated out put removes Success error message.

BrainStem 2.2.0 Features and Release Notes
===============================================================================
* BrainStem C++ API updates.
* Firmware extensions for Windows WinUSB support.
* New Updater command line tool.
* 64bit python wheel for Windows machines.
* stability enhancements and bug fixes for MTM Modules.
* Packet traffic logging for Debugging.
* Extended linkspec to include model information.
* Full “Driverless” support on Windows through WinUSB drivers.
* MTMIOSerial switched to use cmdUSB, from cmdMU

BrainSTem 2.1.5 Features and Release Notes
===============================================================================
* BrainStem driver updated to WinUSB for MS Windows OS.
* MS Windows 8.1 and 10 support.
* Apple Mac OS 10.11 El Capitan support.
* Bug fixes for C/C++, Python, and BrainStem firmware.
* Python classes now include Constant definititions and updated docstrings.

BrainStem 2.1.4 Features and Release Notes
===============================================================================
* Additional controls for Module offsets, and adjustment of module base addresses.
* software control of I2C bus pullups on MTM stems.
* USBHub2x4 improvements, software control of SDP vs CDP downstream ports.
* HubTool UI addition for SDP vs CDP downstream port mode.
* C++ SetLink now returns errors when unsuccessful.
* Python Library bug fixes.

BrainStem 2.1.3 Features and Release Notes
===============================================================================
* Python library bug fixes.
* Python library install moved to wheel distribution.
* MTMIOSerial module and MTMPM1 module now support rail OperationalState.
* Analog Bulk Capture bug fixes.
* Added App and Clock entities to python library modules.
* Added slot loading and unloading to python library.

BrainStem 2.1.2 Features and Release Notes
===============================================================================
* Python reconnect bug fix, improves reconnection to a stem.
* Updated discovery process to check on all interfaces, resolves issues with
 multi interface boxes not discovering connected Ethernet stems.
* Updated list of module types to include MTMUSBStem and MTMEtherStem.
* Added useful constant definitions in module headers or C++.

2.1.1 Features and Release Notes
===============================================================================
* I2C was missing from stem.py module initialization.
* Updated python link.Spec to provide consistent information.
* Updated Python readme.
* Updated python brainstem example.
* Fixed issue with certain entities in python not returning results.
* Updated linux driver install, to fix an issue where discover was not finding
  all modules.

2.1.0 Features and Release Notes
===============================================================================
* Major python library refactor, improves portability, reliability, and reduces
  complexity.
* Updated python setuptools install. Users will need setuptools in their python
  environment.
* New I2C entity to allow communication with third party devices over I2C (beta phase).
  available via python and C++ API’s. Requires updated firmware for modules.
* Updated documentation at http://www.acroname.com/reference
* Small bug fixes, and stability improvements.

2.0.3 Features and Release Notes
===============================================================================
* BrainStem Model definitions added to ProtocolDefs header.
* HubTool discriminates and only connects to USBHub2x4 devices.
* HubTool source distribution made available under LGPL
* HubTool stand alone executables bundled with Linux and Windows packages.
* Bug fix: Potential double free removed as well as improved link connection and
	   disconnection behavior.
* Updated enumeration delay to use millisecond resolution. Rather than indexed setting.
* Bug Fix: USBHub2x4, improved stability of Port power controllers.

2.0.2 Features and Release Notes
===============================================================================
* HubTool - UI for interacting with Programmable hubs.
* C++ Example - Example code for controlling the hub programmatically.


Enjoy!

The Acroname Team
