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965 lines
29 KiB
965 lines
29 KiB
7 years ago
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/*
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/ _____) _ | |
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( (____ _____ ____ _| |_ _____ ____| |__
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\____ \| ___ | (_ _) ___ |/ ___) _ \
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_____) ) ____| | | || |_| ____( (___| | | |
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(______/|_____)_|_|_| \__)_____)\____)_| |_|
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(C)2013 Semtech
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___ _____ _ ___ _ _____ ___ ___ ___ ___
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/ __|_ _/_\ / __| |/ / __/ _ \| _ \/ __| __|
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\__ \ | |/ _ \ (__| ' <| _| (_) | / (__| _|
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|___/ |_/_/ \_\___|_|\_\_| \___/|_|_\\___|___|
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embedded.connectivity.solutions===============
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Description: LoRa MAC region US915 Hybrid implementation
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License: Revised BSD License, see LICENSE.TXT file include in the project
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Maintainer: Miguel Luis ( Semtech ), Gregory Cristian ( Semtech ) and Daniel Jaeckle ( STACKFORCE )
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*/
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#include <stdbool.h>
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#include <string.h>
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#include <stdint.h>
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#include <math.h>
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#include "radio.h"
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#include "timer.h"
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#include "LoRaMac.h"
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#include "utilities.h"
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#include "Region.h"
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#include "RegionCommon.h"
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#include "RegionUS915-Hybrid.h"
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#include "debug.h"
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// Definitions
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#define CHANNELS_MASK_SIZE 6
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// Global attributes
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/*!
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* LoRaMAC channels
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*/
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static ChannelParams_t Channels[US915_HYBRID_MAX_NB_CHANNELS];
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/*!
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* LoRaMac bands
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*/
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static Band_t Bands[US915_HYBRID_MAX_NB_BANDS] =
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{
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US915_HYBRID_BAND0
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};
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/*!
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* LoRaMac channels mask
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*/
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static uint16_t ChannelsMask[CHANNELS_MASK_SIZE];
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/*!
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* LoRaMac channels remaining
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*/
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static uint16_t ChannelsMaskRemaining[CHANNELS_MASK_SIZE];
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/*!
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* LoRaMac channels default mask
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*/
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static uint16_t ChannelsDefaultMask[CHANNELS_MASK_SIZE];
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// Static functions
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static int8_t GetNextLowerTxDr( int8_t dr, int8_t minDr )
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{
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uint8_t nextLowerDr = 0;
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if( dr == minDr )
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{
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nextLowerDr = minDr;
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}
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else
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{
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nextLowerDr = dr - 1;
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}
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return nextLowerDr;
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}
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static uint32_t GetBandwidth( uint32_t drIndex )
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{
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switch( BandwidthsUS915_HYBRID[drIndex] )
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{
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default:
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case 125000:
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return 0;
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case 250000:
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return 1;
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case 500000:
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return 2;
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}
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}
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static void ReenableChannels( uint16_t mask, uint16_t* channelsMask )
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{
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uint16_t blockMask = mask;
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for( uint8_t i = 0, j = 0; i < 4; i++, j += 2 )
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{
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channelsMask[i] = 0;
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if( ( blockMask & ( 1 << j ) ) != 0 )
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{
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channelsMask[i] |= 0x00FF;
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}
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if( ( blockMask & ( 1 << ( j + 1 ) ) ) != 0 )
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{
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channelsMask[i] |= 0xFF00;
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}
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}
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channelsMask[4] = blockMask;
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channelsMask[5] = 0x0000;
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}
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static uint8_t CountBits( uint16_t mask, uint8_t nbBits )
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{
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uint8_t nbActiveBits = 0;
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for( uint8_t j = 0; j < nbBits; j++ )
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{
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if( ( mask & ( 1 << j ) ) == ( 1 << j ) )
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{
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nbActiveBits++;
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}
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}
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return nbActiveBits;
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}
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static int8_t LimitTxPower( int8_t txPower, int8_t maxBandTxPower, int8_t datarate, uint16_t* channelsMask )
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{
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int8_t txPowerResult = txPower;
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// Limit tx power to the band max
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txPowerResult = MAX( txPower, maxBandTxPower );
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if( datarate == DR_4 )
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{// Limit tx power to max 26dBm
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txPowerResult = MAX( txPower, TX_POWER_2 );
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}
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else
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{
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if( RegionCommonCountChannels( channelsMask, 0, 4 ) < 50 )
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{// Limit tx power to max 21dBm
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txPowerResult = MAX( txPower, TX_POWER_5 );
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}
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}
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return txPowerResult;
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}
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static bool ValidateChannelsMask( uint16_t* channelsMask )
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{
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bool chanMaskState = false;
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uint16_t block1 = 0;
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uint16_t block2 = 0;
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uint8_t index = 0;
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uint16_t channelsMaskCpy[6];
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// Copy channels mask to not change the input
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for( uint8_t i = 0; i < 4; i++ )
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{
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channelsMaskCpy[i] = channelsMask[i];
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}
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for( uint8_t i = 0; i < 4; i++ )
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{
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block1 = channelsMaskCpy[i] & 0x00FF;
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block2 = channelsMaskCpy[i] & 0xFF00;
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if( CountBits( block1, 16 ) > 5 )
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{
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channelsMaskCpy[i] &= block1;
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channelsMaskCpy[4] = 1 << ( i * 2 );
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chanMaskState = true;
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index = i;
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break;
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}
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else if( CountBits( block2, 16 ) > 5 )
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{
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channelsMaskCpy[i] &= block2;
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channelsMaskCpy[4] = 1 << ( i * 2 + 1 );
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chanMaskState = true;
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index = i;
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break;
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}
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}
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// Do only change the channel mask, if we have found a valid block.
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if( chanMaskState == true )
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{
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// Copy channels mask back again
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for( uint8_t i = 0; i < 4; i++ )
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{
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channelsMask[i] = channelsMaskCpy[i];
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if( i != index )
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{
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channelsMask[i] = 0;
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}
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}
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channelsMask[4] = channelsMaskCpy[4];
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}
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return chanMaskState;
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}
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static uint8_t CountNbOfEnabledChannels( uint8_t datarate, uint16_t* channelsMask, ChannelParams_t* channels, Band_t* bands, uint8_t* enabledChannels, uint8_t* delayTx )
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{
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uint8_t nbEnabledChannels = 0;
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uint8_t delayTransmission = 0;
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for( uint8_t i = 0, k = 0; i < US915_HYBRID_MAX_NB_CHANNELS; i += 16, k++ )
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{
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for( uint8_t j = 0; j < 16; j++ )
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{
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if( ( channelsMask[k] & ( 1 << j ) ) != 0 )
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{
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if( channels[i + j].Frequency == 0 )
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{ // Check if the channel is enabled
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continue;
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}
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if( RegionCommonValueInRange( datarate, channels[i + j].DrRange.Fields.Min,
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channels[i + j].DrRange.Fields.Max ) == false )
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{ // Check if the current channel selection supports the given datarate
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continue;
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}
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if( bands[channels[i + j].Band].TimeOff > 0 )
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{ // Check if the band is available for transmission
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delayTransmission++;
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continue;
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}
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enabledChannels[nbEnabledChannels++] = i + j;
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}
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}
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}
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*delayTx = delayTransmission;
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return nbEnabledChannels;
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}
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PhyParam_t RegionUS915HybridGetPhyParam( GetPhyParams_t* getPhy )
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{
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PhyParam_t phyParam = { 0 };
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switch( getPhy->Attribute )
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{
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case PHY_MIN_RX_DR:
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{
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phyParam.Value = US915_HYBRID_RX_MIN_DATARATE;
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break;
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}
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case PHY_MIN_TX_DR:
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{
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phyParam.Value = US915_HYBRID_TX_MIN_DATARATE;
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break;
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}
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case PHY_DEF_TX_DR:
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{
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phyParam.Value = US915_HYBRID_DEFAULT_DATARATE;
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break;
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}
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case PHY_NEXT_LOWER_TX_DR:
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{
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phyParam.Value = GetNextLowerTxDr( getPhy->Datarate, US915_HYBRID_TX_MIN_DATARATE );
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break;
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}
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case PHY_DEF_TX_POWER:
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{
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phyParam.Value = US915_HYBRID_DEFAULT_TX_POWER;
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break;
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}
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case PHY_MAX_PAYLOAD:
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{
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phyParam.Value = MaxPayloadOfDatarateUS915_HYBRID[getPhy->Datarate];
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break;
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}
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case PHY_MAX_PAYLOAD_REPEATER:
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{
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phyParam.Value = MaxPayloadOfDatarateRepeaterUS915_HYBRID[getPhy->Datarate];
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break;
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}
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case PHY_DUTY_CYCLE:
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{
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phyParam.Value = US915_HYBRID_DUTY_CYCLE_ENABLED;
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break;
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}
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case PHY_MAX_RX_WINDOW:
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{
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phyParam.Value = US915_HYBRID_MAX_RX_WINDOW;
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break;
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}
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case PHY_RECEIVE_DELAY1:
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{
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phyParam.Value = US915_HYBRID_RECEIVE_DELAY1;
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break;
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}
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case PHY_RECEIVE_DELAY2:
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{
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phyParam.Value = US915_HYBRID_RECEIVE_DELAY2;
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break;
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}
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case PHY_JOIN_ACCEPT_DELAY1:
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{
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phyParam.Value = US915_HYBRID_JOIN_ACCEPT_DELAY1;
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break;
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}
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case PHY_JOIN_ACCEPT_DELAY2:
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{
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phyParam.Value = US915_HYBRID_JOIN_ACCEPT_DELAY2;
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break;
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}
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case PHY_MAX_FCNT_GAP:
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{
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phyParam.Value = US915_HYBRID_MAX_FCNT_GAP;
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break;
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}
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case PHY_ACK_TIMEOUT:
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{
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phyParam.Value = ( US915_HYBRID_ACKTIMEOUT + randr( -US915_HYBRID_ACK_TIMEOUT_RND, US915_HYBRID_ACK_TIMEOUT_RND ) );
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break;
|
||
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}
|
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|
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case PHY_DEF_DR1_OFFSET:
|
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|
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{
|
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phyParam.Value = US915_HYBRID_DEFAULT_RX1_DR_OFFSET;
|
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|
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break;
|
||
|
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}
|
||
|
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case PHY_DEF_RX2_FREQUENCY:
|
||
|
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{
|
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|
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phyParam.Value = US915_HYBRID_RX_WND_2_FREQ;
|
||
|
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break;
|
||
|
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}
|
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|
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case PHY_DEF_RX2_DR:
|
||
|
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{
|
||
|
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phyParam.Value = US915_HYBRID_RX_WND_2_DR;
|
||
|
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break;
|
||
|
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}
|
||
|
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case PHY_CHANNELS_MASK:
|
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|
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{
|
||
|
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phyParam.ChannelsMask = ChannelsMask;
|
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|
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break;
|
||
|
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}
|
||
|
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case PHY_CHANNELS_DEFAULT_MASK:
|
||
|
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{
|
||
|
|
phyParam.ChannelsMask = ChannelsDefaultMask;
|
||
|
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break;
|
||
|
|
}
|
||
|
|
case PHY_MAX_NB_CHANNELS:
|
||
|
|
{
|
||
|
|
phyParam.Value = US915_HYBRID_MAX_NB_CHANNELS;
|
||
|
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break;
|
||
|
|
}
|
||
|
|
case PHY_CHANNELS:
|
||
|
|
{
|
||
|
|
phyParam.Channels = Channels;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case PHY_DEF_UPLINK_DWELL_TIME:
|
||
|
|
case PHY_DEF_DOWNLINK_DWELL_TIME:
|
||
|
|
{
|
||
|
|
phyParam.Value = 0;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case PHY_DEF_MAX_EIRP:
|
||
|
|
case PHY_DEF_ANTENNA_GAIN:
|
||
|
|
{
|
||
|
|
phyParam.fValue = 0;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case PHY_NB_JOIN_TRIALS:
|
||
|
|
case PHY_DEF_NB_JOIN_TRIALS:
|
||
|
|
{
|
||
|
|
phyParam.Value = 2;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return phyParam;
|
||
|
|
}
|
||
|
|
|
||
|
|
void RegionUS915HybridSetBandTxDone( SetBandTxDoneParams_t* txDone )
|
||
|
|
{
|
||
|
|
RegionCommonSetBandTxDone( txDone->Joined, &Bands[Channels[txDone->Channel].Band], txDone->LastTxDoneTime );
|
||
|
|
}
|
||
|
|
|
||
|
|
void RegionUS915HybridInitDefaults( InitType_t type )
|
||
|
|
{
|
||
|
|
switch( type )
|
||
|
|
{
|
||
|
|
case INIT_TYPE_INIT:
|
||
|
|
{
|
||
|
|
// Channels
|
||
|
|
// 125 kHz channels
|
||
|
|
for( uint8_t i = 0; i < US915_HYBRID_MAX_NB_CHANNELS - 8; i++ )
|
||
|
|
{
|
||
|
|
Channels[i].Frequency = 902300000 + i * 200000;
|
||
|
|
Channels[i].DrRange.Value = ( DR_3 << 4 ) | DR_0;
|
||
|
|
Channels[i].Band = 0;
|
||
|
|
}
|
||
|
|
// 500 kHz channels
|
||
|
|
for( uint8_t i = US915_HYBRID_MAX_NB_CHANNELS - 8; i < US915_HYBRID_MAX_NB_CHANNELS; i++ )
|
||
|
|
{
|
||
|
|
Channels[i].Frequency = 903000000 + ( i - ( US915_HYBRID_MAX_NB_CHANNELS - 8 ) ) * 1600000;
|
||
|
|
Channels[i].DrRange.Value = ( DR_4 << 4 ) | DR_4;
|
||
|
|
Channels[i].Band = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// ChannelsMask
|
||
|
|
ChannelsDefaultMask[0] = 0x00FF;
|
||
|
|
ChannelsDefaultMask[1] = 0x0000;
|
||
|
|
ChannelsDefaultMask[2] = 0x0000;
|
||
|
|
ChannelsDefaultMask[3] = 0x0000;
|
||
|
|
ChannelsDefaultMask[4] = 0x0001;
|
||
|
|
ChannelsDefaultMask[5] = 0x0000;
|
||
|
|
|
||
|
|
// Copy channels default mask
|
||
|
|
RegionCommonChanMaskCopy( ChannelsMask, ChannelsDefaultMask, 6 );
|
||
|
|
|
||
|
|
// Copy into channels mask remaining
|
||
|
|
RegionCommonChanMaskCopy( ChannelsMaskRemaining, ChannelsMask, 6 );
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case INIT_TYPE_RESTORE:
|
||
|
|
{
|
||
|
|
ReenableChannels( ChannelsDefaultMask[4], ChannelsMask );
|
||
|
|
|
||
|
|
for( uint8_t i = 0; i < 6; i++ )
|
||
|
|
{ // Copy-And the channels mask
|
||
|
|
ChannelsMaskRemaining[i] &= ChannelsMask[i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool RegionUS915HybridVerify( VerifyParams_t* verify, PhyAttribute_t phyAttribute )
|
||
|
|
{
|
||
|
|
switch( phyAttribute )
|
||
|
|
{
|
||
|
|
case PHY_TX_DR:
|
||
|
|
{
|
||
|
|
return RegionCommonValueInRange( verify->DatarateParams.Datarate, US915_HYBRID_TX_MIN_DATARATE, US915_HYBRID_TX_MAX_DATARATE );
|
||
|
|
}
|
||
|
|
case PHY_DEF_TX_DR:
|
||
|
|
{
|
||
|
|
return RegionCommonValueInRange( verify->DatarateParams.Datarate, DR_0, DR_5 );
|
||
|
|
}
|
||
|
|
case PHY_RX_DR:
|
||
|
|
{
|
||
|
|
return RegionCommonValueInRange( verify->DatarateParams.Datarate, US915_HYBRID_RX_MIN_DATARATE, US915_HYBRID_RX_MAX_DATARATE );
|
||
|
|
}
|
||
|
|
case PHY_DEF_TX_POWER:
|
||
|
|
case PHY_TX_POWER:
|
||
|
|
{
|
||
|
|
// Remark: switched min and max!
|
||
|
|
return RegionCommonValueInRange( verify->TxPower, US915_HYBRID_MAX_TX_POWER, US915_HYBRID_MIN_TX_POWER );
|
||
|
|
}
|
||
|
|
case PHY_DUTY_CYCLE:
|
||
|
|
{
|
||
|
|
return US915_HYBRID_DUTY_CYCLE_ENABLED;
|
||
|
|
}
|
||
|
|
case PHY_NB_JOIN_TRIALS:
|
||
|
|
{
|
||
|
|
if( verify->NbJoinTrials < 2 )
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
void RegionUS915HybridApplyCFList( ApplyCFListParams_t* applyCFList )
|
||
|
|
{
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool RegionUS915HybridChanMaskSet( ChanMaskSetParams_t* chanMaskSet )
|
||
|
|
{
|
||
|
|
uint8_t nbChannels = RegionCommonCountChannels( chanMaskSet->ChannelsMaskIn, 0, 4 );
|
||
|
|
|
||
|
|
// Check the number of active channels
|
||
|
|
if( ( nbChannels < 2 ) &&
|
||
|
|
( nbChannels > 0 ) )
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Validate the channels mask
|
||
|
|
if( ValidateChannelsMask( chanMaskSet->ChannelsMaskIn ) == false )
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch( chanMaskSet->ChannelsMaskType )
|
||
|
|
{
|
||
|
|
case CHANNELS_MASK:
|
||
|
|
{
|
||
|
|
RegionCommonChanMaskCopy( ChannelsMask, chanMaskSet->ChannelsMaskIn, 6 );
|
||
|
|
|
||
|
|
for( uint8_t i = 0; i < 6; i++ )
|
||
|
|
{ // Copy-And the channels mask
|
||
|
|
ChannelsMaskRemaining[i] &= ChannelsMask[i];
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case CHANNELS_DEFAULT_MASK:
|
||
|
|
{
|
||
|
|
RegionCommonChanMaskCopy( ChannelsDefaultMask, chanMaskSet->ChannelsMaskIn, 6 );
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool RegionUS915HybridAdrNext( AdrNextParams_t* adrNext, int8_t* drOut, int8_t* txPowOut, uint32_t* adrAckCounter )
|
||
|
|
{
|
||
|
|
bool adrAckReq = false;
|
||
|
|
int8_t datarate = adrNext->Datarate;
|
||
|
|
int8_t txPower = adrNext->TxPower;
|
||
|
|
GetPhyParams_t getPhy;
|
||
|
|
PhyParam_t phyParam;
|
||
|
|
|
||
|
|
// Report back the adr ack counter
|
||
|
|
*adrAckCounter = adrNext->AdrAckCounter;
|
||
|
|
|
||
|
|
if( adrNext->AdrEnabled == true )
|
||
|
|
{
|
||
|
|
if( datarate == US915_HYBRID_TX_MIN_DATARATE )
|
||
|
|
{
|
||
|
|
*adrAckCounter = 0;
|
||
|
|
adrAckReq = false;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if( adrNext->AdrAckCounter >= US915_HYBRID_ADR_ACK_LIMIT )
|
||
|
|
{
|
||
|
|
adrAckReq = true;
|
||
|
|
txPower = US915_HYBRID_MAX_TX_POWER;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
adrAckReq = false;
|
||
|
|
}
|
||
|
|
if( adrNext->AdrAckCounter >= ( US915_HYBRID_ADR_ACK_LIMIT + US915_HYBRID_ADR_ACK_DELAY ) )
|
||
|
|
{
|
||
|
|
if( ( adrNext->AdrAckCounter % US915_HYBRID_ADR_ACK_DELAY ) == 1 )
|
||
|
|
{
|
||
|
|
// Decrease the datarate
|
||
|
|
getPhy.Attribute = PHY_NEXT_LOWER_TX_DR;
|
||
|
|
getPhy.Datarate = datarate;
|
||
|
|
getPhy.UplinkDwellTime = adrNext->UplinkDwellTime;
|
||
|
|
phyParam = RegionUS915HybridGetPhyParam( &getPhy );
|
||
|
|
datarate = phyParam.Value;
|
||
|
|
|
||
|
|
if( datarate == US915_HYBRID_TX_MIN_DATARATE )
|
||
|
|
{
|
||
|
|
// We must set adrAckReq to false as soon as we reach the lowest datarate
|
||
|
|
adrAckReq = false;
|
||
|
|
if( adrNext->UpdateChanMask == true )
|
||
|
|
{
|
||
|
|
// Re-enable default channels
|
||
|
|
ReenableChannels( ChannelsMask[4], ChannelsMask );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
*drOut = datarate;
|
||
|
|
*txPowOut = txPower;
|
||
|
|
return adrAckReq;
|
||
|
|
}
|
||
|
|
|
||
|
|
void RegionUS915HybridComputeRxWindowParameters( int8_t datarate, uint8_t minRxSymbols, uint32_t rxError, RxConfigParams_t *rxConfigParams )
|
||
|
|
{
|
||
|
|
double tSymbol = 0.0;
|
||
|
|
uint32_t radioWakeUpTime;
|
||
|
|
|
||
|
|
// Get the datarate, perform a boundary check
|
||
|
|
rxConfigParams->Datarate = MIN( datarate, US915_HYBRID_RX_MAX_DATARATE );
|
||
|
|
rxConfigParams->Bandwidth = GetBandwidth( rxConfigParams->Datarate );
|
||
|
|
|
||
|
|
tSymbol = RegionCommonComputeSymbolTimeLoRa( DataratesUS915_HYBRID[rxConfigParams->Datarate], BandwidthsUS915_HYBRID[rxConfigParams->Datarate] );
|
||
|
|
|
||
|
|
radioWakeUpTime = Radio.GetRadioWakeUpTime( );
|
||
|
|
RegionCommonComputeRxWindowParameters( tSymbol, minRxSymbols, rxError, radioWakeUpTime, &rxConfigParams->WindowTimeout, &rxConfigParams->WindowOffset );
|
||
|
|
}
|
||
|
|
|
||
|
|
bool RegionUS915HybridRxConfig( RxConfigParams_t* rxConfig, int8_t* datarate )
|
||
|
|
{
|
||
|
|
int8_t dr = rxConfig->Datarate;
|
||
|
|
uint8_t maxPayload = 0;
|
||
|
|
int8_t phyDr = 0;
|
||
|
|
uint32_t frequency = rxConfig->Frequency;
|
||
|
|
|
||
|
|
if( Radio.GetStatus( ) != RF_IDLE )
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( rxConfig->Window == 0 )
|
||
|
|
{
|
||
|
|
// Apply window 1 frequency
|
||
|
|
frequency = US915_HYBRID_FIRST_RX1_CHANNEL + ( rxConfig->Channel % 8 ) * US915_HYBRID_STEPWIDTH_RX1_CHANNEL;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Read the physical datarate from the datarates table
|
||
|
|
phyDr = DataratesUS915_HYBRID[dr];
|
||
|
|
|
||
|
|
Radio.SetChannel( frequency );
|
||
|
|
|
||
|
|
// Radio configuration
|
||
|
|
Radio.SetRxConfig( MODEM_LORA, rxConfig->Bandwidth, phyDr, 1, 0, 8, rxConfig->WindowTimeout, false, 0, false, 0, 0, true, rxConfig->RxContinuous );
|
||
|
|
|
||
|
|
if( rxConfig->RepeaterSupport == true )
|
||
|
|
{
|
||
|
|
maxPayload = MaxPayloadOfDatarateRepeaterUS915_HYBRID[dr];
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
maxPayload = MaxPayloadOfDatarateUS915_HYBRID[dr];
|
||
|
|
}
|
||
|
|
Radio.SetMaxPayloadLength( MODEM_LORA, maxPayload + LORA_MAC_FRMPAYLOAD_OVERHEAD );
|
||
|
|
DBG_PRINTF( "RX on freq %d Hz at DR %d\n\r", frequency, dr );
|
||
|
|
|
||
|
|
*datarate = (uint8_t) dr;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool RegionUS915HybridTxConfig( TxConfigParams_t* txConfig, int8_t* txPower, TimerTime_t* txTimeOnAir )
|
||
|
|
{
|
||
|
|
int8_t phyDr = DataratesUS915_HYBRID[txConfig->Datarate];
|
||
|
|
int8_t txPowerLimited = LimitTxPower( txConfig->TxPower, Bands[Channels[txConfig->Channel].Band].TxMaxPower, txConfig->Datarate, ChannelsMask );
|
||
|
|
uint32_t bandwidth = GetBandwidth( txConfig->Datarate );
|
||
|
|
int8_t phyTxPower = 0;
|
||
|
|
|
||
|
|
// Calculate physical TX power
|
||
|
|
phyTxPower = RegionCommonComputeTxPower( txPowerLimited, US915_HYBRID_DEFAULT_MAX_ERP, 0 );
|
||
|
|
|
||
|
|
// Setup the radio frequency
|
||
|
|
Radio.SetChannel( Channels[txConfig->Channel].Frequency );
|
||
|
|
|
||
|
|
Radio.SetTxConfig( MODEM_LORA, phyTxPower, 0, bandwidth, phyDr, 1, 8, false, true, 0, 0, false, 3000 );
|
||
|
|
DBG_PRINTF( "TX on freq %d Hz at DR %d\n\r", Channels[txConfig->Channel].Frequency, txConfig->Datarate );
|
||
|
|
|
||
|
|
// Setup maximum payload lenght of the radio driver
|
||
|
|
Radio.SetMaxPayloadLength( MODEM_LORA, txConfig->PktLen );
|
||
|
|
// Get the time-on-air of the next tx frame
|
||
|
|
*txTimeOnAir = Radio.TimeOnAir( MODEM_LORA, txConfig->PktLen );
|
||
|
|
*txPower = txPowerLimited;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
uint8_t RegionUS915HybridLinkAdrReq( LinkAdrReqParams_t* linkAdrReq, int8_t* drOut, int8_t* txPowOut, uint8_t* nbRepOut, uint8_t* nbBytesParsed )
|
||
|
|
{
|
||
|
|
uint8_t status = 0x07;
|
||
|
|
RegionCommonLinkAdrParams_t linkAdrParams;
|
||
|
|
uint8_t nextIndex = 0;
|
||
|
|
uint8_t bytesProcessed = 0;
|
||
|
|
uint16_t channelsMask[6] = { 0, 0, 0, 0, 0, 0 };
|
||
|
|
GetPhyParams_t getPhy;
|
||
|
|
PhyParam_t phyParam;
|
||
|
|
RegionCommonLinkAdrReqVerifyParams_t linkAdrVerifyParams;
|
||
|
|
|
||
|
|
// Initialize local copy of channels mask
|
||
|
|
RegionCommonChanMaskCopy( channelsMask, ChannelsMask, 6 );
|
||
|
|
|
||
|
|
while( bytesProcessed < linkAdrReq->PayloadSize )
|
||
|
|
{
|
||
|
|
nextIndex = RegionCommonParseLinkAdrReq( &( linkAdrReq->Payload[bytesProcessed] ), &linkAdrParams );
|
||
|
|
|
||
|
|
if( nextIndex == 0 )
|
||
|
|
break; // break loop, since no more request has been found
|
||
|
|
|
||
|
|
// Update bytes processed
|
||
|
|
bytesProcessed += nextIndex;
|
||
|
|
|
||
|
|
// Revert status, as we only check the last ADR request for the channel mask KO
|
||
|
|
status = 0x07;
|
||
|
|
|
||
|
|
if( linkAdrParams.ChMaskCtrl == 6 )
|
||
|
|
{
|
||
|
|
// Enable all 125 kHz channels
|
||
|
|
channelsMask[0] = 0xFFFF;
|
||
|
|
channelsMask[1] = 0xFFFF;
|
||
|
|
channelsMask[2] = 0xFFFF;
|
||
|
|
channelsMask[3] = 0xFFFF;
|
||
|
|
// Apply chMask to channels 64 to 71
|
||
|
|
channelsMask[4] = linkAdrParams.ChMask;
|
||
|
|
}
|
||
|
|
else if( linkAdrParams.ChMaskCtrl == 7 )
|
||
|
|
{
|
||
|
|
// Disable all 125 kHz channels
|
||
|
|
channelsMask[0] = 0x0000;
|
||
|
|
channelsMask[1] = 0x0000;
|
||
|
|
channelsMask[2] = 0x0000;
|
||
|
|
channelsMask[3] = 0x0000;
|
||
|
|
// Apply chMask to channels 64 to 71
|
||
|
|
channelsMask[4] = linkAdrParams.ChMask;
|
||
|
|
}
|
||
|
|
else if( linkAdrParams.ChMaskCtrl == 5 )
|
||
|
|
{
|
||
|
|
// RFU
|
||
|
|
status &= 0xFE; // Channel mask KO
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
channelsMask[linkAdrParams.ChMaskCtrl] = linkAdrParams.ChMask;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// FCC 15.247 paragraph F mandates to hop on at least 2 125 kHz channels
|
||
|
|
if( ( linkAdrParams.Datarate < DR_4 ) && ( RegionCommonCountChannels( channelsMask, 0, 4 ) < 2 ) )
|
||
|
|
{
|
||
|
|
status &= 0xFE; // Channel mask KO
|
||
|
|
}
|
||
|
|
|
||
|
|
if( ValidateChannelsMask( channelsMask ) == false )
|
||
|
|
{
|
||
|
|
status &= 0xFE; // Channel mask KO
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get the minimum possible datarate
|
||
|
|
getPhy.Attribute = PHY_MIN_TX_DR;
|
||
|
|
getPhy.UplinkDwellTime = linkAdrReq->UplinkDwellTime;
|
||
|
|
phyParam = RegionUS915HybridGetPhyParam( &getPhy );
|
||
|
|
|
||
|
|
linkAdrVerifyParams.Status = status;
|
||
|
|
linkAdrVerifyParams.AdrEnabled = linkAdrReq->AdrEnabled;
|
||
|
|
linkAdrVerifyParams.Datarate = linkAdrParams.Datarate;
|
||
|
|
linkAdrVerifyParams.TxPower = linkAdrParams.TxPower;
|
||
|
|
linkAdrVerifyParams.NbRep = linkAdrParams.NbRep;
|
||
|
|
linkAdrVerifyParams.CurrentDatarate = linkAdrReq->CurrentDatarate;
|
||
|
|
linkAdrVerifyParams.CurrentTxPower = linkAdrReq->CurrentTxPower;
|
||
|
|
linkAdrVerifyParams.CurrentNbRep = linkAdrReq->CurrentNbRep;
|
||
|
|
linkAdrVerifyParams.NbChannels = US915_HYBRID_MAX_NB_CHANNELS;
|
||
|
|
linkAdrVerifyParams.ChannelsMask = channelsMask;
|
||
|
|
linkAdrVerifyParams.MinDatarate = ( int8_t )phyParam.Value;
|
||
|
|
linkAdrVerifyParams.MaxDatarate = US915_HYBRID_TX_MAX_DATARATE;
|
||
|
|
linkAdrVerifyParams.Channels = Channels;
|
||
|
|
linkAdrVerifyParams.MinTxPower = US915_HYBRID_MIN_TX_POWER;
|
||
|
|
linkAdrVerifyParams.MaxTxPower = US915_HYBRID_MAX_TX_POWER;
|
||
|
|
|
||
|
|
// Verify the parameters and update, if necessary
|
||
|
|
status = RegionCommonLinkAdrReqVerifyParams( &linkAdrVerifyParams, &linkAdrParams.Datarate, &linkAdrParams.TxPower, &linkAdrParams.NbRep );
|
||
|
|
|
||
|
|
// Update channelsMask if everything is correct
|
||
|
|
if( status == 0x07 )
|
||
|
|
{
|
||
|
|
// Copy Mask
|
||
|
|
RegionCommonChanMaskCopy( ChannelsMask, channelsMask, 6 );
|
||
|
|
|
||
|
|
ChannelsMaskRemaining[0] &= ChannelsMask[0];
|
||
|
|
ChannelsMaskRemaining[1] &= ChannelsMask[1];
|
||
|
|
ChannelsMaskRemaining[2] &= ChannelsMask[2];
|
||
|
|
ChannelsMaskRemaining[3] &= ChannelsMask[3];
|
||
|
|
ChannelsMaskRemaining[4] = ChannelsMask[4];
|
||
|
|
ChannelsMaskRemaining[5] = ChannelsMask[5];
|
||
|
|
}
|
||
|
|
|
||
|
|
// Update status variables
|
||
|
|
*drOut = linkAdrParams.Datarate;
|
||
|
|
*txPowOut = linkAdrParams.TxPower;
|
||
|
|
*nbRepOut = linkAdrParams.NbRep;
|
||
|
|
*nbBytesParsed = bytesProcessed;
|
||
|
|
|
||
|
|
return status;
|
||
|
|
}
|
||
|
|
|
||
|
|
uint8_t RegionUS915HybridRxParamSetupReq( RxParamSetupReqParams_t* rxParamSetupReq )
|
||
|
|
{
|
||
|
|
uint8_t status = 0x07;
|
||
|
|
uint32_t freq = rxParamSetupReq->Frequency;
|
||
|
|
|
||
|
|
// Verify radio frequency
|
||
|
|
if( ( Radio.CheckRfFrequency( freq ) == false ) ||
|
||
|
|
( freq < US915_HYBRID_FIRST_RX1_CHANNEL ) ||
|
||
|
|
( freq > US915_HYBRID_LAST_RX1_CHANNEL ) ||
|
||
|
|
( ( ( freq - ( uint32_t ) US915_HYBRID_FIRST_RX1_CHANNEL ) % ( uint32_t ) US915_HYBRID_STEPWIDTH_RX1_CHANNEL ) != 0 ) )
|
||
|
|
{
|
||
|
|
status &= 0xFE; // Channel frequency KO
|
||
|
|
}
|
||
|
|
|
||
|
|
// Verify datarate
|
||
|
|
if( RegionCommonValueInRange( rxParamSetupReq->Datarate, US915_HYBRID_RX_MIN_DATARATE, US915_HYBRID_RX_MAX_DATARATE ) == false )
|
||
|
|
{
|
||
|
|
status &= 0xFD; // Datarate KO
|
||
|
|
}
|
||
|
|
if( ( RegionCommonValueInRange( rxParamSetupReq->Datarate, DR_5, DR_7 ) == true ) ||
|
||
|
|
( rxParamSetupReq->Datarate > DR_13 ) )
|
||
|
|
{
|
||
|
|
status &= 0xFD; // Datarate KO
|
||
|
|
}
|
||
|
|
|
||
|
|
// Verify datarate offset
|
||
|
|
if( RegionCommonValueInRange( rxParamSetupReq->DrOffset, US915_HYBRID_MIN_RX1_DR_OFFSET, US915_HYBRID_MAX_RX1_DR_OFFSET ) == false )
|
||
|
|
{
|
||
|
|
status &= 0xFB; // Rx1DrOffset range KO
|
||
|
|
}
|
||
|
|
|
||
|
|
return status;
|
||
|
|
}
|
||
|
|
|
||
|
|
uint8_t RegionUS915HybridNewChannelReq( NewChannelReqParams_t* newChannelReq )
|
||
|
|
{
|
||
|
|
// Datarate and frequency KO
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int8_t RegionUS915HybridTxParamSetupReq( TxParamSetupReqParams_t* txParamSetupReq )
|
||
|
|
{
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
uint8_t RegionUS915HybridDlChannelReq( DlChannelReqParams_t* dlChannelReq )
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int8_t RegionUS915HybridAlternateDr( AlternateDrParams_t* alternateDr )
|
||
|
|
{
|
||
|
|
int8_t datarate = 0;
|
||
|
|
|
||
|
|
// Re-enable 500 kHz default channels
|
||
|
|
ReenableChannels( ChannelsMask[4], ChannelsMask );
|
||
|
|
|
||
|
|
if( ( alternateDr->NbTrials & 0x01 ) == 0x01 )
|
||
|
|
{
|
||
|
|
datarate = DR_4;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
datarate = DR_0;
|
||
|
|
}
|
||
|
|
return datarate;
|
||
|
|
}
|
||
|
|
|
||
|
|
void RegionUS915HybridCalcBackOff( CalcBackOffParams_t* calcBackOff )
|
||
|
|
{
|
||
|
|
RegionCommonCalcBackOffParams_t calcBackOffParams;
|
||
|
|
|
||
|
|
calcBackOffParams.Channels = Channels;
|
||
|
|
calcBackOffParams.Bands = Bands;
|
||
|
|
calcBackOffParams.LastTxIsJoinRequest = calcBackOff->LastTxIsJoinRequest;
|
||
|
|
calcBackOffParams.Joined = calcBackOff->Joined;
|
||
|
|
calcBackOffParams.DutyCycleEnabled = calcBackOff->DutyCycleEnabled;
|
||
|
|
calcBackOffParams.Channel = calcBackOff->Channel;
|
||
|
|
calcBackOffParams.ElapsedTime = calcBackOff->ElapsedTime;
|
||
|
|
calcBackOffParams.TxTimeOnAir = calcBackOff->TxTimeOnAir;
|
||
|
|
|
||
|
|
RegionCommonCalcBackOff( &calcBackOffParams );
|
||
|
|
}
|
||
|
|
|
||
|
|
bool RegionUS915HybridNextChannel( NextChanParams_t* nextChanParams, uint8_t* channel, TimerTime_t* time, TimerTime_t* aggregatedTimeOff )
|
||
|
|
{
|
||
|
|
uint8_t nbEnabledChannels = 0;
|
||
|
|
uint8_t delayTx = 0;
|
||
|
|
uint8_t enabledChannels[US915_HYBRID_MAX_NB_CHANNELS] = { 0 };
|
||
|
|
TimerTime_t nextTxDelay = 0;
|
||
|
|
|
||
|
|
// Count 125kHz channels
|
||
|
|
if( RegionCommonCountChannels( ChannelsMaskRemaining, 0, 4 ) == 0 )
|
||
|
|
{ // Reactivate default channels
|
||
|
|
RegionCommonChanMaskCopy( ChannelsMaskRemaining, ChannelsMask, 4 );
|
||
|
|
}
|
||
|
|
// Check other channels
|
||
|
|
if( nextChanParams->Datarate >= DR_4 )
|
||
|
|
{
|
||
|
|
if( ( ChannelsMaskRemaining[4] & 0x00FF ) == 0 )
|
||
|
|
{
|
||
|
|
ChannelsMaskRemaining[4] = ChannelsMask[4];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if( nextChanParams->AggrTimeOff <= TimerGetElapsedTime( nextChanParams->LastAggrTx ) )
|
||
|
|
{
|
||
|
|
// Reset Aggregated time off
|
||
|
|
*aggregatedTimeOff = 0;
|
||
|
|
|
||
|
|
// Update bands Time OFF
|
||
|
|
nextTxDelay = RegionCommonUpdateBandTimeOff( nextChanParams->Joined, nextChanParams->DutyCycleEnabled, Bands, US915_HYBRID_MAX_NB_BANDS );
|
||
|
|
|
||
|
|
// Search how many channels are enabled
|
||
|
|
nbEnabledChannels = CountNbOfEnabledChannels( nextChanParams->Datarate,
|
||
|
|
ChannelsMaskRemaining, Channels,
|
||
|
|
Bands, enabledChannels, &delayTx );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
delayTx++;
|
||
|
|
nextTxDelay = nextChanParams->AggrTimeOff - TimerGetElapsedTime( nextChanParams->LastAggrTx );
|
||
|
|
}
|
||
|
|
|
||
|
|
if( nbEnabledChannels > 0 )
|
||
|
|
{
|
||
|
|
// We found a valid channel
|
||
|
|
*channel = enabledChannels[randr( 0, nbEnabledChannels - 1 )];
|
||
|
|
// Disable the channel in the mask
|
||
|
|
RegionCommonChanDisable( ChannelsMaskRemaining, *channel, US915_HYBRID_MAX_NB_CHANNELS - 8 );
|
||
|
|
|
||
|
|
*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;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
LoRaMacStatus_t RegionUS915HybridChannelAdd( ChannelAddParams_t* channelAdd )
|
||
|
|
{
|
||
|
|
return LORAMAC_STATUS_PARAMETER_INVALID;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool RegionUS915HybridChannelsRemove( ChannelRemoveParams_t* channelRemove )
|
||
|
|
{
|
||
|
|
return LORAMAC_STATUS_PARAMETER_INVALID;
|
||
|
|
}
|
||
|
|
|
||
|
|
void RegionUS915HybridSetContinuousWave( ContinuousWaveParams_t* continuousWave )
|
||
|
|
{
|
||
|
|
int8_t txPowerLimited = LimitTxPower( continuousWave->TxPower, Bands[Channels[continuousWave->Channel].Band].TxMaxPower, continuousWave->Datarate, ChannelsMask );
|
||
|
|
int8_t phyTxPower = 0;
|
||
|
|
uint32_t frequency = Channels[continuousWave->Channel].Frequency;
|
||
|
|
|
||
|
|
// Calculate physical TX power
|
||
|
|
phyTxPower = RegionCommonComputeTxPower( txPowerLimited, US915_HYBRID_DEFAULT_MAX_ERP, 0 );
|
||
|
|
|
||
|
|
Radio.SetTxContinuousWave( frequency, phyTxPower, continuousWave->Timeout );
|
||
|
|
}
|
||
|
|
|
||
|
|
uint8_t RegionUS915HybridApplyDrOffset( uint8_t downlinkDwellTime, int8_t dr, int8_t drOffset )
|
||
|
|
{
|
||
|
|
int8_t datarate = DatarateOffsetsUS915_HYBRID[dr][drOffset];
|
||
|
|
|
||
|
|
if( datarate < 0 )
|
||
|
|
{
|
||
|
|
datarate = DR_0;
|
||
|
|
}
|
||
|
|
return datarate;
|
||
|
|
}
|