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Diff: mac/LoRaMac.h
- Revision:
- 0:9be122c18509
- Child:
- 3:675d14219ad5
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mac/LoRaMac.h Wed Aug 12 14:08:29 2015 +0000
@@ -0,0 +1,571 @@
+/*
+ / _____) _ | |
+( (____ _____ ____ _| |_ _____ ____| |__
+ \____ \| ___ | (_ _) ___ |/ ___) _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+(______/|_____)_|_|_| \__)_____)\____)_| |_|
+ (C)2013 Semtech
+
+Description: LoRa MAC layer implementation
+
+License: Revised BSD License, see LICENSE.TXT file include in the project
+
+Maintainer: Miguel Luis and Gregory Cristian
+*/
+#ifndef __LORAMAC_H__
+#define __LORAMAC_H__
+
+// Includes board dependent definitions such as channels frequencies
+#include "LoRaMac-board.h"
+
+#if defined(__CC_ARM) || defined(__GNUC__)
+#define PACKED __attribute__( ( __packed__ ) )
+#elif defined( __ICCARM__ )
+#define PACKED __packed
+#else
+ #warning Not supported compiler type
+#endif
+/*!
+ * Beacon interval in ms
+ */
+#define BEACON_INTERVAL 128000000
+
+/*!
+ * Class A&B receive delay in ms
+ */
+#define RECEIVE_DELAY1 1000000
+#define RECEIVE_DELAY2 2000000
+
+/*!
+ * Join accept receive delay in ms
+ */
+#define JOIN_ACCEPT_DELAY1 5000000
+#define JOIN_ACCEPT_DELAY2 6000000
+
+/*!
+ * Class A&B maximum receive window delay in ms
+ */
+#define MAX_RX_WINDOW 3000000
+
+/*!
+ * Maximum allowed gap for the FCNT field
+ */
+#define MAX_FCNT_GAP 16384
+
+/*!
+ * ADR acknowledgement counter limit
+ */
+#define ADR_ACK_LIMIT 64
+
+/*!
+ * Number of ADR acknowledgement requests before returning to default datarate
+ */
+#define ADR_ACK_DELAY 32
+
+/*!
+ * Number of seconds after the start of the second reception window without
+ * receiving an acknowledge.
+ * AckTimeout = ACK_TIMEOUT + Random( -ACK_TIMEOUT_RND, ACK_TIMEOUT_RND )
+ */
+#define ACK_TIMEOUT 2000000
+
+/*!
+ * Random number of seconds after the start of the second reception window without
+ * receiving an acknowledge
+ * AckTimeout = ACK_TIMEOUT + Random( -ACK_TIMEOUT_RND, ACK_TIMEOUT_RND )
+ */
+#define ACK_TIMEOUT_RND 1000000
+
+/*!
+ * Check the Mac layer state every MAC_STATE_CHECK_TIMEOUT
+ */
+#define MAC_STATE_CHECK_TIMEOUT 1000000
+
+/*!
+ * Maximum number of times the MAC layer tries to get an acknowledge.
+ */
+#define MAX_ACK_RETRIES 8
+
+/*!
+ * RSSI free threshold
+ */
+#define RSSI_FREE_TH ( int8_t )( -90 ) // [dBm]
+
+/*!
+ * Frame direction definition
+ */
+#define UP_LINK 0
+#define DOWN_LINK 1
+
+/*!
+ * Sets the length of the LoRaMAC footer field.
+ * Mainly indicates the MIC field length
+ */
+#define LORAMAC_MFR_LEN 4
+
+/*!
+ * Syncword for Private LoRa networks
+ */
+#define LORA_MAC_PRIVATE_SYNCWORD 0x12
+
+/*!
+ * Syncword for Public LoRa networks
+ */
+#define LORA_MAC_PUBLIC_SYNCWORD 0x34
+
+/*!
+ * LoRaWAN devices classes definition
+ */
+typedef enum
+{
+ CLASS_A,
+ CLASS_B,
+ CLASS_C,
+}DeviceClass_t;
+
+/*!
+ * LoRaMAC channels parameters definition
+ */
+typedef union
+{
+ int8_t Value;
+ struct
+ {
+ int8_t Min : 4;
+ int8_t Max : 4;
+ }PACKED Fields;
+}PACKED DrRange_t;
+
+typedef struct
+{
+ uint16_t DCycle;
+ int8_t TxMaxPower;
+ uint64_t LastTxDoneTime;
+ uint64_t TimeOff;
+}PACKED Band_t;
+
+typedef struct
+{
+ uint32_t Frequency; // Hz
+ DrRange_t DrRange; // Max datarate [0: SF12, 1: SF11, 2: SF10, 3: SF9, 4: SF8, 5: SF7, 6: SF7, 7: FSK]
+ // Min datarate [0: SF12, 1: SF11, 2: SF10, 3: SF9, 4: SF8, 5: SF7, 6: SF7, 7: FSK]
+ uint8_t Band; // Band index
+}PACKED ChannelParams_t;
+
+typedef struct
+{
+ uint32_t Frequency; // Hz
+ uint8_t Datarate; // [0: SF12, 1: SF11, 2: SF10, 3: SF9, 4: SF8, 5: SF7, 6: SF7, 7: FSK]
+}PACKED Rx2ChannelParams_t;
+
+typedef struct MulticastParams_s
+{
+ uint32_t Address;
+ uint8_t NwkSKey[16];
+ uint8_t AppSKey[16];
+ uint32_t DownLinkCounter;
+ struct MulticastParams_s *Next;
+}PACKED MulticastParams_t;
+
+/*!
+ * LoRaMAC frame types
+ */
+typedef enum
+{
+ FRAME_TYPE_JOIN_REQ = 0x00,
+ FRAME_TYPE_JOIN_ACCEPT = 0x01,
+ FRAME_TYPE_DATA_UNCONFIRMED_UP = 0x02,
+ FRAME_TYPE_DATA_UNCONFIRMED_DOWN = 0x03,
+ FRAME_TYPE_DATA_CONFIRMED_UP = 0x04,
+ FRAME_TYPE_DATA_CONFIRMED_DOWN = 0x05,
+ FRAME_TYPE_RFU = 0x06,
+ FRAME_TYPE_PROPRIETARY = 0x07,
+}PACKED LoRaMacFrameType_t;
+
+/*!
+ * LoRaMAC mote MAC commands
+ */
+typedef enum
+{
+ MOTE_MAC_LINK_CHECK_REQ = 0x02,
+ MOTE_MAC_LINK_ADR_ANS = 0x03,
+ MOTE_MAC_DUTY_CYCLE_ANS = 0x04,
+ MOTE_MAC_RX_PARAM_SETUP_ANS = 0x05,
+ MOTE_MAC_DEV_STATUS_ANS = 0x06,
+ MOTE_MAC_NEW_CHANNEL_ANS = 0x07,
+ MOTE_MAC_RX_TIMING_SETUP_ANS = 0x08,
+}PACKED LoRaMacMoteCmd_t;
+
+/*!
+ * LoRaMAC server MAC commands
+ */
+typedef enum
+{
+ SRV_MAC_LINK_CHECK_ANS = 0x02,
+ SRV_MAC_LINK_ADR_REQ = 0x03,
+ SRV_MAC_DUTY_CYCLE_REQ = 0x04,
+ SRV_MAC_RX_PARAM_SETUP_REQ = 0x05,
+ SRV_MAC_DEV_STATUS_REQ = 0x06,
+ SRV_MAC_NEW_CHANNEL_REQ = 0x07,
+ SRV_MAC_RX_TIMING_SETUP_REQ = 0x08,
+}PACKED LoRaMacSrvCmd_t;
+
+/*!
+ * LoRaMAC Battery level indicator
+ */
+typedef enum
+{
+ BAT_LEVEL_EXT_SRC = 0x00,
+ BAT_LEVEL_EMPTY = 0x01,
+ BAT_LEVEL_FULL = 0xFE,
+ BAT_LEVEL_NO_MEASURE = 0xFF,
+}PACKED LoRaMacBatteryLevel_t;
+
+/*!
+ * LoRaMAC header field definition
+ */
+typedef union
+{
+ uint8_t Value;
+ struct
+ {
+ uint8_t Major : 2;
+ uint8_t RFU : 3;
+ uint8_t MType : 3;
+ }PACKED Bits;
+}PACKED LoRaMacHeader_t;
+
+/*!
+ * LoRaMAC frame header field definition
+ */
+typedef union
+{
+ uint8_t Value;
+ struct
+ {
+ uint8_t FOptsLen : 4;
+ uint8_t FPending : 1;
+ uint8_t Ack : 1;
+ uint8_t AdrAckReq : 1;
+ uint8_t Adr : 1;
+ }PACKED Bits;
+}PACKED LoRaMacFrameCtrl_t;
+
+/*!
+ * LoRaMAC event flags
+ */
+typedef union
+{
+ uint8_t Value;
+ struct
+ {
+ uint8_t Tx : 1;
+ uint8_t Rx : 1;
+ uint8_t RxData : 1;
+ uint8_t Multicast : 1;
+ uint8_t RxSlot : 2;
+ uint8_t LinkCheck : 1;
+ uint8_t JoinAccept : 1;
+ }PACKED Bits;
+}PACKED LoRaMacEventFlags_t;
+
+typedef enum
+{
+ LORAMAC_EVENT_INFO_STATUS_OK = 0,
+ LORAMAC_EVENT_INFO_STATUS_ERROR,
+ LORAMAC_EVENT_INFO_STATUS_TX_TIMEOUT,
+ LORAMAC_EVENT_INFO_STATUS_RX2_TIMEOUT,
+ LORAMAC_EVENT_INFO_STATUS_RX2_ERROR,
+ LORAMAC_EVENT_INFO_STATUS_JOIN_FAIL,
+ LORAMAC_EVENT_INFO_STATUS_DOWNLINK_FAIL,
+ LORAMAC_EVENT_INFO_STATUS_ADDRESS_FAIL,
+ LORAMAC_EVENT_INFO_STATUS_MIC_FAIL,
+}PACKED LoRaMacEventInfoStatus_t;
+
+/*!
+ * LoRaMAC event information
+ */
+typedef struct
+{
+ LoRaMacEventInfoStatus_t Status;
+ bool TxAckReceived;
+ uint8_t TxNbRetries;
+ uint8_t TxDatarate;
+ uint8_t RxPort;
+ uint8_t *RxBuffer;
+ uint8_t RxBufferSize;
+ int16_t RxRssi;
+ uint8_t RxSnr;
+ uint16_t Energy;
+ uint8_t DemodMargin;
+ uint8_t NbGateways;
+}PACKED LoRaMacEventInfo_t;
+
+/*!
+ * LoRaMAC events structure
+ * Used to notify upper layers of MAC events
+ */
+typedef struct sLoRaMacEvent
+{
+ /*!
+ * MAC layer event callback prototype.
+ *
+ * \param [IN] flags Bit field indicating the MAC events occurred
+ * \param [IN] info Details about MAC events occurred
+ */
+ void ( *MacEvent )( LoRaMacEventFlags_t *flags, LoRaMacEventInfo_t *info );
+}PACKED LoRaMacEvent_t;
+
+/*!
+ * LoRaMAC layer initialization
+ *
+ * \param [IN] events Pointer to a structure defining the LoRaMAC
+ * callback functions.
+ */
+void LoRaMacInit( LoRaMacEvent_t *events );
+
+/*!
+ * Enables/Disables the ADR (Adaptive Data Rate)
+ *
+ * \param [IN] enable [true: ADR ON, false: ADR OFF]
+ */
+void LoRaMacSetAdrOn( bool enable );
+
+/*!
+ * Initializes the network IDs. Device address,
+ * network session AES128 key and application session AES128 key.
+ *
+ * \remark To be only used when Over-the-Air activation isn't used.
+ *
+ * \param [IN] netID 24 bits network identifier
+ * ( provided by network operator )
+ * \param [IN] devAddr 32 bits device address on the network
+ * (must be unique to the network)
+ * \param [IN] nwkSKey Pointer to the network session AES128 key array
+ * ( 16 bytes )
+ * \param [IN] appSKey Pointer to the application session AES128 key array
+ * ( 16 bytes )
+ */
+void LoRaMacInitNwkIds( uint32_t netID, uint32_t devAddr, uint8_t *nwkSKey, uint8_t *appSKey );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacMulticastChannelAdd( MulticastParams_t *channelParam );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacMulticastChannelRemove( MulticastParams_t *channelParam );
+
+/*!
+ * Initiates the Over-the-Air activation
+ *
+ * \param [IN] devEui Pointer to the device EUI array ( 8 bytes )
+ * \param [IN] appEui Pointer to the application EUI array ( 8 bytes )
+ * \param [IN] appKey Pointer to the application AES128 key array ( 16 bytes )
+ *
+ * \retval status [0: OK, 1: Tx error, 2: Already joined a network]
+ */
+uint8_t LoRaMacJoinReq( uint8_t *devEui, uint8_t *appEui, uint8_t *appKey );
+
+/*!
+ * Sends a LinkCheckReq MAC command on the next uplink frame
+ *
+ * \retval status Function status [0: OK, 1: Busy]
+ */
+uint8_t LoRaMacLinkCheckReq( void );
+
+/*!
+ * LoRaMAC layer send frame
+ *
+ * \param [IN] fPort MAC payload port (must be > 0)
+ * \param [IN] fBuffer MAC data buffer to be sent
+ * \param [IN] fBufferSize MAC data buffer size
+ *
+ * \retval status [0: OK, 1: Busy, 2: No network joined,
+ * 3: Length or port error, 4: Unknown MAC command
+ * 5: Unable to find a free channel
+ * 6: Device switched off]
+ */
+uint8_t LoRaMacSendFrame( uint8_t fPort, void *fBuffer, uint16_t fBufferSize );
+
+/*!
+ * LoRaMAC layer send frame
+ *
+ * \param [IN] fPort MAC payload port (must be > 0)
+ * \param [IN] fBuffer MAC data buffer to be sent
+ * \param [IN] fBufferSize MAC data buffer size
+ * \param [IN] fBufferSize MAC data buffer size
+ * \param [IN] nbRetries Number of retries to receive the acknowledgement
+ *
+ * \retval status [0: OK, 1: Busy, 2: No network joined,
+ * 3: Length or port error, 4: Unknown MAC command
+ * 5: Unable to find a free channel
+ * 6: Device switched off]
+ */
+uint8_t LoRaMacSendConfirmedFrame( uint8_t fPort, void *fBuffer, uint16_t fBufferSize, uint8_t nbRetries );
+
+/*!
+ * ============================================================================
+ * = LoRaMac test functions =
+ * ============================================================================
+ */
+
+/*!
+ * LoRaMAC layer generic send frame
+ *
+ * \param [IN] macHdr MAC header 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 [0: OK, 1: Busy, 2: No network joined,
+ * 3: Length or port error, 4: Unknown MAC command
+ * 5: Unable to find a free channel
+ * 6: Device switched off]
+ */
+uint8_t LoRaMacSend( LoRaMacHeader_t *macHdr, uint8_t *fOpts, uint8_t fPort, void *fBuffer, uint16_t fBufferSize );
+
+/*!
+ * LoRaMAC layer frame buffer initialization.
+ *
+ * \param [IN] channel Channel parameters
+ * \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 [0: OK, 1: N/A, 2: No network joined,
+ * 3: Length or port error, 4: Unknown MAC command]
+ */
+uint8_t LoRaMacPrepareFrame( ChannelParams_t channel,LoRaMacHeader_t *macHdr, LoRaMacFrameCtrl_t *fCtrl, uint8_t *fOpts, uint8_t fPort, void *fBuffer, uint16_t fBufferSize );
+
+/*!
+ * LoRaMAC layer prepared frame buffer transmission with channel specification
+ *
+ * \remark LoRaMacPrepareFrame must be called at least once before calling this
+ * function.
+ *
+ * \param [IN] channel Channel parameters
+ * \retval status [0: OK, 1: Busy]
+ */
+uint8_t LoRaMacSendFrameOnChannel( ChannelParams_t channel );
+
+/*!
+ * LoRaMAC layer generic send frame with channel specification
+ *
+ * \param [IN] channel Channel parameters
+ * \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 [0: OK, 1: Busy, 2: No network joined,
+ * 3: Length or port error, 4: Unknown MAC command]
+ */
+uint8_t LoRaMacSendOnChannel( ChannelParams_t channel, LoRaMacHeader_t *macHdr, LoRaMacFrameCtrl_t *fCtrl, uint8_t *fOpts, uint8_t fPort, void *fBuffer, uint16_t fBufferSize );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetDeviceClass( DeviceClass_t deviceClass );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetPublicNetwork( bool enable );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetDutyCycleOn( bool enable );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetChannel( uint8_t id, ChannelParams_t params );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetRx2Channel( Rx2ChannelParams_t param );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetChannelsMask( uint16_t mask );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetChannelsNbRep( uint8_t nbRep );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetMaxRxWindow( uint32_t delay );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetReceiveDelay1( uint32_t delay );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetReceiveDelay2( uint32_t delay );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetJoinAcceptDelay1( uint32_t delay );
+
+/*
+ * TODO: Add documentation
+ */
+void LoRaMacSetJoinAcceptDelay2( uint32_t delay );
+
+/*!
+ * Sets channels datarate
+ *
+ * \param [IN] datarate eu868 - [DR_0, DR_1, DR_2, DR_3, DR_4, DR_5, DR_6, DR_7]
+ */
+void LoRaMacSetChannelsDatarate( int8_t datarate );
+
+/*!
+ * Sets channels tx output power
+ *
+ * \param [IN] txPower [TX_POWER_20_DBM, TX_POWER_14_DBM,
+ TX_POWER_11_DBM, TX_POWER_08_DBM,
+ TX_POWER_05_DBM, TX_POWER_02_DBM]
+ */
+void LoRaMacSetChannelsTxPower( int8_t txPower );
+
+/*!
+ * Disables/Enables the reception windows opening
+ *
+ * \param [IN] enable [true: enable, false: disable]
+ */
+void LoRaMacTestRxWindowsOn( bool enable );
+
+/*
+ * TODO: Add documentation
+ */
+uint32_t LoRaMacGetUpLinkCounter( void );
+
+/*
+ * TODO: Add documentation
+ */
+uint32_t LoRaMacGetDownLinkCounter( void );
+
+/*!
+ * Enables the MIC field test
+ *
+ * \param [IN] txPacketCounter Fixed Tx packet counter value
+ */
+void LoRaMacSetMicTest( uint16_t txPacketCounter );
+
+#endif // __LORAMAC_H__