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Diff: LoRaMac.cpp.orig
- Branch:
- v4.2.0
- Revision:
- 29:c7583fcfad8c
diff -r cda377b2a41f -r c7583fcfad8c LoRaMac.cpp.orig
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/LoRaMac.cpp.orig Thu Nov 17 14:12:24 2016 +0000
@@ -0,0 +1,4309 @@
+/*
+ / _____) _ | |
+( (____ _____ ____ _| |_ _____ ____| |__
+ \____ \| ___ | (_ _) ___ |/ ___) _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+(______/|_____)_|_|_| \__)_____)\____)_| |_|
+ (C)2013 Semtech
+ ___ _____ _ ___ _ _____ ___ ___ ___ ___
+/ __|_ _/_\ / __| |/ / __/ _ \| _ \/ __| __|
+\__ \ | |/ _ \ (__| ' <| _| (_) | / (__| _|
+|___/ |_/_/ \_\___|_|\_\_| \___/|_|_\\___|___|
+embedded.connectivity.solutions===============
+
+Description: LoRa MAC layer implementation
+
+License: Revised BSD License, see LICENSE.TXT file include in the project
+
+Maintainer: Miguel Luis ( Semtech ), Gregory Cristian ( Semtech ) and Daniel Jäckle ( STACKFORCE )
+*/
+#include "board.h"
+
+#include "LoRaMacCrypto.h"
+#include "LoRaMac.h"
+#include "LoRaMacTest.h"
+
+/*!
+ * Maximum PHY layer payload size
+ */
+#define LORAMAC_PHY_MAXPAYLOAD 255
+
+/*!
+ * Maximum MAC commands buffer size
+ */
+#define LORA_MAC_COMMAND_MAX_LENGTH 15
+
+/*!
+ * FRMPayload overhead to be used when setting the Radio.SetMaxPayloadLength
+ * in RxWindowSetup function.
+ * Maximum PHYPayload = MaxPayloadOfDatarate/MaxPayloadOfDatarateRepeater + LORA_MAC_FRMPAYLOAD_OVERHEAD
+ */
+#define LORA_MAC_FRMPAYLOAD_OVERHEAD 13 // MHDR(1) + FHDR(7) + Port(1) + MIC(4)
+
+/*!
+ * Minimum number of available channels in Frequency Hopping Mode
+ */
+#define FRQ_HOP_CHNLS_MIN 50
+
+/*!
+ * Minimum number of available channels in Hybrid Mode
+ */
+#define HYBRD_CHNLS_MIN 4
+
+
+/*!
+ * Device IEEE EUI
+ */
+static uint8_t *LoRaMacDevEui;
+
+/*!
+ * Application IEEE EUI
+ */
+static uint8_t *LoRaMacAppEui;
+
+/*!
+ * AES encryption/decryption cipher application key
+ */
+static uint8_t *LoRaMacAppKey;
+
+/*!
+ * AES encryption/decryption cipher network session key
+ */
+static uint8_t LoRaMacNwkSKey[] =
+{
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+/*!
+ * AES encryption/decryption cipher application session key
+ */
+static uint8_t LoRaMacAppSKey[] =
+{
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+/*!
+ * Device nonce is a random value extracted by issuing a sequence of RSSI
+ * measurements
+ */
+static uint16_t LoRaMacDevNonce;
+
+/*!
+ * Network ID ( 3 bytes )
+ */
+static uint32_t LoRaMacNetID;
+
+/*!
+ * Mote Address
+ */
+static uint32_t LoRaMacDevAddr;
+
+/*!
+ * Multicast channels linked list
+ */
+static MulticastParams_t *MulticastChannels = NULL;
+
+/*!
+ * Actual device class
+ */
+static DeviceClass_t LoRaMacDeviceClass;
+
+/*!
+ * Indicates if the node is connected to a private or public network
+ */
+static bool PublicNetwork;
+
+/*!
+ * Indicates if the node supports repeaters
+ */
+static bool RepeaterSupport;
+
+/*!
+ * Buffer containing the data to be sent or received.
+ */
+static uint8_t LoRaMacBuffer[LORAMAC_PHY_MAXPAYLOAD];
+
+/*!
+ * Length of packet in LoRaMacBuffer
+ */
+static uint16_t LoRaMacBufferPktLen = 0;
+
+/*!
+ * Buffer containing the upper layer data.
+ */
+static uint8_t LoRaMacPayload[LORAMAC_PHY_MAXPAYLOAD];
+static uint8_t LoRaMacRxPayload[LORAMAC_PHY_MAXPAYLOAD];
+
+/*!
+ * LoRaMAC frame counter. Each time a packet is sent the counter is incremented.
+ * Only the 16 LSB bits are sent
+ */
+static uint32_t UpLinkCounter = 1;
+
+/*!
+ * LoRaMAC frame counter. Each time a packet is received the counter is incremented.
+ * Only the 16 LSB bits are received
+ */
+static uint32_t DownLinkCounter = 0;
+
+/*!
+ * IsPacketCounterFixed enables the MIC field tests by fixing the
+ * UpLinkCounter value
+ */
+static bool IsUpLinkCounterFixed = false;
+
+/*!
+ * Used for test purposes. Disables the opening of the reception windows.
+ */
+static bool IsRxWindowsEnabled = true;
+
+/*!
+ * Indicates if the MAC layer has already joined a network.
+ */
+static bool IsLoRaMacNetworkJoined = false;
+
+/*!
+ * LoRaMac ADR control status
+ */
+static bool AdrCtrlOn = true;
+
+/*!
+ * Counts the number of missed ADR acknowledgements
+ */
+static uint32_t AdrAckCounter = 0;
+
+/*!
+ * If the node has sent a FRAME_TYPE_DATA_CONFIRMED_UP this variable indicates
+ * if the nodes needs to manage the server acknowledgement.
+ */
+static bool NodeAckRequested = false;
+
+/*!
+ * If the server has sent a FRAME_TYPE_DATA_CONFIRMED_DOWN this variable indicates
+ * if the ACK bit must be set for the next transmission
+ */
+static bool SrvAckRequested = false;
+
+/*!
+ * Indicates if the MAC layer wants to send MAC commands
+ */
+static bool MacCommandsInNextTx = false;
+
+/*!
+ * Contains the current MacCommandsBuffer index
+ */
+static uint8_t MacCommandsBufferIndex = 0;
+
+/*!
+ * Contains the current MacCommandsBuffer index for MAC commands to repeat
+ */
+static uint8_t MacCommandsBufferToRepeatIndex = 0;
+
+/*!
+ * Buffer containing the MAC layer commands
+ */
+static uint8_t MacCommandsBuffer[LORA_MAC_COMMAND_MAX_LENGTH];
+
+/*!
+ * Buffer containing the MAC layer commands which must be repeated
+ */
+static uint8_t MacCommandsBufferToRepeat[LORA_MAC_COMMAND_MAX_LENGTH];
+
+#if defined( USE_BAND_433 )
+/*!
+ * Data rates table definition
+ */
+const uint8_t Datarates[] = { 12, 11, 10, 9, 8, 7, 7, 50 };
+
+/*!
+ * Maximum payload with respect to the datarate index. Cannot operate with repeater.
+ */
+const uint8_t MaxPayloadOfDatarate[] = { 59, 59, 59, 123, 250, 250, 250, 250 };
+
+/*!
+ * Maximum payload with respect to the datarate index. Can operate with repeater.
+ */
+const uint8_t MaxPayloadOfDatarateRepeater[] = { 59, 59, 59, 123, 230, 230, 230, 230 };
+
+/*!
+ * Tx output powers table definition
+ */
+const int8_t TxPowers[] = { 20, 14, 11, 8, 5, 2 };
+
+/*!
+ * LoRaMac bands
+ */
+static Band_t Bands[LORA_MAX_NB_BANDS] =
+{
+ BAND0,
+};
+
+/*!
+ * LoRaMAC channels
+ */
+static ChannelParams_t Channels[LORA_MAX_NB_CHANNELS] =
+{
+ LC1,
+ LC2,
+ LC3,
+};
+#elif defined( USE_BAND_780 )
+/*!
+ * Data rates table definition
+ */
+const uint8_t Datarates[] = { 12, 11, 10, 9, 8, 7, 7, 50 };
+
+/*!
+ * Maximum payload with respect to the datarate index. Cannot operate with repeater.
+ */
+const uint8_t MaxPayloadOfDatarate[] = { 59, 59, 59, 123, 250, 250, 250, 250 };
+
+/*!
+ * Maximum payload with respect to the datarate index. Can operate with repeater.
+ */
+const uint8_t MaxPayloadOfDatarateRepeater[] = { 59, 59, 59, 123, 230, 230, 230, 230 };
+
+/*!
+ * Tx output powers table definition
+ */
+const int8_t TxPowers[] = { 20, 14, 11, 8, 5, 2 };
+
+/*!
+ * LoRaMac bands
+ */
+static Band_t Bands[LORA_MAX_NB_BANDS] =
+{
+ BAND0,
+};
+
+/*!
+ * LoRaMAC channels
+ */
+static ChannelParams_t Channels[LORA_MAX_NB_CHANNELS] =
+{
+ LC1,
+ LC2,
+ LC3,
+};
+#elif defined( USE_BAND_868 )
+/*!
+ * Data rates table definition
+ */
+const uint8_t Datarates[] = { 12, 11, 10, 9, 8, 7, 7, 50 };
+
+/*!
+ * Maximum payload with respect to the datarate index. Cannot operate with repeater.
+ */
+const uint8_t MaxPayloadOfDatarate[] = { 51, 51, 51, 115, 242, 242, 242, 242 };
+
+/*!
+ * Maximum payload with respect to the datarate index. Can operate with repeater.
+ */
+const uint8_t MaxPayloadOfDatarateRepeater[] = { 51, 51, 51, 115, 222, 222, 222, 222 };
+
+/*!
+ * Tx output powers table definition
+ */
+const int8_t TxPowers[] = { 20, 14, 11, 8, 5, 2 };
+
+/*!
+ * LoRaMac bands
+ */
+static Band_t Bands[LORA_MAX_NB_BANDS] =
+{
+ BAND0,
+ BAND1,
+ BAND2,
+ BAND3,
+ BAND4,
+};
+
+/*!
+ * LoRaMAC channels
+ */
+static ChannelParams_t Channels[LORA_MAX_NB_CHANNELS] =
+{
+ LC1,
+ LC2,
+ LC3,
+};
+#elif defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+/*!
+ * Data rates table definition
+ */
+const uint8_t Datarates[] = { 10, 9, 8, 7, 8, 0, 0, 0, 12, 11, 10, 9, 8, 7, 0, 0 };
+
+/*!
+ * Up/Down link data rates offset definition
+ */
+const uint8_t datarateOffsets[16][4] =
+{
+ { DR_10, DR_9 , DR_8 , DR_8 }, // DR_0
+ { DR_11, DR_10, DR_9 , DR_8 }, // DR_1
+ { DR_12, DR_11, DR_10, DR_9 }, // DR_2
+ { DR_13, DR_12, DR_11, DR_10 }, // DR_3
+ { DR_13, DR_13, DR_12, DR_11 }, // DR_4
+ { 0xFF , 0xFF , 0xFF , 0xFF },
+ { 0xFF , 0xFF , 0xFF , 0xFF },
+ { 0xFF , 0xFF , 0xFF , 0xFF },
+ { DR_8 , DR_8 , DR_8 , DR_8 },
+ { DR_9 , DR_8 , DR_8 , DR_8 },
+ { DR_10, DR_9 , DR_8 , DR_8 },
+ { DR_11, DR_10, DR_9 , DR_8 },
+ { DR_12, DR_11, DR_10, DR_9 },
+ { DR_13, DR_12, DR_11, DR_10 },
+ { 0xFF , 0xFF , 0xFF , 0xFF },
+ { 0xFF , 0xFF , 0xFF , 0xFF },
+};
+
+/*!
+ * Maximum payload with respect to the datarate index. Cannot operate with repeater.
+ */
+const uint8_t MaxPayloadOfDatarate[] = { 11, 53, 126, 242, 242, 0, 0, 0, 53, 129, 242, 242, 242, 242, 0, 0 };
+
+/*!
+ * Maximum payload with respect to the datarate index. Can operate with repeater.
+ */
+const uint8_t MaxPayloadOfDatarateRepeater[] = { 11, 53, 126, 242, 242, 0, 0, 0, 33, 109, 222, 222, 222, 222, 0, 0 };
+
+/*!
+ * Tx output powers table definition
+ */
+const int8_t TxPowers[] = { 30, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10 };
+
+/*!
+ * LoRaMac bands
+ */
+static Band_t Bands[LORA_MAX_NB_BANDS] =
+{
+ BAND0,
+};
+
+/*!
+ * LoRaMAC channels
+ */
+static ChannelParams_t Channels[LORA_MAX_NB_CHANNELS];
+
+/*!
+ * Contains the channels which remain to be applied.
+ */
+static uint16_t ChannelsMaskRemaining[6];
+
+#if defined( USE_BAND_915 )
+/*!
+ * Last join request sub-band
+ */
+static int8_t LastJoinBlock;
+
+/*!
+ * Next join sub-band block
+ */
+static uint8_t NextJoinBlock;
+
+/*!
+ * Mask of 125 KHz sub-bands not used for join transmit
+ */
+static uint8_t JoinBlocksRemaining;
+
+/*!
+ * Mask of 500 KHz sub-bands not used for join transmit
+ */
+static uint8_t Join500KHzRemaining;
+
+#ifndef JOIN_BLOCK_ORDER
+#define JOIN_BLOCK_ORDER { -1, -1, -1, -1, -1, -1, -1, -1 }
+#endif
+
+/*!
+ * join sub-band block order
+ */
+static int8_t JoinBlock[8] = JOIN_BLOCK_ORDER;
+
+#endif
+
+/*!
+ * Defines the first channel for RX window 2 for US band
+ */
+#define LORAMAC_FIRST_RX2_CHANNEL ( (uint32_t) 923.3e6 )
+
+/*!
+ * Defines the last channel for RX window 2 for US band
+ */
+#define LORAMAC_LAST_RX2_CHANNEL ( (uint32_t) 927.5e6 )
+
+/*!
+ * Defines the step width of the channels for RX window 2
+ */
+#define LORAMAC_STEPWIDTH_RX2_CHANNEL ( (uint32_t) 600e3 )
+
+
+#else
+ #error "Please define a frequency band in the compiler options."
+#endif
+
+/*!
+ * LoRaMAC 2nd reception window settings
+ */
+static Rx2ChannelParams_t Rx2Channel = RX_WND_2_CHANNEL;
+
+/*!
+ * Datarate offset between uplink and downlink on first window
+ */
+static uint8_t Rx1DrOffset = 0;
+
+/*!
+ * Mask indicating which channels are enabled
+ */
+static uint16_t ChannelsMask[6];
+
+/*!
+ * Channels Tx output power
+ */
+static int8_t ChannelsTxPower = LORAMAC_DEFAULT_TX_POWER;
+
+/*!
+ * Channels datarate
+ */
+static int8_t ChannelsDatarate = LORAMAC_DEFAULT_DATARATE;
+
+/*!
+ * Channels default datarate
+ */
+static int8_t ChannelsDefaultDatarate = LORAMAC_DEFAULT_DATARATE;
+
+/*!
+ * Number of uplink messages repetitions [1:15] (unconfirmed messages only)
+ */
+static uint8_t ChannelsNbRep = 1;
+
+/*!
+ * Uplink messages repetitions counter
+ */
+static uint8_t ChannelsNbRepCounter = 0;
+
+/*!
+ * Maximum duty cycle
+ * \remark Possibility to shutdown the device.
+ */
+static uint8_t MaxDCycle = 0;
+
+/*!
+ * Aggregated duty cycle management
+ */
+static uint16_t AggregatedDCycle;
+static TimerTime_t AggregatedLastTxDoneTime;
+static TimerTime_t AggregatedTimeOff;
+
+/*!
+ * Enables/Disables duty cycle management (Test only)
+ */
+static bool DutyCycleOn;
+
+/*!
+ * Current channel index
+ */
+static uint8_t Channel;
+
+static uint8_t LastTxChannel;
+
+/*!
+ * LoRaMac internal states
+ */
+enum eLoRaMacState
+{
+ MAC_IDLE = 0x00000000,
+ MAC_TX_RUNNING = 0x00000001,
+ MAC_RX = 0x00000002,
+ MAC_ACK_REQ = 0x00000004,
+ MAC_ACK_RETRY = 0x00000008,
+ MAC_TX_DELAYED = 0x00000010,
+ MAC_TX_CONFIG = 0x00000020,
+ MAC_RX_ABORT = 0x00000040,
+};
+
+/*!
+ * LoRaMac internal state
+ */
+uint32_t LoRaMacState = MAC_IDLE;
+
+/*!
+ * LoRaMac timer used to check the LoRaMacState (runs every second)
+ */
+static TimerEvent_t MacStateCheckTimer;
+
+/*!
+ * LoRaMac upper layer event functions
+ */
+static LoRaMacPrimitives_t *LoRaMacPrimitives;
+
+/*!
+ * LoRaMac upper layer callback functions
+ */
+static LoRaMacCallback_t *LoRaMacCallbacks;
+
+/*!
+ * Radio events function pointer
+ */
+static RadioEvents_t RadioEvents;
+
+/*!
+ * LoRaMac duty cycle delayed Tx timer
+ */
+static TimerEvent_t TxDelayedTimer;
+
+/*!
+ * LoRaMac reception windows timers
+ */
+static TimerEvent_t RxWindowTimer1;
+static TimerEvent_t RxWindowTimer2;
+
+/*!
+ * LoRaMac reception windows delay from end of Tx
+ */
+static uint32_t ReceiveDelay1;
+static uint32_t ReceiveDelay2;
+static uint32_t JoinAcceptDelay1;
+static uint32_t JoinAcceptDelay2;
+
+/*!
+ * LoRaMac reception windows delay
+ * \remark normal frame: RxWindowXDelay = ReceiveDelayX - RADIO_WAKEUP_TIME
+ * join frame : RxWindowXDelay = JoinAcceptDelayX - RADIO_WAKEUP_TIME
+ */
+static uint32_t RxWindow1Delay;
+static uint32_t RxWindow2Delay;
+
+/*!
+ * LoRaMac maximum time a reception window stays open
+ */
+static uint32_t MaxRxWindow;
+
+/*!
+ * Acknowledge timeout timer. Used for packet retransmissions.
+ */
+static TimerEvent_t AckTimeoutTimer;
+
+/*!
+ * Number of trials to get a frame acknowledged
+ */
+static uint8_t AckTimeoutRetries = 1;
+
+/*!
+ * Number of trials to get a frame acknowledged
+ */
+static uint8_t AckTimeoutRetriesCounter = 1;
+
+/*!
+ * Indicates if the AckTimeout timer has expired or not
+ */
+static bool AckTimeoutRetry = false;
+
+/*!
+ * Last transmission time on air
+ */
+TimerTime_t TxTimeOnAir = 0;
+
+/*!
+ * Structure to hold an MCPS indication data.
+ */
+static McpsIndication_t McpsIndication;
+
+/*!
+ * Structure to hold MCPS confirm data.
+ */
+static McpsConfirm_t McpsConfirm;
+
+/*!
+ * Structure to hold MLME confirm data.
+ */
+static MlmeConfirm_t MlmeConfirm;
+
+/*!
+ * Holds the current rx window slot
+ */
+static uint8_t RxSlot = 0;
+
+/*!
+ * LoRaMac tx/rx operation state
+ */
+LoRaMacFlags_t LoRaMacFlags;
+
+/*!
+ * Join Retransmission back-off configuration
+ */
+LoRaMacRetransmissionDCycle_t JoinReTransmitDCycle[JOIN_NB_RETRANSMISSION_DCYCLES] =
+{
+ JOIN_RETRANSMISSION_DCYCLE1,
+ JOIN_RETRANSMISSION_DCYCLE2,
+ JOIN_RETRANSMISSION_DCYCLE3
+};
+
+/*!
+ * Uptime of the last sent join request
+ */
+static TimerTime_t LastJoinTxTime;
+
+/*!
+ * Aggregated join request time on air
+ */
+static TimerTime_t JoinAggTimeOnAir;
+
+
+/*!
+ * \brief Function to be executed on Radio Tx Done event
+ */
+static void OnRadioTxDone( void );
+
+/*!
+ * \brief This function prepares the MAC to abort the execution of function
+ * OnRadioRxDone in case of a reception error.
+ */
+static void PrepareRxDoneAbort( void );
+
+/*!
+ * \brief Function to be executed on Radio Rx Done event
+ */
+static void OnRadioRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr );
+
+/*!
+ * \brief Function executed on Radio Tx Timeout event
+ */
+static void OnRadioTxTimeout( void );
+
+/*!
+ * \brief Function executed on Radio Rx error event
+ */
+static void OnRadioRxError( void );
+
+/*!
+ * \brief Function executed on Radio Rx Timeout event
+ */
+static void OnRadioRxTimeout( void );
+
+/*!
+ * \brief Function executed on Resend Frame timer event.
+ */
+static void OnMacStateCheckTimerEvent( void );
+
+/*!
+ * \brief Function executed on duty cycle delayed Tx timer event
+ */
+static void OnTxDelayedTimerEvent( void );
+
+/*!
+ * \brief Function executed on first Rx window timer event
+ */
+static void OnRxWindow1TimerEvent( void );
+
+/*!
+ * \brief Function executed on second Rx window timer event
+ */
+static void OnRxWindow2TimerEvent( void );
+
+/*!
+ * \brief Function executed on AckTimeout timer event
+ */
+static void OnAckTimeoutTimerEvent( void );
+
+/*!
+ * \brief Searches and set the next random available channel
+ *
+ * \param [OUT] Time to wait for the next transmission according to the duty
+ * cycle.
+ *
+ * \retval status Function status [1: OK, 0: Unable to find a channel on the
+ * current datarate]
+ */
+static bool SetNextChannel( TimerTime_t* time );
+
+/*!
+ * \brief Sets the network to public or private. Updates the sync byte.
+ *
+ * \param [IN] enable if true, it enables a public network
+ */
+static void SetPublicNetwork( bool enable );
+
+/*!
+ * \brief Initializes and opens the reception window
+ *
+ * \param [IN] freq window channel frequency
+ * \param [IN] datarate window channel datarate
+ * \param [IN] bandwidth window channel bandwidth
+ * \param [IN] timeout window channel timeout
+ */
+static void RxWindowSetup( uint32_t freq, int8_t datarate, uint32_t bandwidth, uint16_t timeout, bool rxContinuous );
+
+/*!
+ * \brief Verifies if the RX window 2 frequency is in range
+ *
+ * \param [IN] freq window channel frequency
+ *
+ * \retval status Function status [1: OK, 0: Frequency not applicable]
+ */
+static bool Rx2FreqInRange( uint32_t freq );
+
+
+/*!
+ * \brief Adds a new MAC command to be sent.
+ *
+ * \Remark MAC layer internal function
+ *
+ * \param [in] cmd MAC command to be added
+ * [MOTE_MAC_LINK_CHECK_REQ,
+ * MOTE_MAC_LINK_ADR_ANS,
+ * MOTE_MAC_DUTY_CYCLE_ANS,
+ * MOTE_MAC_RX2_PARAM_SET_ANS,
+ * MOTE_MAC_DEV_STATUS_ANS
+ * MOTE_MAC_NEW_CHANNEL_ANS]
+ * \param [in] p1 1st parameter ( optional depends on the command )
+ * \param [in] p2 2nd parameter ( optional depends on the command )
+ *
+ * \retval status Function status [0: OK, 1: Unknown command, 2: Buffer full]
+ */
+static LoRaMacStatus_t AddMacCommand( uint8_t cmd, uint8_t p1, uint8_t p2 );
+
+/*!
+ * \brief Parses the MAC commands which must be repeated.
+ *
+ * \Remark MAC layer internal function
+ *
+ * \param [IN] cmdBufIn Buffer which stores the MAC commands to send
+ * \param [IN] length Length of the input buffer to parse
+ * \param [OUT] cmdBufOut Buffer which stores the MAC commands which must be
+ * repeated.
+ *
+ * \retval Size of the MAC commands to repeat.
+ */
+static uint8_t ParseMacCommandsToRepeat( uint8_t* cmdBufIn, uint8_t length, uint8_t* cmdBufOut );
+
+/*!
+ * \brief Validates if the payload fits into the frame, taking the datarate
+ * into account.
+ *
+ * \details Refer to chapter 4.3.2 of the LoRaWAN specification, v1.0
+ *
+ * \param lenN Length of the application payload. The length depends on the
+ * datarate and is region specific
+ *
+ * \param datarate Current datarate
+ *
+ * \param fOptsLen Length of the fOpts field
+ *
+ * \retval [false: payload does not fit into the frame, true: payload fits into
+ * the frame]
+ */
+static bool ValidatePayloadLength( uint8_t lenN, int8_t datarate, uint8_t fOptsLen );
+
+/*!
+ * \brief Counts the number of bits in a mask.
+ *
+ * \param [IN] mask A mask from which the function counts the active bits.
+ * \param [IN] nbBits The number of bits to check.
+ *
+ * \retval Number of enabled bits in the mask.
+ */
+static uint8_t CountBits( uint16_t mask, uint8_t nbBits );
+
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+/*!
+ * \brief Counts the number of enabled 125 kHz channels in the channel mask.
+ * This function can only be applied to US915 band.
+ *
+ * \param [IN] channelsMask Pointer to the first element of the channel mask
+ *
+ * \retval Number of enabled channels in the channel mask
+ */
+static uint8_t CountNbEnabled125kHzChannels( uint16_t *channelsMask );
+
+#if defined( USE_BAND_915_HYBRID )
+/*!
+ * \brief Validates the correctness of the channel mask for US915, hybrid mode.
+ *
+ * \param [IN] mask Block definition to set.
+ * \param [OUT] channelsMask Pointer to the first element of the channel mask
+ */
+static void ReenableChannels( uint16_t mask, uint16_t* channelMask );
+
+/*!
+ * \brief Validates the correctness of the channel mask for US915, hybrid mode.
+ *
+ * \param [IN] channelsMask Pointer to the first element of the channel mask
+ *
+ * \retval [true: channel mask correct, false: channel mask not correct]
+ */
+static bool ValidateChannelMask( uint16_t* channelMask );
+#endif
+
+#endif
+
+/*!
+ * \brief Limits the Tx power according to the number of enabled channels
+ *
+ * \retval Returns the maximum valid tx power
+ */
+static int8_t LimitTxPower( int8_t txPower );
+
+/*!
+ * \brief Verifies, if a value is in a given range.
+ *
+ * \param value Value to verify, if it is in range
+ *
+ * \param min Minimum possible value
+ *
+ * \param max Maximum possible value
+ *
+ * \retval Returns the maximum valid tx power
+ */
+static bool ValueInRange( int8_t value, int8_t min, int8_t max );
+
+/*!
+ * \brief Calculates the next datarate to set, when ADR is on or off
+ *
+ * \param [IN] adrEnabled Specify whether ADR is on or off
+ *
+ * \param [IN] isTx Set to true if called by transmit, set to false if a dry run
+ *
+ * \param [OUT] datarateOut Reports the datarate which will be used next
+ *
+ * \param [OUT] txpowerOut Reports the tx power which will be used next
+ *
+ * \retval Returns the state of ADR ack request
+ */
+static bool AdrNextDr( bool adrEnabled, bool isTx, int8_t* datarateOut, int8_t* txpowerOut );
+
+/*!
+ * \brief Disables channel in a specified channel mask
+ *
+ * \param [IN] id - Id of the channel
+ *
+ * \param [IN] mask - Pointer to the channel mask to edit
+ *
+ * \retval [true, if disable was successful, false if not]
+ */
+static bool DisableChannelInMask( uint8_t id, uint16_t* mask );
+
+/*!
+ * \brief Decodes MAC commands in the fOpts field and in the payload
+ */
+static void ProcessMacCommands( uint8_t *payload, uint8_t macIndex, uint8_t commandsSize, uint8_t snr );
+
+/*!
+ * \brief LoRaMAC layer generic send frame
+ *
+ * \param [IN] macHdr MAC header field
+ * \param [IN] fPort MAC payload port
+ * \param [IN] fBuffer MAC data buffer to be sent
+ * \param [IN] fBufferSize MAC data buffer size
+ * \retval status Status of the operation.
+ */
+LoRaMacStatus_t Send( LoRaMacHeader_t *macHdr, uint8_t fPort, void *fBuffer, uint16_t fBufferSize );
+
+/*!
+ * \brief LoRaMAC layer frame buffer initialization
+ *
+ * \param [IN] macHdr MAC header field
+ * \param [IN] fCtrl MAC frame control field
+ * \param [IN] fOpts MAC commands buffer
+ * \param [IN] fPort MAC payload port
+ * \param [IN] fBuffer MAC data buffer to be sent
+ * \param [IN] fBufferSize MAC data buffer size
+ * \retval status Status of the operation.
+ */
+LoRaMacStatus_t PrepareFrame( LoRaMacHeader_t *macHdr, LoRaMacFrameCtrl_t *fCtrl, uint8_t fPort, void *fBuffer, uint16_t fBufferSize );
+
+/*
+ * \brief Schedules the frame according to the duty cycle
+ *
+ * \retval Status of the operation
+ */
+static LoRaMacStatus_t ScheduleTx( void );
+
+/*
+ * \brief Calculates the back-off time for the band of a channel.
+ *
+ * \param [IN] channel The last Tx channel index
+ */
+static void CalculateBackOff( uint8_t channel );
+
+/*!
+ * \brief LoRaMAC layer prepared frame buffer transmission with channel specification
+ *
+ * \remark PrepareFrame must be called at least once before calling this
+ * function.
+ *
+ * \param [IN] channel Channel parameters
+ * \retval status Status of the operation.
+ */
+LoRaMacStatus_t SendFrameOnChannel( ChannelParams_t channel );
+
+
+
+static void OnRadioTxDone( void )
+{
+ TimerTime_t curTime = TimerGetCurrentTime( );
+ if( LoRaMacDeviceClass != CLASS_C )
+ {
+ Radio.Sleep( );
+ }
+ else
+ {
+ OnRxWindow2TimerEvent( );
+ }
+
+ // Store last Tx channel
+ LastTxChannel = Channel;
+ // Update last tx done time for the current channel
+ Bands[Channels[LastTxChannel].Band].LastTxDoneTime = curTime;
+ // Update Aggregated last tx done time
+ AggregatedLastTxDoneTime = curTime;
+
+ // Update join tx done and time on air
+ if( ( LoRaMacFlags.Bits.MlmeReq == 1 ) && ( MlmeConfirm.MlmeRequest == MLME_JOIN ) )
+ {
+ JoinAggTimeOnAir += TxTimeOnAir;
+ LastJoinTxTime = curTime;
+ }
+
+ if( IsRxWindowsEnabled == true )
+ {
+ TimerSetValue( &RxWindowTimer1, RxWindow1Delay );
+ TimerStart( &RxWindowTimer1 );
+ if( LoRaMacDeviceClass != CLASS_C )
+ {
+ TimerSetValue( &RxWindowTimer2, RxWindow2Delay );
+ TimerStart( &RxWindowTimer2 );
+ }
+ if( ( LoRaMacDeviceClass == CLASS_C ) || ( NodeAckRequested == true ) )
+ {
+ TimerSetValue( &AckTimeoutTimer, RxWindow2Delay + ACK_TIMEOUT +
+ randr( -ACK_TIMEOUT_RND, ACK_TIMEOUT_RND ) );
+ TimerStart( &AckTimeoutTimer );
+ }
+ }
+ else
+ {
+ McpsConfirm.Status = LORAMAC_EVENT_INFO_STATUS_OK;
+ MlmeConfirm.Status = LORAMAC_EVENT_INFO_STATUS_RX2_TIMEOUT;
+
+ if( LoRaMacFlags.Value == 0 )
+ {
+ LoRaMacFlags.Bits.McpsReq = 1;
+ }
+ LoRaMacFlags.Bits.MacDone = 1;
+ }
+
+ if( NodeAckRequested == false )
+ {
+ McpsConfirm.Status = LORAMAC_EVENT_INFO_STATUS_OK;
+ ChannelsNbRepCounter++;
+ }
+}
+
+static void PrepareRxDoneAbort( void )
+{
+ LoRaMacState |= MAC_RX_ABORT;
+
+ if( NodeAckRequested )
+ {
+ OnAckTimeoutTimerEvent( );
+ }
+
+ if( ( RxSlot == 0 ) && ( LoRaMacDeviceClass == CLASS_C ) )
+ {
+ OnRxWindow2TimerEvent( );
+ }
+
+ LoRaMacFlags.Bits.McpsInd = 1;
+ LoRaMacFlags.Bits.MacDone = 1;
+
+ // Trig OnMacCheckTimerEvent call as soon as possible
+ TimerSetValue( &MacStateCheckTimer, 1000 );
+ TimerStart( &MacStateCheckTimer );
+}
+
+static void OnRadioRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
+{
+ LoRaMacHeader_t macHdr;
+ LoRaMacFrameCtrl_t fCtrl;
+ bool skipIndication = false;
+
+ uint8_t pktHeaderLen = 0;
+ uint32_t address = 0;
+ uint8_t appPayloadStartIndex = 0;
+ uint8_t port = 0xFF;
+ uint8_t frameLen = 0;
+ uint32_t mic = 0;
+ uint32_t micRx = 0;
+
+ uint16_t sequenceCounter = 0;
+ uint16_t sequenceCounterPrev = 0;
+ uint16_t sequenceCounterDiff = 0;
+ uint32_t downLinkCounter = 0;
+
+ MulticastParams_t *curMulticastParams = NULL;
+ uint8_t *nwkSKey = LoRaMacNwkSKey;
+ uint8_t *appSKey = LoRaMacAppSKey;
+
+ uint8_t multicast = 0;
+
+ bool isMicOk = false;
+
+ McpsConfirm.AckReceived = false;
+ McpsIndication.Rssi = rssi;
+ McpsIndication.Snr = snr;
+ McpsIndication.RxSlot = RxSlot;
+ McpsIndication.Port = 0;
+ McpsIndication.Multicast = 0;
+ McpsIndication.FramePending = 0;
+ McpsIndication.Buffer = NULL;
+ McpsIndication.BufferSize = 0;
+ McpsIndication.RxData = false;
+ McpsIndication.AckReceived = false;
+ McpsIndication.DownLinkCounter = 0;
+ McpsIndication.McpsIndication = MCPS_UNCONFIRMED;
+
+ if( LoRaMacDeviceClass != CLASS_C )
+ {
+ Radio.Sleep( );
+ }
+ TimerStop( &RxWindowTimer2 );
+
+ macHdr.Value = payload[pktHeaderLen++];
+
+ switch( macHdr.Bits.MType )
+ {
+ case FRAME_TYPE_JOIN_ACCEPT:
+ if( IsLoRaMacNetworkJoined == true )
+ {
+ break;
+ }
+ LoRaMacJoinDecrypt( payload + 1, size - 1, LoRaMacAppKey, LoRaMacRxPayload + 1 );
+
+ LoRaMacRxPayload[0] = macHdr.Value;
+
+ LoRaMacJoinComputeMic( LoRaMacRxPayload, size - LORAMAC_MFR_LEN, LoRaMacAppKey, &mic );
+
+ micRx |= ( uint32_t )LoRaMacRxPayload[size - LORAMAC_MFR_LEN];
+ micRx |= ( ( uint32_t )LoRaMacRxPayload[size - LORAMAC_MFR_LEN + 1] << 8 );
+ micRx |= ( ( uint32_t )LoRaMacRxPayload[size - LORAMAC_MFR_LEN + 2] << 16 );
+ micRx |= ( ( uint32_t )LoRaMacRxPayload[size - LORAMAC_MFR_LEN + 3] << 24 );
+
+ if( micRx == mic )
+ {
+ LoRaMacJoinComputeSKeys( LoRaMacAppKey, LoRaMacRxPayload + 1, LoRaMacDevNonce, LoRaMacNwkSKey, LoRaMacAppSKey );
+
+ LoRaMacNetID = ( uint32_t )LoRaMacRxPayload[4];
+ LoRaMacNetID |= ( ( uint32_t )LoRaMacRxPayload[5] << 8 );
+ LoRaMacNetID |= ( ( uint32_t )LoRaMacRxPayload[6] << 16 );
+
+ LoRaMacDevAddr = ( uint32_t )LoRaMacRxPayload[7];
+ LoRaMacDevAddr |= ( ( uint32_t )LoRaMacRxPayload[8] << 8 );
+ LoRaMacDevAddr |= ( ( uint32_t )LoRaMacRxPayload[9] << 16 );
+ LoRaMacDevAddr |= ( ( uint32_t )LoRaMacRxPayload[10] << 24 );
+
+ // DLSettings
+ Rx1DrOffset = ( LoRaMacRxPayload[11] >> 4 ) & 0x07;
+ Rx2Channel.Datarate = LoRaMacRxPayload[11] & 0x0F;
+ // RxDelay
+ ReceiveDelay1 = ( LoRaMacRxPayload[12] & 0x0F );
+ if( ReceiveDelay1 == 0 )
+ {
+ ReceiveDelay1 = 1;
+ }
+ ReceiveDelay1 *= 1e6;
+ ReceiveDelay2 = ReceiveDelay1 + 1e6;
+
+#if !( defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID ) )
+ //CFList
+ if( ( size - 1 ) > 16 )
+ {
+ ChannelParams_t param;
+ param.DrRange.Value = ( DR_5 << 4 ) | DR_0;
+
+ LoRaMacState |= MAC_TX_CONFIG;
+ for( uint8_t i = 3, j = 0; i < ( 5 + 3 ); i++, j += 3 )
+ {
+ param.Frequency = ( ( uint32_t )LoRaMacRxPayload[13 + j] | ( ( uint32_t )LoRaMacRxPayload[14 + j] << 8 ) | ( ( uint32_t )LoRaMacRxPayload[15 + j] << 16 ) ) * 100;
+ LoRaMacChannelAdd( i, param );
+ }
+ LoRaMacState &= ~MAC_TX_CONFIG;
+ }
+#endif
+ MlmeConfirm.Status = LORAMAC_EVENT_INFO_STATUS_OK;
+ IsLoRaMacNetworkJoined = true;
+
+ // Do not change the datarate
+ // ChannelsDatarate = ChannelsDefaultDatarate;
+ }
+ else
+ {
+ MlmeConfirm.Status = LORAMAC_EVENT_INFO_STATUS_JOIN_FAIL;
+ }
+ break;
+ case FRAME_TYPE_DATA_CONFIRMED_DOWN:
+ case FRAME_TYPE_DATA_UNCONFIRMED_DOWN:
+ {
+ address = payload[pktHeaderLen++];
+ address |= ( (uint32_t)payload[pktHeaderLen++] << 8 );
+ address |= ( (uint32_t)payload[pktHeaderLen++] << 16 );
+ address |= ( (uint32_t)payload[pktHeaderLen++] << 24 );
+
+ if( address != LoRaMacDevAddr )
+ {
+ curMulticastParams = MulticastChannels;
+ while( curMulticastParams != NULL )
+ {
+ if( address == curMulticastParams->Address )
+ {
+ multicast = 1;
+ nwkSKey = curMulticastParams->NwkSKey;
+ appSKey = curMulticastParams->AppSKey;
+ downLinkCounter = curMulticastParams->DownLinkCounter;
+ break;
+ }
+ curMulticastParams = curMulticastParams->Next;
+ }
+ if( multicast == 0 )
+ {
+ // We are not the destination of this frame.
+ McpsIndication.Status = LORAMAC_EVENT_INFO_STATUS_ADDRESS_FAIL;
+ PrepareRxDoneAbort( );
+ return;
+ }
+ }
+ else
+ {
+ multicast = 0;
+ nwkSKey = LoRaMacNwkSKey;
+ appSKey = LoRaMacAppSKey;
+ downLinkCounter = DownLinkCounter;
+ }
+
+ fCtrl.Value = payload[pktHeaderLen++];
+
+ sequenceCounter = ( uint16_t )payload[pktHeaderLen++];
+ sequenceCounter |= ( uint16_t )payload[pktHeaderLen++] << 8;
+
+ appPayloadStartIndex = 8 + fCtrl.Bits.FOptsLen;
+
+ micRx |= ( uint32_t )payload[size - LORAMAC_MFR_LEN];
+ micRx |= ( ( uint32_t )payload[size - LORAMAC_MFR_LEN + 1] << 8 );
+ micRx |= ( ( uint32_t )payload[size - LORAMAC_MFR_LEN + 2] << 16 );
+ micRx |= ( ( uint32_t )payload[size - LORAMAC_MFR_LEN + 3] << 24 );
+
+ sequenceCounterPrev = ( uint16_t )downLinkCounter;
+ sequenceCounterDiff = ( sequenceCounter - sequenceCounterPrev );
+
+ if( sequenceCounterDiff < ( 1 << 15 ) )
+ {
+ downLinkCounter += sequenceCounterDiff;
+ LoRaMacComputeMic( payload, size - LORAMAC_MFR_LEN, nwkSKey, address, DOWN_LINK, downLinkCounter, &mic );
+ if( micRx == mic )
+ {
+ isMicOk = true;
+ }
+ }
+ else
+ {
+ // check for sequence roll-over
+ uint32_t downLinkCounterTmp = downLinkCounter + 0x10000 + ( int16_t )sequenceCounterDiff;
+ LoRaMacComputeMic( payload, size - LORAMAC_MFR_LEN, nwkSKey, address, DOWN_LINK, downLinkCounterTmp, &mic );
+ if( micRx == mic )
+ {
+ isMicOk = true;
+ downLinkCounter = downLinkCounterTmp;
+ }
+ }
+
+ // Check for a the maximum allowed counter difference
+ if( sequenceCounterDiff >= MAX_FCNT_GAP )
+ {
+ McpsIndication.Status = LORAMAC_EVENT_INFO_STATUS_DOWNLINK_TOO_MANY_FRAMES_LOSS;
+ McpsIndication.DownLinkCounter = downLinkCounter;
+ PrepareRxDoneAbort( );
+ return;
+ }
+
+ if( isMicOk == true )
+ {
+ McpsIndication.Status = LORAMAC_EVENT_INFO_STATUS_OK;
+ McpsIndication.Multicast = multicast;
+ McpsIndication.FramePending = fCtrl.Bits.FPending;
+ McpsIndication.Buffer = NULL;
+ McpsIndication.BufferSize = 0;
+ McpsIndication.DownLinkCounter = downLinkCounter;
+
+ McpsConfirm.Status = LORAMAC_EVENT_INFO_STATUS_OK;
+
+ AdrAckCounter = 0;
+ MacCommandsBufferToRepeatIndex = 0;
+
+ // Update 32 bits downlink counter
+ if( multicast == 1 )
+ {
+ McpsIndication.McpsIndication = MCPS_MULTICAST;
+
+ if( ( curMulticastParams->DownLinkCounter == downLinkCounter ) &&
+ ( curMulticastParams->DownLinkCounter != 0 ) )
+ {
+ McpsIndication.Status = LORAMAC_EVENT_INFO_STATUS_DOWNLINK_REPEATED;
+ McpsIndication.DownLinkCounter = downLinkCounter;
+ PrepareRxDoneAbort( );
+ return;
+ }
+ curMulticastParams->DownLinkCounter = downLinkCounter;
+ }
+ else
+ {
+ if( macHdr.Bits.MType == FRAME_TYPE_DATA_CONFIRMED_DOWN )
+ {
+ SrvAckRequested = true;
+ McpsIndication.McpsIndication = MCPS_CONFIRMED;
+
+ if( ( DownLinkCounter == downLinkCounter ) &&
+ ( DownLinkCounter != 0 ) )
+ {
+ // Duplicated confirmed downlink. Skip indication.
+ skipIndication = true;
+ }
+ }
+ else
+ {
+ SrvAckRequested = false;
+ McpsIndication.McpsIndication = MCPS_UNCONFIRMED;
+
+ if( ( DownLinkCounter == downLinkCounter ) &&
+ ( DownLinkCounter != 0 ) )
+ {
+ McpsIndication.Status = LORAMAC_EVENT_INFO_STATUS_DOWNLINK_REPEATED;
+ McpsIndication.DownLinkCounter = downLinkCounter;
+ PrepareRxDoneAbort( );
+ return;
+ }
+ }
+ DownLinkCounter = downLinkCounter;
+ }
+
+
+ if( ( ( size - 4 ) - appPayloadStartIndex ) > 0 )
+ {
+ port = payload[appPayloadStartIndex++];
+ frameLen = ( size - 4 ) - appPayloadStartIndex;
+
+ McpsIndication.Port = port;
+
+ if( port == 0 )
+ {
+ if( fCtrl.Bits.FOptsLen == 0 )
+ {
+ LoRaMacPayloadDecrypt( payload + appPayloadStartIndex,
+ frameLen,
+ nwkSKey,
+ address,
+ DOWN_LINK,
+ downLinkCounter,
+ LoRaMacRxPayload );
+
+ // Decode frame payload MAC commands
+ ProcessMacCommands( LoRaMacRxPayload, 0, frameLen, snr );
+ }
+ else
+ {
+ skipIndication = true;
+ }
+ }
+ else
+ {
+ if( fCtrl.Bits.FOptsLen > 0 )
+ {
+ // Decode Options field MAC commands. Omit the fPort.
+ ProcessMacCommands( payload, 8, appPayloadStartIndex - 1, snr );
+ }
+
+ LoRaMacPayloadDecrypt( payload + appPayloadStartIndex,
+ frameLen,
+ appSKey,
+ address,
+ DOWN_LINK,
+ downLinkCounter,
+ LoRaMacRxPayload );
+
+ if( skipIndication == false )
+ {
+ McpsIndication.Buffer = LoRaMacRxPayload;
+ McpsIndication.BufferSize = frameLen;
+ McpsIndication.RxData = true;
+ }
+ }
+ }
+ else
+ {
+ if( fCtrl.Bits.FOptsLen > 0 )
+ {
+ // Decode Options field MAC commands
+ ProcessMacCommands( payload, 8, appPayloadStartIndex, snr );
+ }
+ }
+
+ if( skipIndication == false )
+ {
+ // Check if the frame is an acknowledgement
+ if( fCtrl.Bits.Ack == 1 )
+ {
+ McpsConfirm.AckReceived = true;
+ McpsIndication.AckReceived = true;
+
+ // Stop the AckTimeout timer as no more retransmissions
+ // are needed.
+ TimerStop( &AckTimeoutTimer );
+ }
+ else
+ {
+ McpsConfirm.AckReceived = false;
+
+ if( AckTimeoutRetriesCounter > AckTimeoutRetries )
+ {
+ // Stop the AckTimeout timer as no more retransmissions
+ // are needed.
+ TimerStop( &AckTimeoutTimer );
+ }
+ }
+ LoRaMacFlags.Bits.McpsInd = 1;
+ }
+ }
+ else
+ {
+ McpsIndication.Status = LORAMAC_EVENT_INFO_STATUS_MIC_FAIL;
+
+ PrepareRxDoneAbort( );
+ return;
+ }
+ }
+ break;
+ case FRAME_TYPE_PROPRIETARY:
+ {
+ memcpy1( LoRaMacRxPayload, &payload[pktHeaderLen], size );
+
+ McpsIndication.McpsIndication = MCPS_PROPRIETARY;
+ McpsIndication.Status = LORAMAC_EVENT_INFO_STATUS_OK;
+ McpsIndication.Buffer = LoRaMacRxPayload;
+ McpsIndication.BufferSize = size - pktHeaderLen;
+
+ LoRaMacFlags.Bits.McpsInd = 1;
+ break;
+ }
+ default:
+ McpsIndication.Status = LORAMAC_EVENT_INFO_STATUS_ERROR;
+ PrepareRxDoneAbort( );
+ break;
+ }
+
+ if( ( RxSlot == 0 ) && ( LoRaMacDeviceClass == CLASS_C ) )
+ {
+ OnRxWindow2TimerEvent( );
+ }
+ LoRaMacFlags.Bits.MacDone = 1;
+
+ // Trig OnMacCheckTimerEvent call as soon as possible
+ TimerSetValue( &MacStateCheckTimer, 1000 );
+ TimerStart( &MacStateCheckTimer );
+}
+
+static void OnRadioTxTimeout( void )
+{
+ if( LoRaMacDeviceClass != CLASS_C )
+ {
+ Radio.Sleep( );
+ }
+ else
+ {
+ OnRxWindow2TimerEvent( );
+ }
+
+ McpsConfirm.Status = LORAMAC_EVENT_INFO_STATUS_TX_TIMEOUT;
+ MlmeConfirm.Status = LORAMAC_EVENT_INFO_STATUS_TX_TIMEOUT;
+ LoRaMacFlags.Bits.MacDone = 1;
+}
+
+static void OnRadioRxError( void )
+{
+ if( LoRaMacDeviceClass != CLASS_C )
+ {
+ Radio.Sleep( );
+ }
+ else
+ {
+ OnRxWindow2TimerEvent( );
+ }
+
+ if( RxSlot == 1 )
+ {
+ if( NodeAckRequested == true )
+ {
+ McpsConfirm.Status = LORAMAC_EVENT_INFO_STATUS_RX2_ERROR;
+ }
+ MlmeConfirm.Status = LORAMAC_EVENT_INFO_STATUS_RX2_ERROR;
+ LoRaMacFlags.Bits.MacDone = 1;
+ }
+}
+
+static void OnRadioRxTimeout( void )
+{
+ if( LoRaMacDeviceClass != CLASS_C )
+ {
+ Radio.Sleep( );
+ }
+ else
+ {
+ OnRxWindow2TimerEvent( );
+ }
+
+ if( RxSlot == 1 )
+ {
+ if( NodeAckRequested == true )
+ {
+ McpsConfirm.Status = LORAMAC_EVENT_INFO_STATUS_RX2_TIMEOUT;
+ }
+ MlmeConfirm.Status = LORAMAC_EVENT_INFO_STATUS_RX2_TIMEOUT;
+ LoRaMacFlags.Bits.MacDone = 1;
+ }
+}
+
+static void OnMacStateCheckTimerEvent( void )
+{
+ TimerStop( &MacStateCheckTimer );
+ bool txTimeout = false;
+
+ if( LoRaMacFlags.Bits.MacDone == 1 )
+ {
+ if( ( LoRaMacState & MAC_RX_ABORT ) == MAC_RX_ABORT )
+ {
+ LoRaMacState &= ~MAC_RX_ABORT;
+ LoRaMacState &= ~MAC_TX_RUNNING;
+ }
+
+ if( ( LoRaMacFlags.Bits.MlmeReq == 1 ) || ( ( LoRaMacFlags.Bits.McpsReq == 1 ) ) )
+ {
+ if( ( McpsConfirm.Status == LORAMAC_EVENT_INFO_STATUS_TX_TIMEOUT ) ||
+ ( MlmeConfirm.Status == LORAMAC_EVENT_INFO_STATUS_TX_TIMEOUT ) )
+ {
+ // Stop transmit cycle due to tx timeout.
+ LoRaMacState &= ~MAC_TX_RUNNING;
+ McpsConfirm.NbRetries = AckTimeoutRetriesCounter;
+ McpsConfirm.AckReceived = false;
+ McpsConfirm.TxTimeOnAir = 0;
+ txTimeout = true;
+ }
+ }
+
+ if( ( NodeAckRequested == false ) && ( txTimeout == false ) )
+ {
+ if( LoRaMacFlags.Bits.MlmeReq == 1 )
+ {
+ if( MlmeConfirm.MlmeRequest == MLME_JOIN )
+ {
+ if( MlmeConfirm.Status == LORAMAC_EVENT_INFO_STATUS_OK )
+ {
+ UpLinkCounter = 0;
+ }
+ // Join messages aren't repeated automatically
+ ChannelsNbRepCounter = ChannelsNbRep;
+ }
+ }
+ if( ( LoRaMacFlags.Bits.MlmeReq == 1 ) || ( ( LoRaMacFlags.Bits.McpsReq == 1 ) ) )
+ {
+ if( ( ChannelsNbRepCounter >= ChannelsNbRep ) || ( LoRaMacFlags.Bits.McpsInd == 1 ) )
+ {
+ ChannelsNbRepCounter = 0;
+
+ AdrAckCounter++;
+ if( IsUpLinkCounterFixed == false )
+ {
+ UpLinkCounter++;
+ }
+
+ LoRaMacState &= ~MAC_TX_RUNNING;
+ }
+ else
+ {
+ LoRaMacFlags.Bits.MacDone = 0;
+ // Sends the same frame again
+ ScheduleTx( );
+ }
+ }
+ }
+
+ if( LoRaMacFlags.Bits.McpsInd == 1 )
+ {
+ if( ( McpsConfirm.AckReceived == true ) || ( AckTimeoutRetriesCounter > AckTimeoutRetries ) )
+ {
+ AckTimeoutRetry = false;
+ NodeAckRequested = false;
+ if( IsUpLinkCounterFixed == false )
+ {
+ UpLinkCounter++;
+ }
+ McpsConfirm.NbRetries = AckTimeoutRetriesCounter;
+
+ LoRaMacState &= ~MAC_TX_RUNNING;
+ }
+ }
+
+ if( ( AckTimeoutRetry == true ) && ( ( LoRaMacState & MAC_TX_DELAYED ) == 0 ) )
+ {
+ AckTimeoutRetry = false;
+ if( ( AckTimeoutRetriesCounter < AckTimeoutRetries ) && ( AckTimeoutRetriesCounter <= MAX_ACK_RETRIES ) )
+ {
+ AckTimeoutRetriesCounter++;
+
+ if( ( AckTimeoutRetriesCounter % 2 ) == 1 )
+ {
+ ChannelsDatarate = MAX( ChannelsDatarate - 1, LORAMAC_TX_MIN_DATARATE );
+ // Check if new datarate is valid for the Payload length
+ if( ValidatePayloadLength( LoRaMacBufferPktLen - 13, ChannelsDatarate, 0 ) == false )
+ {
+ // If invalid payload length, then revert to previous datarate
+ ChannelsDatarate++;
+ }
+ }
+ LoRaMacFlags.Bits.MacDone = 0;
+ // Sends the same frame again
+ ScheduleTx( );
+ }
+ else
+ {
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ // Re-enable default channels LC1, LC2, LC3
+ ChannelsMask[0] = ChannelsMask[0] | ( LC( 1 ) + LC( 2 ) + LC( 3 ) );
+#elif !defined( USE_BAND_915 ) && !defined( USE_BAND_915_HYBRID )
+ #error "Please define a frequency band in the compiler options."
+#endif
+ LoRaMacState &= ~MAC_TX_RUNNING;
+
+ NodeAckRequested = false;
+ McpsConfirm.AckReceived = false;
+ McpsConfirm.NbRetries = AckTimeoutRetriesCounter;
+ if( IsUpLinkCounterFixed == false )
+ {
+ UpLinkCounter++;
+ }
+ }
+ }
+ }
+ // Handle reception for Class B and Class C
+ if( ( LoRaMacState & MAC_RX ) == MAC_RX )
+ {
+ LoRaMacState &= ~MAC_RX;
+ }
+ if( LoRaMacState == MAC_IDLE )
+ {
+ if( LoRaMacFlags.Bits.McpsReq == 1 )
+ {
+ LoRaMacPrimitives->MacMcpsConfirm( &McpsConfirm );
+ LoRaMacFlags.Bits.McpsReq = 0;
+ }
+
+ if( LoRaMacFlags.Bits.MlmeReq == 1 )
+ {
+ LoRaMacPrimitives->MacMlmeConfirm( &MlmeConfirm );
+ LoRaMacFlags.Bits.MlmeReq = 0;
+ }
+
+ LoRaMacFlags.Bits.MacDone = 0;
+ }
+ else
+ {
+ // Operation not finished restart timer
+ TimerSetValue( &MacStateCheckTimer, MAC_STATE_CHECK_TIMEOUT );
+ TimerStart( &MacStateCheckTimer );
+ }
+
+ if( LoRaMacFlags.Bits.McpsInd == 1 )
+ {
+ LoRaMacPrimitives->MacMcpsIndication( &McpsIndication );
+ LoRaMacFlags.Bits.McpsInd = 0;
+ }
+}
+
+static void OnTxDelayedTimerEvent( void )
+{
+ TimerStop( &TxDelayedTimer );
+ LoRaMacState &= ~MAC_TX_DELAYED;
+
+ ScheduleTx( );
+}
+
+static void OnRxWindow1TimerEvent( void )
+{
+ uint16_t symbTimeout = 5; // DR_2, DR_1, DR_0
+ int8_t datarate = 0;
+ uint32_t bandwidth = 0; // LoRa 125 kHz
+
+ TimerStop( &RxWindowTimer1 );
+ RxSlot = 0;
+
+ if( LoRaMacDeviceClass == CLASS_C )
+ {
+ Radio.Standby( );
+ }
+
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ datarate = ChannelsDatarate - Rx1DrOffset;
+ if( datarate < 0 )
+ {
+ datarate = DR_0;
+ }
+
+ // For higher datarates, we increase the number of symbols generating a Rx Timeout
+ if( ( datarate == DR_3 ) || ( datarate == DR_4 ) )
+ { // DR_4, DR_3
+ symbTimeout = 8;
+ }
+ else if( datarate == DR_5 )
+ {
+ symbTimeout = 10;
+ }
+ else if( datarate == DR_6 )
+ {// LoRa 250 kHz
+ bandwidth = 1;
+ symbTimeout = 14;
+ }
+ RxWindowSetup( Channels[Channel].Frequency, datarate, bandwidth, symbTimeout, false );
+#elif ( defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID ) )
+ datarate = datarateOffsets[ChannelsDatarate][Rx1DrOffset];
+ if( datarate < 0 )
+ {
+ datarate = DR_0;
+ }
+ // For higher datarates, we increase the number of symbols generating a Rx Timeout
+ switch( datarate )
+ {
+ case DR_0: // SF10 - BW125
+ symbTimeout = 5;
+ break;
+
+ case DR_1: // SF9 - BW125
+ case DR_2: // SF8 - BW125
+ case DR_8: // SF12 - BW500
+ case DR_9: // SF11 - BW500
+ case DR_10: // SF10 - BW500
+ symbTimeout = 8;
+ break;
+
+ case DR_3: // SF7 - BW125
+ case DR_11: // SF9 - BW500
+ symbTimeout = 10;
+ break;
+
+ case DR_4: // SF8 - BW500
+ case DR_12: // SF8 - BW500
+ symbTimeout = 14;
+ break;
+
+ case DR_13: // SF7 - BW500
+ symbTimeout = 16;
+ break;
+ default:
+ break;
+ }
+ if( datarate >= DR_4 )
+ {// LoRa 500 kHz
+ bandwidth = 2;
+ }
+ RxWindowSetup( 923.3e6 + ( Channel % 8 ) * 600e3, datarate, bandwidth, symbTimeout, false );
+#else
+ #error "Please define a frequency band in the compiler options."
+#endif
+}
+
+static void OnRxWindow2TimerEvent( void )
+{
+ uint16_t symbTimeout = 5; // DR_2, DR_1, DR_0
+ uint32_t bandwidth = 0; // LoRa 125 kHz
+
+ TimerStop( &RxWindowTimer2 );
+ RxSlot = 1;
+
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ // For higher datarates, we increase the number of symbols generating a Rx Timeout
+ if( ( Rx2Channel.Datarate == DR_3 ) || ( Rx2Channel.Datarate == DR_4 ) )
+ { // DR_4, DR_3
+ symbTimeout = 8;
+ }
+ else if( Rx2Channel.Datarate == DR_5 )
+ {
+ symbTimeout = 10;
+ }
+ else if( Rx2Channel.Datarate == DR_6 )
+ {// LoRa 250 kHz
+ bandwidth = 1;
+ symbTimeout = 14;
+ }
+#elif ( defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID ) )
+ // For higher datarates, we increase the number of symbols generating a Rx Timeout
+ switch( Rx2Channel.Datarate )
+ {
+ case DR_0: // SF10 - BW125
+ symbTimeout = 5;
+ break;
+
+ case DR_1: // SF9 - BW125
+ case DR_2: // SF8 - BW125
+ case DR_8: // SF12 - BW500
+ case DR_9: // SF11 - BW500
+ case DR_10: // SF10 - BW500
+ symbTimeout = 8;
+ break;
+
+ case DR_3: // SF7 - BW125
+ case DR_11: // SF9 - BW500
+ symbTimeout = 10;
+ break;
+
+ case DR_4: // SF8 - BW500
+ case DR_12: // SF8 - BW500
+ symbTimeout = 14;
+ break;
+
+ case DR_13: // SF7 - BW500
+ symbTimeout = 16;
+ break;
+ default:
+ break;
+ }
+ if( Rx2Channel.Datarate >= DR_4 )
+ {// LoRa 500 kHz
+ bandwidth = 2;
+ }
+#else
+ #error "Please define a frequency band in the compiler options."
+#endif
+ if( LoRaMacDeviceClass != CLASS_C )
+ {
+ RxWindowSetup( Rx2Channel.Frequency, Rx2Channel.Datarate, bandwidth, symbTimeout, false );
+ }
+ else
+ {
+ RxWindowSetup( Rx2Channel.Frequency, Rx2Channel.Datarate, bandwidth, symbTimeout, true );
+ }
+}
+
+static void OnAckTimeoutTimerEvent( void )
+{
+ TimerStop( &AckTimeoutTimer );
+
+ if( NodeAckRequested == true )
+ {
+ AckTimeoutRetry = true;
+ LoRaMacState &= ~MAC_ACK_REQ;
+ }
+ if( LoRaMacDeviceClass == CLASS_C )
+ {
+ LoRaMacFlags.Bits.MacDone = 1;
+ }
+}
+
+#if defined( USE_BAND_915 )
+uint8_t GetNextJoinChannel( uint8_t* enabledChannels, uint8_t nbEnabledChannels )
+{
+ int8_t channel = -1;
+ uint8_t block;
+ uint8_t i;
+
+ // Use 125KHz channel
+ if( ChannelsDatarate < DR_4 )
+ {
+ block = JoinBlock[NextJoinBlock];
+ NextJoinBlock = (NextJoinBlock + 1) % 8;
+
+ // If next block is greater than max block then randomly select the next block
+ if( block >= 8 )
+ block = randr(0, 7);
+
+ // Start search for next join channel at the selected block
+ for(i = 0; ( i < 8 ) && ( channel == -1 ); i++)
+ {
+ uint8_t curBlock = (block + i) % 8;
+ uint8_t chMask;
+
+ // Cycle through all blocks before using a previously used block
+ if( ( ( JoinBlocksRemaining & ( 1 << curBlock ) ) != 0) )
+ {
+ chMask = ( ChannelsMaskRemaining[curBlock/2] >> ( curBlock & 1 ? 8 : 0 ) ) & 0xff;
+ if( chMask != 0)
+ {
+ channel = randr(0, 7);
+ for(uint8_t i = 0; ( i < 8 ); i++)
+ {
+ if( ( chMask & ( 1 << channel ) ) != 0 )
+ {
+ uint16_t chMaskTmp = ( 1 << channel );
+ chMaskTmp = chMaskTmp << ( curBlock & 1 ? 8 : 0 );
+ channel = channel + ( curBlock * 8 );
+ JoinBlocksRemaining &= ~(1 << curBlock);
+ ChannelsMaskRemaining[curBlock/2] &= ~chMaskTmp;
+ if( ( JoinBlocksRemaining == 0 ) )
+ {
+ JoinBlocksRemaining = 0xFF;
+ }
+ break;
+ }
+ else
+ {
+ channel = ( channel + 1 ) % 8;
+ }
+ }
+ }
+ }
+ }
+
+ // No next channel case should never happen since ScheduleTx has already
+ // checked for at least one enabled channel and if none re-enabled all channels.
+ // But if we find ourselves without a channel then randomly select one
+ if ( i >= 8 )
+ {
+ channel = randr( 0, 63 );
+ }
+ }
+ // Use 500 KHz channel
+ else
+ {
+ channel = randr( 0, 7 );
+ for(i = 0; i < 8; i++)
+ {
+ uint8_t curChannel = (channel + i) % 8;
+
+ if( ( ( Join500KHzRemaining & ( 1 << curChannel ) ) != 0 ) )
+ {
+ Join500KHzRemaining &= ~(1 << curChannel);
+ channel = 64 + curChannel;
+ if( Join500KHzRemaining == 0 )
+ {
+ Join500KHzRemaining = 0xFF;
+ }
+ break;
+ }
+ }
+ }
+
+ for( i = 0; i < nbEnabledChannels; i++ )
+ {
+ if( enabledChannels[i] == channel )
+ break;
+ }
+
+ if( i == nbEnabledChannels )
+ {
+ channel = enabledChannels[randr( 0, nbEnabledChannels - 1 )];
+ }
+
+ LastJoinBlock = channel / 8;
+
+ return channel;
+}
+#endif
+
+static bool SetNextChannel( TimerTime_t* time )
+{
+ uint8_t nbEnabledChannels = 0;
+ uint8_t delayTx = 0;
+ uint8_t enabledChannels[LORA_MAX_NB_CHANNELS];
+ TimerTime_t nextTxDelay = ( TimerTime_t )( -1 );
+
+ memset1( enabledChannels, 0, LORA_MAX_NB_CHANNELS );
+
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ if( CountNbEnabled125kHzChannels( ChannelsMaskRemaining ) == 0 )
+ { // Restore default channels
+ memcpy1( ( uint8_t* ) ChannelsMaskRemaining, ( uint8_t* ) ChannelsMask, 8 );
+ }
+ if( ( ChannelsDatarate >= DR_4 ) && ( ( ChannelsMaskRemaining[4] & 0x00FF ) == 0 ) )
+ { // Make sure, that the channels are activated
+ ChannelsMaskRemaining[4] = ChannelsMask[4];
+ }
+#else
+ if( CountBits( ChannelsMask[0], 16 ) == 0 )
+ {
+ // Re-enable default channels, if no channel is enabled
+ ChannelsMask[0] = ChannelsMask[0] | ( LC( 1 ) + LC( 2 ) + LC( 3 ) );
+ }
+#endif
+
+ // Update Aggregated duty cycle
+ if( AggregatedTimeOff <= TimerGetElapsedTime( AggregatedLastTxDoneTime ) )
+ {
+ AggregatedTimeOff = 0;
+
+ // Update bands Time OFF
+ for( uint8_t i = 0; i < LORA_MAX_NB_BANDS; i++ )
+ {
+ if( DutyCycleOn == true )
+ {
+ if( Bands[i].TimeOff <= TimerGetElapsedTime( Bands[i].LastTxDoneTime ) )
+ {
+ Bands[i].TimeOff = 0;
+ }
+ if( Bands[i].TimeOff != 0 )
+ {
+ nextTxDelay = MIN( Bands[i].TimeOff -
+ TimerGetElapsedTime( Bands[i].LastTxDoneTime ),
+ nextTxDelay );
+ }
+ }
+ else
+ {
+ nextTxDelay = 0;
+ Bands[i].TimeOff = 0;
+ }
+ }
+
+ // Search how many channels are enabled
+ for( uint8_t i = 0, k = 0; i < LORA_MAX_NB_CHANNELS; i += 16, k++ )
+ {
+ for( uint8_t j = 0; j < 16; j++ )
+ {
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ if( ( ChannelsMaskRemaining[k] & ( 1 << j ) ) != 0 )
+#else
+ if( ( ChannelsMask[k] & ( 1 << j ) ) != 0 )
+#endif
+ {
+ if( Channels[i + j].Frequency == 0 )
+ { // Check if the channel is enabled
+ continue;
+ }
+#if defined( USE_BAND_868 ) || defined( USE_BAND_433 ) || defined( USE_BAND_780 )
+ if( IsLoRaMacNetworkJoined == false )
+ {
+ if( ( JOIN_CHANNELS & ( 1 << j ) ) == 0 )
+ {
+ continue;
+ }
+ }
+#endif
+ if( ( ( Channels[i + j].DrRange.Fields.Min <= ChannelsDatarate ) &&
+ ( ChannelsDatarate <= Channels[i + j].DrRange.Fields.Max ) ) == false )
+ { // Check if the current channel selection supports the given datarate
+ continue;
+ }
+ if( Bands[Channels[i + j].Band].TimeOff > 0 )
+ { // Check if the band is available for transmission
+ delayTx++;
+ continue;
+ }
+ enabledChannels[nbEnabledChannels++] = i + j;
+ }
+ }
+ }
+ }
+ else
+ {
+ delayTx++;
+ nextTxDelay = AggregatedTimeOff - TimerGetElapsedTime( AggregatedLastTxDoneTime );
+ }
+
+ if( nbEnabledChannels > 0 )
+ {
+#if defined( USE_BAND_915 )
+ if ( IsLoRaMacNetworkJoined == false )
+ {
+ Channel = GetNextJoinChannel(enabledChannels, nbEnabledChannels);
+ }
+ // Send first uplink on channel from same sub-band as the join
+ else if( ( UpLinkCounter == 1 ) && ( LastJoinBlock != -1 ) )
+ {
+ uint8_t i;
+ uint8_t blockFirstChannel = LastJoinBlock*8;
+
+ Channel = randr( blockFirstChannel, blockFirstChannel + 7 );
+
+ // Check channel is enabled
+ for( i = 0; i < nbEnabledChannels; i++ )
+ {
+ if( Channel == enabledChannels[i] )
+ break;
+ }
+
+ // If channel is not enabled fallback to selecting from the list of
+ // enabled channels
+ if (i == nbEnabledChannels)
+ {
+ Channel = enabledChannels[randr( 0, nbEnabledChannels - 1 )];
+ }
+ }
+ else
+#endif
+ {
+ Channel = enabledChannels[randr( 0, nbEnabledChannels - 1 )];
+ }
+
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ if( Channel < ( LORA_MAX_NB_CHANNELS - 8 ) )
+ {
+ DisableChannelInMask( Channel, ChannelsMaskRemaining );
+ }
+#endif
+ *time = 0;
+ return true;
+ }
+ else
+ {
+ if( delayTx > 0 )
+ {
+ // Delay transmission due to AggregatedTimeOff or to a band time off
+ *time = nextTxDelay;
+ return true;
+ }
+ // Datarate not supported by any channel
+ *time = 0;
+ return false;
+ }
+}
+
+static void SetPublicNetwork( bool enable )
+{
+ PublicNetwork = enable;
+ Radio.SetModem( MODEM_LORA );
+ if( PublicNetwork == true )
+ {
+ // Change LoRa modem SyncWord
+ Radio.Write( REG_LR_SYNCWORD, LORA_MAC_PUBLIC_SYNCWORD );
+ }
+ else
+ {
+ // Change LoRa modem SyncWord
+ Radio.Write( REG_LR_SYNCWORD, LORA_MAC_PRIVATE_SYNCWORD );
+ }
+}
+
+static void RxWindowSetup( uint32_t freq, int8_t datarate, uint32_t bandwidth, uint16_t timeout, bool rxContinuous )
+{
+ uint8_t downlinkDatarate = Datarates[datarate];
+ RadioModems_t modem;
+
+ if( Radio.GetStatus( ) == RF_IDLE )
+ {
+ Radio.SetChannel( freq );
+
+ // Store downlink datarate
+ McpsIndication.RxDatarate = ( uint8_t ) datarate;
+
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ if( datarate == DR_7 )
+ {
+ modem = MODEM_FSK;
+ Radio.SetRxConfig( modem, 50e3, downlinkDatarate * 1e3, 0, 83.333e3, 5, 0, false, 0, true, 0, 0, false, rxContinuous );
+ }
+ else
+ {
+ modem = MODEM_LORA;
+ Radio.SetRxConfig( modem, bandwidth, downlinkDatarate, 1, 0, 8, timeout, false, 0, false, 0, 0, true, rxContinuous );
+ }
+#elif defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ modem = MODEM_LORA;
+ Radio.SetRxConfig( modem, bandwidth, downlinkDatarate, 1, 0, 8, timeout, false, 0, false, 0, 0, true, rxContinuous );
+#endif
+
+ if( RepeaterSupport == true )
+ {
+ Radio.SetMaxPayloadLength( modem, MaxPayloadOfDatarateRepeater[datarate] + LORA_MAC_FRMPAYLOAD_OVERHEAD );
+ }
+ else
+ {
+ Radio.SetMaxPayloadLength( modem, MaxPayloadOfDatarate[datarate] + LORA_MAC_FRMPAYLOAD_OVERHEAD );
+ }
+
+ if( rxContinuous == false )
+ {
+ Radio.Rx( MaxRxWindow );
+ }
+ else
+ {
+ Radio.Rx( 0 ); // Continuous mode
+ }
+ }
+}
+
+static bool Rx2FreqInRange( uint32_t freq )
+{
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ if( Radio.CheckRfFrequency( freq ) == true )
+#elif ( defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID ) )
+ if( ( Radio.CheckRfFrequency( freq ) == true ) &&
+ ( freq >= LORAMAC_FIRST_RX2_CHANNEL ) &&
+ ( freq <= LORAMAC_LAST_RX2_CHANNEL ) &&
+ ( ( ( freq - ( uint32_t ) LORAMAC_FIRST_RX2_CHANNEL ) % ( uint32_t ) LORAMAC_STEPWIDTH_RX2_CHANNEL ) == 0 ) )
+#endif
+ {
+ return true;
+ }
+ return false;
+}
+
+
+static bool ValidatePayloadLength( uint8_t lenN, int8_t datarate, uint8_t fOptsLen )
+{
+ uint16_t maxN = 0;
+ uint16_t payloadSize = 0;
+
+ // Get the maximum payload length
+ if( RepeaterSupport == true )
+ {
+ maxN = MaxPayloadOfDatarateRepeater[datarate];
+ }
+ else
+ {
+ maxN = MaxPayloadOfDatarate[datarate];
+ }
+
+ // Calculate the resulting payload size
+ payloadSize = ( lenN + fOptsLen );
+
+ // Validation of the application payload size
+ if( ( payloadSize <= maxN ) && ( payloadSize <= LORAMAC_PHY_MAXPAYLOAD ) )
+ {
+ return true;
+ }
+ return false;
+}
+
+static uint8_t CountBits( uint16_t mask, uint8_t nbBits )
+{
+ uint8_t nbActiveBits = 0;
+
+ for( uint8_t j = 0; j < nbBits; j++ )
+ {
+ if( ( mask & ( 1 << j ) ) == ( 1 << j ) )
+ {
+ nbActiveBits++;
+ }
+ }
+ return nbActiveBits;
+}
+
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+static uint8_t CountNbEnabled125kHzChannels( uint16_t *channelsMask )
+{
+ uint8_t nb125kHzChannels = 0;
+
+ for( uint8_t i = 0, k = 0; i < LORA_MAX_NB_CHANNELS - 8; i += 16, k++ )
+ {
+ nb125kHzChannels += CountBits( channelsMask[k], 16 );
+ }
+
+ return nb125kHzChannels;
+}
+
+#if defined( USE_BAND_915_HYBRID )
+static void ReenableChannels( uint16_t mask, uint16_t* channelMask )
+{
+ uint16_t blockMask = mask;
+
+ for( uint8_t i = 0, j = 0; i < 4; i++, j += 2 )
+ {
+ channelMask[i] = 0;
+ if( ( blockMask & ( 1 << j ) ) != 0 )
+ {
+ channelMask[i] |= 0x00FF;
+ }
+ if( ( blockMask & ( 1 << ( j + 1 ) ) ) != 0 )
+ {
+ channelMask[i] |= 0xFF00;
+ }
+ }
+ channelMask[4] = blockMask;
+ channelMask[5] = 0x0000;
+}
+
+static bool ValidateChannelMask( uint16_t* channelMask )
+{
+ bool chanMaskState = false;
+ uint16_t block1 = 0;
+ uint16_t block2 = 0;
+ uint8_t index = 0;
+
+ for( uint8_t i = 0; i < 4; i++ )
+ {
+ block1 = channelMask[i] & 0x00FF;
+ block2 = channelMask[i] & 0xFF00;
+
+ if( ( CountBits( block1, 16 ) > 5 ) && ( chanMaskState == false ) )
+ {
+ channelMask[i] &= block1;
+ channelMask[4] = 1 << ( i * 2 );
+ chanMaskState = true;
+ index = i;
+ }
+ else if( ( CountBits( block2, 16 ) > 5 ) && ( chanMaskState == false ) )
+ {
+ channelMask[i] &= block2;
+ channelMask[4] = 1 << ( i * 2 + 1 );
+ chanMaskState = true;
+ index = i;
+ }
+ }
+
+ // Do only change the channel mask, if we have found a valid block.
+ if( chanMaskState == true )
+ {
+ for( uint8_t i = 0; i < 4; i++ )
+ {
+ if( i != index )
+ {
+ channelMask[i] = 0;
+ }
+ }
+ }
+ return chanMaskState;
+}
+#endif
+#endif
+
+static int8_t LimitTxPower( int8_t txPower )
+{
+ int8_t resultTxPower = txPower;
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ if( ( ChannelsDatarate == DR_4 ) ||
+ ( ( ChannelsDatarate >= DR_8 ) && ( ChannelsDatarate <= DR_13 ) ) )
+ {// Limit tx power to max 26dBm
+ resultTxPower = MAX( txPower, TX_POWER_26_DBM );
+ }
+ else
+ {
+ if( CountNbEnabled125kHzChannels( ChannelsMask ) < FRQ_HOP_CHNLS_MIN )
+ {// Limit tx power to max 21dBm
+ resultTxPower = MAX( txPower, TX_POWER_20_DBM );
+ }
+ }
+#endif
+ return resultTxPower;
+}
+
+static bool ValueInRange( int8_t value, int8_t min, int8_t max )
+{
+ if( ( value >= min ) && ( value <= max ) )
+ {
+ return true;
+ }
+ return false;
+}
+
+static bool DisableChannelInMask( uint8_t id, uint16_t* mask )
+{
+ uint8_t index = 0;
+ index = id / 16;
+
+ if( ( index > 4 ) || ( id >= LORA_MAX_NB_CHANNELS ) )
+ {
+ return false;
+ }
+
+ // Deactivate channel
+ mask[index] &= ~( 1 << ( id % 16 ) );
+
+ return true;
+}
+
+static bool AdrNextDr( bool adrEnabled, bool isTx, int8_t* datarateOut, int8_t* txpowerOut )
+{
+ bool adrAckReq = false;
+ int8_t datarate = ChannelsDatarate;
+ int8_t txpower = ChannelsTxPower;
+
+ if( adrEnabled == true )
+ {
+ /* Request ADR Ack Request (including at lowest available datarate) */
+ adrAckReq = AdrAckCounter >= ADR_ACK_LIMIT ? true : false;
+
+ if( AdrAckCounter >= (ADR_ACK_LIMIT + ADR_ACK_DELAY) )
+ {
+ // Step up power
+ txpower = LORAMAC_DEFAULT_TX_POWER;
+
+ if( ( AdrAckCounter % ADR_ACK_DELAY ) == 0 )
+ {
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ if( datarate > LORAMAC_TX_MIN_DATARATE )
+ {
+ datarate--;
+ }
+
+ if( datarate == LORAMAC_TX_MIN_DATARATE )
+ {
+ if( isTx == true )
+ {
+ // Re-enable default channels LC1, LC2, LC3
+ ChannelsMask[0] = ChannelsMask[0] | ( LC( 1 ) + LC( 2 ) + LC( 3 ) );
+ }
+ }
+#elif defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ if( datarate > LORAMAC_TX_MIN_DATARATE )
+ {
+ if ( datarate == DR_8)
+ datarate = DR_4;
+ else
+ datarate--;
+ }
+ else if( isTx == true )
+ {
+#if defined( USE_BAND_915 )
+ // Re-enable default channels
+ ChannelsMask[0] = 0xFFFF;
+ ChannelsMask[1] = 0xFFFF;
+ ChannelsMask[2] = 0xFFFF;
+ ChannelsMask[3] = 0xFFFF;
+ ChannelsMask[4] = 0x00FF;
+ ChannelsMask[5] = 0x0000;
+#else // defined( USE_BAND_915_HYBRID )
+ // Re-enable default channels
+ ChannelsMask[0] = 0x00FF;
+ ChannelsMask[1] = 0x0000;
+ ChannelsMask[2] = 0x0000;
+ ChannelsMask[3] = 0x0000;
+ ChannelsMask[4] = 0x0001;
+ ChannelsMask[5] = 0x0000;
+#endif
+ }
+#else
+#error "Please define a frequency band in the compiler options."
+#endif
+ }
+ }
+ }
+
+ if(datarateOut != NULL)
+ *datarateOut = datarate;
+
+ if(txpowerOut != NULL)
+ *txpowerOut = txpower;
+
+ return adrAckReq;
+
+}
+
+static LoRaMacStatus_t AddMacCommand( uint8_t cmd, uint8_t p1, uint8_t p2 )
+{
+ LoRaMacStatus_t status = LORAMAC_STATUS_BUSY;
+ // The maximum buffer length must take MAC commands to re-send into account.
+ uint8_t bufLen = LORA_MAC_COMMAND_MAX_LENGTH - MacCommandsBufferToRepeatIndex;
+
+ switch( cmd )
+ {
+ case MOTE_MAC_LINK_CHECK_REQ:
+ if( MacCommandsBufferIndex < bufLen )
+ {
+ MacCommandsBuffer[MacCommandsBufferIndex++] = cmd;
+ // No payload for this command
+ status = LORAMAC_STATUS_OK;
+ }
+ break;
+ case MOTE_MAC_LINK_ADR_ANS:
+ if( MacCommandsBufferIndex < ( bufLen - 1 ) )
+ {
+ MacCommandsBuffer[MacCommandsBufferIndex++] = cmd;
+ // Margin
+ MacCommandsBuffer[MacCommandsBufferIndex++] = p1;
+ status = LORAMAC_STATUS_OK;
+ }
+ break;
+ case MOTE_MAC_DUTY_CYCLE_ANS:
+ if( MacCommandsBufferIndex < bufLen )
+ {
+ MacCommandsBuffer[MacCommandsBufferIndex++] = cmd;
+ // No payload for this answer
+ status = LORAMAC_STATUS_OK;
+ }
+ break;
+ case MOTE_MAC_RX_PARAM_SETUP_ANS:
+ if( MacCommandsBufferIndex < ( bufLen - 1 ) )
+ {
+ MacCommandsBuffer[MacCommandsBufferIndex++] = cmd;
+ // Status: Datarate ACK, Channel ACK
+ MacCommandsBuffer[MacCommandsBufferIndex++] = p1;
+ status = LORAMAC_STATUS_OK;
+ }
+ break;
+ case MOTE_MAC_DEV_STATUS_ANS:
+ if( MacCommandsBufferIndex < ( bufLen - 2 ) )
+ {
+ MacCommandsBuffer[MacCommandsBufferIndex++] = cmd;
+ // 1st byte Battery
+ // 2nd byte Margin
+ MacCommandsBuffer[MacCommandsBufferIndex++] = p1;
+ MacCommandsBuffer[MacCommandsBufferIndex++] = p2;
+ status = LORAMAC_STATUS_OK;
+ }
+ break;
+ case MOTE_MAC_NEW_CHANNEL_ANS:
+ if( MacCommandsBufferIndex < ( bufLen - 1 ) )
+ {
+ MacCommandsBuffer[MacCommandsBufferIndex++] = cmd;
+ // Status: Datarate range OK, Channel frequency OK
+ MacCommandsBuffer[MacCommandsBufferIndex++] = p1;
+ status = LORAMAC_STATUS_OK;
+ }
+ break;
+ case MOTE_MAC_RX_TIMING_SETUP_ANS:
+ if( MacCommandsBufferIndex < bufLen )
+ {
+ MacCommandsBuffer[MacCommandsBufferIndex++] = cmd;
+ // No payload for this answer
+ status = LORAMAC_STATUS_OK;
+ }
+ break;
+ default:
+ return LORAMAC_STATUS_SERVICE_UNKNOWN;
+ }
+ if( status == LORAMAC_STATUS_OK )
+ {
+ MacCommandsInNextTx = true;
+ }
+ return status;
+}
+
+static uint8_t ParseMacCommandsToRepeat( uint8_t* cmdBufIn, uint8_t length, uint8_t* cmdBufOut )
+{
+ uint8_t i = 0;
+ uint8_t cmdCount = 0;
+
+ if( ( cmdBufIn == NULL ) || ( cmdBufOut == NULL ) )
+ {
+ return 0;
+ }
+
+ for( i = 0; i < length; i++ )
+ {
+ switch( cmdBufIn[i] )
+ {
+ case MOTE_MAC_RX_PARAM_SETUP_ANS:
+ {
+ cmdBufOut[cmdCount++] = cmdBufIn[i++];
+ cmdBufOut[cmdCount++] = cmdBufIn[i++];
+ cmdBufOut[cmdCount++] = cmdBufIn[i];
+ break;
+ }
+ case MOTE_MAC_RX_TIMING_SETUP_ANS:
+ {
+ cmdBufOut[cmdCount++] = cmdBufIn[i];
+ break;
+ }
+ default:
+ break;
+ }
+ }
+
+ return cmdCount;
+}
+
+static void ProcessMacCommands( uint8_t *payload, uint8_t macIndex, uint8_t commandsSize, uint8_t snr )
+{
+ uint8_t validLinkAdrCmds = 0;
+ int8_t txPower = 0;
+ int8_t datarate = 0;
+ uint8_t nbRep = 0;
+ uint16_t channelsMask[6] = {0,0,0,0,0,0};
+ uint8_t LinkAdrMacCmdBufferIndex = 0;
+
+ while( macIndex < commandsSize )
+ {
+ // Decode Frame MAC commands
+ switch( payload[macIndex++] )
+ {
+ case SRV_MAC_LINK_CHECK_ANS:
+ MlmeConfirm.Status = LORAMAC_EVENT_INFO_STATUS_OK;
+ MlmeConfirm.DemodMargin = payload[macIndex++];
+ MlmeConfirm.NbGateways = payload[macIndex++];
+ break;
+ case SRV_MAC_LINK_ADR_REQ:
+ {
+ uint8_t chMaskCntl = 0;
+ uint8_t status = 0x07;
+ uint16_t chMask;
+
+ datarate = payload[macIndex++];
+ txPower = datarate & 0x0F;
+ datarate = ( datarate >> 4 ) & 0x0F;
+
+ if( ( AdrCtrlOn == false ) &&
+ ( ( ChannelsDatarate != datarate ) || ( ChannelsTxPower != txPower ) ) )
+ { // ADR disabled don't handle ADR requests if server tries to change datarate or txpower
+ // Answer the server with fail status
+ // Power ACK = 0
+ // Data rate ACK = 0
+ // Channel mask = 0
+ AddMacCommand( MOTE_MAC_LINK_ADR_ANS, 0, 0 );
+ macIndex += 3; // Skip over the remaining bytes of the request
+ break;
+ }
+ else if ( validLinkAdrCmds++ == 0 )
+ {
+ // Initialize local copy of the channels mask array
+ for(uint8_t i = 0; i < 6; i++ )
+ {
+ channelsMask[i] = ChannelsMask[i];
+ }
+ }
+
+
+ chMask = ( uint16_t )payload[macIndex++];
+ chMask |= ( uint16_t )payload[macIndex++] << 8;
+
+ nbRep = payload[macIndex++];
+ chMaskCntl = ( nbRep >> 4 ) & 0x07;
+ nbRep &= 0x0F;
+ if( nbRep == 0 )
+ {
+ nbRep = 1;
+ }
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ if( ( chMaskCntl == 0 ) && ( chMask == 0 ) )
+ {
+ status &= 0xFE; // Channel mask KO
+ }
+ else if( ( ( chMaskCntl >= 1 ) && ( chMaskCntl <= 5 )) ||
+ ( chMaskCntl >= 7 ) )
+ {
+ // RFU
+ status &= 0xFE; // Channel mask KO
+ }
+ else
+ {
+ for( i = 0; i < LORA_MAX_NB_CHANNELS; i++ )
+ {
+ if( chMaskCntl == 6 )
+ {
+ if( Channels[i].Frequency != 0 )
+ {
+ chMask |= 1 << i;
+ }
+ }
+ else
+ {
+ if( ( ( chMask & ( 1 << i ) ) != 0 ) &&
+ ( Channels[i].Frequency == 0 ) )
+ {// Trying to enable an undefined channel
+ status &= 0xFE; // Channel mask KO
+ }
+ }
+ }
+ channelsMask[0] = chMask;
+ }
+#elif defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ if( chMaskCntl < 4 )
+ {
+ channelsMask[chMaskCntl] = chMask;
+ }
+ else if( chMaskCntl == 6 )
+ {
+ // Enable all 125 kHz channels
+ for( uint8_t i = 0, k = 0; i < LORA_MAX_NB_CHANNELS - 8; i += 16, k++ )
+ {
+ for( uint8_t j = 0; j < 16; j++ )
+ {
+ if( Channels[i + j].Frequency != 0 )
+ {
+ channelsMask[k] |= 1 << j;
+ }
+ }
+ }
+ // channel mask applied to 500 kHz channels
+ channelsMask[4] = chMask;
+ }
+ else if( chMaskCntl == 7 )
+ {
+ // Disable all 125 kHz channels
+ channelsMask[0] = 0x0000;
+ channelsMask[1] = 0x0000;
+ channelsMask[2] = 0x0000;
+ channelsMask[3] = 0x0000;
+
+ // channel mask applied to 500 kHz channels
+ channelsMask[4] = chMask;
+ }
+ else
+ {
+ // RFU
+ status &= 0xFE; // Channel mask KO
+ }
+#else
+ #error "Please define a frequency band in the compiler options."
+#endif
+ if( ValueInRange( datarate, LORAMAC_TX_MIN_DATARATE, LORAMAC_TX_MAX_DATARATE ) == false )
+ {
+ status &= 0xFD; // Datarate KO
+ }
+
+ //
+ // Remark MaxTxPower = 0 and MinTxPower = 5
+ //
+ if( ValueInRange( txPower, LORAMAC_MAX_TX_POWER, LORAMAC_MIN_TX_POWER ) == false )
+ {
+ status &= 0xFB; // TxPower KO
+ }
+
+
+ // Save the mac command status location for possible channel mask KO later
+ LinkAdrMacCmdBufferIndex = MacCommandsBufferIndex;
+
+ AddMacCommand( MOTE_MAC_LINK_ADR_ANS, status, 0 );
+ }
+ break;
+ case SRV_MAC_DUTY_CYCLE_REQ:
+ MaxDCycle = payload[macIndex++];
+ AggregatedDCycle = 1 << MaxDCycle;
+ AddMacCommand( MOTE_MAC_DUTY_CYCLE_ANS, 0, 0 );
+ break;
+ case SRV_MAC_RX_PARAM_SETUP_REQ:
+ {
+ uint8_t status = 0x07;
+ int8_t datarate = 0;
+ int8_t drOffset = 0;
+ uint32_t freq = 0;
+
+ drOffset = ( payload[macIndex] >> 4 ) & 0x07;
+ datarate = payload[macIndex] & 0x0F;
+ macIndex++;
+
+ freq = ( uint32_t )payload[macIndex++];
+ freq |= ( uint32_t )payload[macIndex++] << 8;
+ freq |= ( uint32_t )payload[macIndex++] << 16;
+ freq *= 100;
+
+ if( Rx2FreqInRange( freq ) == false )
+ {
+ status &= 0xFE; // Channel frequency KO
+ }
+
+ if( ValueInRange( datarate, LORAMAC_RX_MIN_DATARATE, LORAMAC_RX_MAX_DATARATE ) == false )
+ {
+ status &= 0xFD; // Datarate KO
+ }
+#if ( defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID ) )
+ if( ( ValueInRange( datarate, DR_5, DR_7 ) == true ) ||
+ ( datarate > DR_13 ) )
+ {
+ status &= 0xFD; // Datarate KO
+ }
+#endif
+ if( ValueInRange( drOffset, LORAMAC_MIN_RX1_DR_OFFSET, LORAMAC_MAX_RX1_DR_OFFSET ) == false )
+ {
+ status &= 0xFB; // Rx1DrOffset range KO
+ }
+
+ if( ( status & 0x07 ) == 0x07 )
+ {
+ Rx2Channel.Datarate = datarate;
+ Rx2Channel.Frequency = freq;
+ Rx1DrOffset = drOffset;
+ }
+ AddMacCommand( MOTE_MAC_RX_PARAM_SETUP_ANS, status, 0 );
+ }
+ break;
+ case SRV_MAC_DEV_STATUS_REQ:
+ {
+ uint8_t batteryLevel = BAT_LEVEL_NO_MEASURE;
+ if( ( LoRaMacCallbacks != NULL ) && ( LoRaMacCallbacks->GetBatteryLevel != NULL ) )
+ {
+ batteryLevel = LoRaMacCallbacks->GetBatteryLevel( );
+ }
+ AddMacCommand( MOTE_MAC_DEV_STATUS_ANS, batteryLevel, snr );
+ break;
+ }
+ case SRV_MAC_NEW_CHANNEL_REQ:
+ {
+ uint8_t status = 0x03;
+
+#if ( defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID ) )
+ status &= 0xFC; // Channel frequency and datarate KO
+ macIndex += 5;
+#else
+ int8_t channelIndex = 0;
+ ChannelParams_t chParam;
+
+ channelIndex = payload[macIndex++];
+ chParam.Frequency = ( uint32_t )payload[macIndex++];
+ chParam.Frequency |= ( uint32_t )payload[macIndex++] << 8;
+ chParam.Frequency |= ( uint32_t )payload[macIndex++] << 16;
+ chParam.Frequency *= 100;
+ chParam.DrRange.Value = payload[macIndex++];
+
+ LoRaMacState |= MAC_TX_CONFIG;
+ if( chParam.Frequency == 0 )
+ {
+ if( channelIndex < 3 )
+ {
+ status &= 0xFC;
+ }
+ else
+ {
+ if( LoRaMacChannelRemove( channelIndex ) != LORAMAC_STATUS_OK )
+ {
+ status &= 0xFC;
+ }
+ }
+ }
+ else
+ {
+ switch( LoRaMacChannelAdd( channelIndex, chParam ) )
+ {
+ case LORAMAC_STATUS_OK:
+ {
+ break;
+ }
+ case LORAMAC_STATUS_FREQUENCY_INVALID:
+ {
+ status &= 0xFE;
+ break;
+ }
+ case LORAMAC_STATUS_DATARATE_INVALID:
+ {
+ status &= 0xFD;
+ break;
+ }
+ case LORAMAC_STATUS_FREQ_AND_DR_INVALID:
+ {
+ status &= 0xFC;
+ break;
+ }
+ default:
+ {
+ status &= 0xFC;
+ break;
+ }
+ }
+ }
+ LoRaMacState &= ~MAC_TX_CONFIG;
+#endif
+ AddMacCommand( MOTE_MAC_NEW_CHANNEL_ANS, status, 0 );
+ }
+ break;
+ case SRV_MAC_RX_TIMING_SETUP_REQ:
+ {
+ uint8_t delay = payload[macIndex++] & 0x0F;
+
+ if( delay == 0 )
+ {
+ delay++;
+ }
+ ReceiveDelay1 = delay * 1e6;
+ ReceiveDelay2 = ReceiveDelay1 + 1e6;
+ AddMacCommand( MOTE_MAC_RX_TIMING_SETUP_ANS, 0, 0 );
+ }
+ break;
+ default:
+ // Unknown command. ABORT MAC commands processing
+ return;
+ }
+ }
+
+ // Process accumulated Link ADR channel mask changes
+ if( validLinkAdrCmds > 0 )
+ {
+ uint8_t drOkCounter = 0;
+ uint8_t status = 0x07;
+
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ for(uint8_t i=0; i< 6; i++)
+ {
+ for( uint8_t j = 0; j < 16; j++ )
+ {
+ if( ( channelsMask[i] & ( 1 << j ) ) != 0 )
+ {
+ if ( ( Channels[i * 16 + j].Frequency == 0 ) )
+ {
+ status &= 0xFE; // Channel mask KO
+ break;
+ }
+ else if( ( datarate >= Channels[i * 16 + j].DrRange.Fields.Min ) &&
+ ( datarate <= Channels[i * 16 + j].DrRange.Fields.Max ) )
+ {
+ drOkCounter++;
+ }
+ }
+ }
+ }
+
+ if ( drOkCounter == 0 )
+ {
+ status &= 0xFD; // Datarate KO
+ }
+
+ if( ( CountNbEnabled125kHzChannels( channelsMask ) > 0 ) && ( CountNbEnabled125kHzChannels( channelsMask ) < HYBRD_CHNLS_MIN ) )
+ {
+ status &= 0xFE; // Channel mask KO
+ }
+
+#if defined( USE_BAND_915_HYBRID )
+ if( ValidateChannelMask( channelsMask ) == false )
+ {
+ status &= 0xFE; // Channel mask KO
+ }
+#endif
+
+#endif
+ if( ( status & 0x07 ) == 0x07 )
+ {
+ ChannelsDatarate = datarate;
+ ChannelsDefaultDatarate = datarate;
+ ChannelsTxPower = txPower;
+
+ ChannelsMask[0] = channelsMask[0];
+ ChannelsMask[1] = channelsMask[1];
+ ChannelsMask[2] = channelsMask[2];
+ ChannelsMask[3] = channelsMask[3];
+ ChannelsMask[4] = channelsMask[4];
+ ChannelsMask[5] = channelsMask[5];
+
+ ChannelsNbRep = nbRep;
+
+ // Clear remaining channels mask
+ memcpy1( ( uint8_t* ) ChannelsMaskRemaining, ( uint8_t* ) ChannelsMask, 10 );
+ }
+ // Channel Mask KO
+ else
+ {
+ // Update the last Link ADR status with channel mask KO
+ if( (LinkAdrMacCmdBufferIndex+1 ) < LORA_MAC_COMMAND_MAX_LENGTH )
+ MacCommandsBuffer[LinkAdrMacCmdBufferIndex+1] &= status;
+ }
+ }
+}
+
+LoRaMacStatus_t Send( LoRaMacHeader_t *macHdr, uint8_t fPort, void *fBuffer, uint16_t fBufferSize )
+{
+ LoRaMacFrameCtrl_t fCtrl;
+ LoRaMacStatus_t status = LORAMAC_STATUS_PARAMETER_INVALID;
+
+ fCtrl.Value = 0;
+ fCtrl.Bits.FOptsLen = 0;
+ fCtrl.Bits.FPending = 0;
+ fCtrl.Bits.Ack = false;
+ fCtrl.Bits.AdrAckReq = false;
+ fCtrl.Bits.Adr = AdrCtrlOn;
+
+ // Prepare the frame
+ status = PrepareFrame( macHdr, &fCtrl, fPort, fBuffer, fBufferSize );
+
+ // Validate status
+ if( status != LORAMAC_STATUS_OK )
+ {
+ return status;
+ }
+
+ // Reset confirm parameters
+ McpsConfirm.NbRetries = 0;
+ McpsConfirm.AckReceived = false;
+ McpsConfirm.UpLinkCounter = UpLinkCounter;
+
+ status = ScheduleTx( );
+
+ return status;
+}
+
+static LoRaMacStatus_t ScheduleTx( )
+{
+ TimerTime_t dutyCycleTimeOff = 0;
+
+ // Check if the device is off
+ if( MaxDCycle == 255 )
+ {
+ return LORAMAC_STATUS_DEVICE_OFF;
+ }
+ if( MaxDCycle == 0 )
+ {
+ AggregatedTimeOff = 0;
+ }
+
+ CalculateBackOff( LastTxChannel );
+
+ // Select channel
+ while( SetNextChannel( &dutyCycleTimeOff ) == false )
+ {
+ // Set the default datarate
+ ChannelsDatarate = ChannelsDefaultDatarate;
+
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ // Re-enable default channels LC1, LC2, LC3
+ ChannelsMask[0] = ChannelsMask[0] | ( LC( 1 ) + LC( 2 ) + LC( 3 ) );
+#endif
+ }
+
+ // Schedule transmission of frame
+ if( dutyCycleTimeOff == 0 )
+ {
+ // Try to send now
+ return SendFrameOnChannel( Channels[Channel] );
+ }
+ else
+ {
+ // Send later - prepare timer
+ LoRaMacState |= MAC_TX_DELAYED;
+ TimerSetValue( &TxDelayedTimer, dutyCycleTimeOff );
+ TimerStart( &TxDelayedTimer );
+
+ return LORAMAC_STATUS_OK;
+ }
+}
+
+static void CalculateBackOff( uint8_t channel )
+{
+ uint16_t dutyCycle = Bands[Channels[channel].Band].DCycle;
+
+ if( IsLoRaMacNetworkJoined == false )
+ {
+#if defined( USE_BAND_868 ) || defined( USE_BAND_433 ) || defined( USE_BAND_780 )
+ dutyCycle = JOIN_DC;
+#endif
+ }
+
+ // Update Band Time OFF
+ if( DutyCycleOn == true )
+ {
+ Bands[Channels[channel].Band].TimeOff = TxTimeOnAir * dutyCycle - TxTimeOnAir;
+ }
+ else
+ {
+ Bands[Channels[channel].Band].TimeOff = 0;
+ }
+ // Update Aggregated Time OFF
+ AggregatedTimeOff = AggregatedTimeOff + ( TxTimeOnAir * AggregatedDCycle - TxTimeOnAir );
+}
+
+LoRaMacStatus_t PrepareFrame( LoRaMacHeader_t *macHdr, LoRaMacFrameCtrl_t *fCtrl, uint8_t fPort, void *fBuffer, uint16_t fBufferSize )
+{
+ uint16_t i;
+ uint8_t pktHeaderLen = 0;
+ uint32_t mic = 0;
+ const void* payload = fBuffer;
+ uint8_t payloadSize = fBufferSize;
+ uint8_t framePort = fPort;
+
+ LoRaMacBufferPktLen = 0;
+
+ NodeAckRequested = false;
+
+ if( fBuffer == NULL )
+ {
+ fBufferSize = 0;
+ }
+
+ LoRaMacBuffer[pktHeaderLen++] = macHdr->Value;
+
+ switch( macHdr->Bits.MType )
+ {
+ case FRAME_TYPE_JOIN_REQ:
+ RxWindow1Delay = JoinAcceptDelay1 - RADIO_WAKEUP_TIME;
+ RxWindow2Delay = JoinAcceptDelay2 - RADIO_WAKEUP_TIME;
+
+ LoRaMacBufferPktLen = pktHeaderLen;
+
+ memcpyr( LoRaMacBuffer + LoRaMacBufferPktLen, LoRaMacAppEui, 8 );
+ LoRaMacBufferPktLen += 8;
+ memcpyr( LoRaMacBuffer + LoRaMacBufferPktLen, LoRaMacDevEui, 8 );
+ LoRaMacBufferPktLen += 8;
+
+ LoRaMacDevNonce = Radio.Random( );
+
+ LoRaMacBuffer[LoRaMacBufferPktLen++] = LoRaMacDevNonce & 0xFF;
+ LoRaMacBuffer[LoRaMacBufferPktLen++] = ( LoRaMacDevNonce >> 8 ) & 0xFF;
+
+ LoRaMacJoinComputeMic( LoRaMacBuffer, LoRaMacBufferPktLen & 0xFF, LoRaMacAppKey, &mic );
+
+ LoRaMacBuffer[LoRaMacBufferPktLen++] = mic & 0xFF;
+ LoRaMacBuffer[LoRaMacBufferPktLen++] = ( mic >> 8 ) & 0xFF;
+ LoRaMacBuffer[LoRaMacBufferPktLen++] = ( mic >> 16 ) & 0xFF;
+ LoRaMacBuffer[LoRaMacBufferPktLen++] = ( mic >> 24 ) & 0xFF;
+
+ break;
+ case FRAME_TYPE_DATA_CONFIRMED_UP:
+ NodeAckRequested = true;
+ //Intentional falltrough
+ case FRAME_TYPE_DATA_UNCONFIRMED_UP:
+ if( IsLoRaMacNetworkJoined == false )
+ {
+ return LORAMAC_STATUS_NO_NETWORK_JOINED; // No network has been joined yet
+ }
+
+ fCtrl->Bits.AdrAckReq = AdrNextDr( fCtrl->Bits.Adr, true, &ChannelsDatarate, &ChannelsTxPower );
+
+ if( ValidatePayloadLength( fBufferSize, ChannelsDatarate, MacCommandsBufferIndex ) == false )
+ {
+ return LORAMAC_STATUS_LENGTH_ERROR;
+ }
+
+ RxWindow1Delay = ReceiveDelay1 - RADIO_WAKEUP_TIME;
+ RxWindow2Delay = ReceiveDelay2 - RADIO_WAKEUP_TIME;
+
+ if( SrvAckRequested == true )
+ {
+ SrvAckRequested = false;
+ fCtrl->Bits.Ack = 1;
+ }
+
+ LoRaMacBuffer[pktHeaderLen++] = ( LoRaMacDevAddr ) & 0xFF;
+ LoRaMacBuffer[pktHeaderLen++] = ( LoRaMacDevAddr >> 8 ) & 0xFF;
+ LoRaMacBuffer[pktHeaderLen++] = ( LoRaMacDevAddr >> 16 ) & 0xFF;
+ LoRaMacBuffer[pktHeaderLen++] = ( LoRaMacDevAddr >> 24 ) & 0xFF;
+
+ LoRaMacBuffer[pktHeaderLen++] = fCtrl->Value;
+
+ LoRaMacBuffer[pktHeaderLen++] = UpLinkCounter & 0xFF;
+ LoRaMacBuffer[pktHeaderLen++] = ( UpLinkCounter >> 8 ) & 0xFF;
+
+ // Copy the MAC commands which must be re-send into the MAC command buffer
+ memcpy1( &MacCommandsBuffer[MacCommandsBufferIndex], MacCommandsBufferToRepeat, MacCommandsBufferToRepeatIndex );
+ MacCommandsBufferIndex += MacCommandsBufferToRepeatIndex;
+
+ if( ( payload != NULL ) && ( payloadSize > 0 ) )
+ {
+ if( ( MacCommandsBufferIndex <= LORA_MAC_COMMAND_MAX_LENGTH ) && ( MacCommandsInNextTx == true ) )
+ {
+ fCtrl->Bits.FOptsLen += MacCommandsBufferIndex;
+
+ // Update FCtrl field with new value of OptionsLength
+ LoRaMacBuffer[0x05] = fCtrl->Value;
+ for( i = 0; i < MacCommandsBufferIndex; i++ )
+ {
+ LoRaMacBuffer[pktHeaderLen++] = MacCommandsBuffer[i];
+ }
+ }
+ }
+ else
+ {
+ if( ( MacCommandsBufferIndex > 0 ) && ( MacCommandsInNextTx ) )
+ {
+ payloadSize = MacCommandsBufferIndex;
+ payload = MacCommandsBuffer;
+ framePort = 0;
+ }
+ }
+ MacCommandsInNextTx = false;
+ // Store MAC commands which must be re-send in case the device does not receive a downlink anymore
+ MacCommandsBufferToRepeatIndex = ParseMacCommandsToRepeat( MacCommandsBuffer, MacCommandsBufferIndex, MacCommandsBufferToRepeat );
+ if( MacCommandsBufferToRepeatIndex > 0 )
+ {
+ MacCommandsInNextTx = true;
+ }
+ MacCommandsBufferIndex = 0;
+
+ if( ( payload != NULL ) && ( payloadSize > 0 ) )
+ {
+ LoRaMacBuffer[pktHeaderLen++] = framePort;
+
+ if( framePort == 0 )
+ {
+ LoRaMacPayloadEncrypt( (uint8_t* ) payload, payloadSize, LoRaMacNwkSKey, LoRaMacDevAddr, UP_LINK, UpLinkCounter, LoRaMacPayload );
+ }
+ else
+ {
+ LoRaMacPayloadEncrypt( (uint8_t* ) payload, payloadSize, LoRaMacAppSKey, LoRaMacDevAddr, UP_LINK, UpLinkCounter, LoRaMacPayload );
+ }
+ memcpy1( LoRaMacBuffer + pktHeaderLen, LoRaMacPayload, payloadSize );
+ }
+ LoRaMacBufferPktLen = pktHeaderLen + payloadSize;
+
+ LoRaMacComputeMic( LoRaMacBuffer, LoRaMacBufferPktLen, LoRaMacNwkSKey, LoRaMacDevAddr, UP_LINK, UpLinkCounter, &mic );
+
+ LoRaMacBuffer[LoRaMacBufferPktLen + 0] = mic & 0xFF;
+ LoRaMacBuffer[LoRaMacBufferPktLen + 1] = ( mic >> 8 ) & 0xFF;
+ LoRaMacBuffer[LoRaMacBufferPktLen + 2] = ( mic >> 16 ) & 0xFF;
+ LoRaMacBuffer[LoRaMacBufferPktLen + 3] = ( mic >> 24 ) & 0xFF;
+
+ LoRaMacBufferPktLen += LORAMAC_MFR_LEN;
+
+ break;
+ case FRAME_TYPE_PROPRIETARY:
+ if( ( fBuffer != NULL ) && ( fBufferSize > 0 ) )
+ {
+ memcpy1( LoRaMacBuffer + pktHeaderLen, ( uint8_t* ) fBuffer, fBufferSize );
+ LoRaMacBufferPktLen = pktHeaderLen + fBufferSize;
+ }
+ break;
+ default:
+ return LORAMAC_STATUS_SERVICE_UNKNOWN;
+ }
+
+ return LORAMAC_STATUS_OK;
+}
+
+LoRaMacStatus_t SendFrameOnChannel( ChannelParams_t channel )
+{
+ int8_t datarate = Datarates[ChannelsDatarate];
+ int8_t txPowerIndex = 0;
+ int8_t txPower = 0;
+
+ txPowerIndex = LimitTxPower( ChannelsTxPower );
+ txPower = TxPowers[txPowerIndex];
+
+ MlmeConfirm.Status = LORAMAC_EVENT_INFO_STATUS_ERROR;
+ McpsConfirm.Status = LORAMAC_EVENT_INFO_STATUS_ERROR;
+ McpsConfirm.Datarate = ChannelsDatarate;
+ McpsConfirm.TxPower = txPowerIndex;
+
+ Radio.SetChannel( channel.Frequency );
+
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ if( ChannelsDatarate == DR_7 )
+ { // High Speed FSK channel
+ Radio.SetMaxPayloadLength( MODEM_FSK, LoRaMacBufferPktLen );
+ Radio.SetTxConfig( MODEM_FSK, txPower, 25e3, 0, datarate * 1e3, 0, 5, false, true, 0, 0, false, 3e6 );
+ TxTimeOnAir = Radio.TimeOnAir( MODEM_FSK, LoRaMacBufferPktLen );
+
+ }
+ else if( ChannelsDatarate == DR_6 )
+ { // High speed LoRa channel
+ Radio.SetMaxPayloadLength( MODEM_LORA, LoRaMacBufferPktLen );
+ Radio.SetTxConfig( MODEM_LORA, txPower, 0, 1, datarate, 1, 8, false, true, 0, 0, false, 3e6 );
+ TxTimeOnAir = Radio.TimeOnAir( MODEM_LORA, LoRaMacBufferPktLen );
+ }
+ else
+ { // Normal LoRa channel
+ Radio.SetMaxPayloadLength( MODEM_LORA, LoRaMacBufferPktLen );
+ Radio.SetTxConfig( MODEM_LORA, txPower, 0, 0, datarate, 1, 8, false, true, 0, 0, false, 3e6 );
+ TxTimeOnAir = Radio.TimeOnAir( MODEM_LORA, LoRaMacBufferPktLen );
+ }
+#elif defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ Radio.SetMaxPayloadLength( MODEM_LORA, LoRaMacBufferPktLen );
+ if( ChannelsDatarate >= DR_4 )
+ { // High speed LoRa channel BW500 kHz
+ Radio.SetTxConfig( MODEM_LORA, txPower, 0, 2, datarate, 1, 8, false, true, 0, 0, false, 3e6 );
+ TxTimeOnAir = Radio.TimeOnAir( MODEM_LORA, LoRaMacBufferPktLen );
+ }
+ else
+ { // Normal LoRa channel
+ Radio.SetTxConfig( MODEM_LORA, txPower, 0, 0, datarate, 1, 8, false, true, 0, 0, false, 3e6 );
+ TxTimeOnAir = Radio.TimeOnAir( MODEM_LORA, LoRaMacBufferPktLen );
+ }
+#else
+ #error "Please define a frequency band in the compiler options."
+#endif
+
+ // Store the time on air
+ McpsConfirm.TxTimeOnAir = TxTimeOnAir;
+ MlmeConfirm.TxTimeOnAir = TxTimeOnAir;
+
+ // Starts the MAC layer status check timer
+ TimerSetValue( &MacStateCheckTimer, MAC_STATE_CHECK_TIMEOUT );
+ TimerStart( &MacStateCheckTimer );
+
+ // Send now
+ Radio.Send( LoRaMacBuffer, LoRaMacBufferPktLen );
+
+ LoRaMacState |= MAC_TX_RUNNING;
+
+ return LORAMAC_STATUS_OK;
+}
+
+
+LoRaMacStatus_t LoRaMacInitialization( LoRaMacPrimitives_t *primitives, LoRaMacCallback_t *callbacks )
+{
+ if( primitives == NULL )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+
+ if( ( primitives->MacMcpsConfirm == NULL ) ||
+ ( primitives->MacMcpsIndication == NULL ) ||
+ ( primitives->MacMlmeConfirm == NULL ))
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+
+ LoRaMacPrimitives = primitives;
+ LoRaMacCallbacks = callbacks;
+
+ LoRaMacFlags.Value = 0;
+
+ LoRaMacDeviceClass = CLASS_A;
+
+ UpLinkCounter = 1;
+ DownLinkCounter = 0;
+ AdrAckCounter = 0;
+
+ ChannelsNbRepCounter = 0;
+
+ AckTimeoutRetries = 1;
+ AckTimeoutRetriesCounter = 1;
+ AckTimeoutRetry = false;
+
+ MaxDCycle = 0;
+ AggregatedDCycle = 1;
+
+ MacCommandsBufferIndex = 0;
+ MacCommandsBufferToRepeatIndex = 0;
+
+ IsRxWindowsEnabled = true;
+
+ RepeaterSupport = false;
+ IsRxWindowsEnabled = true;
+ IsLoRaMacNetworkJoined = false;
+ LoRaMacState = MAC_IDLE;
+
+ NodeAckRequested = false;
+ SrvAckRequested = false;
+ MacCommandsInNextTx = false;
+
+#if defined( USE_BAND_433 )
+ ChannelsMask[0] = LC( 1 ) + LC( 2 ) + LC( 3 );
+#elif defined( USE_BAND_780 )
+ ChannelsMask[0] = LC( 1 ) + LC( 2 ) + LC( 3 );
+#elif defined( USE_BAND_868 )
+ ChannelsMask[0] = LC( 1 ) + LC( 2 ) + LC( 3 );
+#elif defined( USE_BAND_915 )
+ ChannelsMask[0] = 0xFFFF;
+ ChannelsMask[1] = 0xFFFF;
+ ChannelsMask[2] = 0xFFFF;
+ ChannelsMask[3] = 0xFFFF;
+ ChannelsMask[4] = 0x00FF;
+ ChannelsMask[5] = 0x0000;
+
+ memcpy1( ( uint8_t* ) ChannelsMaskRemaining, ( uint8_t* ) ChannelsMask, sizeof( ChannelsMask ) );
+#elif defined( USE_BAND_915_HYBRID )
+ ChannelsMask[0] = 0x00FF;
+ ChannelsMask[1] = 0x0000;
+ ChannelsMask[2] = 0x0000;
+ ChannelsMask[3] = 0x0000;
+ ChannelsMask[4] = 0x0001;
+ ChannelsMask[5] = 0x0000;
+
+ memcpy1( ( uint8_t* ) ChannelsMaskRemaining, ( uint8_t* ) ChannelsMask, sizeof( ChannelsMask ) );
+#else
+ #error "Please define a frequency band in the compiler options."
+#endif
+
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ // 125 kHz channels
+ for( uint8_t i = 0; i < LORA_MAX_NB_CHANNELS - 8; i++ )
+ {
+ Channels[i].Frequency = 902.3e6 + i * 200e3;
+ Channels[i].DrRange.Value = ( DR_3 << 4 ) | DR_0;
+ Channels[i].Band = 0;
+ }
+ // 500 kHz channels
+ for( uint8_t i = LORA_MAX_NB_CHANNELS - 8; i < LORA_MAX_NB_CHANNELS; i++ )
+ {
+ Channels[i].Frequency = 903.0e6 + ( i - ( LORA_MAX_NB_CHANNELS - 8 ) ) * 1.6e6;
+ Channels[i].DrRange.Value = ( DR_4 << 4 ) | DR_4;
+ Channels[i].Band = 0;
+ }
+#endif
+
+ ChannelsTxPower = LORAMAC_DEFAULT_TX_POWER;
+ ChannelsDefaultDatarate = ChannelsDatarate = LORAMAC_DEFAULT_DATARATE;
+ ChannelsNbRep = 1;
+ ChannelsNbRepCounter = 0;
+
+ Rx2Channel.Frequency = 923300000;
+ Rx2Channel.Datarate = DR_8;
+ Rx1DrOffset = 0;
+
+
+ MaxDCycle = 0;
+ AggregatedDCycle = 1;
+ AggregatedLastTxDoneTime = 0;
+ AggregatedTimeOff = 0;
+
+#if defined( USE_BAND_433 )
+ DutyCycleOn = false;
+#elif defined( USE_BAND_780 )
+ DutyCycleOn = false;
+#elif defined( USE_BAND_868 )
+ DutyCycleOn = true;
+#elif defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ DutyCycleOn = false;
+#else
+ #error "Please define a frequency band in the compiler options."
+#endif
+
+ MaxRxWindow = MAX_RX_WINDOW;
+ ReceiveDelay1 = RECEIVE_DELAY1;
+ ReceiveDelay2 = RECEIVE_DELAY2;
+ JoinAcceptDelay1 = JOIN_ACCEPT_DELAY1;
+ JoinAcceptDelay2 = JOIN_ACCEPT_DELAY2;
+
+#if defined( USE_BAND_915 )
+ NextJoinBlock = 0;
+ LastJoinBlock = -1;
+ JoinBlocksRemaining = 0xff;
+ Join500KHzRemaining = 0xff;
+#endif
+
+ LastJoinTxTime = 0;
+ JoinAggTimeOnAir = 0;
+
+ TimerInit( &MacStateCheckTimer, OnMacStateCheckTimerEvent );
+ TimerSetValue( &MacStateCheckTimer, MAC_STATE_CHECK_TIMEOUT );
+
+ TimerInit( &TxDelayedTimer, OnTxDelayedTimerEvent );
+ TimerInit( &RxWindowTimer1, OnRxWindow1TimerEvent );
+ TimerInit( &RxWindowTimer2, OnRxWindow2TimerEvent );
+ TimerInit( &AckTimeoutTimer, OnAckTimeoutTimerEvent );
+
+ // Initialize Radio driver
+ RadioEvents.TxDone = OnRadioTxDone;
+ RadioEvents.RxDone = OnRadioRxDone;
+ RadioEvents.RxError = OnRadioRxError;
+ RadioEvents.TxTimeout = OnRadioTxTimeout;
+ RadioEvents.RxTimeout = OnRadioRxTimeout;
+ Radio.Init( &RadioEvents );
+
+ // Random seed initialization
+ srand1( Radio.Random( ) );
+
+ // Initialize channel index.
+ Channel = LORA_MAX_NB_CHANNELS;
+
+ PublicNetwork = true;
+ SetPublicNetwork( PublicNetwork );
+ Radio.Sleep( );
+
+ return LORAMAC_STATUS_OK;
+}
+
+LoRaMacStatus_t LoRaMacQueryTxPossible( uint8_t size, LoRaMacTxInfo_t* txInfo )
+{
+ int8_t datarate = ChannelsDefaultDatarate;
+ uint8_t fOptLen = MacCommandsBufferIndex + MacCommandsBufferToRepeatIndex;
+
+ if( txInfo == NULL )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+
+ AdrNextDr( AdrCtrlOn, false, &datarate, NULL );
+
+ if( RepeaterSupport == true )
+ {
+ txInfo->CurrentPayloadSize = MaxPayloadOfDatarateRepeater[datarate];
+ }
+ else
+ {
+ txInfo->CurrentPayloadSize = MaxPayloadOfDatarate[datarate];
+ }
+
+ if( txInfo->CurrentPayloadSize >= fOptLen )
+ {
+ txInfo->MaxPossiblePayload = txInfo->CurrentPayloadSize - fOptLen;
+ }
+ else
+ {
+ return LORAMAC_STATUS_MAC_CMD_LENGTH_ERROR;
+ }
+
+ if( ValidatePayloadLength( size, datarate, 0 ) == false )
+ {
+ return LORAMAC_STATUS_LENGTH_ERROR;
+ }
+
+ if( ValidatePayloadLength( size, datarate, fOptLen ) == false )
+ {
+ return LORAMAC_STATUS_MAC_CMD_LENGTH_ERROR;
+ }
+
+ return LORAMAC_STATUS_OK;
+}
+
+LoRaMacStatus_t LoRaMacMibGetRequestConfirm( MibRequestConfirm_t *mibGet )
+{
+ LoRaMacStatus_t status = LORAMAC_STATUS_OK;
+
+ if( mibGet == NULL )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+
+ switch( mibGet->Type )
+ {
+ case MIB_DEVICE_CLASS:
+ {
+ mibGet->Param.Class = LoRaMacDeviceClass;
+ break;
+ }
+ case MIB_NETWORK_JOINED:
+ {
+ mibGet->Param.IsNetworkJoined = IsLoRaMacNetworkJoined;
+ break;
+ }
+ case MIB_ADR:
+ {
+ mibGet->Param.AdrEnable = AdrCtrlOn;
+ break;
+ }
+ case MIB_NET_ID:
+ {
+ mibGet->Param.NetID = LoRaMacNetID;
+ break;
+ }
+ case MIB_DEV_ADDR:
+ {
+ mibGet->Param.DevAddr = LoRaMacDevAddr;
+ break;
+ }
+ case MIB_NWK_SKEY:
+ {
+ mibGet->Param.NwkSKey = LoRaMacNwkSKey;
+ break;
+ }
+ case MIB_APP_SKEY:
+ {
+ mibGet->Param.AppSKey = LoRaMacAppSKey;
+ break;
+ }
+ case MIB_PUBLIC_NETWORK:
+ {
+ mibGet->Param.EnablePublicNetwork = PublicNetwork;
+ break;
+ }
+ case MIB_REPEATER_SUPPORT:
+ {
+ mibGet->Param.EnableRepeaterSupport = RepeaterSupport;
+ break;
+ }
+ case MIB_CHANNELS:
+ {
+ mibGet->Param.ChannelList = Channels;
+ break;
+ }
+ case MIB_RX2_CHANNEL:
+ {
+ mibGet->Param.Rx2Channel = Rx2Channel;
+ break;
+ }
+ case MIB_CHANNELS_MASK:
+ {
+ mibGet->Param.ChannelsMask = ChannelsMask;
+ break;
+ }
+ case MIB_CHANNELS_NB_REP:
+ {
+ mibGet->Param.ChannelNbRep = ChannelsNbRep;
+ break;
+ }
+ case MIB_MAX_RX_WINDOW_DURATION:
+ {
+ mibGet->Param.MaxRxWindow = MaxRxWindow;
+ break;
+ }
+ case MIB_RECEIVE_DELAY_1:
+ {
+ mibGet->Param.ReceiveDelay1 = ReceiveDelay1;
+ break;
+ }
+ case MIB_RECEIVE_DELAY_2:
+ {
+ mibGet->Param.ReceiveDelay2 = ReceiveDelay2;
+ break;
+ }
+ case MIB_JOIN_ACCEPT_DELAY_1:
+ {
+ mibGet->Param.JoinAcceptDelay1 = JoinAcceptDelay1;
+ break;
+ }
+ case MIB_JOIN_ACCEPT_DELAY_2:
+ {
+ mibGet->Param.JoinAcceptDelay2 = JoinAcceptDelay2;
+ break;
+ }
+ case MIB_CHANNELS_DEFAULT_DATARATE:
+ {
+ mibGet->Param.ChannelsDefaultDatarate = ChannelsDefaultDatarate;
+ break;
+ }
+ case MIB_CHANNELS_DATARATE:
+ {
+ mibGet->Param.ChannelsDatarate = ChannelsDatarate;
+ break;
+ }
+ case MIB_CHANNELS_TX_POWER:
+ {
+ mibGet->Param.ChannelsTxPower = ChannelsTxPower;
+ break;
+ }
+ case MIB_UPLINK_COUNTER:
+ {
+ mibGet->Param.UpLinkCounter = UpLinkCounter;
+ break;
+ }
+ case MIB_DOWNLINK_COUNTER:
+ {
+ mibGet->Param.DownLinkCounter = DownLinkCounter;
+ break;
+ }
+ case MIB_MULTICAST_CHANNEL:
+ {
+ mibGet->Param.MulticastList = MulticastChannels;
+ break;
+ }
+ default:
+ status = LORAMAC_STATUS_SERVICE_UNKNOWN;
+ break;
+ }
+
+ return status;
+}
+
+LoRaMacStatus_t LoRaMacMibSetRequestConfirm( MibRequestConfirm_t *mibSet )
+{
+ LoRaMacStatus_t status = LORAMAC_STATUS_OK;
+
+ if( mibSet == NULL )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ if( ( LoRaMacState & MAC_TX_RUNNING ) == MAC_TX_RUNNING )
+ {
+ return LORAMAC_STATUS_BUSY;
+ }
+
+ switch( mibSet->Type )
+ {
+ case MIB_DEVICE_CLASS:
+ {
+ LoRaMacDeviceClass = mibSet->Param.Class;
+ switch( LoRaMacDeviceClass )
+ {
+ case CLASS_A:
+ {
+ // Set the radio into sleep to setup a defined state
+ Radio.Sleep( );
+ break;
+ }
+ case CLASS_B:
+ {
+ break;
+ }
+ case CLASS_C:
+ {
+ // Set the NodeAckRequested indicator to default
+ NodeAckRequested = false;
+ OnRxWindow2TimerEvent( );
+ break;
+ }
+ }
+ break;
+ }
+ case MIB_NETWORK_JOINED:
+ {
+ IsLoRaMacNetworkJoined = mibSet->Param.IsNetworkJoined;
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ if( IsLoRaMacNetworkJoined == false )
+ {
+ NextJoinBlock = 0;
+ JoinBlocksRemaining = 0xff;
+ Join500KHzRemaining = 0xff;
+ }
+#endif
+ break;
+ }
+ case MIB_ADR:
+ {
+ AdrCtrlOn = mibSet->Param.AdrEnable;
+ break;
+ }
+ case MIB_NET_ID:
+ {
+ LoRaMacNetID = mibSet->Param.NetID;
+ break;
+ }
+ case MIB_DEV_ADDR:
+ {
+ LoRaMacDevAddr = mibSet->Param.DevAddr;
+ break;
+ }
+ case MIB_NWK_SKEY:
+ {
+ if( mibSet->Param.NwkSKey != NULL )
+ {
+ memcpy1( LoRaMacNwkSKey, mibSet->Param.NwkSKey,
+ sizeof( LoRaMacNwkSKey ) );
+ }
+ else
+ {
+ status = LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ break;
+ }
+ case MIB_APP_SKEY:
+ {
+ if( mibSet->Param.AppSKey != NULL )
+ {
+ memcpy1( LoRaMacAppSKey, mibSet->Param.AppSKey,
+ sizeof( LoRaMacAppSKey ) );
+ }
+ else
+ {
+ status = LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ break;
+ }
+ case MIB_PUBLIC_NETWORK:
+ {
+ SetPublicNetwork( mibSet->Param.EnablePublicNetwork );
+ break;
+ }
+ case MIB_REPEATER_SUPPORT:
+ {
+ RepeaterSupport = mibSet->Param.EnableRepeaterSupport;
+ break;
+ }
+ case MIB_RX2_CHANNEL:
+ {
+ Rx2Channel = mibSet->Param.Rx2Channel;
+ break;
+ }
+ case MIB_CHANNELS_MASK:
+ {
+ if( mibSet->Param.ChannelsMask )
+ {
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ bool chanMaskState = true;
+
+#if defined( USE_BAND_915_HYBRID )
+ chanMaskState = ValidateChannelMask( mibSet->Param.ChannelsMask );
+#endif
+ if( chanMaskState == true )
+ {
+ if( ( CountNbEnabled125kHzChannels( mibSet->Param.ChannelsMask ) < HYBRD_CHNLS_MIN ) &&
+ ( CountNbEnabled125kHzChannels( mibSet->Param.ChannelsMask ) > 0 ) )
+ {
+ status = LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ else
+ {
+ memcpy1( ( uint8_t* ) ChannelsMask,
+ ( uint8_t* ) mibSet->Param.ChannelsMask, sizeof( ChannelsMask ) );
+ for ( uint8_t i = 0; i < sizeof( ChannelsMask ) / 2; i++ )
+ {
+ // Disable channels which are no longer available
+ ChannelsMaskRemaining[i] &= ChannelsMask[i];
+ }
+ }
+ }
+ else
+ {
+ status = LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+#else
+ memcpy1( ( uint8_t* ) ChannelsMask,
+ ( uint8_t* ) mibSet->Param.ChannelsMask, 2 );
+#endif
+ }
+ else
+ {
+ status = LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ break;
+ }
+ case MIB_CHANNELS_NB_REP:
+ {
+ if( ( mibSet->Param.ChannelNbRep >= 1 ) &&
+ ( mibSet->Param.ChannelNbRep <= 15 ) )
+ {
+ ChannelsNbRep = mibSet->Param.ChannelNbRep;
+ }
+ else
+ {
+ status = LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ break;
+ }
+ case MIB_MAX_RX_WINDOW_DURATION:
+ {
+ MaxRxWindow = mibSet->Param.MaxRxWindow;
+ break;
+ }
+ case MIB_RECEIVE_DELAY_1:
+ {
+ ReceiveDelay1 = mibSet->Param.ReceiveDelay1;
+ break;
+ }
+ case MIB_RECEIVE_DELAY_2:
+ {
+ ReceiveDelay2 = mibSet->Param.ReceiveDelay2;
+ break;
+ }
+ case MIB_JOIN_ACCEPT_DELAY_1:
+ {
+ JoinAcceptDelay1 = mibSet->Param.JoinAcceptDelay1;
+ break;
+ }
+ case MIB_JOIN_ACCEPT_DELAY_2:
+ {
+ JoinAcceptDelay2 = mibSet->Param.JoinAcceptDelay2;
+ break;
+ }
+ case MIB_CHANNELS_DEFAULT_DATARATE:
+ {
+ if( ValueInRange( mibSet->Param.ChannelsDefaultDatarate,
+ LORAMAC_TX_MIN_DATARATE, LORAMAC_TX_MAX_DATARATE ) )
+ {
+ ChannelsDefaultDatarate = mibSet->Param.ChannelsDefaultDatarate;
+ }
+ else
+ {
+ status = LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ break;
+ }
+ case MIB_CHANNELS_DATARATE:
+ {
+ if( ValueInRange( mibSet->Param.ChannelsDatarate,
+ LORAMAC_TX_MIN_DATARATE, LORAMAC_TX_MAX_DATARATE ) )
+ {
+ ChannelsDatarate = mibSet->Param.ChannelsDatarate;
+ }
+ else
+ {
+ status = LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ break;
+ }
+ case MIB_CHANNELS_TX_POWER:
+ {
+ if( ValueInRange( mibSet->Param.ChannelsTxPower,
+ LORAMAC_MAX_TX_POWER, LORAMAC_MIN_TX_POWER ) )
+ {
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ int8_t txPower = LimitTxPower( mibSet->Param.ChannelsTxPower );
+ if( txPower == mibSet->Param.ChannelsTxPower )
+ {
+ ChannelsTxPower = mibSet->Param.ChannelsTxPower;
+ }
+ else
+ {
+ status = LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+#else
+ ChannelsTxPower = mibSet->Param.ChannelsTxPower;
+#endif
+ }
+ else
+ {
+ status = LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ break;
+ }
+ case MIB_UPLINK_COUNTER:
+ {
+ UpLinkCounter = mibSet->Param.UpLinkCounter;
+ break;
+ }
+ case MIB_DOWNLINK_COUNTER:
+ {
+ DownLinkCounter = mibSet->Param.DownLinkCounter;
+ break;
+ }
+ default:
+ status = LORAMAC_STATUS_SERVICE_UNKNOWN;
+ break;
+ }
+
+ return status;
+}
+
+LoRaMacStatus_t LoRaMacChannelAdd( uint8_t id, ChannelParams_t params )
+{
+#if ( defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID ) )
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+#else
+ bool datarateInvalid = false;
+ bool frequencyInvalid = false;
+ uint8_t band = 0;
+
+ // The id must not exceed LORA_MAX_NB_CHANNELS
+ if( id >= LORA_MAX_NB_CHANNELS )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ // Validate if the MAC is in a correct state
+ if( ( LoRaMacState & MAC_TX_RUNNING ) == MAC_TX_RUNNING )
+ {
+ if( ( LoRaMacState & MAC_TX_CONFIG ) != MAC_TX_CONFIG )
+ {
+ return LORAMAC_STATUS_BUSY;
+ }
+ }
+ // Validate the datarate
+ if( ( params.DrRange.Fields.Min > params.DrRange.Fields.Max ) ||
+ ( ValueInRange( params.DrRange.Fields.Min, LORAMAC_TX_MIN_DATARATE,
+ LORAMAC_TX_MAX_DATARATE ) == false ) ||
+ ( ValueInRange( params.DrRange.Fields.Max, LORAMAC_TX_MIN_DATARATE,
+ LORAMAC_TX_MAX_DATARATE ) == false ) )
+ {
+ datarateInvalid = true;
+ }
+
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ if( id < 3 )
+ {
+ if( params.Frequency != Channels[id].Frequency )
+ {
+ frequencyInvalid = true;
+ }
+
+ if( params.DrRange.Fields.Min > ChannelsDefaultDatarate )
+ {
+ datarateInvalid = true;
+ }
+ if( ValueInRange( params.DrRange.Fields.Max, DR_5, LORAMAC_TX_MAX_DATARATE ) == false )
+ {
+ datarateInvalid = true;
+ }
+ }
+#endif
+
+ // Validate the frequency
+ if( ( Radio.CheckRfFrequency( params.Frequency ) == true ) && ( params.Frequency > 0 ) && ( frequencyInvalid == false ) )
+ {
+#if defined( USE_BAND_868 )
+ if( ( params.Frequency >= 865000000 ) && ( params.Frequency <= 868000000 ) )
+ {
+ band = BAND_G1_0;
+ }
+ else if( ( params.Frequency > 868000000 ) && ( params.Frequency <= 868600000 ) )
+ {
+ band = BAND_G1_1;
+ }
+ else if( ( params.Frequency >= 868700000 ) && ( params.Frequency <= 869200000 ) )
+ {
+ band = BAND_G1_2;
+ }
+ else if( ( params.Frequency >= 869400000 ) && ( params.Frequency <= 869650000 ) )
+ {
+ band = BAND_G1_3;
+ }
+ else if( ( params.Frequency >= 869700000 ) && ( params.Frequency <= 870000000 ) )
+ {
+ band = BAND_G1_4;
+ }
+ else
+ {
+ frequencyInvalid = true;
+ }
+#endif
+ }
+ else
+ {
+ frequencyInvalid = true;
+ }
+
+ if( ( datarateInvalid == true ) && ( frequencyInvalid == true ) )
+ {
+ return LORAMAC_STATUS_FREQ_AND_DR_INVALID;
+ }
+ if( datarateInvalid == true )
+ {
+ return LORAMAC_STATUS_DATARATE_INVALID;
+ }
+ if( frequencyInvalid == true )
+ {
+ return LORAMAC_STATUS_FREQUENCY_INVALID;
+ }
+
+ // Every parameter is valid, activate the channel
+ Channels[id] = params;
+ Channels[id].Band = band;
+ ChannelsMask[0] |= ( 1 << id );
+
+ return LORAMAC_STATUS_OK;
+#endif
+}
+
+LoRaMacStatus_t LoRaMacChannelRemove( uint8_t id )
+{
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+ if( ( LoRaMacState & MAC_TX_RUNNING ) == MAC_TX_RUNNING )
+ {
+ if( ( LoRaMacState & MAC_TX_CONFIG ) != MAC_TX_CONFIG )
+ {
+ return LORAMAC_STATUS_BUSY;
+ }
+ }
+
+ if( ( id < 3 ) || ( id >= LORA_MAX_NB_CHANNELS ) )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ else
+ {
+ // Remove the channel from the list of channels
+ Channels[id] = ( ChannelParams_t ){ 0, { 0 }, 0 };
+
+ // Disable the channel as it doesn't exist anymore
+ if( DisableChannelInMask( id, ChannelsMask ) == false )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ }
+ return LORAMAC_STATUS_OK;
+#elif ( defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID ) )
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+#endif
+}
+
+LoRaMacStatus_t LoRaMacMulticastChannelLink( MulticastParams_t *channelParam )
+{
+ if( channelParam == NULL )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ if( ( LoRaMacState & MAC_TX_RUNNING ) == MAC_TX_RUNNING )
+ {
+ return LORAMAC_STATUS_BUSY;
+ }
+
+ // Reset downlink counter
+ channelParam->DownLinkCounter = 0;
+
+ if( MulticastChannels == NULL )
+ {
+ // New node is the fist element
+ MulticastChannels = channelParam;
+ }
+ else
+ {
+ MulticastParams_t *cur = MulticastChannels;
+
+ // Search the last node in the list
+ while( cur->Next != NULL )
+ {
+ cur = cur->Next;
+ }
+ // This function always finds the last node
+ cur->Next = channelParam;
+ }
+
+ return LORAMAC_STATUS_OK;
+}
+
+LoRaMacStatus_t LoRaMacMulticastChannelUnlink( MulticastParams_t *channelParam )
+{
+ if( channelParam == NULL )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ if( ( LoRaMacState & MAC_TX_RUNNING ) == MAC_TX_RUNNING )
+ {
+ return LORAMAC_STATUS_BUSY;
+ }
+
+ if( MulticastChannels != NULL )
+ {
+ if( MulticastChannels == channelParam )
+ {
+ // First element
+ MulticastChannels = channelParam->Next;
+ }
+ else
+ {
+ MulticastParams_t *cur = MulticastChannels;
+
+ // Search the node in the list
+ while( cur->Next && cur->Next != channelParam )
+ {
+ cur = cur->Next;
+ }
+ // If we found the node, remove it
+ if( cur->Next )
+ {
+ cur->Next = channelParam->Next;
+ }
+ }
+ channelParam->Next = NULL;
+ }
+
+ return LORAMAC_STATUS_OK;
+}
+
+LoRaMacStatus_t LoRaMacMlmeRequest( MlmeReq_t *mlmeRequest )
+{
+ LoRaMacStatus_t status = LORAMAC_STATUS_SERVICE_UNKNOWN;
+ LoRaMacHeader_t macHdr;
+
+ if( mlmeRequest == NULL )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ if( ( LoRaMacState & MAC_TX_RUNNING ) == MAC_TX_RUNNING )
+ {
+ return LORAMAC_STATUS_BUSY;
+ }
+
+ memset1( ( uint8_t* ) &MlmeConfirm, 0, sizeof( MlmeConfirm ) );
+
+ MlmeConfirm.Status = LORAMAC_EVENT_INFO_STATUS_ERROR;
+
+ switch( mlmeRequest->Type )
+ {
+ case MLME_JOIN:
+ {
+ if( ( LoRaMacState & MAC_TX_DELAYED ) == MAC_TX_DELAYED )
+ {
+ return LORAMAC_STATUS_BUSY;
+ }
+
+ MlmeConfirm.MlmeRequest = mlmeRequest->Type;
+
+ if( ( mlmeRequest->Req.Join.DevEui == NULL ) ||
+ ( mlmeRequest->Req.Join.AppEui == NULL ) ||
+ ( mlmeRequest->Req.Join.AppKey == NULL ) )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+
+ LoRaMacFlags.Bits.MlmeReq = 1;
+
+ LoRaMacDevEui = mlmeRequest->Req.Join.DevEui;
+ LoRaMacAppEui = mlmeRequest->Req.Join.AppEui;
+ LoRaMacAppKey = mlmeRequest->Req.Join.AppKey;
+
+// Disable join retransmission dutycycle as it does not currently
+// handle device reset
+#if 0
+ if( LoRaMacCalcJoinBackOff( ) != 0 )
+ {
+ return LORAMAC_STATUS_TX_DCYCLE_EXCEEDED;
+ }
+#endif
+
+ macHdr.Value = 0;
+ macHdr.Bits.MType = FRAME_TYPE_JOIN_REQ;
+
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+ if ( IsLoRaMacNetworkJoined == true )
+ {
+ NextJoinBlock = 0;
+ JoinBlocksRemaining = 0xff;
+ Join500KHzRemaining = 0xff;
+ IsLoRaMacNetworkJoined = false;
+ }
+#endif
+
+#if defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+#if defined( USE_BAND_915 )
+ // Re-enable 500 kHz default channels
+ ChannelsMask[4] = 0x00FF;
+#else // defined( USE_BAND_915_HYBRID )
+ // Re-enable 500 kHz default channels
+ ChannelsMask[4] = 0x0001;
+#endif
+
+ static uint8_t drSwitch = 0;
+
+ if( ( ++drSwitch & 0x01 ) == 0x01 )
+ {
+ ChannelsDatarate = DR_0;
+ }
+ else
+ {
+ ChannelsDatarate = DR_4;
+ }
+#endif
+
+ status = Send( &macHdr, 0, NULL, 0 );
+ break;
+ }
+ case MLME_LINK_CHECK:
+ {
+ LoRaMacFlags.Bits.MlmeReq = 1;
+ // LoRaMac will send this command piggy-pack
+ MlmeConfirm.MlmeRequest = mlmeRequest->Type;
+
+ status = AddMacCommand( MOTE_MAC_LINK_CHECK_REQ, 0, 0 );
+ break;
+ }
+ default:
+ break;
+ }
+
+ if( status != LORAMAC_STATUS_OK )
+ {
+ NodeAckRequested = false;
+ LoRaMacFlags.Bits.MlmeReq = 0;
+ }
+
+ return status;
+}
+
+LoRaMacStatus_t LoRaMacMcpsRequest( McpsReq_t *mcpsRequest )
+{
+ LoRaMacStatus_t status = LORAMAC_STATUS_SERVICE_UNKNOWN;
+ LoRaMacHeader_t macHdr;
+ uint8_t fPort = 0;
+ void *fBuffer;
+ uint16_t fBufferSize;
+ int8_t datarate;
+ bool readyToSend = false;
+
+ if( mcpsRequest == NULL )
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ if( ( ( LoRaMacState & MAC_TX_RUNNING ) == MAC_TX_RUNNING ) ||
+ ( ( LoRaMacState & MAC_TX_DELAYED ) == MAC_TX_DELAYED ) )
+ {
+ return LORAMAC_STATUS_BUSY;
+ }
+
+ macHdr.Value = 0;
+ memset1 ( ( uint8_t* ) &McpsConfirm, 0, sizeof( McpsConfirm ) );
+ McpsConfirm.Status = LORAMAC_EVENT_INFO_STATUS_ERROR;
+
+ switch( mcpsRequest->Type )
+ {
+ case MCPS_UNCONFIRMED:
+ {
+ readyToSend = true;
+ AckTimeoutRetries = 1;
+
+ macHdr.Bits.MType = FRAME_TYPE_DATA_UNCONFIRMED_UP;
+ fPort = mcpsRequest->Req.Unconfirmed.fPort;
+ fBuffer = mcpsRequest->Req.Unconfirmed.fBuffer;
+ fBufferSize = mcpsRequest->Req.Unconfirmed.fBufferSize;
+ datarate = mcpsRequest->Req.Unconfirmed.Datarate;
+ break;
+ }
+ case MCPS_CONFIRMED:
+ {
+ readyToSend = true;
+ AckTimeoutRetriesCounter = 1;
+ AckTimeoutRetries = mcpsRequest->Req.Confirmed.NbTrials;
+
+ macHdr.Bits.MType = FRAME_TYPE_DATA_CONFIRMED_UP;
+ fPort = mcpsRequest->Req.Confirmed.fPort;
+ fBuffer = mcpsRequest->Req.Confirmed.fBuffer;
+ fBufferSize = mcpsRequest->Req.Confirmed.fBufferSize;
+ datarate = mcpsRequest->Req.Confirmed.Datarate;
+ break;
+ }
+ case MCPS_PROPRIETARY:
+ {
+ readyToSend = true;
+ AckTimeoutRetries = 1;
+
+ macHdr.Bits.MType = FRAME_TYPE_PROPRIETARY;
+ fBuffer = mcpsRequest->Req.Proprietary.fBuffer;
+ fBufferSize = mcpsRequest->Req.Proprietary.fBufferSize;
+ datarate = mcpsRequest->Req.Proprietary.Datarate;
+ break;
+ }
+ default:
+ break;
+ }
+
+ if( readyToSend == true )
+ {
+ if( AdrCtrlOn == false )
+ {
+ if( ValueInRange( datarate, LORAMAC_TX_MIN_DATARATE, LORAMAC_TX_MAX_DATARATE ) == true )
+ {
+ ChannelsDatarate = datarate;
+ }
+ else
+ {
+ return LORAMAC_STATUS_PARAMETER_INVALID;
+ }
+ }
+
+ status = Send( &macHdr, fPort, fBuffer, fBufferSize );
+ if( status == LORAMAC_STATUS_OK )
+ {
+ McpsConfirm.McpsRequest = mcpsRequest->Type;
+ LoRaMacFlags.Bits.McpsReq = 1;
+ }
+ else
+ {
+ NodeAckRequested = false;
+ }
+ }
+
+ return status;
+}
+
+TimerTime_t LoRaMacCalcJoinBackOff( )
+{
+ TimerTime_t timeOff = 0;
+ TimerTime_t uptime;
+ TimerTime_t currDCycleEndTime;
+ TimerTime_t prevDCycleEndTime;
+ TimerTime_t period;
+ TimerTime_t onAirTimeMax;
+ TimerTime_t lastJoinTime;
+ TimerTime_t elapsedTime;
+ uint8_t dcyclePeriod;
+
+ // Check retransmit duty-cycle is enabled
+ if ( JOIN_NB_RETRANSMISSION_DCYCLES == 0 )
+ return 0;
+
+ // Normalize system time values to seconds
+ uptime = TimerGetCurrentTime( ) / 1e6;
+ lastJoinTime = LastJoinTxTime / 1e6;
+
+ // Get dutycycle for current time
+ prevDCycleEndTime = 0;
+ currDCycleEndTime = 0;
+ for(dcyclePeriod = 0; dcyclePeriod < JOIN_NB_RETRANSMISSION_DCYCLES; dcyclePeriod++)
+ {
+ prevDCycleEndTime = currDCycleEndTime;
+ currDCycleEndTime += JoinReTransmitDCycle[dcyclePeriod].period;
+
+ bool isCurrentPeriod = uptime < currDCycleEndTime;
+
+ if( isCurrentPeriod || ( dcyclePeriod == ( JOIN_NB_RETRANSMISSION_DCYCLES-1 ) ) )
+ {
+ period = JoinReTransmitDCycle[dcyclePeriod].period;
+ onAirTimeMax = JoinReTransmitDCycle[dcyclePeriod].onAirTimeMax;
+ if( isCurrentPeriod == true )
+ break;
+ }
+ }
+
+ // Clear aggregate on air time if dutycycle period of last join has elapsed
+ if( lastJoinTime < prevDCycleEndTime )
+ {
+ JoinAggTimeOnAir = 0;
+ }
+ else
+ {
+ elapsedTime = ( uptime - prevDCycleEndTime ) % period;
+
+ if( dcyclePeriod == JOIN_NB_RETRANSMISSION_DCYCLES )
+ {
+ if( ( ( uptime - prevDCycleEndTime ) / period ) > ( ( lastJoinTime - prevDCycleEndTime ) / period ) )
+ {
+ JoinAggTimeOnAir = 0;
+ }
+ }
+ }
+
+ if ( JoinAggTimeOnAir >= onAirTimeMax )
+ {
+ // time off is remaining time until beginning of next period
+ timeOff = ( period - elapsedTime );
+ }
+
+
+ if(timeOff > JOIN_RETRANSMISSION_DC_WAIT_MAX)
+ timeOff = JOIN_RETRANSMISSION_DC_WAIT_MAX;
+
+ return ( timeOff * 1e6 );
+}
+
+void LoRaMacTestRxWindowsOn( bool enable )
+{
+ IsRxWindowsEnabled = enable;
+}
+
+void LoRaMacTestSetMic( uint16_t txPacketCounter )
+{
+ UpLinkCounter = txPacketCounter;
+ IsUpLinkCounterFixed = true;
+}
+
+void LoRaMacTestSetDutyCycleOn( bool enable )
+{
+ DutyCycleOn = enable;
+}
