bool LoRaPHYUS915::tx_config(tx_config_params_t* config, int8_t* tx_power,
lorawan_time_t* tx_toa)
{
int8_t phy_dr = datarates_US915[config->datarate];
int8_t tx_power_limited = limit_tx_power(config->tx_power,
bands[channels[config->channel].band].max_tx_pwr,
config->datarate);
uint32_t bandwidth = get_bandwidth(config->datarate);
int8_t phy_tx_power = 0;
// Calculate physical TX power
phy_tx_power = compute_tx_power( tx_power_limited, US915_DEFAULT_MAX_ERP, 0 );
_radio->lock();
_radio->set_channel(channels[config->channel].frequency);
_radio->set_tx_config(MODEM_LORA, phy_tx_power, 0, bandwidth, phy_dr, 1, 8,
false, true, 0, 0, false, 3000);
// Setup maximum payload lenght of the radio driver
_radio->set_max_payload_length(MODEM_LORA, config->pkt_len);
// Get the time-on-air of the next tx frame
*tx_toa = _radio->time_on_air(MODEM_LORA, config->pkt_len);
_radio->unlock();
*tx_power = tx_power_limited;
return true;
}
void LoRaPHYUS915Hybrid::set_tx_cont_mode(cw_mode_params_t* params, uint32_t given_frequency)
{
(void)given_frequency;
int8_t tx_power_limited = limit_tx_power(params->tx_power,
bands[channels[params->channel].band].max_tx_pwr,
params->datarate);
int8_t phy_tx_power = 0;
uint32_t frequency = channels[params->channel].frequency;
// Calculate physical TX power
phy_tx_power = compute_tx_power(tx_power_limited, US915_HYBRID_DEFAULT_MAX_ERP, 0);
_radio->lock();
_radio->set_tx_continuous_wave(frequency, phy_tx_power, params->timeout);
_radio->unlock();
}
bool LoRaPHYKR920::tx_config(tx_config_params_t* config, int8_t* tx_power,
lorawan_time_t* tx_toa)
{
int8_t phy_dr = datarates_KR920[config->datarate];
if (config->tx_power > bands[channels[config->channel].band].max_tx_pwr) {
config->tx_power = bands[channels[config->channel].band].max_tx_pwr;
}
uint32_t bandwidth = get_bandwidth(config->datarate);
float max_eirp = get_max_eirp(channels[config->channel].frequency);
int8_t phy_tx_power = 0;
// Take the minimum between the max_eirp and txConfig->MaxEirp.
// The value of txConfig->MaxEirp could have changed during runtime, e.g. due to a MAC command.
max_eirp = MIN(config->max_eirp, max_eirp);
// Calculate physical TX power
phy_tx_power = compute_tx_power(config->tx_power, max_eirp, config->antenna_gain);
// Setup the radio frequency
_radio->lock();
_radio->set_channel(channels[config->channel].frequency);
_radio->set_tx_config(MODEM_LORA, phy_tx_power, 0, bandwidth, phy_dr, 1, 8,
false, true, 0, 0, false, 3000 );
// Setup maximum payload lenght of the radio driver
_radio->set_max_payload_length(MODEM_LORA, config->pkt_len);
// Get the time-on-air of the next tx frame
*tx_toa =_radio->time_on_air(MODEM_LORA, config->pkt_len);
_radio->unlock();
*tx_power = config->tx_power;
return true;
}
bool LoRaPHYCN470::tx_config(tx_config_params_t* config, int8_t* tx_power,
lorawan_time_t* tx_toa)
{
int8_t phy_dr = datarates_CN470[config->datarate];
if (config->tx_power > bands[channels[config->channel].band].max_tx_pwr) {
config->tx_power = bands[channels[config->channel].band].max_tx_pwr;
}
int8_t phy_tx_power = 0;
// Calculate physical TX power
phy_tx_power = compute_tx_power(config->tx_power, config->max_eirp,
config->antenna_gain);
// acquire lock to radio
_radio->lock();
_radio->set_channel(channels[config->channel].frequency);
_radio->set_tx_config(MODEM_LORA, phy_tx_power, 0, 0, phy_dr, 1,
MBED_CONF_LORA_UPLINK_PREAMBLE_LENGTH, false, true,
0, 0, false, 3000);
// Setup maximum payload lenght of the radio driver
_radio->set_max_payload_length(MODEM_LORA, config->pkt_len);
// Get the time-on-air of the next tx frame
*tx_toa = _radio->time_on_air(MODEM_LORA, config->pkt_len);
// release lock to radio
_radio->unlock();
*tx_power = config->tx_power;
return true;
}
void LoRaPHYKR920::set_tx_cont_mode(cw_mode_params_t* params, uint32_t given_frequency)
{
(void)given_frequency;
if (params->tx_power > bands[channels[params->channel].band].max_tx_pwr) {
params->tx_power = bands[channels[params->channel].band].max_tx_pwr;
}
float max_eirp = get_max_eirp(channels[params->channel].frequency);
int8_t phy_tx_power = 0;
uint32_t frequency = channels[params->channel].frequency;
// Take the minimum between the max_eirp and params->max_eirp.
// The value of params->max_eirp could have changed during runtime,
// e.g. due to a MAC command.
max_eirp = MIN (params->max_eirp, max_eirp);
// Calculate physical TX power
phy_tx_power = compute_tx_power(params->tx_power, max_eirp, params->antenna_gain);
_radio->lock();
_radio->set_tx_continuous_wave(frequency, phy_tx_power, params->timeout);
_radio->unlock();
}