File content as of revision 3:7fa5603c10dc:

#include "ChannelPlan.h"
#include "plans/ChannelPlan_EU868.h"
#include "MultitechDot.h"

MultitechDot *MultitechDot::get_instance(struct dot_config *config) {
    using namespace lora;

    ChannelPlan *plan = new ChannelPlan_EU868();
    MultitechDot *dot = (MultitechDot *) mDot::getInstance(plan);

    dot->config(config);

    return dot;
}

void MultitechDot::config(struct dot_config *config) {
    _config = config;

    this->setLogLevel(config->log_level);
    this->setDisableDutyCycle(config->disable_duty_cycle);

    logInfo("Start configuring the device");
    if (!this->getStandbyFlag()) {
        logInfo("mbed-os library version: %d", MBED_LIBRARY_VERSION);

        // start from a well-known state
        logInfo("defaulting Dot configuration");
        this->resetConfig();
        this->resetNetworkSession();

        // update configuration if necessary
        if (this->getJoinMode() != this->MANUAL) {
            logInfo("changing network join mode to MANUAL");
            if (this->setJoinMode(this->MANUAL) != this->MDOT_OK) {
                logError("failed to set network join mode to MANUAL");
            }
        }
        // in MANUAL join mode there is no join request/response transaction
        // as long as the Dot is configured correctly and provisioned correctly on the gateway, it should be able to communicate
        // network address - 4 bytes (00000001 - FFFFFFFE)
        // network session key - 16 bytes
        // data session key - 16 bytes
        // to provision your Dot with a Conduit gateway, follow the following steps
        //   * ssh into the Conduit
        //   * provision the Dot using the lora-query application: http://www.multitech.net/developer/software/lora/lora-network-server/
        //      lora-query -a 01020304 A 0102030401020304 <your Dot's device ID> 01020304010203040102030401020304 01020304010203040102030401020304
        //   * if you change the network address, network session key, or data session key, make sure you update them on the gateway
        // to provision your Dot with a 3rd party gateway, see the gateway or network provider documentation
        this->update_manual_config(config);

        // save changes to configuration
        logInfo("saving configuration");
        if (!this->saveConfig()) {
            logError("failed to save configuration");
        }

        // display configuration
        this->display_config();
    } else {
        // restore the saved session if the dot woke from deepsleep mode
        // useful to use with deepsleep because session info is otherwise lost when the dot enters deepsleep
        logInfo("restoring network session from NVM");
        this->restoreNetworkSession();
    }
}

struct dot_config *MultitechDot::get_config() {
    return _config;
}

void MultitechDot::display_config() {
    // display configuration and library version information
    logInfo("=====================");
    logInfo("general configuration");
    logInfo("=====================");
    logInfo("version ------------------ %s", this->getId().c_str());
    logInfo("device ID/EUI ------------ %s", mts::Text::bin2hexString(this->getDeviceId()).c_str());
    logInfo("frequency band ----------- %s", this->FrequencyBandStr(this->getFrequencyBand()).c_str());
    logInfo("frequency sub band ------- %u", this->getFrequencySubBand());
    logInfo("public network ----------- %s", this->getPublicNetwork() ? "on" : "off");
    logInfo("=========================");
    logInfo("credentials configuration");
    logInfo("=========================");
    logInfo("device class ------------- %s", this->getClass().c_str());
    logInfo("network join mode -------- %s", this->JoinModeStr(this->getJoinMode()).c_str());
    if (this->getJoinMode() == this->MANUAL || this->getJoinMode() == this->PEER_TO_PEER) {
        logInfo("network address ---------- %s", mts::Text::bin2hexString(this->getNetworkAddress()).c_str());
        logInfo("network session key------- %s", mts::Text::bin2hexString(this->getNetworkSessionKey()).c_str());
        logInfo("data session key---------- %s", mts::Text::bin2hexString(this->getDataSessionKey()).c_str());
    } else {
        logInfo("network name ------------- %s", this->getNetworkName().c_str());
        logInfo("network phrase ----------- %s", this->getNetworkPassphrase().c_str());
        logInfo("network EUI -------------- %s", mts::Text::bin2hexString(this->getNetworkId()).c_str());
        logInfo("network KEY -------------- %s", mts::Text::bin2hexString(this->getNetworkKey()).c_str());
    }
    logInfo("========================");
    logInfo("communication parameters");
    logInfo("========================");
    if (this->getJoinMode() == this->PEER_TO_PEER) {
        logInfo("TX frequency ------------- %lu", this->getTxFrequency());
    } else {
        logInfo("acks --------------------- %s, %u attempts", this->getAck() > 0 ? "on" : "off", this->getAck());
    }
    logInfo("TX datarate -------------- %s", this->DataRateStr(this->getTxDataRate()).c_str());
    logInfo("TX power ----------------- %lu dBm", this->getTxPower());
    logInfo("Antenna gain ------------- %u dBm", this->getAntennaGain());
}

void MultitechDot::update_ota_config_name_phrase(std::string network_name, std::string network_passphrase,
                                                 uint8_t frequency_sub_band, bool public_network, uint8_t ack) {
    std::string current_network_name = this->getNetworkName();
    std::string current_network_passphrase = this->getNetworkPassphrase();
    uint8_t current_frequency_sub_band = this->getFrequencySubBand();
    bool current_public_network = this->getPublicNetwork();
    uint8_t current_ack = this->getAck();

    if (current_network_name != network_name) {
        logInfo("changing network name from \"%s\" to \"%s\"", current_network_name.c_str(), network_name.c_str());
        if (this->setNetworkName(network_name) != this->MDOT_OK) {
            logError("failed to set network name to \"%s\"", network_name.c_str());
        }
    }

    if (current_network_passphrase != network_passphrase) {
        logInfo("changing network passphrase from \"%s\" to \"%s\"", current_network_passphrase.c_str(),
                network_passphrase.c_str());
        if (this->setNetworkPassphrase(network_passphrase) != this->MDOT_OK) {
            logError("failed to set network passphrase to \"%s\"", network_passphrase.c_str());
        }
    }

    if (current_frequency_sub_band != frequency_sub_band) {
        logInfo("changing frequency sub band from %u to %u", current_frequency_sub_band, frequency_sub_band);
        if (this->setFrequencySubBand(frequency_sub_band) != this->MDOT_OK) {
            logError("failed to set frequency sub band to %u", frequency_sub_band);
        }
    }

    if (current_public_network != public_network) {
        logInfo("changing public network from %s to %s", current_public_network ? "on" : "off",
                public_network ? "on" : "off");
        if (this->setPublicNetwork(public_network) != this->MDOT_OK) {
            logError("failed to set public network to %s", public_network ? "on" : "off");
        }
    }

    if (current_ack != ack) {
        logInfo("changing acks from %u to %u", current_ack, ack);
        if (this->setAck(ack) != this->MDOT_OK) {
            logError("failed to set acks to %u", ack);
        }
    }
}

void MultitechDot::update_ota_config_id_key(uint8_t *network_id, uint8_t *network_key, uint8_t frequency_sub_band,
                                            bool public_network, uint8_t ack) {
    std::vector<uint8_t> current_network_id = this->getNetworkId();
    std::vector<uint8_t> current_network_key = this->getNetworkKey();
    uint8_t current_frequency_sub_band = this->getFrequencySubBand();
    bool current_public_network = this->getPublicNetwork();
    uint8_t current_ack = this->getAck();

    std::vector<uint8_t> network_id_vector(network_id, network_id + 8);
    std::vector<uint8_t> network_key_vector(network_key, network_key + 16);

    if (current_network_id != network_id_vector) {
        logInfo("changing network ID from \"%s\" to \"%s\"", mts::Text::bin2hexString(current_network_id).c_str(),
                mts::Text::bin2hexString(network_id_vector).c_str());
        if (this->setNetworkId(network_id_vector) != this->MDOT_OK) {
            logError("failed to set network ID to \"%s\"", mts::Text::bin2hexString(network_id_vector).c_str());
        }
    }

    if (current_network_key != network_key_vector) {
        logInfo("changing network KEY from \"%s\" to \"%s\"", mts::Text::bin2hexString(current_network_key).c_str(),
                mts::Text::bin2hexString(network_key_vector).c_str());
        if (this->setNetworkKey(network_key_vector) != this->MDOT_OK) {
            logError("failed to set network KEY to \"%s\"", mts::Text::bin2hexString(network_key_vector).c_str());
        }
    }

    if (current_frequency_sub_band != frequency_sub_band) {
        logInfo("changing frequency sub band from %u to %u", current_frequency_sub_band, frequency_sub_band);
        if (this->setFrequencySubBand(frequency_sub_band) != this->MDOT_OK) {
            logError("failed to set frequency sub band to %u", frequency_sub_band);
        }
    }

    if (current_public_network != public_network) {
        logInfo("changing public network from %s to %s", current_public_network ? "on" : "off",
                public_network ? "on" : "off");
        if (this->setPublicNetwork(public_network) != this->MDOT_OK) {
            logError("failed to set public network to %s", public_network ? "on" : "off");
        }
    }

    if (current_ack != ack) {
        logInfo("changing acks from %u to %u", current_ack, ack);
        if (this->setAck(ack) != this->MDOT_OK) {
            logError("failed to set acks to %u", ack);
        }
    }
}

void MultitechDot::update_manual_config(struct dot_config *config) {
    std::vector<uint8_t> current_network_address = this->getNetworkAddress();
    std::vector<uint8_t> current_network_session_key = this->getNetworkSessionKey();
    std::vector<uint8_t> current_data_session_key = this->getDataSessionKey();
    uint8_t current_frequency_sub_band = this->getFrequencySubBand();
    bool current_public_network = this->getPublicNetwork();
    uint8_t current_ack = this->getAck();

    std::vector<uint8_t> network_address_vector(config->network_address, config->network_address + 4);
    std::vector<uint8_t> network_session_key_vector(config->network_session_key, config->network_session_key + 16);
    std::vector<uint8_t> data_session_key_vector(config->data_session_key, config->data_session_key + 16);

    if (current_network_address != network_address_vector) {
        logInfo("changing network address from \"%s\" to \"%s\"",
                mts::Text::bin2hexString(current_network_address).c_str(),
                mts::Text::bin2hexString(network_address_vector).c_str());
        if (this->setNetworkAddress(network_address_vector) != this->MDOT_OK) {
            logError("failed to set network address to \"%s\"",
                     mts::Text::bin2hexString(network_address_vector).c_str());
        }
    }

    if (current_network_session_key != network_session_key_vector) {
        logInfo("changing network session key from \"%s\" to \"%s\"",
                mts::Text::bin2hexString(current_network_session_key).c_str(),
                mts::Text::bin2hexString(network_session_key_vector).c_str());
        if (this->setNetworkSessionKey(network_session_key_vector) != this->MDOT_OK) {
            logError("failed to set network session key to \"%s\"",
                     mts::Text::bin2hexString(network_session_key_vector).c_str());
        }
    }

    if (current_data_session_key != data_session_key_vector) {
        logInfo("changing data session key from \"%s\" to \"%s\"",
                mts::Text::bin2hexString(current_data_session_key).c_str(),
                mts::Text::bin2hexString(data_session_key_vector).c_str());
        if (this->setDataSessionKey(data_session_key_vector) != this->MDOT_OK) {
            logError("failed to set data session key to \"%s\"",
                     mts::Text::bin2hexString(data_session_key_vector).c_str());
        }
    }

    if (current_frequency_sub_band != config->frequency_sub_band) {
        logInfo("changing frequency sub band from %u to %u", current_frequency_sub_band, config->frequency_sub_band);
        if (this->setFrequencySubBand(config->frequency_sub_band) != this->MDOT_OK) {
            logError("failed to set frequency sub band to %u", config->frequency_sub_band);
        }
    }

    if (current_public_network != config->public_network) {
        logInfo("changing public network from %s to %s", current_public_network ? "on" : "off",
                config->public_network ? "on" : "off");
        if (this->setPublicNetwork(config->public_network) != this->MDOT_OK) {
            logError("failed to set public network to %s", config->public_network ? "on" : "off");
        }
    }

    if (current_ack != config->ack) {
        logInfo("changing acks from %u to %u", current_ack, config->ack);
        if (this->setAck(config->ack) != this->MDOT_OK) {
            logError("failed to set acks to %u", config->ack);
        }
    }
}

void MultitechDot::update_peer_to_peer_config(uint8_t *network_address, uint8_t *network_session_key,
                                              uint8_t *data_session_key, uint32_t tx_frequency, uint8_t tx_datarate,
                                              uint8_t tx_power) {
    std::vector<uint8_t> current_network_address = this->getNetworkAddress();
    std::vector<uint8_t> current_network_session_key = this->getNetworkSessionKey();
    std::vector<uint8_t> current_data_session_key = this->getDataSessionKey();
    uint32_t current_tx_frequency = this->getTxFrequency();
    uint8_t current_tx_datarate = this->getTxDataRate();
    uint32_t current_tx_power = this->getTxPower();

    std::vector<uint8_t> network_address_vector(network_address, network_address + 4);
    std::vector<uint8_t> network_session_key_vector(network_session_key, network_session_key + 16);
    std::vector<uint8_t> data_session_key_vector(data_session_key, data_session_key + 16);

    if (current_network_address != network_address_vector) {
        logInfo("changing network address from \"%s\" to \"%s\"",
                mts::Text::bin2hexString(current_network_address).c_str(),
                mts::Text::bin2hexString(network_address_vector).c_str());
        if (this->setNetworkAddress(network_address_vector) != this->MDOT_OK) {
            logError("failed to set network address to \"%s\"",
                     mts::Text::bin2hexString(network_address_vector).c_str());
        }
    }

    if (current_network_session_key != network_session_key_vector) {
        logInfo("changing network session key from \"%s\" to \"%s\"",
                mts::Text::bin2hexString(current_network_session_key).c_str(),
                mts::Text::bin2hexString(network_session_key_vector).c_str());
        if (this->setNetworkSessionKey(network_session_key_vector) != this->MDOT_OK) {
            logError("failed to set network session key to \"%s\"",
                     mts::Text::bin2hexString(network_session_key_vector).c_str());
        }
    }

    if (current_data_session_key != data_session_key_vector) {
        logInfo("changing data session key from \"%s\" to \"%s\"",
                mts::Text::bin2hexString(current_data_session_key).c_str(),
                mts::Text::bin2hexString(data_session_key_vector).c_str());
        if (this->setDataSessionKey(data_session_key_vector) != this->MDOT_OK) {
            logError("failed to set data session key to \"%s\"",
                     mts::Text::bin2hexString(data_session_key_vector).c_str());
        }
    }

    if (current_tx_frequency != tx_frequency) {
        logInfo("changing TX frequency from %lu to %lu", current_tx_frequency, tx_frequency);
        if (this->setTxFrequency(tx_frequency) != this->MDOT_OK) {
            logError("failed to set TX frequency to %lu", tx_frequency);
        }
    }

    if (current_tx_datarate != tx_datarate) {
        logInfo("changing TX datarate from %u to %u", current_tx_datarate, tx_datarate);
        if (this->setTxDataRate(tx_datarate) != this->MDOT_OK) {
            logError("failed to set TX datarate to %u", tx_datarate);
        }
    }

    if (current_tx_power != tx_power) {
        logInfo("changing TX power from %u to %u", current_tx_power, tx_power);
        if (this->setTxPower(tx_power) != this->MDOT_OK) {
            logError("failed to set TX power to %u", tx_power);
        }
    }
}

void MultitechDot::update_network_link_check_config(uint8_t link_check_count, uint8_t link_check_threshold) {
    uint8_t current_link_check_count = this->getLinkCheckCount();
    uint8_t current_link_check_threshold = this->getLinkCheckThreshold();

    if (current_link_check_count != link_check_count) {
        logInfo("changing link check count from %u to %u", current_link_check_count, link_check_count);
        if (this->setLinkCheckCount(link_check_count) != this->MDOT_OK) {
            logError("failed to set link check count to %u", link_check_count);
        }
    }

    if (current_link_check_threshold != link_check_threshold) {
        logInfo("changing link check threshold from %u to %u", current_link_check_threshold, link_check_threshold);
        if (this->setLinkCheckThreshold(link_check_threshold) != this->MDOT_OK) {
            logError("failed to set link check threshold to %u", link_check_threshold);
        }
    }
}

void MultitechDot::join_network() {
    int32_t j_attempts = 0;
    int32_t ret = this->MDOT_ERROR;

    // attempt to join the network
    while (ret != this->MDOT_OK) {
        logInfo("attempt %d to join network", ++j_attempts);
        ret = this->joinNetwork();
        if (ret != this->MDOT_OK) {
            logError("failed to join network %d:%s", ret, this->getReturnCodeString(ret).c_str());
            // in some frequency bands we need to wait until another channel is available before transmitting again
            uint32_t delay_s = (this->getNextTxMs() / 1000) + 1;
            if (delay_s < 2) {
                logInfo("waiting %lu s until next free channel", delay_s);
                wait(delay_s);
            } else {
                logInfo("sleeping %lu s until next free channel", delay_s);
                this->sleep(delay_s, this->RTC_ALARM, false);
            }
        }
    }
}

void MultitechDot::deep_sleep(uint32_t min_delay_s) {
    uint32_t delay_s = this->getNextTxMs() / 1000;

    // save the session so we don't need to join again after waking up
    // not necessary if going into sleep mode since RAM is retained
    logInfo("saving network session to NVM");
    this->saveNetworkSession();

    if (delay_s < min_delay_s) {
        delay_s = min_delay_s;
    }

    logInfo("deepsleeping %lus", delay_s);
    logInfo("application will execute from beginning after waking up");

    // go to deepsleep for delay_s seconds and wake using the RTC alarm
    this->sleep(delay_s, this->RTC_ALARM, true);
}

void MultitechDot::sleep_wake_rtc_only(bool deepsleep) {
    // in some frequency bands we need to wait until another channel is available before transmitting again
    // wait at least 10s between transmissions
    uint32_t delay_s = this->getNextTxMs() / 1000;
    if (delay_s < 10) {
        delay_s = 10;
    }

    logInfo("%s sleeping %lus", deepsleep ? "deep" : "", delay_s);
    logInfo("application will %s after waking up", deepsleep ? "execute from beginning" : "resume");

    // lowest current consumption in sleep mode can only be achieved by configuring IOs as analog inputs with no pull resistors
    // the library handles all internal IOs automatically, but the external IOs are the application's responsibility
    // certain IOs may require internal pullup or pulldown resistors because leaving them floating would cause extra current consumption
    // for xDot: UART_*, I2C_*, SPI_*, GPIO*, WAKE
    // for mDot: XBEE_*, USBTX, USBRX, PB_0, PB_1
    // steps are:
    //   * save IO configuration
    //   * configure IOs to reduce current consumption
    //   * sleep
    //   * restore IO configuration
    if (!deepsleep) {
        // save the GPIO state.
        sleep_save_io();

        // configure GPIOs for lowest current
        sleep_configure_io();
    }

    // go to sleep/deepsleep for delay_s seconds and wake using the RTC alarm
    this->sleep(delay_s, this->RTC_ALARM, deepsleep);

    if (!deepsleep) {
        // restore the GPIO state.
        sleep_restore_io();
    }
}

void MultitechDot::sleep_wake_interrupt_only(bool deepsleep) {
    if (deepsleep) {
        // for xDot, WAKE pin (connected to S2 on xDot-DK) is the only pin that can wake the processor from deepsleep
        // it is automatically configured when INTERRUPT or RTC_ALARM_OR_INTERRUPT is the wakeup source and deepsleep is true in the mDot::sleep call
    } else {
        // configure WAKE pin (connected to S2 on xDot-DK) as the pin that will wake the xDot from low power modes
        // other pins can be configured instead: GPIO0-3 or UART_RX
        this->setWakePin(WAKE);
    }

    logInfo("%s sleeping until interrupt on %s pin", deepsleep ? "deep" : "",
            deepsleep ? "WAKE" : this->pinName2Str(this->getWakePin()).c_str());

    logInfo("application will %s after waking up", deepsleep ? "execute from beginning" : "resume");

    // lowest current consumption in sleep mode can only be achieved by configuring IOs as analog inputs with no pull resistors
    // the library handles all internal IOs automatically, but the external IOs are the application's responsibility
    // certain IOs may require internal pullup or pulldown resistors because leaving them floating would cause extra current consumption
    // for xDot: UART_*, I2C_*, SPI_*, GPIO*, WAKE
    // for mDot: XBEE_*, USBTX, USBRX, PB_0, PB_1
    // steps are:
    //   * save IO configuration
    //   * configure IOs to reduce current consumption
    //   * sleep
    //   * restore IO configuration
    if (!deepsleep) {
        // save the GPIO state.
        this->sleep_save_io();

        // configure GPIOs for lowest current
        this->sleep_configure_io();
    }

    // go to sleep/deepsleep and wake on rising edge of configured wake pin (only the WAKE pin in deepsleep)
    // since we're not waking on the RTC alarm, the interval is ignored
    this->sleep(0, this->INTERRUPT, deepsleep);

    if (!deepsleep) {
        // restore the GPIO state.
        this->sleep_restore_io();
    }
}

void MultitechDot::sleep_wake_rtc_or_interrupt(uint32_t delay_s, bool deepsleep) {
    if (deepsleep) {
        // for xDot, WAKE pin (connected to S2 on xDot-DK) is the only pin that can wake the processor from deepsleep
        // it is automatically configured when INTERRUPT or RTC_ALARM_OR_INTERRUPT is the wakeup source and deepsleep is true in the this->sleep call
    } else {
        // configure WAKE pin (connected to S2 on xDot-DK) as the pin that will wake the xDot from low power modes
        // other pins can be configured instead: GPIO0-3 or UART_RX
        this->setWakePin(WAKE);
    }

    logInfo("%s sleeping %lus or until interrupt on %s pin", deepsleep ? "deep" : "", delay_s,
            deepsleep ? "WAKE" : this->pinName2Str(this->getWakePin()).c_str());

    logInfo("application will %s after waking up", deepsleep ? "execute from beginning" : "resume");

    // lowest current consumption in sleep mode can only be achieved by configuring IOs as analog inputs with no pull resistors
    // the library handles all internal IOs automatically, but the external IOs are the application's responsibility
    // certain IOs may require internal pullup or pulldown resistors because leaving them floating would cause extra current consumption
    // for xDot: UART_*, I2C_*, SPI_*, GPIO*, WAKE
    // for mDot: XBEE_*, USBTX, USBRX, PB_0, PB_1
    // steps are:
    //   * save IO configuration
    //   * configure IOs to reduce current consumption
    //   * sleep
    //   * restore IO configuration
    if (!deepsleep) {
        // save the GPIO state.
        this->sleep_save_io();

        // configure GPIOs for lowest current
        this->sleep_configure_io();
    }

    // go to sleep/deepsleep and wake using the RTC alarm after delay_s seconds or rising edge of configured wake pin (only the WAKE pin in deepsleep)
    // whichever comes first will wake the xDot
    this->sleep(delay_s, this->RTC_ALARM_OR_INTERRUPT, deepsleep);

    if (!deepsleep) {
        // restore the GPIO state.
        this->sleep_restore_io();
        this->sleep_reset_hsi();
    }
}

void MultitechDot::sleep_reset_hsi() {
    // Enable the HSI (to clock the ADC)
    RCC_OscInitTypeDef RCC_OscInitStruct;
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    HAL_RCC_OscConfig(&RCC_OscInitStruct);
}

void MultitechDot::sleep_save_io() {
    logInfo("Save GPIO states");
    xdot_save_gpio_state();
}

void MultitechDot::sleep_configure_io() {
    logInfo("Configure GPIO for lowest current");
    // GPIO Ports Clock Enable
            __GPIOA_CLK_ENABLE();
            __GPIOB_CLK_ENABLE();
            __GPIOC_CLK_ENABLE();
            __GPIOH_CLK_ENABLE();

    GPIO_InitTypeDef GPIO_InitStruct;

    // UART1_TX, UART1_RTS & UART1_CTS to analog nopull - RX could be a wakeup source
    GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_11 | GPIO_PIN_12;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    // I2C_SDA & I2C_SCL to analog nopull
    GPIO_InitStruct.Pin = GPIO_PIN_8 | GPIO_PIN_9;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

    // SPI_MOSI, SPI_MISO, SPI_SCK, & SPI_NSS to analog nopull
    GPIO_InitStruct.Pin = GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

    // iterate through potential wake pins - leave the configured wake pin alone if one is needed
    if (this->getWakePin() != WAKE || this->getWakeMode() == this->RTC_ALARM) {
        GPIO_InitStruct.Pin = GPIO_PIN_0;
        GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
    }
    if (this->getWakePin() != GPIO0 || this->getWakeMode() == this->RTC_ALARM) {
        GPIO_InitStruct.Pin = GPIO_PIN_4;
        GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
    }
    if (this->getWakePin() != GPIO1 || this->getWakeMode() == this->RTC_ALARM) {
        GPIO_InitStruct.Pin = GPIO_PIN_5;
        GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
    }
    if (this->getWakePin() != GPIO2 || this->getWakeMode() == this->RTC_ALARM) {
        GPIO_InitStruct.Pin = GPIO_PIN_0;
        GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
    }
    if (this->getWakePin() != GPIO3 || this->getWakeMode() == this->RTC_ALARM) {
        GPIO_InitStruct.Pin = GPIO_PIN_2;
        GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
    }
    if (this->getWakePin() != UART1_RX || this->getWakeMode() == this->RTC_ALARM) {
        GPIO_InitStruct.Pin = GPIO_PIN_10;
        GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
        GPIO_InitStruct.Pull = GPIO_NOPULL;
        HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
    }
}

void MultitechDot::sleep_restore_io() {
    logInfo("Restore GPIO states");
    xdot_restore_gpio_state();
}

void MultitechDot::send_data(std::vector<uint8_t> data) {
    int32_t ret;

    ret = this->send(data);
    if (ret != this->MDOT_OK) {
        logError("failed to send data to %s [%d][%s]", this->getJoinMode() == this->PEER_TO_PEER ? "peer" : "gateway",
                 ret, this->getReturnCodeString(ret).c_str());
    } else {
        logInfo("successfully sent data to %s", this->getJoinMode() == this->PEER_TO_PEER ? "peer" : "gateway");
    }
}