File content as of revision 31:9c535a708ae9:

#include "config.h"
#include "xdot_flash.h"
#include "dot_util.h"
#include "RadioEvent.h"
#include <math.h>


/////////////////////////////////////////////////////////////////////////////
// -------------------- DOT LIBRARY REQUIRED ------------------------------//
// * Because these example programs can be used for both mDot and xDot     //
//     devices, the LoRa stack is not included. The libmDot library should //
//     be imported if building for mDot devices. The libxDot library       //
//     should be imported if building for xDot devices.                    //
// * https://developer.mbed.org/teams/MultiTech/code/libmDot-dev-mbed5/    //
// * https://developer.mbed.org/teams/MultiTech/code/libmDot-mbed5/        //
// * https://developer.mbed.org/teams/MultiTech/code/libxDot-dev-mbed5/    //
// * https://developer.mbed.org/teams/MultiTech/code/libxDot-mbed5/        //
/////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////
// * these options must match between the two devices in   //
//   order for communication to be successful
/////////////////////////////////////////////////////////////
static uint8_t network_address[] = { 0x01, 0x02, 0x03, 0x04 };
static uint8_t network_session_key[] = { 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04 };
static uint8_t data_session_key[] =    { 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04 };

// wireless bridge protocol
const uint8_t TX_PWR = 20; // 20 dBm
const float RX_SLEEP_TIME = 2000; // ms (one second resolution, min 2 seconds)
const uint8_t TX_TIME = 30; // in ms

//const uint8_t maxPayloadSize = 10; // Number of bytes (used for toa calcultion)

///////////////////////
// I/O Configuration //
///////////////////////
DigitalOut led1(GPIO0);
AnalogIn an1(GPIO1);
AnalogIn an2(GPIO2);

// Inputs
DigitalIn gpio3(GPIO3);
//DigitalIn wake_DOUT(WAKE);
DigitalIn i2cOut1(I2C1_SCL);
DigitalIn i2cOut2(I2C1_SDA);
DigitalIn uartOut1(UART1_CTS);
DigitalIn uartOut2(UART1_RTS);
DigitalIn jtag_gpio1(SWDIO);
DigitalIn jtag_gpio2(SWCLK);

// Outputs
//DigitalOut gpio3(GPIO3);
////DigitalOut wake_DOUT(WAKE);
//DigitalOut i2cOut1(I2C1_SCL);
//DigitalOut i2cOut2(I2C1_SDA);
//
//DigitalOut uartOut1(UART1_CTS);
//DigitalOut uartOut2(UART1_RTS);

mDot* dot = NULL;

Serial pc(USBTX, USBRX);

int main() {
    unsigned int wakeMode;
    RadioEvent events;  // Custom event handler for automatically displaying RX data
    uint32_t tx_frequency;
    uint8_t tx_datarate;
    uint8_t tx_power;
    uint8_t frequency_band;

    pc.baud(115200);

    mts::MTSLog::setLogLevel(mts::MTSLog::TRACE_LEVEL);
    
    dot = mDot::getInstance();

    logInfo("mbed-os library version: %d", MBED_LIBRARY_VERSION);

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

    // make sure library logging is turned on
    dot->setLogLevel(mts::MTSLog::INFO_LEVEL);

    // attach the custom events handler
    dot->setEvents(&events);

    // Setup programmable voltage detector
    // PVD_LEVEL0 Falling 1.85
    // PVD_LEVEL1 Falling 2.04
    // PVD_LEVEL2 Falling 2.24
    // PVD_LEVEL3 Falling 2.44
    // PVD_LEVEL4 Falling 2.64
    // PVD_LEVEL5 Falling 2.84
    // PVD_LEVEL6 Falling 3.05
    PWR_PVDTypeDef pvdConfig;
    pvdConfig.Mode = PWR_PVD_MODE_NORMAL;
    pvdConfig.PVDLevel = PWR_PVDLEVEL_5;

    HAL_PWR_ConfigPVD(&pvdConfig);
    HAL_PWR_EnablePVD();
    logInfo("Programmable Voltage Detector set for level: %d", pvdConfig.PVDLevel);

    // TODO setup IO here

    // update configuration if necessary
    logInfo("Setting up peer to peer configuration");
    if (dot->getJoinMode() != mDot::PEER_TO_PEER) {
        logInfo("changing network join mode to PEER_TO_PEER");
        if (dot->setJoinMode(mDot::PEER_TO_PEER) != mDot::MDOT_OK) {
            logError("failed to set network join mode to PEER_TO_PEER");
        }
    }
    frequency_band = dot->getFrequencyBand();
    switch (frequency_band) {
        case mDot::FB_EU868:
            // 250kHz channels achieve higher throughput
            // DR6 : SF7 @ 250kHz
            // DR0 - DR5 (125kHz channels) available but much slower
            tx_frequency = 869850000;
            tx_datarate = mDot::DR6;
            // the 869850000 frequency is 100% duty cycle if the total power is under 7 dBm - tx power 4 + antenna gain 3 = 7
            tx_power = 4;
            break;
        case mDot::FB_US915:
        case mDot::FB_AU915:
        default:
            // 500kHz channels achieve highest throughput
            // DR8 : SF12 @ 500kHz
            // DR9 : SF11 @ 500kHz
            // DR10 : SF10 @ 500kHz
            // DR11 : SF9 @ 500kHz
            // DR12 : SF8 @ 500kHz
            // DR13 : SF7 @ 500kHz
            // DR0 - DR3 (125kHz channels) available but much slower
            tx_frequency = 915500000;
            tx_datarate = mDot::DR13;
            // 915 bands have no duty cycle restrictions, set tx power to max
            tx_power = 20;
            break;
    }
    // in PEER_TO_PEER mode there is no join request/response transaction
    // as long as both Dots are configured correctly, they should be able to communicate
    update_peer_to_peer_config(network_address, network_session_key, data_session_key, tx_frequency, tx_datarate, tx_power);

    ///////////////////////////////
	// Transmitter Configuration //
	///////////////////////////////
	#if BRIDGE_TX_BRUTE
    wakeMode = mDot::INTERRUPT;
    dot->setTxWait(false);
    dot->setAck(0);  // Disable Ack
	#endif

	#if BRIDGE_TX_ACK
    wakeMode = mDot::INTERRUPT;
    dot->setTxWait(true);
    dot->setAck(1);  // Enable Ack
    dot->setRepeat(1);  // No auto repeats
    dot->setRxDelay(1);
	#endif

	////////////////////////////
	// Receiver Configuration //
	////////////////////////////
	#if BRIDGE_RX_BRUTE
    wakeMode = mDot::RTC_ALARM_OR_INTERRUPT;
    dot->setTxWait(false);
    dot->setAck(0);  // Disable Ack
	#endif

    // Common Configuration
    dot->setWakePin(WAKE); // Use the wake pin as sleep interrupt
    dot->setClass("C"); // Set class C
    dot->setTxPower(TX_PWR);

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

    // display configuration
    display_config();


    unsigned int nTimesToTx = ceil(RX_SLEEP_TIME / ((float)TX_TIME));
    logInfo("RX_SLEEP_TIME %f, timeOnAir %lu, nTimesToTx %lu", RX_SLEEP_TIME, TX_TIME, nTimesToTx);

    uint16_t seqNum=0;
    uint32_t cDwnLink = dot->getDownLinkCounter();

    while (true) {
        std::vector<uint8_t> data;
        led1=0;

        // join network if not joined
        if (!dot->getNetworkJoinStatus()) {
            join_network();
        }

    	//////////////////////
    	// Common main loop //
    	//////////////////////

        // TODO sample rotary
        // TODO sample DIPs

    	//////////////////////////////////////////
    	// Brute Protocol Transmitter main loop //
    	//////////////////////////////////////////
		#if BRIDGE_TX_BRUTE
#if LED_FEEDBACK
        led1=1;
#endif
        // TODO check for CC_IN

        data.push_back((seqNum >> 8) & 0xFF);
        data.push_back(seqNum & 0xFF);
        logInfo("Starting TX.  Time: %lu, seqNum: %lu", us_ticker_read(), seqNum);
        for(uint i=0;i<nTimesToTx;++i) {
        	dot->send(data);
        }
        seqNum++;
        led1=0;
		logInfo("Finished TX.  Time: %lu", us_ticker_read());
        
		sleep_save_io();
		sleep_configure_io();
        dot->sleep(0, wakeMode, false);  // Go to sleep until wake button
        sleep_restore_io();
		#endif

    	///////////////////////////////////////
    	// Brute Protocol Receiver main loop //
    	///////////////////////////////////////
		#if BRIDGE_RX_BRUTE
        logInfo("Waiting for new message current DLC: %d, Time %d", cDwnLink, us_ticker_read());
        wait(TX_TIME/1000.0); // Wait TX_TIME

        // TODO need to figure out what to do when DLC get resets

        if (cDwnLink < dot->getDownLinkCounter()) {
			cDwnLink = dot->getDownLinkCounter();
			dot->recv(data);
			std::string dataStr(data.begin(), data.end());
			logInfo("Got msg num: %d, payload: %s", seqNum, dataStr.c_str());
			// TODO add CC_OUT code here
			seqNum++;
#if LED_FEEDBACK
			led1 = 1;
			wait(0.5);
#endif
        }
		led1=0;
        logInfo("Sleeping.  Time %d", us_ticker_read());
		sleep_save_io();
		sleep_configure_io();
		// TODO maybe add if statement here to prevent double hits by sleeping for a longer time
        dot->sleep(2, wakeMode, false);  // Go to sleep until wake button
        sleep_restore_io();
		#endif

        //////////////
        // I/O Play //
        //////////////

//        // Check Analog
//        logInfo("Read AN1/GPIO1: %f", an1.read());
//        logInfo("Read AN2/GPIO2: %f", an2.read()); // Ranges from 0.0 to 1.0
//
//        // check inputs
//        logInfo("Read GPIO3: %d", gpio3.read());
////        logInfo("Read wake_DOUT: %d", wake_DOUT.read());
//        logInfo("Read i2cOut1: %d", i2cOut1.read()); // Appears to be pulled up
//        logInfo("Read i2cOut2: %d", i2cOut2.read()); // Appears to be pulled up
//        logInfo("Read uartOut1: %d", uartOut1.read());
//        logInfo("Read uartOut2: %d", uartOut2.read());
//
//        logInfo("Read jtag_gpio1: %d", jtag_gpio1.read());
//        logInfo("Read jtag_gpio2: %d", jtag_gpio2.read());
//
//        if (jtag_gpio1.read() == 0) {
//        	led1 = 1;
//        }
//        else {
//        	led1 = 0;
//        }

        // check digital outputs
//		led1 = !led1;
//		gpio3 = !gpio3;
////		wake_DOUT = !wake_DOUT;
//		i2cOut1 = !i2cOut1;
//		i2cOut2 = !i2cOut2;
//
//		uartOut1 = !uartOut1;
//		uartOut2 = !uartOut2;

//        logInfo("================================");
//		wait(1.0);
    }
 
    return 0;
}