Brunno Oliveira
Driver for SX1272 connected to Pulga devices using only DIO0 pins and polling (error states and timeout).
Dependents: pulga-mbed-lorawan-gps mbed-lorawan-pulga mbed-lorawan-pulga-testing-channel mbed-lorawan-pulga-serial_rx ... more
Diff: SX126X/SX126X_LoRaRadio.cpp
- Revision:
- 0:561d07a737bc
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SX126X/SX126X_LoRaRadio.cpp Thu Nov 12 19:26:24 2020 +0000
@@ -0,0 +1,1334 @@
+/**
+ / _____) _ | |
+( (____ _____ ____ _| |_ _____ ____| |__
+ \____ \| ___ | (_ _) ___ |/ ___) _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+(______/|_____)_|_|_| \__)_____)\____)_| |_|
+ (C)2015 Semtech
+ ___ _____ _ ___ _ _____ ___ ___ ___ ___
+/ __|_ _/_\ / __| |/ / __/ _ \| _ \/ __| __|
+\__ \ | |/ _ \ (__| ' <| _| (_) | / (__| _|
+|___/ |_/_/ \_\___|_|\_\_| \___/|_|_\\___|___|
+embedded.connectivity.solutions===============
+
+Description: LoRaWAN stack layer that controls both MAC and PHY underneath
+
+License: Revised BSD License, see LICENSE.TXT file include in the project
+
+Maintainer: Miguel Luis, Gregory Cristian & Gilbert Menth
+
+Copyright (c) 2019, Arm Limited and affiliates.
+
+SPDX-License-Identifier: BSD-3-Clause
+*/
+
+#include <math.h>
+#include "mbed_wait_api.h"
+#include "Timer.h"
+#include "SX126X_LoRaRadio.h"
+
+#ifdef MBED_CONF_SX126X_LORA_DRIVER_SPI_FREQUENCY
+#define SPI_FREQUENCY MBED_CONF_SX126X_LORA_DRIVER_SPI_FREQUENCY
+#else
+#define SPI_FREQUENCY 16000000
+#endif
+
+using namespace mbed;
+#ifdef MBED_CONF_RTOS_PRESENT
+using namespace rtos;
+/**
+ * Signals
+ */
+#define SIG_INTERRUPT 0x02
+#endif
+
+/*!
+ * FSK bandwidth definition
+ */
+typedef struct
+{
+ uint32_t bandwidth;
+ uint8_t register_value;
+} fsk_bw_t;
+
+static const fsk_bw_t fsk_bandwidths[] =
+{
+ { 4800 , 0x1F },
+ { 5800 , 0x17 },
+ { 7300 , 0x0F },
+ { 9700 , 0x1E },
+ { 11700 , 0x16 },
+ { 14600 , 0x0E },
+ { 19500 , 0x1D },
+ { 23400 , 0x15 },
+ { 29300 , 0x0D },
+ { 39000 , 0x1C },
+ { 46900 , 0x14 },
+ { 58600 , 0x0C },
+ { 78200 , 0x1B },
+ { 93800 , 0x13 },
+ { 117300, 0x0B },
+ { 156200, 0x1A },
+ { 187200, 0x12 },
+ { 234300, 0x0A },
+ { 312000, 0x19 },
+ { 373600, 0x11 },
+ { 467000, 0x09 },
+ { 500000, 0x00 }, // Invalid Bandwidth
+};
+
+const uint8_t sync_word[] = {0xC1, 0x94, 0xC1, 0x00, 0x00, 0x00, 0x00,0x00};
+
+// in ms SF12 SF11 SF10 SF9 SF8 SF7
+const float lora_symbol_time[3][6] = {{ 32.768, 16.384, 8.192, 4.096, 2.048, 1.024 }, // 125 KHz
+ { 16.384, 8.192, 4.096, 2.048, 1.024, 0.512 }, // 250 KHz
+ { 8.192, 4.096, 2.048, 1.024, 0.512, 0.256 }}; // 500 KHz
+
+SX126X_LoRaRadio::SX126X_LoRaRadio(PinName mosi,
+ PinName miso,
+ PinName sclk,
+ PinName nss,
+ PinName reset,
+ PinName dio1,
+ PinName busy,
+ PinName freq_select,
+ PinName device_select,
+ PinName crystal_select,
+ PinName ant_switch)
+ : _spi(mosi, miso, sclk),
+ _chip_select(nss, 1),
+ _reset_ctl(reset),
+ _dio1_ctl(dio1, PullNone),
+ _busy(busy, PullNone),
+ _freq_select(freq_select),
+ _dev_select(device_select),
+ _crystal_select(crystal_select, PullDown),
+ _ant_switch(ant_switch, PIN_INPUT, PullUp, 0)
+#ifdef MBED_CONF_RTOS_PRESENT
+ , irq_thread(osPriorityRealtime, 1024, NULL, "LR-SX126X")
+#endif
+{
+ _radio_events = NULL;
+ _reset_ctl = 1;
+ _image_calibrated = false;
+ _force_image_calibration = false;
+ _active_modem = MODEM_LORA;
+
+#ifdef MBED_CONF_RTOS_PRESENT
+ irq_thread.start(callback(this, &SX126X_LoRaRadio::rf_irq_task));
+#endif
+}
+
+SX126X_LoRaRadio::~SX126X_LoRaRadio()
+{
+
+}
+
+/**
+ * Acquire lock
+ */
+void SX126X_LoRaRadio::lock(void)
+{
+ mutex.lock();
+}
+
+/**
+ * Release lock
+ */
+void SX126X_LoRaRadio::unlock(void)
+{
+ mutex.unlock();
+}
+
+#ifdef MBED_CONF_RTOS_PRESENT
+/**
+ * Thread task handling IRQs
+ */
+void SX126X_LoRaRadio::rf_irq_task(void)
+{
+ for (;;) {
+ uint32_t flags = ThisThread::flags_wait_any(0x7FFFFFFF);
+
+ lock();
+ if (flags & SIG_INTERRUPT) {
+ handle_dio1_irq();
+ }
+ unlock();
+ }
+}
+#endif
+
+void SX126X_LoRaRadio::dio1_irq_isr()
+{
+#ifdef MBED_CONF_RTOS_PRESENT
+ irq_thread.flags_set(SIG_INTERRUPT);
+#else
+ handle_dio1_irq();
+#endif
+}
+
+uint16_t SX126X_LoRaRadio::get_irq_status(void)
+{
+ uint8_t status[2];
+
+ read_opmode_command((uint8_t) RADIO_GET_IRQSTATUS, status, 2);
+ return (status[0] << 8) | status[1];
+}
+
+void SX126X_LoRaRadio::clear_irq_status(uint16_t irq)
+{
+ uint8_t buf[2];
+
+ buf[0] = (uint8_t) (((uint16_t) irq >> 8) & 0x00FF);
+ buf[1] = (uint8_t) ((uint16_t) irq & 0x00FF);
+ write_opmode_command((uint8_t) RADIO_CLR_IRQSTATUS, buf, 2);
+}
+
+//TODO - Better do CAD here. CAD code is already part of the driver
+// It needs to be hooked up to the stack (this API will need change
+// and the stack will need changes too)
+bool SX126X_LoRaRadio::perform_carrier_sense(radio_modems_t modem,
+ uint32_t freq,
+ int16_t rssi_threshold,
+ uint32_t max_carrier_sense_time)
+{
+ bool status = true;
+ int16_t rssi = 0;
+
+ set_modem(modem);
+ set_channel(freq);
+ _reception_mode = RECEPTION_MODE_OTHER;
+ _rx_timeout = 0x00000000;
+ receive();
+
+ // hold on a bit, radio turn-around time
+ wait_ms(1);
+
+ Timer elapsed_time;
+ elapsed_time.start();
+
+ // Perform carrier sense for maxCarrierSenseTime
+ while (elapsed_time.read_ms() < (int) max_carrier_sense_time) {
+ rssi = get_rssi();
+
+ if (rssi > rssi_threshold) {
+ status = false;
+ break;
+ }
+ }
+
+ sleep();
+ return status;
+}
+
+void SX126X_LoRaRadio::start_cad(void)
+{
+ // TODO: CAD is more advanced in SX126X. We will need API change in LoRaRadio
+ // for this to act properly
+}
+
+/**
+ * TODO: The purpose of this API is unclear.
+ * Need to start an internal discussion.
+ */
+bool SX126X_LoRaRadio::check_rf_frequency(uint32_t frequency)
+{
+ // Implement check. Currently all frequencies are supported ? What band ?
+ return true;
+}
+
+void SX126X_LoRaRadio::set_tx_continuous_wave(uint32_t freq, int8_t power,
+ uint16_t time)
+{
+ // This is useless. We even removed the support from our MAC layer.
+}
+
+void SX126X_LoRaRadio::handle_dio1_irq()
+{
+ uint16_t irq_status = get_irq_status();
+ clear_irq_status(IRQ_RADIO_ALL);
+
+ if ((irq_status & IRQ_TX_DONE) == IRQ_TX_DONE) {
+ if (_radio_events->tx_done) {
+ _radio_events->tx_done();
+ }
+ }
+
+ if ((irq_status & IRQ_RX_DONE) == IRQ_RX_DONE) {
+ if ((irq_status & IRQ_CRC_ERROR) == IRQ_CRC_ERROR) {
+ if (_radio_events && _radio_events->rx_error) {
+ _radio_events->rx_error();
+ }
+ } else {
+ if (_radio_events->rx_done) {
+ uint8_t offset = 0;
+ uint8_t payload_len = 0;
+ int16_t rssi = 0;
+ int8_t snr = 0;
+ packet_status_t pkt_status;
+
+ get_rx_buffer_status(&payload_len, &offset);
+ read_fifo(_data_buffer, payload_len, offset);
+ get_packet_status(&pkt_status);
+ if (pkt_status.modem_type == MODEM_FSK) {
+ rssi = pkt_status.params.gfsk.rssi_sync;
+ } else {
+ rssi = pkt_status.params.lora.rssi_pkt;
+ snr = pkt_status.params.lora.snr_pkt;
+ }
+
+ _radio_events->rx_done(_data_buffer, payload_len, rssi, snr);
+ }
+ }
+ }
+
+ if ((irq_status & IRQ_CAD_DONE) == IRQ_CAD_DONE) {
+ if (_radio_events->cad_done) {
+ _radio_events->cad_done((irq_status & IRQ_CAD_ACTIVITY_DETECTED)
+ == IRQ_CAD_ACTIVITY_DETECTED);
+ }
+ }
+
+ if ((irq_status & IRQ_RX_TX_TIMEOUT) == IRQ_RX_TX_TIMEOUT) {
+ if ((_radio_events->tx_timeout) && (_operation_mode == MODE_TX)) {
+ _radio_events->tx_timeout();
+ } else if ((_radio_events && _radio_events->rx_timeout) && (_operation_mode == MODE_RX)) {
+ _radio_events->rx_timeout();
+ }
+ }
+}
+
+void SX126X_LoRaRadio::set_device_ready(void)
+{
+ if (_operation_mode == MODE_SLEEP) {
+ wakeup();
+ }
+}
+
+void SX126X_LoRaRadio::calibrate_image(uint32_t freq)
+{
+ uint8_t cal_freq[2];
+
+ if (freq > 900000000) {
+ cal_freq[0] = 0xE1;
+ cal_freq[1] = 0xE9;
+ } else if (freq > 850000000) {
+ cal_freq[0] = 0xD7;
+ cal_freq[1] = 0xD8;
+ } else if (freq > 770000000) {
+ cal_freq[0] = 0xC1;
+ cal_freq[1] = 0xC5;
+ } else if (freq > 460000000) {
+ cal_freq[0] = 0x75;
+ cal_freq[1] = 0x81;
+ } else if (freq > 425000000) {
+ cal_freq[0] = 0x6B;
+ cal_freq[1] = 0x6F;
+ }
+
+ write_opmode_command((uint8_t) RADIO_CALIBRATEIMAGE, cal_freq, 2);
+
+ _image_calibrated = true;
+}
+
+void SX126X_LoRaRadio::set_channel(uint32_t frequency)
+{
+#if MBED_CONF_SX126X_LORA_DRIVER_SLEEP_MODE == 1
+ // At this point, we are not sure what is the Modem type, set both
+ _mod_params.params.lora.operational_frequency = frequency;
+ _mod_params.params.gfsk.operational_frequency = frequency;
+#endif
+
+ uint8_t buf[4];
+ uint32_t freq = 0;
+
+ if ( _force_image_calibration || !_image_calibrated) {
+ calibrate_image(frequency);
+ _image_calibrated = true;
+ }
+
+ freq = (uint32_t) ceil(((float) frequency / (float) FREQ_STEP));
+ buf[0] = (uint8_t) ((freq >> 24) & 0xFF);
+ buf[1] = (uint8_t) ((freq >> 16) & 0xFF);
+ buf[2] = (uint8_t) ((freq >> 8) & 0xFF);
+ buf[3] = (uint8_t) (freq & 0xFF);
+
+ write_opmode_command((uint8_t) RADIO_SET_RFFREQUENCY, buf, 4);
+}
+
+/**
+ * Put radio in Standby mode
+ */
+void SX126X_LoRaRadio::standby(void)
+{
+ if (_operation_mode == MODE_STDBY_RC) {
+ return;
+ }
+
+ set_device_ready();
+ uint8_t standby_mode = MBED_CONF_SX126X_LORA_DRIVER_STANDBY_MODE;
+ write_opmode_command((uint8_t) RADIO_SET_STANDBY, &standby_mode, 1);
+
+ if (standby_mode == STDBY_RC) {
+ _operation_mode = MODE_STDBY_RC;
+ } else {
+ _operation_mode = MODE_STDBY_XOSC;
+ }
+}
+
+void SX126X_LoRaRadio::set_dio2_as_rfswitch_ctrl(uint8_t enable)
+{
+ write_opmode_command(RADIO_SET_RFSWITCHMODE, &enable, 1);
+}
+
+void SX126X_LoRaRadio::set_dio3_as_tcxo_ctrl(radio_TCXO_ctrl_voltage_t voltage,
+ uint32_t timeout)
+{
+ uint8_t buf[4];
+
+ buf[0] = voltage & 0x07;
+ buf[1] = (uint8_t) ((timeout >> 16) & 0xFF);
+ buf[2] = (uint8_t) ((timeout >> 8) & 0xFF);
+ buf[3] = (uint8_t) (timeout & 0xFF);
+
+ write_opmode_command(RADIO_SET_TCXOMODE, buf, 4);
+}
+
+void SX126X_LoRaRadio::init_radio(radio_events_t *events)
+{
+ _radio_events = events;
+
+ // attach DIO1 interrupt line to its respective ISR
+ _dio1_ctl.rise(callback(this, &SX126X_LoRaRadio::dio1_irq_isr));
+
+ uint8_t freq_support = get_frequency_support();
+
+ // Hold chip-select high
+ _chip_select = 1;
+ _spi.format(8, 0);
+ _spi.frequency(SPI_FREQUENCY);
+ // 100 us wait to settle down
+ wait_us(100);
+
+ radio_reset();
+
+#if MBED_CONF_LORA_PUBLIC_NETWORK
+ _network_mode_public = true;
+#else
+ _network_mode_public = false;
+#endif
+
+ // this is a POR sequence
+ cold_start_wakeup();
+}
+
+void SX126X_LoRaRadio::cold_start_wakeup()
+{
+ uint8_t regulator_mode = MBED_CONF_SX126X_LORA_DRIVER_REGULATOR_MODE;
+ write_opmode_command(RADIO_SET_REGULATORMODE, ®ulator_mode, 1);
+ set_buffer_base_addr(0x00, 0x00);
+
+ if (_crystal_select.is_connected() && _crystal_select == 0) {
+ caliberation_params_t calib_param;
+ set_dio3_as_tcxo_ctrl(TCXO_CTRL_1_7V, 320); //5 ms
+ calib_param.value = 0x7F;
+ write_opmode_command(RADIO_CALIBRATE, &calib_param.value, 1);
+ }
+
+ set_dio2_as_rfswitch_ctrl(true);
+
+ _operation_mode = MODE_STDBY_RC;
+
+ set_modem(_active_modem);
+
+ if (_active_modem == MODEM_LORA) {
+ set_public_network(_network_mode_public);
+ }
+}
+
+void SX126X_LoRaRadio::set_public_network(bool enable)
+{
+ if (enable) {
+ // Change LoRa modem SyncWord
+ write_to_register(REG_LR_SYNCWORD, (LORA_MAC_PUBLIC_SYNCWORD >> 8) & 0xFF);
+ write_to_register(REG_LR_SYNCWORD + 1, LORA_MAC_PUBLIC_SYNCWORD & 0xFF);
+ } else {
+ // Change LoRa modem SyncWord
+ write_to_register(REG_LR_SYNCWORD, (LORA_MAC_PRIVATE_SYNCWORD >> 8) & 0xFF);
+ write_to_register(REG_LR_SYNCWORD + 1, LORA_MAC_PRIVATE_SYNCWORD & 0xFF);
+ }
+}
+
+uint32_t SX126X_LoRaRadio::time_on_air(radio_modems_t modem, uint8_t pkt_len)
+{
+ uint32_t air_time = 0;
+
+ switch (modem) {
+ case MODEM_FSK: {
+ air_time = rint((8 * (_packet_params.params.gfsk.preamble_length
+ + (_packet_params.params.gfsk.syncword_length >> 3)
+ + ((_packet_params.params.gfsk.header_type
+ == RADIO_PACKET_FIXED_LENGTH) ? 0.0f : 1.0f) + pkt_len
+ + ((_packet_params.params.gfsk.crc_length == RADIO_CRC_2_BYTES) ? 2.0f : 0.0f))
+ / _mod_params.params.gfsk.bit_rate) * 1000);
+ }
+ break;
+ case MODEM_LORA: {
+ float ts = lora_symbol_time[_mod_params.params.lora.bandwidth - 4][12
+ - _mod_params.params.lora.spreading_factor];
+ // time of preamble
+ float t_preamble = (_packet_params.params.lora.preamble_length + 4.25f) * ts;
+ // Symbol length of payload and time
+ float tmp = ceil((8 * pkt_len - 4 * _mod_params.params.lora.spreading_factor
+ + 28 + 16 * _packet_params.params.lora.crc_mode
+ - ((_packet_params.params.lora.header_type == LORA_PACKET_FIXED_LENGTH) ? 20 : 0))
+ / (float) (4 * (_mod_params.params.lora.spreading_factor
+ - ((_mod_params.params.lora.low_datarate_optimization > 0) ? 2 : 0))))
+ * ((_mod_params.params.lora.coding_rate % 4) + 4);
+ float n_payload = 8 + ((tmp > 0) ? tmp : 0);
+ float t_payload = n_payload * ts;
+ // Time on air
+ float tOnAir = t_preamble + t_payload;
+ // return milliseconds (as ts is in milliseconds)
+ air_time = floor(tOnAir + 0.999);
+ }
+ break;
+ }
+
+ return air_time;
+}
+
+void SX126X_LoRaRadio::radio_reset()
+{
+ _reset_ctl.output();
+ _reset_ctl = 0;
+ // should be enough, required is 50-100 us
+ wait_ms(2);
+ _reset_ctl.input();
+ // give some time for automatic image calibration
+ wait_ms(6);
+}
+
+void SX126X_LoRaRadio::wakeup()
+{
+ // hold the NSS low, this should wakeup the chip.
+ // now we should wait for the _busy line to go low
+ if (_operation_mode == MODE_SLEEP) {
+ _chip_select = 0;
+ wait_us(100);
+ _chip_select = 1;
+ //wait_us(100);
+#if MBED_CONF_SX126X_LORA_DRIVER_SLEEP_MODE == 1
+ wait_us(3500);
+ // whenever we wakeup from Cold sleep state, we need to perform
+ // image calibration
+ _force_image_calibration = true;
+ cold_start_wakeup();
+#endif
+ }
+}
+
+void SX126X_LoRaRadio::sleep(void)
+{
+ // warm start, power consumption 600 nA
+ uint8_t sleep_state = 0x04;
+ _operation_mode = MODE_SLEEP;
+
+#if MBED_CONF_SX126X_LORA_DRIVER_SLEEP_MODE == 1
+ // cold start, power consumption 160 nA
+ sleep_state = 0x00;
+#endif
+
+ write_opmode_command(RADIO_SET_SLEEP, &sleep_state, 1);
+ wait_ms(2);
+}
+
+uint32_t SX126X_LoRaRadio::random(void)
+{
+ set_modem(MODEM_LORA);
+ uint8_t buf[] = {0, 0, 0, 0};
+
+ // Set radio in continuous reception
+ _reception_mode = RECEPTION_MODE_OTHER;
+ _rx_timeout = 0xFFFFFFFF;
+ receive();
+ wait_ms(1);
+ read_register(RANDOM_NUMBER_GENERATORBASEADDR, buf, 4);
+ standby();
+
+ return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+}
+
+void SX126X_LoRaRadio::write_opmode_command(uint8_t cmd, uint8_t *buffer, uint16_t size)
+{
+ _chip_select = 0;
+
+ while (_busy) {
+ // do nothing
+ }
+
+ _spi.write(cmd);
+
+ for (int i = 0; i < size; i++) {
+ _spi.write(buffer[i]);
+ }
+
+ _chip_select = 1;
+}
+
+void SX126X_LoRaRadio::read_opmode_command(uint8_t cmd,
+ uint8_t *buffer, uint16_t size)
+{
+ _chip_select = 0;
+
+ while (_busy) {
+ // do nothing
+ }
+
+ _spi.write(cmd);
+ _spi.write(0);
+
+ for (int i = 0; i < size; i++) {
+ buffer[i] = _spi.write(0);
+ }
+
+ _chip_select = 1;
+}
+
+void SX126X_LoRaRadio::write_to_register(uint16_t addr, uint8_t data)
+{
+ write_to_register(addr, &data, 1);
+}
+
+void SX126X_LoRaRadio::write_to_register(uint16_t addr, uint8_t *data,
+ uint8_t size)
+{
+ _chip_select = 0;
+
+ _spi.write(RADIO_WRITE_REGISTER);
+ _spi.write((addr & 0xFF00) >> 8);
+ _spi.write(addr & 0x00FF);
+
+ for (int i = 0; i < size; i++) {
+ _spi.write(data[i]);
+ }
+
+ _chip_select = 1;
+}
+
+uint8_t SX126X_LoRaRadio::read_register(uint16_t addr)
+{
+ uint8_t data;
+ read_register(addr, &data, 1);
+ return data;
+
+}
+
+void SX126X_LoRaRadio::read_register(uint16_t addr, uint8_t *buffer,
+ uint8_t size)
+{
+ _chip_select = 0;
+
+ _spi.write(RADIO_READ_REGISTER);
+ _spi.write((addr & 0xFF00) >> 8);
+ _spi.write(addr & 0x00FF);
+ _spi.write(0);
+
+ for (int i = 0; i < size; i++) {
+ buffer[i] = _spi.write(0);
+ }
+
+ _chip_select = 1;
+}
+
+void SX126X_LoRaRadio::write_fifo(uint8_t *buffer, uint8_t size)
+{
+ _chip_select = 0;
+
+ _spi.write(RADIO_WRITE_BUFFER);
+ _spi.write(0);
+
+ for (int i = 0; i < size; i++) {
+ _spi.write(buffer[i]);
+ }
+
+ _chip_select = 1;
+}
+
+void SX126X_LoRaRadio::set_modem(uint8_t modem)
+{
+ _active_modem = modem;
+
+ // setting modem type must happen in stnadby mode
+ if (_operation_mode != MODE_STDBY_RC) {
+ standby();
+ }
+
+ write_opmode_command(RADIO_SET_PACKETTYPE, &_active_modem, 1);
+}
+
+uint8_t SX126X_LoRaRadio::get_modem()
+{
+ return _active_modem;
+}
+
+void SX126X_LoRaRadio::read_fifo(uint8_t *buffer, uint8_t size, uint8_t offset)
+{
+ _chip_select = 0;
+
+ _spi.write(RADIO_READ_BUFFER);
+ _spi.write(offset);
+ _spi.write(0);
+
+ for (int i = 0; i < size; i++) {
+ buffer[i] = _spi.write(0);
+ }
+
+ _chip_select = 1;
+}
+
+uint8_t SX126X_LoRaRadio::get_device_variant(void)
+{
+ uint16_t val = 0;
+ val = _dev_select.read_u16();
+
+ if (val <= 0x2000) {
+ return SX1262;
+ } else if (val <= 0xA000) {
+ return SX1268;
+ } else {
+ return SX1261;
+ }
+}
+
+uint8_t SX126X_LoRaRadio::get_frequency_support(void)
+{
+ uint16_t val = 0;
+ val = _freq_select.read_u16();
+
+ if (val < 100) {
+ return ( MATCHING_FREQ_915);
+ } else if (val <= 0x3000) {
+ return ( MATCHING_FREQ_780);
+ } else if (val <= 0x4900) { // 0x4724
+ return ( MATCHING_FREQ_490);
+ } else if (val <= 1) {
+ return ( MATCHING_FREQ_434);
+ } else if (val <= 1) {
+ return ( MATCHING_FREQ_280);
+ } else if (val <= 0xF000) {
+ return ( MATCHING_FREQ_169);
+ } else {
+ return ( MATCHING_FREQ_868);
+ }
+}
+
+uint8_t SX126X_LoRaRadio::get_fsk_bw_reg_val(uint32_t bandwidth)
+{
+ uint8_t i;
+
+ for (i = 0; i < (sizeof(fsk_bandwidths) / sizeof(fsk_bw_t)) - 1; i++) {
+ if ((bandwidth >= fsk_bandwidths[i].bandwidth)
+ && (bandwidth < fsk_bandwidths[i + 1].bandwidth)) {
+ return fsk_bandwidths[i].register_value;
+ }
+ }
+ // ERROR: Value not found
+ // This should never happen
+ while (1);
+}
+
+void SX126X_LoRaRadio::set_max_payload_length(radio_modems_t modem, uint8_t max)
+{
+ if (modem == MODEM_LORA) {
+ _packet_params.params.lora.payload_length = max;
+ } else {
+ _packet_params.params.gfsk.payload_length = max;
+ }
+}
+
+void SX126X_LoRaRadio::set_tx_config(radio_modems_t modem,
+ int8_t power,
+ uint32_t fdev,
+ uint32_t bandwidth,
+ uint32_t datarate,
+ uint8_t coderate,
+ uint16_t preamble_len,
+ bool fix_len,
+ bool crc_on,
+ bool freq_hop_on,
+ uint8_t hop_period,
+ bool iq_inverted,
+ uint32_t timeout)
+{
+
+ uint8_t modem_type = (uint8_t) modem;
+ switch (modem_type) {
+ case MODEM_FSK:
+ _mod_params.modem_type = MODEM_FSK;
+ _mod_params.params.gfsk.bit_rate = datarate;
+
+ _mod_params.params.gfsk.modulation_shaping = MOD_SHAPING_G_BT_1;
+ _mod_params.params.gfsk.bandwidth = get_fsk_bw_reg_val(bandwidth);
+ _mod_params.params.gfsk.fdev = fdev;
+
+ _packet_params.modem_type = MODEM_FSK;
+ _packet_params.params.gfsk.preamble_length = (preamble_len << 3); // convert byte into bit
+ _packet_params.params.gfsk.preamble_min_detect = RADIO_PREAMBLE_DETECTOR_08_BITS;
+ _packet_params.params.gfsk.syncword_length = 3 << 3; // convert byte into bit
+ _packet_params.params.gfsk.addr_comp = RADIO_ADDRESSCOMP_FILT_OFF;
+ _packet_params.params.gfsk.header_type = (fix_len == true) ?
+ RADIO_PACKET_FIXED_LENGTH :
+ RADIO_PACKET_VARIABLE_LENGTH;
+
+ if (crc_on) {
+ _packet_params.params.gfsk.crc_length = RADIO_CRC_2_BYTES_CCIT;
+ } else {
+ _packet_params.params.gfsk.crc_length = RADIO_CRC_OFF;
+ }
+ _packet_params.params.gfsk.whitening_mode = RADIO_DC_FREEWHITENING;
+
+ set_modem(MODEM_FSK);
+
+ write_to_register(REG_LR_SYNCWORDBASEADDRESS, (uint8_t *) sync_word, 8);
+ set_whitening_seed(0x01FF);
+ break;
+
+ case MODEM_LORA:
+ _mod_params.modem_type = MODEM_LORA;
+ _mod_params.params.lora.spreading_factor = (lora_spread_factors_t) datarate;
+ _mod_params.params.lora.bandwidth = (lora_bandwidths_t) lora_bandwidhts[bandwidth];
+ _mod_params.params.lora.coding_rate = (lora_coding_tates_t) coderate;
+
+ if (((bandwidth == 0) && ((datarate == 11) || (datarate == 12)))
+ || ((bandwidth == 1) && (datarate == 12))) {
+ _mod_params.params.lora.low_datarate_optimization = 0x01;
+ } else {
+ _mod_params.params.lora.low_datarate_optimization = 0x00;
+ }
+
+ _packet_params.modem_type = MODEM_LORA;
+
+ if ((_mod_params.params.lora.spreading_factor == LORA_SF5)
+ || (_mod_params.params.lora.spreading_factor == LORA_SF6)) {
+ if (preamble_len < 12) {
+ _packet_params.params.lora.preamble_length = 12;
+ } else {
+ _packet_params.params.lora.preamble_length = preamble_len;
+ }
+ } else {
+ _packet_params.params.lora.preamble_length = preamble_len;
+ }
+
+ _packet_params.params.lora.header_type = (lora_pkt_length_t) fix_len;
+ _packet_params.params.lora.crc_mode = (lora_crc_mode_t) crc_on;
+ _packet_params.params.lora.invert_IQ = (lora_IQ_mode_t) iq_inverted;
+
+ set_modem(MODEM_LORA);
+
+ break;
+ }
+
+ _tx_power = power;
+ _tx_timeout = timeout;
+}
+
+void SX126X_LoRaRadio::set_rx_config(radio_modems_t modem,
+ uint32_t bandwidth,
+ uint32_t datarate,
+ uint8_t coderate,
+ uint32_t bandwidthAfc,
+ uint16_t preamble_len,
+ uint16_t symb_timeout,
+ bool fix_len,
+ uint8_t payload_len,
+ bool crc_on,
+ bool freq_hop_on,
+ uint8_t hop_period,
+ bool iq_inverted,
+ bool rx_continuous)
+{
+ uint8_t max_payload_len;
+ (void) freq_hop_on;
+ (void) hop_period;
+
+ if (rx_continuous) {
+ _reception_mode = RECEPTION_MODE_CONTINUOUS;
+ } else {
+ _reception_mode = RECEPTION_MODE_SINGLE;
+ }
+
+ if (fix_len == true) {
+ max_payload_len = payload_len;
+ } else {
+ max_payload_len = 0xFF;
+ }
+
+ uint8_t modem_type = (uint8_t) modem;
+
+ switch (modem_type) {
+ case MODEM_FSK: {
+ _mod_params.modem_type = MODEM_FSK;
+ _mod_params.params.gfsk.bit_rate = datarate;
+ _mod_params.params.gfsk.modulation_shaping = MOD_SHAPING_G_BT_1;
+ _mod_params.params.gfsk.bandwidth = get_fsk_bw_reg_val(bandwidth);
+
+ _packet_params.modem_type = MODEM_FSK;
+ _packet_params.params.gfsk.preamble_length = (preamble_len << 3); // convert byte into bit
+ _packet_params.params.gfsk.preamble_min_detect =
+ RADIO_PREAMBLE_DETECTOR_08_BITS;
+ _packet_params.params.gfsk.syncword_length = 3 << 3; // convert byte into bit
+ _packet_params.params.gfsk.addr_comp = RADIO_ADDRESSCOMP_FILT_OFF;
+ _packet_params.params.gfsk.header_type =
+ (fix_len == true) ?
+ RADIO_PACKET_FIXED_LENGTH :
+ RADIO_PACKET_VARIABLE_LENGTH;
+ _packet_params.params.gfsk.payload_length = max_payload_len;
+
+ if (crc_on) {
+ _packet_params.params.gfsk.crc_length = RADIO_CRC_2_BYTES_CCIT;
+ } else {
+ _packet_params.params.gfsk.crc_length = RADIO_CRC_OFF;
+ }
+
+ _packet_params.params.gfsk.whitening_mode = RADIO_DC_FREEWHITENING;
+
+ set_modem(MODEM_FSK);
+
+ write_to_register(REG_LR_SYNCWORDBASEADDRESS, (uint8_t *) sync_word, 8);
+ set_whitening_seed(0x01FF);
+
+ _rx_timeout = (uint32_t) (symb_timeout
+ * ((1.0 / (float) datarate) * 8.0) * 1000);
+
+ break;
+ }
+
+ case MODEM_LORA: {
+ _rx_timeout_in_symbols = symb_timeout;
+ _mod_params.modem_type = MODEM_LORA;
+ _mod_params.params.lora.spreading_factor =
+ (lora_spread_factors_t) datarate;
+ _mod_params.params.lora.bandwidth = (lora_bandwidths_t) lora_bandwidhts[bandwidth];
+ _mod_params.params.lora.coding_rate =
+ (lora_coding_tates_t) coderate;
+
+ if (((bandwidth == 0) && ((datarate == 11) || (datarate == 12)))
+ || ((bandwidth == 1) && (datarate == 12))) {
+ _mod_params.params.lora.low_datarate_optimization = 0x01;
+ } else {
+ _mod_params.params.lora.low_datarate_optimization = 0x00;
+ }
+
+ _packet_params.modem_type = MODEM_LORA;
+
+ if ((_mod_params.params.lora.spreading_factor == LORA_SF5)
+ || (_mod_params.params.lora.spreading_factor == LORA_SF6)) {
+ if (preamble_len < 12) {
+ _packet_params.params.lora.preamble_length = 12;
+ } else {
+ _packet_params.params.lora.preamble_length = preamble_len;
+ }
+ } else {
+ _packet_params.params.lora.preamble_length = preamble_len;
+ }
+
+ _packet_params.params.lora.header_type = (lora_pkt_length_t) fix_len;
+ _packet_params.params.lora.payload_length = max_payload_len;
+ _packet_params.params.lora.crc_mode = (lora_crc_mode_t) crc_on;
+ _packet_params.params.lora.invert_IQ = (lora_IQ_mode_t) iq_inverted;
+
+ set_modem(MODEM_LORA);
+
+ if (_reception_mode == RECEPTION_MODE_CONTINUOUS) {
+ _rx_timeout = 0xFFFFFFFF;
+ } else {
+ _rx_timeout = 0x00000000;
+ }
+
+ break;
+ }
+
+ default:
+ break;
+ }
+}
+
+void SX126X_LoRaRadio::configure_dio_irq(uint16_t irq_mask, uint16_t dio1_mask,
+ uint16_t dio2_mask, uint16_t dio3_mask)
+{
+ uint8_t buf[8];
+
+ buf[0] = (uint8_t) ((irq_mask >> 8) & 0x00FF);
+ buf[1] = (uint8_t) (irq_mask & 0x00FF);
+ buf[2] = (uint8_t) ((dio1_mask >> 8) & 0x00FF);
+ buf[3] = (uint8_t) (dio1_mask & 0x00FF);
+ buf[4] = (uint8_t) ((dio2_mask >> 8) & 0x00FF);
+ buf[5] = (uint8_t) (dio2_mask & 0x00FF);
+ buf[6] = (uint8_t) ((dio3_mask >> 8) & 0x00FF);
+ buf[7] = (uint8_t) (dio3_mask & 0x00FF);
+
+ write_opmode_command((uint8_t) RADIO_CFG_DIOIRQ, buf, 8);
+}
+
+void SX126X_LoRaRadio::send(uint8_t *buffer, uint8_t size)
+{
+ set_tx_power(_tx_power);
+ configure_dio_irq(IRQ_TX_DONE | IRQ_RX_TX_TIMEOUT,
+ IRQ_TX_DONE | IRQ_RX_TX_TIMEOUT,
+ IRQ_RADIO_NONE,
+ IRQ_RADIO_NONE );
+
+ set_modulation_params(&_mod_params);
+ set_packet_params(&_packet_params);
+
+ write_fifo(buffer, size);
+ uint8_t buf[3];
+
+ // _tx_timeout in ms should be converted to us and then divided by
+ // 15.625 us. Check data-sheet 13.1.4 SetTX() section.
+ uint32_t timeout_scalled = ceil((_tx_timeout * 1000) / 15.625);
+
+ buf[0] = (uint8_t) ((timeout_scalled >> 16) & 0xFF);
+ buf[1] = (uint8_t) ((timeout_scalled >> 8) & 0xFF);
+ buf[2] = (uint8_t) (timeout_scalled & 0xFF);
+
+ write_opmode_command(RADIO_SET_TX, buf, 3);
+
+ _operation_mode = MODE_TX;
+}
+
+
+void SX126X_LoRaRadio::receive(void)
+{
+ if (get_modem() == MODEM_LORA && _reception_mode != RECEPTION_MODE_CONTINUOUS) {
+ // Data-sheet Table 13-11: StopOnPreambParam
+ // We will use radio's internal timer to mark no reception. This behaviour
+ // is different from SX1272/SX1276 where we are relying on radio to stop
+ // at preamble detection.
+ // 0x00 means Timer will be stopped on SyncWord(FSK) or Header (LoRa) detection
+ // 0x01 means Timer is stopped on preamble detection
+ uint8_t stop_at_preamble = 0x01;
+ write_opmode_command(RADIO_SET_STOPRXTIMERONPREAMBLE, &stop_at_preamble, 1);
+ // Data-sheet 13.4.9 SetLoRaSymbNumTimeout
+ write_opmode_command(RADIO_SET_LORASYMBTIMEOUT, &_rx_timeout_in_symbols, 1);
+ }
+
+ if (_reception_mode != RECEPTION_MODE_OTHER) {
+ configure_dio_irq(IRQ_RX_DONE | IRQ_RX_TX_TIMEOUT | IRQ_CRC_ERROR ,
+ IRQ_RX_DONE | IRQ_RX_TX_TIMEOUT | IRQ_CRC_ERROR ,
+ IRQ_RADIO_NONE,
+ IRQ_RADIO_NONE);
+ set_modulation_params(&_mod_params);
+ set_packet_params(&_packet_params);
+ }
+
+ uint8_t buf[3];
+
+#if MBED_CONF_SX126X_LORA_DRIVER_BOOST_RX
+ write_to_register(REG_RX_GAIN, 0x96);
+#endif
+
+ buf[0] = (uint8_t) ((_rx_timeout >> 16) & 0xFF);
+ buf[1] = (uint8_t) ((_rx_timeout >> 8) & 0xFF);
+ buf[2] = (uint8_t) (_rx_timeout & 0xFF);
+
+ write_opmode_command(RADIO_SET_RX, buf, 3);
+
+ _operation_mode = MODE_RX;
+}
+
+// check data-sheet 13.1.14.1 PA optimal settings
+void SX126X_LoRaRadio::set_tx_power(int8_t power)
+{
+ uint8_t buf[2];
+
+ if (get_device_variant() == SX1261) {
+ if (power >= 14) {
+ set_pa_config(0x04, 0x00, 0x01, 0x01);
+ power = 14;
+ } else if (power < 14){
+ set_pa_config(0x01, 0x00, 0x01, 0x01);
+ }
+
+ if (power < -3) {
+ power = -3;
+ }
+ write_to_register(REG_OCP, 0x18); // current max is 80 mA for the whole device
+ } else {
+ // sx1262 or sx1268
+ if (power > 22) {
+ power = 22;
+ } else if (power < -3) {
+ power = -3;
+ }
+
+ if (power <= 14) {
+ set_pa_config(0x02, 0x02, 0x00, 0x01);
+ } else {
+ set_pa_config(0x04, 0x07, 0x00, 0x01);
+ }
+
+ write_to_register(REG_OCP, 0x38); // current max 160mA for the whole device
+ }
+
+ buf[0] = power;
+
+ if (_crystal_select.is_connected() && _crystal_select == 0) {
+ // TCXO
+ buf[1] = RADIO_RAMP_200_US;
+ } else {
+ // XTAL
+ buf[1] = RADIO_RAMP_20_US;
+ }
+
+ write_opmode_command(RADIO_SET_TXPARAMS, buf, 2);
+}
+
+void SX126X_LoRaRadio::set_modulation_params(modulation_params_t *params)
+{
+ uint8_t n;
+ uint32_t temp = 0;
+ uint8_t buf[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+ // Check if required configuration corresponds to the stored packet type
+ // If not, silently update radio packet type
+ if (_active_modem != params->modem_type) {
+ set_modem(params->modem_type);
+ }
+
+ switch (params->modem_type) {
+ case MODEM_FSK:
+ n = 8;
+ temp = (uint32_t) (32 * ((float) XTAL_FREQ / (float) params->params.gfsk.bit_rate));
+ buf[0] = (temp >> 16) & 0xFF;
+ buf[1] = (temp >> 8) & 0xFF;
+ buf[2] = temp & 0xFF;
+ buf[3] = params->params.gfsk.modulation_shaping;
+ buf[4] = params->params.gfsk.bandwidth;
+ temp = (uint32_t) ((float) params->params.gfsk.fdev / (float) FREQ_STEP);
+ buf[5] = (temp >> 16) & 0xFF;
+ buf[6] = (temp >> 8) & 0xFF;
+ buf[7] = (temp & 0xFF);
+ write_opmode_command(RADIO_SET_MODULATIONPARAMS, buf, n);
+ break;
+
+ case MODEM_LORA:
+ n = 4;
+ buf[0] = params->params.lora.spreading_factor;
+ buf[1] = params->params.lora.bandwidth;
+ buf[2] = params->params.lora.coding_rate;
+ buf[3] = params->params.lora.low_datarate_optimization;
+
+ write_opmode_command(RADIO_SET_MODULATIONPARAMS, buf, n);
+ break;
+
+ default:
+ return;
+ }
+}
+
+void SX126X_LoRaRadio::set_pa_config(uint8_t pa_DC, uint8_t hp_max,
+ uint8_t device_type, uint8_t pa_LUT )
+{
+ uint8_t buf[4];
+
+ buf[0] = pa_DC;
+ buf[1] = hp_max;
+ buf[2] = device_type;
+ buf[3] = pa_LUT;
+ write_opmode_command(RADIO_SET_PACONFIG, buf, 4);
+}
+
+void SX126X_LoRaRadio::set_crc_seed(uint16_t seed)
+{
+ if (_active_modem == MODEM_FSK) {
+ uint8_t buf[2];
+ buf[0] = (uint8_t) ((seed >> 8) & 0xFF);
+ buf[1] = (uint8_t) (seed & 0xFF);
+ write_to_register(REG_LR_CRCSEEDBASEADDR, buf, 2);
+ }
+}
+
+void SX126X_LoRaRadio::set_crc_polynomial(uint16_t polynomial)
+{
+ if (_active_modem == MODEM_FSK) {
+ uint8_t buf[2];
+ buf[0] = (uint8_t) ((polynomial >> 8) & 0xFF);
+ buf[1] = (uint8_t) (polynomial & 0xFF);
+ write_to_register(REG_LR_CRCPOLYBASEADDR, buf, 2);
+ }
+}
+
+void SX126X_LoRaRadio::set_whitening_seed(uint16_t seed)
+{
+ if (_active_modem == MODEM_FSK) {
+ uint8_t reg_value = read_register(REG_LR_WHITSEEDBASEADDR_MSB) & 0xFE;
+ reg_value = ((seed >> 8) & 0x01) | reg_value;
+ write_to_register(REG_LR_WHITSEEDBASEADDR_MSB, reg_value); // only 1 bit.
+ write_to_register(REG_LR_WHITSEEDBASEADDR_LSB, (uint8_t) seed);
+ }
+}
+
+void SX126X_LoRaRadio::set_packet_params(packet_params_t *packet_params)
+{
+ uint8_t n;
+ uint8_t crc_val = 0;
+ uint8_t buf[9] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+ // Check if required configuration corresponds to the stored packet type
+ // If not, silently update radio packet type
+ if (_active_modem != packet_params->modem_type) {
+ set_modem(packet_params->modem_type);
+ }
+
+ switch (packet_params->modem_type) {
+ case MODEM_FSK:
+ if (packet_params->params.gfsk.crc_length == RADIO_CRC_2_BYTES_IBM) {
+ set_crc_seed(CRC_IBM_SEED);
+ set_crc_polynomial(CRC_POLYNOMIAL_IBM);
+ crc_val = RADIO_CRC_2_BYTES;
+ } else if (packet_params->params.gfsk.crc_length == RADIO_CRC_2_BYTES_CCIT) {
+ set_crc_seed(CRC_CCITT_SEED);
+ set_crc_polynomial(CRC_POLYNOMIAL_CCITT);
+ crc_val = RADIO_CRC_2_BYTES_INV;
+ } else {
+ crc_val = packet_params->params.gfsk.crc_length;
+ }
+ n = 9;
+ buf[0] = (packet_params->params.gfsk.preamble_length >> 8) & 0xFF;
+ buf[1] = packet_params->params.gfsk.preamble_length;
+ buf[2] = packet_params->params.gfsk.preamble_min_detect;
+ buf[3] = (packet_params->params.gfsk.syncword_length /*<< 3*/); // convert from byte to bit
+ buf[4] = packet_params->params.gfsk.addr_comp;
+ buf[5] = packet_params->params.gfsk.header_type;
+ buf[6] = packet_params->params.gfsk.payload_length;
+ buf[7] = crc_val;
+ buf[8] = packet_params->params.gfsk.whitening_mode;
+ break;
+
+ case MODEM_LORA:
+ n = 6;
+ buf[0] = (packet_params->params.lora.preamble_length >> 8) & 0xFF;
+ buf[1] = packet_params->params.lora.preamble_length;
+ buf[2] = packet_params->params.lora.header_type;
+ buf[3] = packet_params->params.lora.payload_length;
+ buf[4] = packet_params->params.lora.crc_mode;
+ buf[5] = packet_params->params.lora.invert_IQ;
+ break;
+ default:
+ return;
+ }
+ write_opmode_command(RADIO_SET_PACKETPARAMS, buf, n);
+}
+
+void SX126X_LoRaRadio::set_cad_params(lora_cad_symbols_t nb_symbols,
+ uint8_t det_peak, uint8_t det_min,
+ cad_exit_modes_t exit_mode,
+ uint32_t timeout)
+{
+ uint8_t buf[7];
+
+ buf[0] = (uint8_t) nb_symbols;
+ buf[1] = det_peak;
+ buf[2] = det_min;
+ buf[3] = (uint8_t) exit_mode;
+ buf[4] = (uint8_t) ((timeout >> 16) & 0xFF);
+ buf[5] = (uint8_t) ((timeout >> 8) & 0xFF);
+ buf[6] = (uint8_t) (timeout & 0xFF);
+ write_opmode_command((uint8_t) RADIO_SET_CADPARAMS, buf, 7);
+
+ _operation_mode = MODE_CAD;
+}
+
+void SX126X_LoRaRadio::set_buffer_base_addr(uint8_t tx_base_addr, uint8_t rx_base_addr)
+{
+ uint8_t buf[2];
+
+ buf[0] = tx_base_addr;
+ buf[1] = rx_base_addr;
+ write_opmode_command((uint8_t) RADIO_SET_BUFFERBASEADDRESS, buf, 2);
+}
+
+uint8_t SX126X_LoRaRadio::get_status(void)
+{
+ if (_operation_mode != MODE_STDBY_RC || _operation_mode != MODE_SLEEP) {
+ return 0;
+ }
+
+ return 0xFF;
+}
+
+int8_t SX126X_LoRaRadio::get_rssi()
+{
+ uint8_t buf[1];
+ int8_t rssi = 0;
+
+ read_opmode_command((uint8_t) RADIO_GET_RSSIINST, buf, 1);
+ rssi = -buf[0] >> 1;
+ return rssi;
+}
+
+void SX126X_LoRaRadio::get_rx_buffer_status(uint8_t *payload_len,
+ uint8_t *start_ptr)
+{
+ uint8_t status[2];
+
+ read_opmode_command((uint8_t) RADIO_GET_RXBUFFERSTATUS, status, 2);
+
+ // In case of LORA fixed header, the payloadLength is obtained by reading
+ // the register REG_LR_PAYLOADLENGTH
+ if ((get_modem() == MODEM_LORA) &&
+ (read_register(REG_LR_PACKETPARAMS) >> 7 == 1)) {
+ *payload_len = read_register(REG_LR_PAYLOADLENGTH);
+ } else {
+ *payload_len = status[0];
+ }
+
+ *start_ptr = status[1];
+}
+
+void SX126X_LoRaRadio::get_packet_status(packet_status_t *pkt_status)
+{
+ uint8_t status[3];
+
+ read_opmode_command((uint8_t) RADIO_GET_PACKETSTATUS, status, 3);
+
+ pkt_status->modem_type = (radio_modems_t) get_modem();
+ switch (pkt_status->modem_type) {
+ case MODEM_FSK:
+ pkt_status->params.gfsk.rx_status = status[0];
+ pkt_status->params.gfsk.rssi_sync = -status[1] >> 1;
+ pkt_status->params.gfsk.rssi_avg = -status[2] >> 1;
+ pkt_status->params.gfsk.freq_error = 0;
+ break;
+
+ case MODEM_LORA:
+ pkt_status->params.lora.rssi_pkt = -status[0] >> 1;
+ // Returns SNR value [dB] rounded to the nearest integer value
+ pkt_status->params.lora.snr_pkt = (((int8_t) status[1]) + 2) >> 2;
+ pkt_status->params.lora.signal_rssi_pkt = -status[2] >> 1;
+ break;
+
+ default:
+ // In that specific case, we set everything in the pkt_status to zeros
+ // and reset the packet type accordingly
+ memset(pkt_status, 0, sizeof(packet_status_t));
+ break;
+ }
+}
+
+radio_error_t SX126X_LoRaRadio::get_device_errors(void)
+{
+ radio_error_t error;
+
+ read_opmode_command((uint8_t) RADIO_GET_ERROR, (uint8_t *)&error, 2);
+ return error;
+}
+
+void SX126X_LoRaRadio::clear_device_errors(void)
+{
+ uint8_t buf[2] = {0x00, 0x00};
+ write_opmode_command((uint8_t) RADIO_CLR_ERROR, buf, 2);
+}
+