@verbatim
******************************************************************************
*
* Portions COPYRIGHT 2017 STMicroelectronics
*
* @file st_readme.txt
* @author MCD Application Team
* @brief This file lists the main modification done by STMicroelectronics on
* LoRa for integration with STM32Cube solution.
* For more details on LoRa implementation on STM32Cube, please refer
* to UM2073 "STM32 LORA01 software expansion for STM32Cube "
******************************************************************************
* @attention
*
* © Copyright (c) 2017 STMicroelectronics International N.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted, provided that the following conditions are met:
*
* 1. Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of other
* contributors to this software may be used to endorse or promote products
* derived from this software without specific written permission.
* 4. This software, including modifications and/or derivative works of this
* software, must execute solely and exclusively on microcontroller or
* microprocessor devices manufactured by or for STMicroelectronics.
* 5. Redistribution and use of this software other than as permitted under
* this license is void and will automatically terminate your rights under
* this license.
*
* THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
* RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
* SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
@endverbatim
### V1.1.2/08-September-2017 ###
===============================
+ Implements LoRa Mac 4.4.0 release from Semtech/StackForce
https://github.com/Lora-net/LoRaMac-node/tree/f42be67be402a40b3586724800771bfe13fb18e6
+ AckTimeoutRetriesCounter must be reset every time a new request (unconfirmed or confirmed) is performed.
+ Added verification for the power parameter in order to check that it is greater or equal to 0.
+ Enhancement for regions without FSK modulation support.
+ Bug fix for RX window 2 in class c mode.
+ AdrAckReq bit must be set to false as soon as we reach the lowest datarate.
+ MacCommandsBufferIndex must be reset when the mac commands are being sent on port 0.
+ Fixed RegionCommonSetBandTxDone in order to also update band->LastTxDoneTime when performing the Join procedure.
+ Added verification of payload size for Unconfirmed and Confirmed messages depending on Dwell time.
+ Added missing Rx1 timeout handling.
+ Updated all regions to use MAX output power by default.
+ Merge remote-tracking branch 'origin/develop' into develop
+ Bug fix in KR920 - update the maxEIRP calculation for continuous wave
+ Bug fix in IN865 - Update the band of the default channels
+ Bug fix in AS923 - for RX use always the payload limitation of dwell 0
+ Update function RegionCommonChanVerifyDr. Perform an 'AND' operation for security
+ Move the verification of ADR parameters into the common section. Update all regions with the related changes
+ Update comment for function RegionLinkAdrReq
+ Apply variables to data structure LinkAdrReqParams_t
+ Bug fix for KR920
+ Rename data structure LinkAdrParams_t
+ Issue(#238): Apply missing variable in sSetBandTxDoneParams
+ Bug fix in processing MAC commands for case SRV_MAC_TX_PARAM_SETUP_REQ.
+ Isse(#238): Apply missing variable in struct sBand
+ Update the MAC to enable the server to control the Channels Mask and the number of transmissions even ADR is off
+ Issue(#238): Update the backoff procedure for all regions. Move code parts into the common section
+ Update implementation to allow automatic MAC answers on port 0
+ Issue(#253): Delete all preconfigured channels when performing a join request
+ Initialize variable phyParam in functions RegionXXGetPhyParam
+ Remove assert_param from the radio drivers
+ Synchronize function RegionXXTxConfig
+ Update carrier sense functionality for LBT
+ Issue(#259): Update comment for variable HasLoopedThroughMain
+ Issue(#257): Fix typo in OnRxWindow2TimerEvent
+ Change scientific notation to numeric notation
+ Merge pull request #260 from clmklk/AU915
+ AU915: update Datarate limits according to LoRaWan 1.0.2rB
+ AU915: update Downstream datarate table according to LoRaWan 1.0.2rB
+ Merge pull request #225 from OpenChirp/patch_1
### V1.1.1/01-June-2017 ###
===============================
+ Implements LoRa Mac from Semtech/StackForce develop branch (30-May-2017 commits, 4.4.0 release candidate)
https://github.com/Lora-net/LoRaMac-node/tree/e2f35db75c1b449379d3b520c2d4e5922a9f5c81
+ Issue(235): Update functions RegionXXNextChannel.
+ Issue(238): Update initialization value of nextTxDelay.
+ Issue(234): Report back the aggregated time off.
+ Issue(232): Relocate function call to CalculateBackOff.
+ Issue(239): Update band TX power to the maximum.
+ Update LimitTxPower for US915.
+ Bug fix in function RegionCN470Verify.
+ Bug fix in function RegionAU915Verify.
+ Issue(229): Fix issue when receiving frames in second RX2 in Class C.
+ Add a ommand to get the next lower datarate.
+ Group initializations
+ Update regional definitions of KR920.
+ Update regional definitions of EU868.
+ Issue(239): Update regional definitions of AU915.
+ Update regional definitions of AU915.
+ Update regional definitions of AS923.
+ Update TX power computations.
+ Remove duplicated call to ApplyDrOffset in function RegionRxConfig.
+ Relocate the datarate, up- and downlink dwell time into a structure.
+ Change API of RegionGetPhyParam and the related functions.
+ Bug fix in function LoRaMacQueryTxPossible.
+ Apply patch for dwell time and minimum datarate.
+ Change the default datarate to DR_2 for AS923.
+ Take dwell time for ADR calculations and datarate settings into account.
+ Update LoRaMacQueryTxPossible to reset the MAC commands buffer.
+ Issue(#221): Add the dwell time in function ValidatePayloadLength.
+ Increase the transmission and reception timeout for KR920.
+ Bug fix in functions OnRxWindowXTimerEvent.
+ Remove datarate assignment.
+ Setup the downlink and uplink dwell time default value to 1.
+ Add frequency range check for AS923
+ Issue(#221): Bug fix in max payload size calculation.
+ GitHub reported issues corrections.
+ Changed the AdrAckCounter handling as expected by the test houses.
+ Fix an issue where the node stopped transmitting.
+ Removed useless LoRaMacPayload buffer.
+ MAC layer indications handling simplification.
+ Relocate parameter settings from ResetMacParameters to the initialization.
### V1.1.0/27-February-2017 ###
===============================
+ Implements LoRa Mac 4.4.0 from Semtech/StackForce from the develop branch
### V1.0.3/01-January-2017 ###
===============================
+ Read date between 2 successive read time to make sure date is ok
### V1.0.2/15-November-2016 ###
===============================
+ Corrected 1 bug in LoRaMac-board.h: RX_WND_2_CHANNEL for EU is now back at DR_0
+ Corrected 1 bug in LoRaMac.c for dataRate adaptation
### V1.0.1/15-September-2016 ###
===============================
+ Implements LoRa Mac 4.3.0 from Semtech/StackForce
### V1.0.0/01-July-2016 ###
===============================
+ First R1.0.0 customized version for STM32Cube solution.
+ Comissioning_template.h in /Conf contains all Lora Ids to connect on LoRa network
It is provided as a template. It must be moved to /Projects/inc/ as Comissioning.h
+ All files in Conf/src are provided as template and must be copied in /Projects/src.
+ All files in Conf/inc are provided as template and must be copied in /Projects/inc.
#if 0 and #endif must be removed to enable the template in the user directory
+ Implements LoRa Mac 4.2.0 from Semtech/StackForce
+ \Lora\Mac\LoRaMac.c : replace floating exponent e3 and e6 by int number
+ \Lora\Utilities\delay.c : cast uint32_t
+ Modified intensively timeServer.c
+ new low layer interfacing Cube HAL (hw_rtc.c, hw_gpio.c and hw_spi.c)
+ added lora.c as an interface layer to ease product integration
* © COPYRIGHT STMicroelectronics
*/