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PHY Class B configuration 

- Initialize Class B configuration
- Implement class B receiver configuration
- For regions such as US915 with derived rx_config(),  changes to the base class implementation makes the derivation unnecessary , so these region specific versions have been removed
feature-lorawan-1-1
Unknown 2019-04-26 13:58:44 -04:00 committed by Antti Kauppila
parent bf6f45a05b
commit bb878fea8a
12 changed files with 401 additions and 162 deletions
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31
features/lorawan/lorastack/phy/LoRaPHYAS923.cpp
View File

@ -184,6 +184,32 @@
*/
#define AS923_RX_WND_2_DR DR_2
/*!
* Beacon default frequency
*/
#define AS923_BEACON_CHANNEL_FREQ 923400000
/*!
* Ping slot default frequency
*/
#define AS923_PING_CHANNEL_FREQ 923400000
/*!
* Size of RFU 1 field
*/
#define AS923_BEACON_RFU1_SIZE 2
/*!
* Size of RFU 2 field
*/
#define AS923_BEACON_RFU2_SIZE 0
/*!
* Datarate of the beacon channel
*/
#define AS923_BEACON_CHANNEL_DR DR_3
/*!
* Band 0 definition
* { DutyCycle, TxMaxPower, LastJoinTxDoneTime, LastTxDoneTime, TimeOff }
@ -324,6 +350,11 @@ LoRaPHYAS923::LoRaPHYAS923()
phy_params.ack_timeout_rnd = AS923_ACK_TIMEOUT_RND;
phy_params.rx_window2_datarate = AS923_RX_WND_2_DR;
phy_params.rx_window2_frequency = AS923_RX_WND_2_FREQ;
phy_params.beacon.default_frequency = AS923_BEACON_CHANNEL_FREQ;
phy_params.beacon.datarate = AS923_BEACON_CHANNEL_DR;
phy_params.beacon.rfu1_size = AS923_BEACON_RFU1_SIZE;
phy_params.beacon.rfu2_size = AS923_BEACON_RFU2_SIZE;
phy_params.ping_slot_default_frequency = AS923_PING_CHANNEL_FREQ;
}
LoRaPHYAS923::~LoRaPHYAS923()

108
features/lorawan/lorastack/phy/LoRaPHYAU915.cpp
View File

@ -163,6 +163,41 @@
*/
#define AU915_RX_WND_2_DR DR_8
/*!
* Beacon default frequency
*/
#define AU915_BEACON_CHANNEL_FREQ 923300000
/*!
* Beacon frequency channel stepwidth
*/
#define AU915_BEACON_CHANNEL_STEPWIDTH 600000
/*!
* Number of possible beacon channels
*/
#define AU915_BEACON_NB_CHANNELS 8
/*!
* Ping slot default frequency
*/
#define AU915_PING_CHANNEL_FREQ 923300000
/*!
* Size of RFU 1 field
*/
#define AU915_BEACON_RFU1_SIZE 3
/*!
* Size of RFU 2 field
*/
#define AU915_BEACON_RFU2_SIZE 1
/*!
* Datarate of the beacon channel
*/
#define AU915_BEACON_CHANNEL_DR DR_8
/*!
* Band 0 definition
* { DutyCycle, TxMaxPower, LastJoinTxDoneTime, LastTxDoneTime, TimeOff }
@ -335,55 +370,18 @@ LoRaPHYAU915::LoRaPHYAU915()
phy_params.ack_timeout_rnd = AU915_ACK_TIMEOUT_RND;
phy_params.rx_window2_datarate = AU915_RX_WND_2_DR;
phy_params.rx_window2_frequency = AU915_RX_WND_2_FREQ;
phy_params.beacon.default_frequency = AU915_BEACON_CHANNEL_FREQ;
phy_params.beacon.datarate = AU915_BEACON_CHANNEL_DR;
phy_params.beacon.rfu1_size = AU915_BEACON_RFU1_SIZE;
phy_params.beacon.rfu2_size = AU915_BEACON_RFU2_SIZE;
phy_params.ping_slot_default_frequency = AU915_PING_CHANNEL_FREQ;
}
LoRaPHYAU915::~LoRaPHYAU915()
{
}
bool LoRaPHYAU915::rx_config(rx_config_params_t *params)
{
int8_t dr = params->datarate;
uint8_t max_payload = 0;
int8_t phy_dr = 0;
uint32_t frequency = params->frequency;
if (_radio->get_status() != RF_IDLE) {
return false;
}
if (params->rx_slot == RX_SLOT_WIN_1) {
// Apply window 1 frequency
frequency = AU915_FIRST_RX1_CHANNEL
+ (params->channel % 8) * AU915_STEPWIDTH_RX1_CHANNEL;
// Caller may print the frequency to log so update it to match actual frequency
params->frequency = frequency;
}
// Read the physical datarate from the datarates table
phy_dr = datarates_AU915[dr];
_radio->lock();
_radio->set_channel(frequency);
// Radio configuration
_radio->set_rx_config(MODEM_LORA, params->bandwidth, phy_dr, 1, 0, 8,
params->window_timeout, false, 0, false, 0, 0, true,
params->is_rx_continuous);
if (params->is_repeater_supported == true) {
max_payload = max_payload_with_repeater_AU915[dr];
} else {
max_payload = max_payload_AU915[dr];
}
_radio->set_max_payload_length(MODEM_LORA,
max_payload + LORA_MAC_FRMPAYLOAD_OVERHEAD);
_radio->unlock();
return true;
}
bool LoRaPHYAU915::tx_config(tx_config_params_t *params, int8_t *tx_power,
lorawan_time_t *tx_toa)
@ -661,3 +659,27 @@ void LoRaPHYAU915::fill_channel_mask_with_value(uint16_t *channel_mask,
channel_mask[i] = value;
}
}
uint32_t LoRaPHYAU915::get_beacon_frequency(uint32_t beacon_time)
{
uint8_t channel;
channel = (beacon_time / LORA_BEACON_INTERVAL) % AU915_BEACON_NB_CHANNELS;
return AU915_BEACON_CHANNEL_FREQ + (channel * AU915_BEACON_CHANNEL_STEPWIDTH);
}
uint32_t LoRaPHYAU915::get_ping_slot_frequency(uint32_t dev_addr, uint32_t beacon_time)
{
uint8_t channel = (dev_addr + (beacon_time / LORA_BEACON_INTERVAL)) % AU915_BEACON_NB_CHANNELS;
return AU915_FIRST_RX1_CHANNEL + (channel * AU915_STEPWIDTH_RX1_CHANNEL);
}
uint32_t LoRaPHYAU915::get_rx1_frequency(uint8_t channel)
{
// For AU915 spectrum, we have 8 Downstream channels, MAC would have
// selected a channel randomly from 72 Upstream channels, that index is
// passed in rx_config_params_t. Based on that channel index, we choose the
// frequency for first RX slot
return AU915_FIRST_RX1_CHANNEL + (channel % 8) * AU915_STEPWIDTH_RX1_CHANNEL;
}

8
features/lorawan/lorastack/phy/LoRaPHYAU915.h
View File

@ -57,8 +57,6 @@ public:
LoRaPHYAU915();
virtual ~LoRaPHYAU915();
virtual bool rx_config(rx_config_params_t *config);
virtual bool tx_config(tx_config_params_t *config, int8_t *txPower,
lorawan_time_t *txTimeOnAir);
@ -77,6 +75,12 @@ public:
virtual uint8_t apply_DR_offset(int8_t dr, int8_t dr_offset);
virtual uint32_t get_rx1_frequency(uint8_t channel);
virtual uint32_t get_beacon_frequency(uint32_t beacon_time);
virtual uint32_t get_ping_slot_frequency(uint32_t dev_addr, uint32_t beacon_time);
private:
/**

115
features/lorawan/lorastack/phy/LoRaPHYCN470.cpp
View File

@ -183,6 +183,40 @@ static const band_t CN470_BAND0 = {1, CN470_MAX_TX_POWER, 0, 0, 0}; // 100.0 %
*/
#define CN470_STEPWIDTH_RX1_CHANNEL ((uint32_t) 200000)
/*!
* Beacon default frequency
*/
#define CN470_BEACON_CHANNEL_FREQ 508300000
/*!
* Beacon frequency channel stepwidth
*/
#define CN470_BEACON_CHANNEL_STEPWIDTH 200000
/*!
* Number of possible beacon channels
*/
#define CN470_BEACON_NB_CHANNELS 8
/*!
* Ping slot default frequency
*/
#define CN470_PING_CHANNEL_FREQ 500300000
/*!
* Size of RFU 1 field
*/
#define CN470_BEACON_RFU1_SIZE 3
/*!
* Size of RFU 2 field
*/
#define CN470_BEACON_RFU2_SIZE 1
/*!
* Datarate of the beacon channel
*/
#define CN470_BEACON_CHANNEL_DR DR_2
/*!
* Data rates table definition
*/
@ -294,6 +328,13 @@ LoRaPHYCN470::LoRaPHYCN470()
phy_params.ack_timeout_rnd = CN470_ACK_TIMEOUT_RND;
phy_params.rx_window2_datarate = CN470_RX_WND_2_DR;
phy_params.rx_window2_frequency = CN470_RX_WND_2_FREQ;
phy_params.beacon.default_frequency = CN470_BEACON_CHANNEL_FREQ;
phy_params.beacon.datarate = CN470_BEACON_CHANNEL_DR;
phy_params.beacon.rfu1_size = CN470_BEACON_RFU1_SIZE;
phy_params.beacon.rfu2_size = CN470_BEACON_RFU2_SIZE;
phy_params.ping_slot_default_frequency = CN470_PING_CHANNEL_FREQ;
}
LoRaPHYCN470::~LoRaPHYCN470()
@ -358,57 +399,6 @@ lorawan_status_t LoRaPHYCN470::set_next_channel(channel_selection_params_t *para
return LORAWAN_STATUS_NO_CHANNEL_FOUND;
}
bool LoRaPHYCN470::rx_config(rx_config_params_t *config)
{
int8_t dr = config->datarate;
uint8_t max_payload = 0;
int8_t phy_dr = 0;
uint32_t frequency = config->frequency;
_radio->lock();
if (_radio->get_status() != RF_IDLE) {
_radio->unlock();
return false;
}
_radio->unlock();
if (config->rx_slot == RX_SLOT_WIN_1) {
// Apply window 1 frequency
frequency = CN470_FIRST_RX1_CHANNEL + (config->channel % 48) * CN470_STEPWIDTH_RX1_CHANNEL;
// Caller may print the frequency to log so update it to match actual frequency
config->frequency = frequency;
}
// Read the physical datarate from the datarates table
phy_dr = datarates_CN470[dr];
_radio->lock();
_radio->set_channel(frequency);
// Radio configuration
_radio->set_rx_config(MODEM_LORA, config->bandwidth, phy_dr, 1, 0,
MBED_CONF_LORA_DOWNLINK_PREAMBLE_LENGTH,
config->window_timeout, false, 0, false, 0, 0, true,
config->is_rx_continuous);
_radio->unlock();
if (config->is_repeater_supported == true) {
max_payload = max_payloads_with_repeater_CN470[dr];
} else {
max_payload = max_payloads_CN470[dr];
}
_radio->lock();
_radio->set_max_payload_length(MODEM_LORA, max_payload + LORA_MAC_FRMPAYLOAD_OVERHEAD);
_radio->unlock();
return true;
}
bool LoRaPHYCN470::tx_config(tx_config_params_t *config, int8_t *tx_power,
lorawan_time_t *tx_toa)
{
@ -574,3 +564,26 @@ uint8_t LoRaPHYCN470::accept_rx_param_setup_req(rx_param_setup_req_t *params)
return status;
}
uint32_t LoRaPHYCN470::get_beacon_frequency(uint32_t beacon_time)
{
uint8_t channel;
channel = (beacon_time / LORA_BEACON_INTERVAL) % CN470_BEACON_NB_CHANNELS;
return CN470_BEACON_CHANNEL_FREQ + (channel * CN470_BEACON_CHANNEL_STEPWIDTH);
}
uint32_t LoRaPHYCN470::get_ping_slot_frequency(uint32_t dev_addr, uint32_t beacon_time)
{
uint8_t channel = (dev_addr + (beacon_time / LORA_BEACON_INTERVAL)) % CN470_BEACON_NB_CHANNELS;
return CN470_FIRST_RX1_CHANNEL + (channel * CN470_STEPWIDTH_RX1_CHANNEL);
}
uint32_t LoRaPHYCN470::get_rx1_frequency(uint8_t channel)
{
// For CN470 spectrum, we have 8 Downstream channels, MAC would have
// selected a channel randomly from 96 Upstream channels, that index is
// passed in rx_config_params_t. Based on that channel index, we choose the
// frequency for first RX slot
return CN470_FIRST_RX1_CHANNEL + (channel % 8) * CN470_STEPWIDTH_RX1_CHANNEL;
}

8
features/lorawan/lorastack/phy/LoRaPHYCN470.h
View File

@ -62,8 +62,6 @@ public:
uint8_t *channel, lorawan_time_t *time,
lorawan_time_t *aggregate_timeoff);
virtual bool rx_config(rx_config_params_t *config);
virtual bool tx_config(tx_config_params_t *config, int8_t *tx_power,
lorawan_time_t *tx_toa);
@ -73,6 +71,12 @@ public:
virtual uint8_t accept_rx_param_setup_req(rx_param_setup_req_t *params);
virtual uint32_t get_rx1_frequency(uint8_t channel);
virtual uint32_t get_beacon_frequency(uint32_t beacon_time);
virtual uint32_t get_ping_slot_frequency(uint32_t dev_addr, uint32_t beacon_time);
private:
/*!

30
features/lorawan/lorastack/phy/LoRaPHYCN779.cpp
View File

@ -181,6 +181,31 @@
*/
#define CN779_RX_WND_2_DR DR_0
/*!
* Beacon default frequency
*/
#define CN779_BEACON_CHANNEL_FREQ 785000000
/*!
* Beacon default frequency
*/
#define CN779_PING_CHANNEL_FREQ 785000000
/*!
* Size of RFU 1 field
*/
#define CN779_BEACON_RFU1_SIZE 2
/*!
* Size of RFU 2 field
*/
#define CN779_BEACON_RFU2_SIZE 0
/*!
* Datarate of the beacon channel
*/
#define CN779_BEACON_CHANNEL_DR DR_3
/*!
* Band 0 definition
* { DutyCycle, TxMaxPower, LastJoinTxDoneTime, LastTxDoneTime, TimeOff }
@ -313,6 +338,11 @@ LoRaPHYCN779::LoRaPHYCN779()
phy_params.ack_timeout_rnd = CN779_ACK_TIMEOUT_RND;
phy_params.rx_window2_datarate = CN779_RX_WND_2_DR;
phy_params.rx_window2_frequency = CN779_RX_WND_2_FREQ;
phy_params.beacon.default_frequency = CN779_BEACON_CHANNEL_FREQ;
phy_params.beacon.datarate = CN779_BEACON_CHANNEL_DR;
phy_params.beacon.rfu1_size = CN779_BEACON_RFU1_SIZE;
phy_params.beacon.rfu2_size = CN779_BEACON_RFU2_SIZE;
phy_params.ping_slot_default_frequency = CN779_PING_CHANNEL_FREQ;
}
LoRaPHYCN779::~LoRaPHYCN779()

31
features/lorawan/lorastack/phy/LoRaPHYEU433.cpp
View File

@ -181,6 +181,32 @@
*/
#define EU433_RX_WND_2_DR DR_0
/*!
* Beacon default frequency
*/
#define EU433_BEACON_CHANNEL_FREQ 434665000
/*!
* Ping slot default frequency
*/
#define EU433_PING_CHANNEL_FREQ 434665000
/*!
* Size of RFU 1 field
*/
#define EU433_BEACON_RFU1_SIZE 2
/*!
* Size of RFU 2 field
*/
#define EU433_BEACON_RFU2_SIZE 0
/*!
* Datarate of the beacon channel
*/
#define EU433_BEACON_CHANNEL_DR DR_3
/*!
* Band 0 definition
* { DutyCycle, TxMaxPower, LastJoinTxDoneTime, LastTxDoneTime, TimeOff }
@ -314,6 +340,11 @@ LoRaPHYEU433::LoRaPHYEU433()
phy_params.ack_timeout_rnd = EU433_ACK_TIMEOUT_RND;
phy_params.rx_window2_datarate = EU433_RX_WND_2_DR;
phy_params.rx_window2_frequency = EU433_RX_WND_2_FREQ;
phy_params.beacon.default_frequency = EU433_BEACON_CHANNEL_FREQ;
phy_params.beacon.datarate = EU433_BEACON_CHANNEL_DR;
phy_params.beacon.rfu1_size = EU433_BEACON_RFU1_SIZE;
phy_params.beacon.rfu2_size = EU433_BEACON_RFU2_SIZE;
phy_params.ping_slot_default_frequency = EU433_PING_CHANNEL_FREQ;
}
LoRaPHYEU433::~LoRaPHYEU433()

30
features/lorawan/lorastack/phy/LoRaPHYEU868.cpp
View File

@ -159,6 +159,31 @@
*/
#define EU868_ACKTIMEOUT 2000
/*!
* Beacon default frequency
*/
#define EU868_BEACON_CHANNEL_FREQ 869525000
/*!
* Beacon default frequency
*/
#define EU868_PING_CHANNEL_FREQ 869525000
/*!
* Size of RFU 1 field
*/
#define EU868_BEACON_RFU1_SIZE 2
/*!
* Size of RFU 2 field
*/
#define EU868_BEACON_RFU2_SIZE 0
/*!
* Datarate of the beacon channel
*/
#define EU868_BEACON_CHANNEL_DR DR_3
/*!
* Random ack timeout limits
*/
@ -344,6 +369,11 @@ LoRaPHYEU868::LoRaPHYEU868()
phy_params.ack_timeout_rnd = EU868_ACK_TIMEOUT_RND;
phy_params.rx_window2_datarate = EU868_RX_WND_2_DR;
phy_params.rx_window2_frequency = EU868_RX_WND_2_FREQ;
phy_params.beacon.default_frequency = EU868_BEACON_CHANNEL_FREQ;
phy_params.beacon.datarate = EU868_BEACON_CHANNEL_DR;
phy_params.beacon.rfu1_size = EU868_BEACON_RFU1_SIZE;
phy_params.beacon.rfu2_size = EU868_BEACON_RFU2_SIZE;
phy_params.ping_slot_default_frequency = EU868_PING_CHANNEL_FREQ;
}
LoRaPHYEU868::~LoRaPHYEU868()

30
features/lorawan/lorastack/phy/LoRaPHYIN865.cpp
View File

@ -178,6 +178,30 @@
*/
#define IN865_RX_WND_2_DR DR_2
/*!
* Beacon frequency
*/
#define IN865_BEACON_CHANNEL_FREQ 866500000
/*!
* Ping slot default frequency
*/
#define IN865_PING_CHANNEL_FREQ 866500000
/*!
* Size of RFU1 field
*/
#define IN865_BEACON_RFU1_SIZE 1
/*!
* Size of RFU2 field
*/
#define IN865_BEACON_RFU2_SIZE 3
/*!
* Datarate of the beacon channel
*/
#define IN865_BEACON_CHANNEL_DR DR_4
/*!
* Band 0 definition
* { DutyCycle, TxMaxPower, LastJoinTxDoneTime, LastTxDoneTime, TimeOff }
@ -315,6 +339,12 @@ LoRaPHYIN865::LoRaPHYIN865()
phy_params.ack_timeout_rnd = IN865_ACK_TIMEOUT_RND;
phy_params.rx_window2_datarate = IN865_RX_WND_2_DR;
phy_params.rx_window2_frequency = IN865_RX_WND_2_FREQ;
phy_params.beacon.default_frequency = IN865_BEACON_CHANNEL_FREQ;
phy_params.beacon.datarate = IN865_BEACON_CHANNEL_DR;
phy_params.beacon.rfu1_size = IN865_BEACON_RFU1_SIZE;
phy_params.beacon.rfu2_size = IN865_BEACON_RFU2_SIZE;
phy_params.ping_slot_default_frequency = IN865_PING_CHANNEL_FREQ;
}
LoRaPHYIN865::~LoRaPHYIN865()

29
features/lorawan/lorastack/phy/LoRaPHYKR920.cpp
View File

@ -182,6 +182,30 @@
*/
#define KR920_RX_WND_2_DR DR_0
/*!
* Beacon frequency
*/
#define KR920_BEACON_CHANNEL_FREQ 923100000
/*!
* Ping slot default frequency
*/
#define KR920_PING_CHANNEL_FREQ 923100000
/*!
* Size of RFU1 field
*/
#define KR920_BEACON_RFU1_SIZE 2
/*!
* Size of RFU2 field
*/
#define KR920_BEACON_RFU2_SIZE 0
/*!
* Datarate of the beacon channel
*/
#define KR920_BEACON_CHANNEL_DR DR_3
/*!
* Band 0 definition
* { DutyCycle, TxMaxPower, LastJoinTxDoneTime, LastTxDoneTime, TimeOff }
@ -324,6 +348,11 @@ LoRaPHYKR920::LoRaPHYKR920()
phy_params.ack_timeout_rnd = KR920_ACK_TIMEOUT_RND;
phy_params.rx_window2_datarate = KR920_RX_WND_2_DR;
phy_params.rx_window2_frequency = KR920_RX_WND_2_FREQ;
phy_params.beacon.default_frequency = KR920_BEACON_CHANNEL_FREQ;
phy_params.beacon.datarate = KR920_BEACON_CHANNEL_DR;
phy_params.beacon.rfu1_size = KR920_BEACON_RFU1_SIZE;
phy_params.beacon.rfu2_size = KR920_BEACON_RFU2_SIZE;
phy_params.ping_slot_default_frequency = KR920_PING_CHANNEL_FREQ;
}
LoRaPHYKR920::~LoRaPHYKR920()

135
features/lorawan/lorastack/phy/LoRaPHYUS915.cpp
View File

@ -180,6 +180,50 @@ static const band_t US915_BAND0 = { 1, US915_MAX_TX_POWER, 0, 0, 0 }; // 100.0
*/
#define US915_STEPWIDTH_RX1_CHANNEL ( (uint32_t) 600000 )
/*
* CLASS B
*/
/*!
* Beacon frequency
*/
#define US915_BEACON_CHANNEL_FREQ 923300000
/*!
* Beacon frequency channel stepwidth
*/
#define US915_BEACON_CHANNEL_STEPWIDTH 600000
/*!
* Number of possible beacon channels
*/
#define US915_BEACON_NB_CHANNELS 8
/*!
* Payload size of a beacon frame
*/
#define US915_BEACON_SIZE 23
/*!
* Payload size of a beacon frame
*/
#define US915_BEACON_PREAMBLE_LEN 10
/*!
* Size of RFU 1 field
*/
#define US915_RFU1_SIZE 5
/*!
* Size of RFU 2 field
*/
#define US915_RFU2_SIZE 3
/*!
* Datarate of the beacon channel
*/
#define US915_BEACON_CHANNEL_DR DR_8
/*!
* Data rates table definition
*/
@ -313,6 +357,11 @@ LoRaPHYUS915::LoRaPHYUS915()
phy_params.ack_timeout_rnd = US915_ACK_TIMEOUT_RND;
phy_params.rx_window2_datarate = US915_RX_WND_2_DR;
phy_params.rx_window2_frequency = US915_RX_WND_2_FREQ;
phy_params.beacon.default_frequency = US915_BEACON_CHANNEL_FREQ;
phy_params.beacon.datarate = US915_BEACON_CHANNEL_DR;
phy_params.beacon.rfu1_size = US915_RFU1_SIZE;
phy_params.beacon.rfu2_size = US915_RFU2_SIZE;
}
LoRaPHYUS915::~LoRaPHYUS915()
@ -350,68 +399,6 @@ void LoRaPHYUS915::restore_default_channels()
intersect_channel_mask(channel_mask, current_channel_mask, US915_CHANNEL_MASK_SIZE);
}
bool LoRaPHYUS915::rx_config(rx_config_params_t *config)
{
int8_t dr = config->datarate;
uint8_t max_payload = 0;
int8_t phy_dr = 0;
uint32_t frequency = config->frequency;
_radio->lock();
if (_radio->get_status() != RF_IDLE) {
_radio->unlock();
return false;
}
_radio->unlock();
// For US915 spectrum, we have 8 Downstream channels, MAC would have
// selected a channel randomly from 72 Upstream channels, that index is
// passed in rx_config_params_t. Based on that channel index, we choose the
// frequency for first RX slot
if (config->rx_slot == RX_SLOT_WIN_1) {
// Apply window 1 frequency
frequency = US915_FIRST_RX1_CHANNEL + (config->channel % 8) * US915_STEPWIDTH_RX1_CHANNEL;
// Caller may print the frequency to log so update it to match actual frequency
config->frequency = frequency;
}
// Read the physical datarate from the datarates table
phy_dr = datarates_US915[dr];
_radio->lock();
_radio->set_channel(frequency);
// Radio configuration
_radio->set_rx_config(MODEM_LORA, config->bandwidth, phy_dr, 1, 0,
MBED_CONF_LORA_DOWNLINK_PREAMBLE_LENGTH,
config->window_timeout, false, 0, false, 0, 0, true,
config->is_rx_continuous);
_radio->unlock();
if (config->is_repeater_supported == true) {
max_payload = max_payloads_with_repeater_US915[dr];
} else {
max_payload = max_payloads_US915[dr];
}
_radio->lock();
_radio->set_max_payload_length(MODEM_LORA, max_payload + LORA_MAC_FRMPAYLOAD_OVERHEAD);
_radio->unlock();
return true;
}
bool LoRaPHYUS915::tx_config(tx_config_params_t *config, int8_t *tx_power,
lorawan_time_t *tx_toa)
{
@ -696,3 +683,27 @@ void LoRaPHYUS915::fill_channel_mask_with_value(uint16_t *channel_mask,
channel_mask[i] = value;
}
}
uint32_t LoRaPHYUS915::get_beacon_frequency(uint32_t beacon_time)
{
uint8_t channel;
channel = (beacon_time / LORA_BEACON_INTERVAL) % US915_BEACON_NB_CHANNELS;
return US915_BEACON_CHANNEL_FREQ + (channel * US915_BEACON_CHANNEL_STEPWIDTH);
}
uint32_t LoRaPHYUS915::get_ping_slot_frequency(uint32_t dev_addr, uint32_t beacon_time)
{
uint8_t channel = (dev_addr + (beacon_time / LORA_BEACON_INTERVAL)) % US915_BEACON_NB_CHANNELS;
return US915_FIRST_RX1_CHANNEL + (channel * US915_STEPWIDTH_RX1_CHANNEL);
}
uint32_t LoRaPHYUS915::get_rx1_frequency(uint8_t channel)
{
// For US915 spectrum, we have 8 Downstream channels, MAC would have
// selected a channel randomly from 72 Upstream channels, that index is
// passed in rx_config_params_t. Based on that channel index, we choose the
// frequency for first RX slot
return US915_FIRST_RX1_CHANNEL + (channel % 8) * US915_STEPWIDTH_RX1_CHANNEL;
}

8
features/lorawan/lorastack/phy/LoRaPHYUS915.h
View File

@ -58,8 +58,6 @@ public:
virtual void restore_default_channels();
virtual bool rx_config(rx_config_params_t *config);
virtual bool tx_config(tx_config_params_t *config, int8_t *tx_power,
lorawan_time_t *tx_toa);
@ -77,6 +75,12 @@ public:
virtual uint8_t apply_DR_offset(int8_t dr, int8_t dr_offset);
virtual uint32_t get_rx1_frequency(uint8_t channel);
virtual uint32_t get_beacon_frequency(uint32_t beacon_time);
virtual uint32_t get_ping_slot_frequency(uint32_t dev_addr, uint32_t beacon_time);
private:
/**