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STM32CubeWL/Middlewares/Third_Party/LoRaWAN/CHANGELOG.md

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# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## LoRaWAN pre-certification results
Please refer to [Releases pre-certification-results](https://github.com/Lora-net/LoRaMac-node/wiki/releases-pre-certification-results) document for further information.
## [Unreleased]
## [4.7.0] - 2022-12-09
### General
- Release based on "LoRaWAN specification 1.0.4" and "LoRaWAN specification 1.1.0 + FCntDwn ERRATA" with "LoRaWAN Regional Parameters 2-1.0.3"
- GitHub reported issues corrections.
### Known limitations
- SAMR34 platform does not implement NVM storage functionality. This is a requirement for LoRaWAN versions greater or equal to 1.0.4.
No work on this subject is forseen by the maintainers. Implementation proposals are welcome.
### Added
- Trigger NVM update on `MacGroup2.DutyCycleOn` change
- Configure radio sync word upon state restoration from NVM
- Added missing return status initialization for Class A
- Added a check for `GroupId` in order to avoid out of bounds access
- Make LBT RSSI free channel threshold and carrier sense time (CST) parameters configurable
- Signal NVM data change in `LoRaMacMc*` functions
- Teach `LoRaMacIsBusy` return false if the MAC is stopped
- Added support for new release of ARIB STD-T108 Ver1.4 under AS923 region
- Support LoRaWAN 1.1 with ATECC608A/B secure element
- Added a function to reset the stack internal state machine
- Added an option for MAC commands to verify against an explicit confirmation
- Added a check to verify that `SystemMaxRxError` provided value is in the range 0..500 ms
### Changed
- Updated regions implementation to regional parameters RP2-1.0.3
- Move AdrAckLimit and AdrAckDelay to NVM `MacGroup2`
- Refactored and improved the way the duty-cycle is managed
### Fixed
- Fixed class B multicast handling in `LoRaMacClassBProcessMulticastSlot()`
- Restore `RegionGroup2` in `RestoreNvmData`
- Fix a duty cycle related deadlock in `ScheduleTx`
- Fixed where `LastDownFCnt` update takes place for LoRaWAN 1.1.x
- Fixes for class C activation and deactivation
- Don't `memset` the TX/RX buffer when radio is set to receive mode
- Fixed usage of wrong API for general purpose keys
- Fixed and refactored JoinReq, `ReJoinType0Req`, `ReJoinType1Req`, `ReJoinType2Req` handling
- Fixed Rx windows timer handling
- Fixed FUOTA fragmentation implementation
- Fixed time credits check as proposed
- Fixed potential buffer overflow in `ProcessRadioRxDone` - [Security](###security)
- Applied the proposed fix for the CRC check of empty `struct`
- Fixed inconsistent handling of undefined callbacks
- Fixed `HardFault_Handler` for Cortex-M0 targets
- Fixed ABP join handling to be similar to OTAA join handling
- Fixed issue with RX2 data rate in case of 0x0F for `RxParamSetupReq` and `JoinAccept`
### Removed
- Removed useless `FOptsLen` filed check
- Removed unused `ACTIVE_REGION` pre-processing check
### Security
- Security breach found by Simon Worner(@SWW13) please refer to security advisory - [security advisory - CVE-2022-39274](https://github.com/Lora-net/LoRaMac-node/security/advisories/GHSA-7vv8-73pc-63c2)
## [4.6.0] - 2022-01-11
### General
- Release based on "LoRaWAN specification 1.0.4" and "LoRaWAN specification 1.1.0 + FCntDwn ERRATA" with "LoRaWAN Regional Parameters 2-1.0.1"
- GitHub reported issues corrections.
### Known limitations
- SAMR34 platform does not implement NVM storage functionality. This is a requirement for LoRaWAN versions greater or equal to 1.0.4.
No work on this subject is forseen by the maintainers. Implementation proposals are welcome.
### Added
- Added NbTrans default value reset under JoinAccept processing
- Added missing Class B certification commands
- Added missing `classBParams.NetworkActivation` variable initialization
- Added Class B remote multicast setup support
- Added data rate validation to the join accept message handling
- Added channel id limits verification to DlChannelReq handling
### Changed
- Changed `LmHandlerDeviceTimeReq` API to be publicly accessible
- Changed improved the way `USE_LRWAN_1_1_X_CRYPTO` pre-processing directive is used
- Changed improved the way `JoinNonce` is checked
### Fixed
- Fixed first beacon acquisition after receiving a `DeviceTimeAns`.
- Fixed `LmHandlerParams_t` `PingSlotPeriodicity` field type from `bool` to `uint8_t`
- Fixed i2c.h to include "utilities.h".
- Fixed VSCode `periodic-uplink-lpp` project default LoRaWAN class selection
- Fixed SX127x FSK transmission when radio current operating mode is RX.
### Removed
- Removed no more needed `MLME_SCHEDULE_UPLINK` notification
## [4.5.2] - 2021-05-28
### General
- Release based on "LoRaWAN specification 1.0.4" and "LoRaWAN Regional Parameters 2-1.0.1"
- GitHub reported issues corrections.
### Known limitations
- SAMR34 platform does not implement NVM storage functionality. This is a requirement for LoRaWAN versions greater or equal to 1.0.4.
No work on this subject is forseen by the maintainers. Implementation proposals are welcome.
### Added
- Added possibility to override periodic-uplink-lpp example `LORAWAN_DEFAULT_CLASS`
- Added I2C driver support for B-L072Z-LRWAN1 and Nucleo platforms to the build system
- Added battery voltage and MCU temperature reading functions implementation for Nucleo platforms
- Added a default value for `Request->ReqReturn.DutyCycleWaitTime` to ensure that a valid value is always returned
- Added SX126x `REG_RX_GAIN` and `REG_TX_MODULATION` to the radio registers retention list
- Added SX126x missing registers definitions
- Added radio image calibration enforcement after radio initialization and radio sleep cold start.
- Added possibility to query minimal Tx data rate
### Changed
- Updated ADC driver based on en.en-st-stm32cubeide examples
- Changed improved the way `LmHandler` handles the packages transmissions
- Changed certification `OnTxPeriodicityChanged` callback implementation in order to directly apply the requested change
- Changed the `LmHandler` initialization to apply user default data rate
- Changed SX1272 and SX1276 FSK FIFO threshold from 15 to 31 in order to give more time for the MCU to make other processing tasks
- Changed the way `IrqFired` global variable is handled by `RadioIrqProcess`
- Changed the place of call to `TimerStop( &RxTimeoutTimer )` on `RadioIrqProcess` implementation
- Changed utilities.h `SUCCESS`/`FAIL` definition by an enumeration `LMN_STATUS_OK`/`LMN_STATUS_ERROR`
### Fixed
- Fixed Null pointer exception when CN470 region was selected
- Fixed `src/system/gps.c` HasFix variable type from `double` to `bool`
- Fixed Class C downlink handling
- Fixed I2C driver for L476
- Fixed re-transmissions handling when ClassB or ClassC downlink is received
- Fixed certification `FPort224DisableReq` command NVM handling
- Fixed Class B & C confirmed downlink acknowledge management when `CLASS_B_C_RESP_TIMEOUT` expires
- Fixed an issue when receiving downlinks in class C window during a class A procedure
- Fixed SX126x and LR1110 driver IrqFired variable management
- Fixed `LmhpCompliance.c` `periodicity` array size computation
- Fixed join back-off by not storing band usage on the NVM memory.
- Fixed `LoRaMacMibGetRequestConfirm` `MIB_SE_PIN` handling
- Fixed ping-slot frequency to take in account the `AS923_FREQ_OFFSET_HZ` parameter
- Fixed fragmentation loop variable type in order to allow more than 255 fragments
- Fixed `RtcMs2Tick` conversion on SAMR34
- Fixed compiling issue when RU864 region is selected
- Fixed `MLME_SCHEDULE_UPLINK` handling.
### Removed
- Removed STM32 platforms system wake up time calibration
## [4.5.1] - 2021-01-18
### General
- Release based on "LoRaWAN specification 1.0.4" and "LoRaWAN Regional Parameters 2-1.0.1"
- GitHub reported issues corrections.
### Fixed
- Fixed compiling issues
## [4.4.7] - 2021-01-18
### General
- Release based on "LoRaWAN specification 1.0.3" and "LoRaWAN Regional Parameters v1.0.3revA"
- **Release 4.4.7 is an hotfix of 4.4.6 and is the last one supporting "LoRaWAN specification 1.0.3"**
### Changed
- Changed examples GitHub version to 4.4.7
### Fixed
- Fixed compiling issues when KR920 or RU864 regions are selected
- Fixed compiling issues for `fuota-test-01` example
## [4.5.0] - 2020-12-18
### General
- Release based on "LoRaWAN specification 1.0.4" and "LoRaWAN Regional Parameters 2-1.0.1"
- GitHub reported issues corrections. Please refer to [Release Version 4.5.0](https://github.com/Lora-net/LoRaMac-node/milestone/5)
### Added
- Added implementation of LoRaWAN 1.0.4 changes
- Added implementation for new Certification protocol specification
- Added GitHub repository and firmware examples version definitions
## [4.4.6] - 2020-12-18
### General
- Release based on "LoRaWAN specification 1.0.3" and "LoRaWAN Regional Parameters v1.0.3revA"
- GitHub reported issues corrections. Please refer to [Release Version 4.4.6](https://github.com/Lora-net/LoRaMac-node/milestone/8)
- **Release 4.4.6 is the last one supporting "LoRaWAN specification 1.0.3"**
### Changed
- Refactored MAC layer and examples Non Volatile Memory data handling
- Changed `NewChannelReq` amd `DlChannelReq` handling to ignore command for `AU915`, `CN470` and `US915` regions
- Updated behavior of `SX126xSetLoRaSymbNumTimeout` to round up the timeout to the nearest possible number of symbol.
- Changed radio drivers floating point to integer computations
- Improved `GetNextLowerTxDr` function implementation.
- Changed SX1272 and SX1276 FSK FIFO handling by using `FifoLevel` IRQ instead of `FifoEmpty` IRQ
**WARNING** *DIO1 IRQ MCU pin detection has changed from `RISING` to `RISING_FALLING` edge.*
- Changed IMST boards default power source to `USB_POWER`
### Fixed
- Fixed certification test application handling
- Fixed `ping-pong` and `rx-sensi` examples to use the right `FSK_BANDWIDTH` and `FSK_AFC_BANDWIDTH` parameters
- Fixed one byte transmissions over I2C
- Fixed `RegionIN865RxParamSetupReq` `DrOffset` verification
- Fixed STM platforms IRQ handlers when using a C++ compiler
- Fixed an issue where the Join back off algorithm wasn't being applied when the duty-cycle enforcement was OFF
- Fixed `AU915_MAX_RX1_DR_OFFSET` value to 5 instead of 6
### Removed
- Removed ClassA, ClassB and ClassC examples.
## [4.5.0-rc.1] - 2020-11-24
### General
- Release based on "LoRaWAN specification 1.0.4" and "LoRaWAN Regional Parameters 2-1.0.1"
- GitHub reported issues corrections. Please refer to [Release Version 4.5.0](https://github.com/Lora-net/LoRaMac-node/milestone/5)
### Added
- Added implementation of LoRaWAN 1.0.4 changes
- Added implementation for new Certification protocol specification
- Added GitHub repository and firmware examples version definitions
### Changed
- Changed IMST boards default power source to USB_POWER
### Fixed
- Fixed an issue where the Join back off algorithm wasn't being applied when the duty-cycle enforcement was OFF.
- Fixed `AU915_MAX_RX1_DR_OFFSET` value to 5 instead of 6
### Removed
- Removed NvmCtxCallback calls as they should only be done when a modification happens.
- Removed ClassA, ClassB and ClassC examples.
## [4.4.5] - 2020-10-14
### General
- Release based on "LoRaWAN specification 1.0.3" and "LoRaWAN Regional Parameters v1.0.3revA"
- GitHub reported issues corrections. Please refer to [Release Version 4.4.5](https://github.com/Lora-net/LoRaMac-node/milestone/7)
### Added
- Added to `FRAGMENTATION_FRAG_SESSION_SETUP_REQ` checks which verify `FragNb` and `FragSize` validity.
- Added missing call to `SX126xSetOperatingMode` on `SX126xSetTxContinuousWave` and `SX126xSetTxInfinitePreamble` functions
- Added new specific board API to initialize the RF switch (`SX126xIoRfSwitchInit`)
- Add to AS923 and KR920 regions a definition for the Rx bandwidth to be used while executing the LBT algorithm
- Added support for other AS923 channel sub plan groups.
- Added FPort filtering to loramac handler packages.
- Added missing NVM update notifications
### Changed
- Refactored function `RegionXXInitDefaults`. Fixes an issue on US based bands where the channels mask was not being reset.
- Changed hard coded `JoinAccept` max payload size (33) by `LORAMAC_JOIN_ACCEPT_FRAME_MAX_SIZE` definition.
- Moved radio operating mode management to specific board implementation
- Changed radio `IsChannelFree API` in order to provide reception bandwidth
- AS923 default downlink dwell time setting changed to disabled
- Back port 1.0.4 region implementation improvements
- Changed `RegionCommonComputeSymbolTimeLoRa`, `RegionCommonComputeSymbolTimeFsk` and `RegionCommonComputeRxWindowParameters`
API implementations to use integer divisions instead of double division.
- Changed DeriveSessionKey10x and DeriveSessionKey11x functions API (Removed pointer based variable usage)
### Fixed
- Fixed `SX126xSetLoRaSymbNumTimeout` to call the workaround only if the number of symbols is equal to or higher than 64.
- Fixed IAR C++ compiler warnings
- Fixed missing `{` after `extern "C"` in `cmac.h` file
- Fixed `FragSessionStatusAns` message construction for `Received&index` field
- Fixed `LoRaMacCryptoHandleJoinAccept` function `DevNonce`, `RJCount0` and `RJCount1` handling.
- Fixed nonce variable declaration
- Fixed `LoRaMacCrypto.c` conditional pre-processing.
- Fixed missing `Rx1Frequency` reset for dynamic channel plans
- Applied Japan ARIB restrictions to the `AS923_1_JP` sub plan
- Applied Regional Parameters 1.0.3.revA ERRATA note concerning the ClassB beacon format
- Fixed SAMR34 compiling issue when `USE_RADIO_DEBUG` directive is defined
- Fixed `SX126xClearIrqStatus` call to only clear read flags
- Fixed GFSK bandwidth handling for SX126x and LR1110 radios.
- Fixed version handling for MC root keys derivation
- Fixed Class B initialization.
- Fixed duty-cycle implementation
## [4.4.4] - 2020-05-26
### General
- Release based on "LoRaWAN specification 1.0.3" and "LoRaWAN Regional Parameters v1.0.3revA"
- GitHub reported issues corrections. Please refer to [Release Version 4.4.4](https://github.com/Lora-net/LoRaMac-node/milestone/6)
### Added
- Added the possibility to setup multicast channels locally
- Added new `SecureElementProcessJoinAccept` API to the `secure-element.h`
- Added possibility to select the secure-element to be used as well as to select if it is pre-provisioned or not
- Added support for LR1110 radio
- Added support for LR1110 crypto-engine to be used as secure-element
- Added support for ATECC608A-TNGLORA secure-element
- Added `LoRaMacDeInitialization` API to ease dynamic region change
- Added possibility to query implemented versions of the LoRaWAN MAC layer and Regional Parameters specifications
- Added `MOTE_MAC_TX_PARAM_SETUP_ANS` as sticky MAC command
- Added a filter to handle multicast downlinks exceptions
- Added `CHANGELOG.md` file
### Changed
- Updated examples to use OTAA activation method by default
- Updated `LmhpFragmentation` implementation
- Updated Radio APIs to handle 32-bit register addresses
- Changed SX126x driver to only process a received packet when there is no CRC error
- Moved `Commissioning.h` files to a single one located under `src/apps/LoRaMac/common` directory
- Updated `Radio.TimeOnAir` API in order to be independent of the current hardware settings
- Moved keys definition and management to the secure-element implementation
- Moved device identity to secure-element `se-identity.h` file
- Changed support of SAML21 platform by SAMR34 platform
- Changed the `MlmeRequest` and `McpsRequest` APIs to report back when the next transmission is possible
- Changed `ResetMacParameters` to perform a complete re-initialization of the regional layer after processing the join accept
- Updated the implementation to verify the MAC commands size
- Changed the way the duty-cycle management is handled
### Removed
- Removed the LoRaWAN keys display on serial terminal
- Removed `GEN_APP_KEY` support as it is equivalent to LoRaWAN 1.1.x `APP_KEY`
- Removed tables definition for repeater support. LoRa-Alliance will provide details on these tables usage in future versions
- Removed Changelog chapter from `readme.md` file
### Fixed
- Fixed `SX126xGetRandom` API implementation
- Fixed SX126x driver missing call to `RadioStandby` in LoRa modem case inside `RadioSetRxConfig` API
- Fixed SX126x driver `LoRaSymbNumTimeout` handling
- Fixed soft-se/cmac for misaligned 32-bit access
- Fixed ping-pong and rx-sensi projects for packets with sizes bigger than 64 bytes handling
- Fixed missing switch case `PHY_BEACON_CHANNEL_FREQ` for *AU915* region
- Fixed default data rates for Class B beacon and ping-slots for *AU915* region
- Fixed join request limitation due to duty cycle restrictions
- Fixed `SRV_MAC_DEVICE_TIME_ANS`, `SRV_MAC_PING_SLOT_INFO_ANS` and `SRV_MAC_BEACON_TIMING_ANS` processing to be executed only if corresponding MLME request is queued
- Fixed issue where the stack could get stuck in MCPS busy state after MLME Device Time Request
- Fixed duty-cycle enforcement by disabling it for *IN865* region
- Fixed potential issue where the `FCntUp` counter could sometimes be incremented by 2 instead of 1
- Fixed wrong beacon time-on-air calculation
### Security
- Security breach found by Tencent Blade Team please refer to [security advisory - CVE-2020-11068](https://github.com/Lora-net/LoRaMac-node/security/advisories/GHSA-559p-6xgm-fpv9)
## [4.4.3] - 2019-12-17
### General
- Release based on "LoRaWAN specification 1.0.3" and "LoRaWAN Regional Parameters v1.0.3revA"
- GitHub reported issues corrections. Please refer to [Release Version 4.4.3](https://github.com/Lora-net/LoRaMac-node/milestone/4)
## [4.4.2] - 2019-07-19
### General
- Release based on "LoRaWAN specification 1.0.3" and "LoRaWAN Regional Parameters v1.0.3revA"
- GitHub reported issues corrections. Please refer to [Release Version 4.4.2](https://github.com/Lora-net/LoRaMac-node/milestone/2)
### Added
- Added new refactored application examples
- Added LoRa-Alliance defined application layer protocols support. Only FUOTA test scenario 01 required features are currently implemented
- "Clock Synchronization" package
- "Fragmented data block transport" package
- "Remote multicast setup" package
- Added a NVM context management module. (Disabled by default)
- Added secure-element support
- Added B-L072Z-LRWAN1 platform support
- Added NucleoL476 platform support
- Added NucleoL476 platform support
- Added IMST new platforms
- Added *RU864* region support
- Added ClassB support
- Added a callback to notify the upper layer to call `LoRaMacProcess` function
- Added support for RxC windows (ClassC) required by the application layer protocols
### Changed
- Examples application refactoring plus the addition of the application status display on the serial port. (921600-8-N-1)
- Refactored `timer.c/h`, `rtc-driver.c/h` and added a `systime.c/h` module
- Functions in ISR context have been moved to main context
- Changed `BoardDisableIrq` and `BoardEnableIrq` functions by `CRITICAL_SECTION_BEGIN` and `CRITICAL_SECTION_END`
respectively
- Heavily refactored the `LoRaMac.c` and `LoRaMac.h` implementation
- Changed multicast channels handling according to the application layer protocols
### Removed
- Removed SensorNode platform support
- Removed MoteII platform support
- Removed LoRaMote platform support
- Removed *US915-Hybrid* region support
## Fixed
- Applied SX1272 and SX1276 radios errata note 3.1 to the radio drivers implementation
- Fixed `printf` and `scanf` functions when GCC is used as compiler
## [4.4.1] - 2018-03-07
### General
- Release based on "LoRaWAN specification 1.0.2" and "LoRaWAN Regional Parameters v1.0.2rB"
- GitHub reported issues corrections. Please refer to [Release Version 4.4.1](https://github.com/Lora-net/LoRaMac-node/milestone/1)
### Added
- Added SX126x radio support
- Added NucleoL073 and NucleoL152 board platforms support
- Added Microchip/Atmel SAML21 Xplained Pro hardware platform support
- Added CMAKE build system support
### Removed
- Removed CoIDE projects support
- Removed Keil projects support
## [4.4.0] - 2017-09-08
### General
- Release based on "LoRaWAN specification 1.0.2" and "LoRaWAN Regional Parameters v1.0.2rB"
- GitHub reported issues corrections
### Added
- Added SX126x radio support
- Added NucleoL073 and NucleoL152 board platforms support
- Added Microchip/Atmel SAML21 Xplained Pro hardware platform support
- Added CMAKE build system support
- Added the support for all "LoRaWAN Regional Parameters v1.0.2rB" document defined regions
### Changed
- Changed radio driver to perform the LBT carrier sense continuously for a given period of time
- Changed implementation to support 1.0.2 specification additions
## [4.3.2] - 2017-04-19
### General
- Release based on "LoRaWAN specification 1.0.2"
- GitHub reported issues corrections
### Added
- Added an algorithm to automatically compute the Rx windows parameters. (Window `symbolTimeout` and `Offset` from
downlink expected time)
- Added a workaround to reset the radio in case a `TxTimeout` occurs
- Added newly defined `TxCw`(Tx Continuous Wave) certification protocol command
### Changed
- Changed radio driver to perform the LBT carrier sense continuously for a given period of time
- Changed implementation to support 1.0.2 specification additions
- Changed FSK modem handling to use the provided `symbolTimeout` (1 symbol equals 1 byte) when in `RxSingle` mode
- Changed `GpioMcuInit` function to first configure the output pin state before activating the pin
- Changed the `AdrAckCounter` handling as expected by the test houses
- Relocate parameter settings from `ResetMacParameters` to the initialization
- Changed MAC layer indications handling
### Removed
- Removed useless `LoRaMacPayload` buffer
### Fixed
- Fixed an overflow issue that could happen with `NmeaStringSize` variable
- Fixed an issue where the node stopped transmitting
## [4.3.1] - 2017-02-27
### General
- Release based on "LoRaWAN specification 1.0.1"
- GitHub reported issues corrections
### Added
- Added MoteII platform based on the IMST module iM881A (STM32L051C8)
- Added NAMote72 platform
- Added TxCw (Tx continuous wave) LoRaWAN compliance protocol command
- Added TxContinuousWave support to the radio drivers
- Added region CN470 support
### Changed
- Updated the MAC layer in order to be LoRaWAN version 1.0.1 compliant (Mainly US915 bug fixes)
- Updated SensorNode projects according to the new MCU reference STM32L151CBU6. Bigger memories
- Updated ST HAL drivers
- STM32L1xx_HAL-Driver : V1.2.0
- STM32L0xx_HAL_Driver : V1.7.0
### Removed
- Removed api-v3 support from the project
### Fixed
- Fixed compliance test protocol command 0x06 behavior
- Fixed US band in order to pass the LoRaWAN certification
## [4.3.0] - 2016-06-22
### General
- Release based on "LoRaWAN specification 1.0.1"
- GitHub reported issues corrections
### Added
- Added radio `RX_TIMEOUT` irq clear into the irq handler
- Added retransmission back-off
- Added debug pin support to LoRaMote platform
- Added a function to verify the RX frequency of window 2 for US band
### Changed
- Applied to all application files the certification protocol change for LoRaWAN 1.0.1 compliance tests
**REMARK**: api-v3 application files aren't updated
- Update of the STM32L0 HAL to version 1.6.0
- Consolidated the line endings across all project files
Windows line endings has been choose for almost every file
- Updated maximum payload size for US band
- Update data rate offset table for US band
- Make MAC commands sticky
- Updated and improved MPL3115 device driver
- RTC driver major update
### Removed
- Removed the end less loop from `HAL_UART_ErrorCallback`
- Remove the `TxPower` limitation for US band on `LoRaMacMibSetRequestConfirm` function. The power will be limited
anyway when the `SendFrameOnChannel` functions is called
### Fixed
- Issue(#81): Bug fix in function `LoRaMacMlmeRequest` case `MLME_JOIN`. Function will return `LORAMAC_STATUS_BUSY` in
case the MAC is in status `MAC_TX_DELAYED`
- Issue(#83): Bug fix in parameter validation
- Issue(#84): Fix issue of `CalibrateTimer` function
- Applied pull request #87
- Issue(#88): Bug fix in function `PrepareFrame` where repeated MAC commands were not handled correctly
- Fixed `OnRadioRxDone` Node now drops frames on port 0 with fOpts > 0
- Fixed `OnRadioRxDone` Node now receives frames with fOpts > 0 when no payload is present
## [4.2.0] - 2016-05-13
### General
- Release based on "LoRaWAN specification 1.0.0"
- GitHub reported issues corrections
### Added
- Added a definition for the LoRaWAN device address. Add an IEEE_OUI for the LoRaWAN device EUI
- Added a definition for the default data rate
- Introduce individual MIN and MAX datarates for RX and TX
- Added the possibility to set and get the `ChannelsDefaultDatarate`
- Introduce a new status `MAC_RX_ABORT`. Reset `MAC_TX_RUNNING` only in `OnMacStateCheckTimerEvent`
### Changed
- Update STM32L1xx_HAL_Driver version to 1.5. Update related drivers and implementations accordingly
**REMARK**: This change implies that the time base had to be changed from microseconds to milliseconds
- Optimize radio drivers regarding FSK PER
- Increase RTC tick frequency for higher resolution
- Update the radio wake up time
- Update channel mask handling for US915 hybrid mode to support any block in the channel mask
- Optimization of the RX symbol timeout
- Replace definition `LORAMAC_DEFAULT_DATARATE` by `ChannelsDefaultDatarate` in `LoRaMacChannelAdd`
- Accept MAC information of duplicated, confirmed downlinks
### Fixed
- Fixed the frequency check condition for // ERRATA 2.1 - Sensitivity Optimization with a 500 kHz Bandwidth
- Fixed an issue when calling `SX127xInit` function more than once
- Issue(#66) correction of functions `SX1276SetOpMode` and `SX1272SetOpMode`
- Issue(#68): Fix for low level RF switch control
- Issue(#56) correction
- Issue(#63) correct the maximum payload length in RX mode
- Fixed Tx power setting loss for repeated join requests on US band
- Issue(#59): Add the possibility to set the uplink and downlink counter
- Issue(#72): Fix of possible array overrun in `LoRaMacChannelRemove`
- Issue(#74): Drop frames with a downlink counter difference greater or equal to `MAX_FCNT_GAP`
## [4.1.0] - 2016-03-10
### General
- Release based on "LoRaWAN specification 1.0.0"
- GitHub reported issues corrections
- This version has passed all mandatory LoRa-Alliance compliance tests
*One of the optional tests is unsuccessful (FSK downlinks PER on Rx1 and Rx2 windows) and is currently under investigation*
### Added
- Add missing documentation about `MIB_REPEATER_SUPPORT`. (Issue #42)
- Add a new `LoRaMacState` to allow adding channels during TX procedure. (Issue #43)
- Add a new function `PrepareRxDoneAbort` to prepare a break-out of `OnRadioRxDone` in case of an error
### Changed
- Application state machine. Relocate setting sleep state and update the duty cycle in compliance test mode
- Changed `TimerHwDelayMs` function to be re-entrant
- Rename attribute `nbRetries` to `NbTrials` in structure `McpsReqConfirmed_t`. (Issue #37)
- Updated implementation of `SetNextChannel`. Added enabling default channels in case of join request. (Issue #39)
- Relocate the activation of `LoRaMacFlags.Bits.McpsInd` in `OnRadioRxDone`
- Reset status of `NodeAckRequested` if we received an ACK or in case of timeout
- Improved and corrected `AdrNextDr` function
### Removed
- Removed support for Raisonance Ride7 IDE (Reduces the amount of work to be done at each new release)
- Removed the Bleeper-72 and Bleeper-76 platforms support as these are now deprecated
- Removed additional EU868 channels from the LoRaWAN implementation files. GitHub (Issue #49)
The creation of these additional channels has been moved to the application example
### Fixed
- Fixed `TimerIrqHandler`. Now, it is possible to insert timers in callback
- Fixed FSK modem packets bigger than 64 bytes handling (Issue #36)
- Fixed default channels activation in case all others are disabled. (Issue #39)
- Fixed default channel setting in case none is enabled
- Fixed `SRV_MAC_NEW_CHANNEL_REQ` MAC command by adding a fix to the `macIndex` variable on US915 band
- Start the MacStateCheckTimer in OnRxDone and related error cases with a short interval to handle events promptly. (Issue #44)
## [4.0.0] - 2015-12-18
### General
- Release based on "LoRaWAN specification 1.0.0"
- GitHub reported issues corrections
### Added
- LoRaWAN certification protocol implementation
### Changed
- STACKFORCE new API integration
- Reverse the EUIs arrays in the MAC layer
## [3.4.1] - 2015-11-06
### General
- Release based on "LoRaWAN specification 1.0.0"
- GitHub reported issues corrections
### Fixed
- Fixed downlink counter roll over management when several downlinks were missed
- Fixed the Radio maximum payload length management. Radio was filtering received frames with a length bigger than the transmitted one
- Applied Pull request #22 solution proposition
## [3.4.0] - 2015-10-30
### General
- Release based on "LoRaWAN specification 1.0.0"
- GitHub reported issues corrections
### Added
- Added TimerStop function calls to each timer event callback
- Added some missing variables casts. Helps on code portability
- Added const variable attribute when necessary to functions prototypes
- Added `LORAMAC_MIN_RX1_DR_OFFSET` and `LORAMAC_MAX_RX1_DR_OFFSET` definitions to `LoRaMac-board.h`. Can be different
upon used PHY layer
- Added the limitation of output power according to the number of enabled channels for US915 band
- Added the limitation of the applicative payload length according to the data rate. Does not yet take in account the
MAC commands buffer. (Issue #15)
### Changed
- Changed all applications in order to have preprocessing definitions on top of the files and added relevant comments
- Applications LED control is no more done into the timer callback functions but instead on the main while loop
- Changed types names for `stdint.h` names. Helps on code portability
- Renamed `rand` and `srand` to `rand1` and `srand1`. Helps on code portability
- Moved `ID1`, `ID2` and `ID3` definition from `board.h` to `board.c`, `usb-cdc-board.c` and `usb-dfu-board.c`
- Renamed `BoardMeasureBatterieLevel` to `BoardGetBatteryLevel`
- Added `SetMaxPayloadLength` API function to SX1272 and SX1276 radio drivers
- Changed the name of Radio API Status function to `GetStatus`
- Changed AES/CMAC types names for `stdint.h` names. Helps on code portability (Issue #20)
- Moved `__ffs` function from `utilities.h` to `spi-board.c`. This function is only used there
- Added support for the US915 band (Normal mode and hybrid mode. Hybrid mode is a temporary configuration up until servers support it automatically) (Issue #16)
- Replaced the usage of `__IO` attribute by `volatile`
- Renamed `LoRaMacEvent_t` into `LoRaMacCallbacks_t` and added a function pointer for getting battery level status
- Renamed `LoRaMacSetDutyCycleOn` into `LoRaMacSetTestDutyCycleOn`
- Renamed `LoRaMacSetMicTest` into `LoRaMacTestSetMic`
- Increased the PHY buffer size to 250
- `LoRaMacEventInfo.TxDatarate` now returns LoRaWAN data rate (DR0 -> DR7) instead of (SF12 -> DF7)
- `LoRaMac-board.h` now implements the settings for the PHY layers specified by LoRaWAN 1.0 specification. (EU433, CN780, EU868, US915) (Issue #19)
### Removed
- Removed `NULL` definition from `board.h`
- Removed the definition of `RAND_SEED`. It has been replaced by a function named `BoardGetRandomSeed`
- Removed `fputc` function redefinition from `Utilities.c`
- Removed the usage of `PACKED` attribute for data structures
- Removed `IsChannelFree` check on `LoRaMacSetNextChannel` function. LoRaWAN is an ALHOA protocol. (Pull request #8)
### Fixed
- Fixed timings comments. Timing values are most of the time us based
- Fixed and simplified the downlink sequence counter management
- Fixed channel mask management for EU868 band
- Fixed `LoRaMacPrepareFrame` function behavior when no applicative payload is present
- Fixed `MacCommandBufferIndex` management. (Issue #18)
## [3.3.0] - 2015-08-07
### General
- Release based on "LoRaWAN specification 1.0.0"
- GitHub reported issues corrections
### Added
- Added the support for LoRaWAN Class C devices
- Added the possibility to change the channel mask and number of repetitions through SRV_MAC_LINK_ADR_REQ command when ADR is disabled
### Changed
- Increased FSK SyncWord timeout value in order to listen for longer time if a down link is available or not. Makes FSK downlink more reliable
- Increased the UART USB FIFO buffer size in order to handle bigger chunks of data
- Renamed data rates as per LoRaWAN specification
- Changed confirmed messages function to use default datarate when ADR control is off
- After a Join accept the node falls back to the default datarate. Enables the user to Join a network using a different datarate from its own default one
- Moved the MAC commands processing to the right places. FOpts field before the Payload and Port 0 just after the decryption. (Pull request #9)
### Fixed
- Implemented the radios errata note workarounds. SX1276 errata 2.3 "Receiver Spurious Reception of a LoRa Signal" is not yet implemented
- Fixed handling of the MAC commands which was done incorrectly the condition to verify the length of the buffer has changed from `<` to `<=`
- Fixed `Rx1DrOffset` management. In previous version DR1 was missing for all offsets
- Fixed default FSK channel frequency
- Fixed a firmware freeze when one of the following situations arrived in `OnRxDone` callback: bad address, bad MIC, bad frame. (Pull request #10)
- Fixed weird conditions to check data rate on MAC command `SRV_MAC_NEW_CHANNEL_REQ` (Pull request #7)
- Fixed join accept message handling to be ignored if already joined (Pull request #6)
- Fixed channel index verification should use OR on `SRV_MAC_NEW_CHANNEL_REQ` command (Pull request #5)
- Fixed the CFList management on JoinAccept. The `for` loop indexes were wrong. (Pull request #4)
- Fixed AES key size (Pull request #3)
## [3.2.0] - 2015-04-30
### General
- Release based on "LoRaWAN specification 1.0.0"
- GitHub reported issues corrections
### Added
- Added the support of packed structures when using IAR tool chain
- Added a function to get the time in us
- Added a typedef for time variables (TimerTime_t)
- Added a function that returns if the GPS has a fix or not
- Added missing MAC commands and updated others when necessary
- Corrected the Port 0 MAC commands decryption
- Changed the way the upper layer is notified. Now it is only notified
when all the operations are finished
When a ClassA Tx cycle starts a timer is launched to check every second if everything is finished
- Added a new parameter to `LoRaMacEventFlags` structure that indicates on which Rx window the data has been received
- Added a new parameter to `LoRaMacEventFlags` structure that indicates if there is applicative data on the received payload
- Corrected ADR MAC command behavior
- DutyCycle enforcement implementation (EU868 PHY only)
**REMARK 1** *The regulatory duty cycle enforcement is enabled by default which means that for lower data rates the
node may not transmit a new frame as quickly as requested
The formula used to compute the node idle time is*
Toff = TimeOnAir / DutyCycle - TxTimeOnAir
*Example:*
*A device just transmitted a 0.5 s long frame on one default channel
This channel is in a sub-band allowing 1% duty-cycle. Therefore this whole sub-band (868 MHz - 868.6 MHz) will be
unavailable for 49.5 s.*
**REMARK 2** *The duty cycle enforcement can be disabled for test purposes by calling the `LoRaMacSetDutyCycleOn`
function with false parameter.*
- Implemented aggregated duty cycle management
- Added a function to create new channels
- Implemented the missing features on the JoinAccept MAC command
- Updated LoRaMacJoinDecrypt function to handle the CFList field
- Added the possibility to chose to use either public or private networks
### Changed
- Cosmetic updates
- Changed the TimeOnAir radio function to return a uint32_t value instead of a double. The value is in us
- Changed the GetPosition functions to return a latitude and longitude of 0 and altitude of 65535 when no GPS fix
- Due to duty cycle management the applicative API has changed
All applications must be updated accordingly
### Removed
- Removed support for previous LoRaMac/LoRaWAN specifications
### Fixed
- Fixed the 250 kHz bandwidth choice for the FSK modem
## [3.1.0] - 2015-01-30
### General
- Release based on "LoRaMac specification R3.0.0"
- GitHub reported issues corrections
### Added
- Started to add support for CooCox CoIDE Integrated Development Environment
Currently only LoRaMote and SensorNode platform projects are available
- Added the support of different tool chains for the `HardFault_Handler` function
- Added an invalid bandwidth to the Bandwidths table in order to avoid an error
when selecting 250 kHz bandwidth when using FSK modem
- Added another timer in order increment the tick counter without blocking the normal timer count
- Added the possibility to switch between low power timers and normal timers on the fly
- Added an I2C EEPROM driver
- Added the possibility to analyze an hard fault interrupt
- Added the possibility to configure almost all the MAC parameters
- Added the functions to read the Up and Down Link sequence counters
### Changed
- Updated GCC compiler linker scripts
- Changed the RSSI values type from int8_t to int16_t. We can have RSSI values below -128 dBm
- Updated radio API to support FHSS and CAD handling
- Changed all structures declarations to be packed
- Automatically activate the channel once it is created
### Fixed
- Fixed Radio drivers I&Q signals inversion to be possible in Rx and in Tx
Added some missing radio state machine initialization
- Fixed SNR computation on RxDone interrupt
- Fixed in `SetRxConfig` function the FSK modem preamble register name
- Fixed RTC alarm setup which could be set to an invalid date
- Fixed I2C driver by correcting the 2 bytes internal address management
Corrected buffer read function when more that 1 byte was to be read
Added a function to wait for the I2C bus to become IDLE
- Fixed and improved USB Virtual COM Port management files
Corrected the USB CDC and USB UART drivers
- Fixed RxWindow2 data rate management
- Fixed `SrvAckRequested` variable was never reset
- Fixed tstIndoor applications for LoRaMac R3.0 support
- Fixed the `LoRaMacSetNextChannel` function
- Fixed the port 0 MAC command decoding
- Fixed the Acknowledgment retries management when only 1 trial is needed
Before the device was issuing at least 2 trials
- Fixed server mac new channel req answer
- Fixed `SRV_MAC_RX2_SETUP_REQ` frequency handling
Added a x100 multiplication
- Fixed `SRV_MAC_NEW_CHANNEL_REQ`
Removed the DutyCycle parameter decoding
- Fixed `NbRepTimeoutTimer` initial value. `RxWindow2Delay` already contains `RxWindow1Delay` in it
## [3.0.0] - 2014-07-18
### General
- Release based on "LoRaMac specification R3.0.0"
- GitHub reported issues corrections
### Added
- Added to Radio API the possibility to select the modem
### Changed
- Changed radio callbacks events to timeout when it is a timeout event and error when it is a CRC error
- Radio API updated
- Updated ping-pong applications
- Updated tx-cw applications
- Updated LoRaMac applications in order to handle LoRaMac returned functions calls status
- Updated LoRaMac applications to toggle LED2 each time there is an application payload down link
- Updated tstIndoor application to handle correctly more than 6 channels
- Changed the MPL3115 altitude variable from unsigned to signed value
- Changed the usage of pow(2, n) by defining POW2 functions Saves ~2 KBytes of code
- MAC commands implemented
- LinkCheckReq **YES**
- LinkCheckAns **YES**
- LinkADRReq **YES**
- LinkADRAns **YES**
- DutyCycleReq **YES**
- DutyCycleAns **YES**
- Rx2SetupReq **YES**
- Rx2SetupAns **YES**
- DevStatusReq **YES**
- DevStatusAns **YES**
- JoinReq **YES**
- JoinAccept **YES**
- NewChannelReq **YES**
- NewChannelAns **YES**
- Features implemented
- Possibility to shut-down the device **YES** (Possible by issuing DutyCycleReq MAC command)
- Duty cycle management enforcement **NO**
- Acknowledgments retries **YES**
- Unconfirmed messages retries **YES**
### Fixed
- Fixed RSSI reading formulas as well as changed the RSSI and SNR values from double to int8_t type
- Fixed an issue potentially arriving when LOW_POWER_MODE_ENABLE wasn't defined
A timer interrupt could be generated while the TimerList could already be emptied
## [2.3.0-RC2] - 2014-07-10
### General
- Release based on "LoRaMac specification R2.2.1"
- GitHub reported issues corrections
### Fixed
- Fixed all radios antenna switch low power mode handling
- Fixed SX1276 antenna switch control
## [2.3.0-RC1] - 2014-06-06
### General
- GitHub reported issues corrections
### Added
- Added the support for SX1276 radio
- Added Bleeper-76 and SensorNode platforms support
- Added to the radio drivers a function that generates a random value from RSSI readings
- Added a project to transmit a continuous wave and a project to measure the the radio sensitivity
- Added a bootloader project for the LoRaMote and SensorNode platforms
- Added a function to the timer driver that checks if a timer is already in the list or not
- Added the UART Overrun bit exception handling to the UART driver
### Changed
- Radio driver RxDone callback function API has changed (size parameter is no more a pointer)
- Previous function prototype:
`void ( *RxDone )( uint8_t *payload, uint16_t *size, double rssi, double snr, uint8_t rawSnr );`
- New function prototype:
`void ( *RxDone )( uint8_t *payload, uint16_t size, double rssi, double snr, uint8_t rawSnr );`
- The LoRaMac application for Bleeper platforms now sends the Selector and LED status plus the sensors values
- The application payload for the Bleeper platforms is as follows:
LoRaMac port 1:
{ 0xX0/0xX1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
---------- ---------- ---------- ---------- ----
| | | | |
SELECTOR/LED PRESSURE TEMPERATURE ALTITUDE BATTERY
MSB nibble = SELECTOR (barometric)
LSB bit = LED
- Redefined `rand()` and `srand()` standard C functions. These functions are redefined in order to get the same behavior across different compiler tool chains implementations
- GPS driver improvements. Made independent of the board platform
- Simplified the RTC management
- MAC commands implemented
- LinkCheckReq **YES**
- LinkCheckAns **YES**
- LinkADRReq **YES**
- LinkADRAns **YES**
- DutyCycleReq **YES** (LoRaMac specification R2.2.1)
- DutyCycleAns **YES** (LoRaMac specification R2.2.1)
- Rx2SetupReq **YES** (LoRaMac specification R2.2.1)
- Rx2SetupAns **YES** (LoRaMac specification R2.2.1)
- DevStatusReq **YES**
- DevStatusAns **YES**
- JoinReq **YES**
- JoinAccept **YES** (LoRaMac specification R2.2.1)
- NewChannelReq **YES** (LoRaMac specification R2.2.1)
- NewChannelAns **YES** (LoRaMac specification R2.2.1)
- Features implemented
- Possibility to shut-down the device **YES** (Possible by issuing DutyCycleReq MAC command)
- Duty cycle management enforcement **NO**
- Acknowledgments retries **WORK IN PROGRESS** (Not fully debugged. Disabled by default)
- Unconfirmed messages retries **WORK IN PROGRESS** (LoRaMac specification R2.2.1)
- Due to new specification the `LoRaMacInitNwkIds` LoRaMac API function had to be modified
- Previous function prototype:
`void LoRaMacInitNwkIds( uint32_t devAddr, uint8_t *nwkSKey, uint8_t *appSKey );`
- New function prototype:
`void LoRaMacInitNwkIds( uint32_t netID, uint32_t devAddr, uint8_t *nwkSKey, uint8_t *appSKey );`
- Changed the LoRaMac channels management
- LoRaMac channels definition has been moved to `LoRaMac-board.h` file located in each specific board directory
### Removed
- Removed dependency of spi-board files to the `__builtin_ffs` function
This function is only available on GNU compiler tool suite
Removed --gnu compiler option from Keil projects
Added own `__ffs` function implementation to `utilities.h` file
- Removed obsolete class1 devices support
### Fixed
- Fixed Radio continuous reception mode
## [2.2.0] - 2014-04-07
### General
- GitHub reported issues corrections
### Added
- Added IMST SK-iM880A starter kit board support to the project
- The application payload for the SK-iM880A platform is as follows:
LoRaMac port 3:
{ 0x00/0x01, 0x00, 0x00, 0x00 }
---------- ----- ----------
| | |
LED POTI VDD
### Changed
- Ping-Pong applications have been split per supported board
- Made fifo functions coding style coherent with the project
- UART driver is now independent of the used MCU
### Fixed
- Fixed the SX1272 output power management
- Added a variable to store the current Radio channel
- Added missing FSK bit definition
## [2.1.0] - 2014-03-28
### General
- GitHub reported issues corrections
### Added
- Added to the radio driver the possibility to choose the preamble length and rxSingle symbol timeout in reception
- Added Hex coder selector driver for the Bleeper board
- Added acknowledgments retries management
- Split the `LoRaMacSendOnChannel` function in `LoRaMacPrepareFrame` and `LoRaMacSendFrameOnChannel`
`LoRaMacSendOnChannel` now calls the 2 newly defined functions
**WARNING**: By default the acknowledgment retries specific code isn't enabled
The current http://iot.semtech.com server version doesn't support it
- Added `LORAMAC_EVENT_INFO_STATUS_MAC_ERROR` event info status
### Changed
- The timers and RTC management has been rewritten
- Improved the UART and UP501 GPS drivers
- Changed copyright Unicode character to (C) in all source files
- MAC commands implemented
- LinkCheckReq **YES**
- LinkCheckAns **YES**
- LinkADRReq **YES**
- LinkADRAns **YES**
- DevStatusReq **YES**
- DevStatusAns **YES**
- JoinReq **YES**
- JoinAccept **YES**
### Fixed
- Fixed GPIO pin names management
- Fixed the antenna switch management in the SX1272 driver
- Fixed issues on JoinRequest and JoinAccept MAC commands
## [2.0.0] - 2014-02-21
### General
- GitHub reported issues corrections
### Added
- Added new MAC layer application API implementation
- Added sensors drivers implementation
### Changed
- The LoRaMac applications now sends the LED status plus the sensors values
For the LoRaMote platform the application also sends the GPS coordinates
- The application payload for the Bleeper platform is as follows:
LoRaMac port 1:
{ 0x00/0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
---------- ---------- ---------- ---------- ----
| | | | |
LED PRESSURE TEMPERATURE ALTITUDE BATTERY
(barometric)
- The application payload for the LoRaMote platform is as follows:
LoRaMac port 2:
{ 0x00/0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
---------- ---------- ---------- ---------- ---- ---------------- ---------------- ----------
| | | | | | | |
LED PRESSURE TEMPERATURE ALTITUDE BATTERY LATITUDE LONGITUDE ALTITUDE
(barometric) (gps)
- Changed applications examples according to the new MAC layer API
- MAC commands implemented
- LinkCheckReq **YES**
- LinkCheckAns **YES**
- LinkADRReq **YES**
- LinkADRAns **YES**
- DevStatusReq **YES**
- DevStatusAns **YES**
- JoinReq **YES (Not tested)**
- JoinAccept **YES (Not tested)**
### Known bugs
- Still some issues with RTC/Timer. Will be solved in a future version
## [1.1.0] - 2014-01-24
### General
- GitHub reported issues corrections
### Added
- Implemented an application LED control
- If the server sends on port 1 an application payload of one byte with the following contents:
0: LED off
1: LED on
- The node transmits periodically on port 1 the LED status on 1st byte and the message "Hello World!!!!"
the array looks like
{ 0, 'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd', '!', '!', '!', '!' }
### Changed
- MAC commands implemented
- LinkCheckReq **NO**
- LinkCheckAns **NO**
- LinkADRReq **YES**
- LinkADRAns **YES**
- DevStatusReq **YES**
- DevStatusAns **YES**
### Known bugs
- There is an issue when launching an asynchronous Timer. Will be solved in a future version
## [1.1.0-RC1] - 2014-01-20
### Added
- Added Doc directory. The directory contains:
- LoRa MAC specification
- Bleeper board schematic
### Changed
- Changed LoRaMac according to Release1 of the specification. Main changes are:
- MAC API changed
- Frame format
- ClassA first ADR implementation
- MAC commands implemented
- LinkCheckReq **NO**
- LinkCheckAns **NO**
- LinkADRReq **YES**
- LinkADRAns **NO**
- DevStatusReq **NO**
- DevStatusAns **NO**
- Timers and RTC rewriting. Known bugs are:
- The Radio wakeup time is taken in account for all timings
- When opening the second reception window the microcontroller sometimes doesn't enter in low power mode
## [1.0.0] - 2013-11-28
### General
- Initial version of the LoRa MAC node firmware implementation
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