const uint32_t APP_ID = 0x1234abcd;
const uint8_t CHANNEL = 13;
const char APP_FOURCHAR[] = "BAT1";

void begin() {
	sleepNow(); // the first time is just sleeping.
}

void wakeup() {
	if (!b_senser_started) {
		// delete/make shorter this message if power requirement is harder.	
		Serial	<< mwx::crlf
				<< "--- PAL_AMB:" << FOURCHARS << " wake up ---"
				<< mwx::crlf
				<< "..start sensor capture again."
				<< mwx::crlf;

		startSensorCapture();
		b_senser_started = true;

		napNow(); // short period sleep.
	} else {
		Serial << "..wake up from short nap.." << mwx::crlf;

		auto&& brd = the_twelite.board.use<PAL_AMB>();

		b_senser_started = false;

		// tell sensors waking up.
		brd.sns_LTR308ALS.process_ev(E_EVENT_START_UP);
		brd.sns_SHTC3.process_ev(E_EVENT_START_UP);
	}
}

void napNow() {
	uint32_t u32ct = 100;
	Serial << "..nap " << int(u32ct) << "ms." << mwx::crlf;
	the_twelite.sleep(u32ct, false, false, TWENET::SLEEP_WAKETIMER_SECONDARY);
}

// Pulse Counter setup
PulseCounter.setup();

void begin() {
	// start the pulse counter capturing
	PulseCounter.begin(
		  100 // 100 count to wakeup
		, PIN_INT_MODE::FALLING // falling edge
		);

	sleepNow();
}

void wakeup() {
	Serial	<< mwx::crlf
			<< "--- Pulse Counter:" << FOURCHARS << " wake up ---"
			<< mwx::crlf;

	if (!PulseCounter.available()) {
		Serial << "..pulse counter does not reach the reference value." << mwx::crlf;
		sleepNow();
	}
}

uint16_t u16ct = PulseCounter.read();

void setup() {
	/*** SETUP section */
	// the twelite main class
	the_twelite
		<< TWENET::appid(APP_ID)    // set application ID (identify network group)
		<< TWENET::channel(CHANNEL) // set channel (pysical channel)
		<< TWENET::rx_when_idle();  // open receive circuit (if not set, it can't listen packts from others)

	// Register Network
	auto&& nwk = the_twelite.network.use<NWK_SIMPLE>();
	
	uid = random(1, 5); // set uid by random() (1..4)
	nwk	<< NWK_SIMPLE::logical_id(uid); // set Logical ID. (0xFE means a child device with no ID)

	/*** BEGIN section */
	SerialParser.begin(PARSER::ASCII, 128); // Initialize the serial parser
	the_twelite.begin(); // start twelite!

	/*** INIT message */
	Serial << "--- WirelessUart (id=" << int(uid) << ") ---" << mwx::crlf;
}

SerialParser.begin(PARSER::ASCII, 128); 

while(Serial.available())  {
	if (SerialParser.parse(Serial.read())) {
		Serial << ".." << SerialParser;
		const uint8_t* b = SerialParser.get_buf().begin();
		uint8_t addr = *b; ++b; // the first byte is destination address.
		transmit(addr, b, SerialParser.get_buf().end());
	}
}

if (the_twelite.receiver.available()) {
	auto&& rx = the_twelite.receiver.read();
	
	// check the packet header.
	const uint8_t* p = rx.get_payload().begin();
	if (rx.get_length() > 4 && !strncmp((const char*)p, (const char*)FOURCHARS, 4)) {
		Serial << format("..rx from %08x/%d", rx.get_addr_src_long(), rx.get_addr_src_lid()) << mwx::crlf;

		smplbuf_u8<128> buf;
		mwx::pack_bytes(buf			
				, uint8_t(rx.get_addr_src_lid())            // src addr (LID)
				, make_pair(p+4, rx.get_payload().end()) );	// data body

		serparser_attach pout;
		pout.begin(PARSER::ASCII, buf.begin(), buf.size(), buf.size());
		Serial << pout;
	}
}

:FE00112233X

:FE001122339C

:03AABBCC00112233X

:03AABBCC0011223366

void setup() {
	/*** SETUP section */
	txreq_stat = MWX_APIRET(false, 0);

	// the twelite main class
	the_twelite
		<< TWENET::appid(APP_ID)    // アプリケーションID
		<< TWENET::channel(CHANNEL) // チャネル
		<< TWENET::rx_when_idle();  // 受信有

	// Register Network
	auto&& nwk = the_twelite.network.use<NWK_SIMPLE>();
	nwk	<< NWK_SIMPLE::logical_id(0xFE); // 子機、特定アドレス指定なし(0xFE)

	/*** BEGIN section */
	Buttons.begin(pack_bits(PIN_BTN), 5, 10); // ボタン処理初期化

	the_twelite.begin(); // start twelite!

	/*** INIT message */
	Serial << "--- Scratch act ---" << mwx::crlf;
}

void begin() {
	Serial << "..begin (run once at boot)" << mwx::crlf;
}

if (Buttons.available()) {
	uint32_t bm, cm;
	Buttons.read(bm, cm);

	if (cm & 0x80000000) {
		// the first capture.
	}

	Serial << int(millis()) << ":BTN" << format("%b") << mwx::crlf;
}

while(Serial.available())  {
  int c = Serial.read();

	Serial << '[' << char(c) << ']';

  switch(c) {
  case 'p': ... // millis() を表示
  case 't': ... // 無線パケットを送信 (vTransmit)
  case 's': ... // スリープする
  }
}

if (the_twelite.receiver.available()) {

		auto&& rx = the_twelite.receiver.read();

		// just dump a packet.
		Serial << format("rx from %08x/%d",
		   rx.get_addr_src_long(), rx.get_addr_src_lid()) << crlf;
}

void wakeup() {
	Serial << int(millis()) << ":wake up!" << mwx::crlf;
}

MWX_APIRET vTransmit() {
	Serial << int(millis()) << ":vTransmit()" << mwx::crlf;

	if (auto&& pkt = the_twelite.network.use<NWK_SIMPLE>().prepare_tx_packet()) {
		// set tx packet behavior
		pkt << tx_addr(0xFF)  // 同報通信＝ブロードキャスト
			<< tx_retry(0x1)    // 再送１回
			<< tx_packet_delay(100,200,20); // 送信時遅延100-200msの間に送信、再送間隔20ms

		// 送信データの指定（アプリケーションごとに決める）
		pack_bytes(pkt.get_payload()
			, make_pair("SCRT", 4) // ４文字識別子
			, uint32_t(millis())   // タイムスタンプ
		);
		
		// 送信要求を行う
		return pkt.transmit(); 
	}

  // .prepare_tx_packet() 時点で失敗している
	return MWX_APIRET(false, 0);
}

// use twelite mwx c++ template library
#include <TWELITE>
#include <NWK_SIMPLE>
#include <MONOSTICK>

void setup() {
	/*** SETUP section */
	auto&& brd = the_twelite.board.use<MONOSTICK>();
	brd.set_led_red(LED_TIMER::ON_RX, 200); // RED (on receiving)
	brd.set_led_yellow(LED_TIMER::BLINK, 500); // YELLOW (blinking)

	// the twelite main class
	the_twelite
		<< TWENET::appid(APP_ID)    // set application ID (identify network group)
		<< TWENET::channel(CHANNEL) // set channel (pysical channel)
		<< TWENET::rx_when_idle();  // open receive circuit (if not set, it can't listen packts from others)

	// Register Network
	auto&& nwksmpl = the_twelite.network.use<NWK_SIMPLE>();
	nwksmpl << NWK_SIMPLE::logical_id(0x00); // set Logical ID. (0x00 means parent device)

	/*** BEGIN section */
	the_twelite.begin(); // start twelite!

	/*** INIT message */
	Serial << "--- MONOSTICK_Parent act ---" << mwx::crlf;
}

auto&& brd = the_twelite.board.use<MONOSTICK>();
brd.set_led_red(LED_TIMER::ON_RX, 200); // RED (on receiving)
brd.set_led_yellow(LED_TIMER::BLINK, 500); // YELLOW (blinking)

auto&& nwksmpl = the_twelite.network.use<NWK_SIMPLE>();
nwksmpl << NWK_SIMPLE::logical_id(0x00);

void loop() {
	// receive RF packet.
    while (the_twelite.receiver.available()) {
		auto&& rx = the_twelite.receiver.read();

		Serial << ".. coming packet (" << int(millis()&0xffff) << ')' << mwx::crlf;

		// output type1 (raw packet)
		//   uint8_t  : 0x01
		//   uint8_t  : src addr (LID)
		//   uint32_t : src addr (long)
		//   uint32_t : dst addr (LID/long)
		//   uint8_t  : repeat count
		//     total 11 bytes of header.
		//     
		//   N        : payload
		{
		  serparser_attach pout;
			pout.begin(PARSER::ASCII, rx.get_psRxDataApp()->auData, 
			    rx.get_psRxDataApp()->u8Len, rx.get_psRxDataApp()->u8Len);

			Serial << "RAW PACKET -> ";
			pout >> Serial;
			Serial << mwx::flush;
		}

		// output type2 
		{
			smplbuf_u8<128> buf;
			mwx::pack_bytes(buf
				, uint8_t(rx.get_addr_src_lid())		// src addr (LID)
				, uint8_t(0xCC)							        // cmd id (0xCC, fixed)
				, uint8_t(rx.get_psRxDataApp()->u8Seq)	// seqence number
				, uint32_t(rx.get_addr_src_long())	// src addr (long)
				, uint32_t(rx.get_addr_dst())			  // dst addr
				, uint8_t(rx.get_lqi())					    // LQI
				, uint16_t(rx.get_length())				  // payload length
				, rx.get_payload() 					      	// payload
			);

			serparser_attach pout;
			pout.begin(PARSER::ASCII, buf.begin(), buf.size(), buf.size());
			
			Serial << "FMT PACKET -> ";
			pout >> Serial;
			Serial << mwx::flush;
		}
	}
}

serparser_attach pout;
pout.begin(PARSER::ASCII, rx.get_psRxDataApp()->auData, 
    rx.get_psRxDataApp()->u8Len, rx.get_psRxDataApp()->u8Len);

Serial << "RAW PACKET -> ";
pout >> Serial;
Serial << mwx::flush;

// 参考：制御部のパケット構造
// uint8_t  : 0x01 固定
// uint8_t  : 送信元のLID
// uint32_t : 送信元のロングアドレス(シリアル番号)
// uint32_t : 宛先アドレス
// uint8_t  : 中継回数

smplbuf_u8<128> buf;
mwx::pack_bytes(buf
	, uint8_t(rx.get_addr_src_lid())		   // 送信元の論理ID
	, uint8_t(0xCC)											   // 0xCC
	, uint8_t(rx.get_psRxDataApp()->u8Seq) // パケットのシーケンス番号
	, uint32_t(rx.get_addr_src_long())		 // 送信元のシリアル番号
	, uint32_t(rx.get_addr_dst())			     // 宛先アドレス
	, uint8_t(rx.get_lqi())					       // LQI:受信品質
	, uint16_t(rx.get_length())				     // 以降のバイト数
	, rx.get_payload() 						         // データペイロード
);

serparser_attach pout;
pout.begin(PARSER::ASCII, buf.begin(), buf.size(), buf.size());

Serial << "FMT PACKET -> ";
pout >> Serial;
Serial << mwx::flush;

#include <TWELITE>
#include <NWK_SIMPLE>

#include "Common.h"

enum class E_STATE {
    INIT = 0,    // INIT STATE
    WORK_JOB,    // do some job (e.g sensor capture)
    TX,          // reuest transmit
    WAIT_TX,     // wait its completion
    EXIT_NORMAL, // normal exiting.
    EXIT_FATAL   // has a fatal error (will do system reset)
};

void setup() {
	/*** SETUP section */
	txreq_stat = MWX_APIRET(false, 0);

	// the twelite main class
	the_twelite
		<< TWENET::appid(APP_ID)    // set application ID (identify network group)
		<< TWENET::channel(CHANNEL) // set channel (pysical channel)
		<< TWENET::rx_when_idle(false);  // open receive circuit (if not set, it can't listen packts from others)

	// Register Network
	auto&& nwk = the_twelite.network.use<NWK_SIMPLE>();
	nwk	<< NWK_SIMPLE::logical_id(DEVICE_ID); // set Logical ID. 

	/*** BEGIN section */
	the_twelite.begin(); // start twelite!

	/*** INIT message */
	Serial << "--- Sleep an Tx Act ---" << crlf;
}

void begin() {
	Serial << "..begin (run once at boot)" << crlf;
	SleepNow();
}

void wakeup() {
	Serial << crlf << int(millis()) << ":wake up!" << crlf;
	eState = E_STATE::INIT;
}

void loop() {
	bool loop_more; // if set, one more loop on state machine.
	do {
		loop_more = false; // set no-loop at the initial.
		switch(eState) {
			case E_STATE::INIT: 
				eState = E_STATE::WORK_JOB; loop_more = true;
				break;
			case E_STATE::WORK_JOB:
			  if (TickTimer.available())
			    if(--dummy_work_count == 0)
						eState = E_STATE::TX: loop_more = true;
				break;
			case E_STATE::TX:
			  txreq_stat = vTransmit();
				if(txreq_stat) {
				  u32millis_tx = millis();
				  eState = E_STATE::WAIT_TX;
				} else {
				  eState = E_STATE::EXIT_FATAL; loop_more = true;
				}
			  break;
			case E_STATE::WAIT_TX:
			  if (the_twelite.tx_status.is_complete(txreq_stat.get_value())) {
			    eState = E_STATE::EXIT_NORMAL; loop_more = true;
			  } else if (millis() - u32millis_tx > 100) {
			    eState = E_STATE::EXIT_FATAL; loop_more = true;
			  }
			  break;
			case E_STATE::EXIT_NORMAL:
				SleepNow();
				break;
			case E_STATE::EXIT_FATAL:
				the_twelite.reset_system();
				break;
		}
	} while (loop_more);

void SleepNow() {
	uint16_t u16dur = SLEEP_DUR;
	u16dur = random(SLEEP_DUR - SLEEP_DUR_TERMOR, SLEEP_DUR + SLEEP_DUR_TERMOR);

	Serial << int(millis()) << ":sleeping for " << int(u16dur) << "ms" << crlf << mwx::flush;
	the_twelite.sleep(u16dur, false);
}

MWX_APIRET vTransmit() {
	Serial << int(millis()) << ":vTransmit()" << crlf;

	if (auto&& pkt = the_twelite.network.use<NWK_SIMPLE>().prepare_tx_packet()) {
		// set tx packet behavior
		pkt << tx_addr(0x00)  // 0..0xFF (LID 0:parent, FE:child w/ no id, FF:LID broad cast), 0x8XXXXXXX (long address)
			<< tx_retry(0x1) // set retry (0x3 send four times in total)
			<< tx_packet_delay(0,0,2); // send packet w/ delay (send first packet with randomized delay from 0 to 0ms, repeat every 2ms)

		// prepare packet payload
		pack_bytes(pkt.get_payload() // set payload data objects.
			, make_pair(FOURCC, 4) // string should be paired with length explicitly.
			, uint32_t(millis()) // put timestamp here.
		);
		
		// do transmit 
		//return nwksmpl.transmit(pkt);
		return pkt.transmit(); 
	}

	return MWX_APIRET(false, 0);
}

#include <TWELITE>
#include <NWK_SIMPLE>
#include <PAL_AMB> // include the board support of PAL_AMB

void setup() {
	/*** SETUP section */
	// use PAL_AMB board support.
	auto&& brd = the_twelite.board.use<PAL_AMB>();
	// now it can read DIP sw status.
	u8ID = (brd.get_DIPSW_BM() & 0x07) + 1;
	if (u8ID == 0) u8ID = 0xFE; // 0 is to 0xFE

	// LED setup (use periph_led_timer, which will re-start on wakeup() automatically)
	brd.set_led(LED_TIMER::BLINK, 10); // blink (on 10ms/ off 10ms)

	// the twelite main object.
	the_twelite
		<< TWENET::appid(APP_ID)     // set application ID (identify network group)
		<< TWENET::channel(CHANNEL); // set channel (pysical channel)

	// Register Network
	auto&& nwk = the_twelite.network.use<NWK_SIMPLE>();
	nwk << NWK_SIMPLE::logical_id(u8ID); // set Logical ID. (0xFE means a child device with no ID)

	/*** BEGIN section */
	Wire.begin(); // start two wire serial bus.
	Analogue.begin(pack_bits(PIN_ANALOGUE::A1, PIN_ANALOGUE::VCC)); // _start continuous adc capture.

	the_twelite.begin(); // start twelite!

	startSensorCapture(); // start sensor capture!

	/*** INIT message */
	Serial << "--- PAL_AMB:" << FOURCHARS << " ---" << mwx::crlf;
}

auto&& brd = the_twelite.board.use<PAL_AMB>();

u8ID = (brd.get_DIPSW_BM() & 0x07) + 1;
if (u8ID == 0) u8ID = 0xFE; // 0 is to 0xFE

	brd.set_led(LED_TIMER::BLINK, 10); // blink (on 10ms/ off 10ms)

	the_twelite
		<< TWENET::appid(APP_ID)     // set application ID (identify network group)
		<< TWENET::channel(CHANNEL); // set channel (pysical channel)

Wire.begin(); // start two wire serial bus.

startSensorCapture();

void loop() {
	auto&& brd = the_twelite.board.use<PAL_AMB>();

	// mostly process every ms.
	if (TickTimer.available()) {
		
		//  wait until sensor capture finish
		if (!brd.sns_LTR308ALS.available()) {
			// this will take around 50ms.
			// note: to save battery life, perform sleeping to wait finish of sensor capture.
			brd.sns_LTR308ALS.process_ev(E_EVENT_TICK_TIMER);
		}

		if (!brd.sns_SHTC3.available()) {
			brd.sns_SHTC3.process_ev(E_EVENT_TICK_TIMER);
		}

		// now sensor data is ready.
		if (brd.sns_LTR308ALS.available() && brd.sns_SHTC3.available() && !b_transmit) {
			Serial << "..finish sensor capture." << mwx::crlf
				<< "  LTR308ALS: lumi=" << int(brd.sns_LTR308ALS.get_luminance()) << mwx::crlf
				<< "  SHTC3    : temp=" << brd.sns_SHTC3.get_temp() << 'C' << mwx::crlf
				<< "             humd=" << brd.sns_SHTC3.get_humid() << '%' << mwx::crlf
				<< mwx::flush;

			 // get new packet instance.
			if (auto&& pkt = the_twelite.network.use<NWK_SIMPLE>().prepare_tx_packet()) {
				// set tx packet behavior
				pkt << tx_addr(0x00)  // 0..0xFF (LID 0:parent, FE:child w/ no id, FF:LID broad cast), 0x8XXXXXXX (long address)
					<< tx_retry(0x1) // set retry (0x1 send two times in total)
					<< tx_packet_delay(0, 0, 2); // send packet w/ delay

				// prepare packet payload
				pack_bytes(pkt.get_payload() // set payload data objects.
					, make_pair(FOURCHARS, 4)  // just to see packet identification, you can design in any.
					, uint32_t(brd.sns_LTR308ALS.get_luminance()) // luminance
					, uint16_t(brd.sns_SHTC3.get_temp())
					, uint16_t(brd.sns_SHTC3.get_humid())
				);

				// do transmit
				MWX_APIRET ret = pkt.transmit();
				Serial << "..transmit request by id = " << int(ret.get_value()) << '.' << mwx::crlf << mwx::flush;

				if (ret) {
					u8txid = ret.get_value() & 0xFF;
					b_transmit = true;
				}
				else {
					// fail to request
					sleepNow();
				}
			}
		}
	}

	// wait to complete transmission.
	if (b_transmit) {
		if (the_twelite.tx_status.is_complete(u8txid)) {		
			Serial << "..transmit complete." << mwx::crlf << mwx::flush;

			// now sleeping
			sleepNow();
		}
	}
}

	if (TickTimer.available()) {

		if (!brd.sns_LTR308ALS.available()) {
			brd.sns_LTR308ALS.process_ev(E_EVENT_TICK_TIMER);
		}

		if (!brd.sns_SHTC3.available()) {
			brd.sns_SHTC3.process_ev(E_EVENT_TICK_TIMER);
		}

		if (brd.sns_LTR308ALS.available() 
						&& brd.sns_SHTC3.available() && !b_transmit) {

	pkt << tx_addr(0x00)  // 親機0x00宛
		<< tx_retry(0x1)    // リトライ1回
		<< tx_packet_delay(0, 0, 2); // 遅延は最小限

	// prepare packet payload
	pack_bytes(pkt.get_payload() 
		, make_pair(FOURCHARS, 4)  
		, uint32_t(brd.sns_LTR308ALS.get_luminance()) // luminance
		, uint16_t(brd.sns_SHTC3.get_temp_cent())
		, uint16_t(brd.sns_SHTC3.get_humid_per_dmil())
	);

	// do transmit
	MWX_APIRET ret = pkt.transmit();

	if (ret) {
		u8txid = ret.get_value() & 0xFF;
		b_transmit = true;
	}
	else {
		// fail to request
		sleepNow();
	}

// wait to complete transmission.
if (b_transmit) {
    if (the_twelite.tx_status.is_complete(u8txid)) {        
        Serial << "..transmit complete." << mwx::crlf << mwx::flush;

        // now sleeping
        sleepNow();
    }
}

void startSensorCapture() {
	auto&& brd = the_twelite.board.use<PAL_AMB>();

	// start sensor capture
	brd.sns_SHTC3.begin();
	brd.sns_LTR308ALS.begin();
	b_transmit = false;
}

void sleepNow() {
	uint32_t u32ct = 1750 + random(0,500);
	Serial << "..sleeping " << int(u32ct) << "ms." << mwx::crlf << mwx::flush;

	the_twelite.sleep(u32ct);
}

void wakeup() {
	Serial	<< mwx::crlf
			<< "--- PAL_AMB:" << FOURCHARS << " wake up ---"
			<< mwx::crlf
			<< "..start sensor capture again."
			<< mwx::crlf;
	startSensorCapture();
}

uint32_t t_start;

  // 時間待ちの処理を開始した時点でタイムスタンプを保存
  t_start = millis();

...

  // loop() でタイムアウトのチェック
  if (millis() - t_start > 100) {
    sleepNow();
  }

#include <TWELITE>
#include <NWK_SIMPLE>
#include <PAL_>

void setup() {
	/*** SETUP section */
	// use PAL_AMB board support.
	auto&& brd = the_twelite.board.use<PAL_MAG>();
	// now it can read DIP sw status.
	u8ID = (brd.get_DIPSW_BM() & 0x07) + 1;
	if (u8ID == 0) u8ID = 0xFE; // 0 is to 0xFE

	// LED setup (use periph_led_timer, which will re-start on wakeup() automatically)
	brd.set_led(LED_TIMER::BLINK, 10); // blink (on 10ms/ off 10ms)

	// the twelite main object.
	the_twelite
		<< TWENET::appid(APP_ID)     // set application ID (identify network group)
		<< TWENET::channel(CHANNEL); // set channel (pysical channel)

	// Register Network
	auto&& nwk = the_twelite.network.use<NWK_SIMPLE>();
	nwk << NWK_SIMPLE::logical_id(u8ID); // set Logical ID. (0xFE means a child device with no ID)

	/*** BEGIN section */
	the_twelite.begin(); // start twelite!

	/*** INIT message */
	Serial << "--- PAL_MAG:" << FOURCHARS << " ---" << mwx::crlf;
}

auto&& brd = the_twelite.board.use<PAL_MAG>();

u8ID = (brd.get_DIPSW_BM() & 0x07) + 1;
if (u8ID == 0) u8ID = 0xFE; // 0 is to 0xFE

	brd.set_led(LED_TIMER::BLINK, 10); // blink (on 10ms/ off 10ms)

void begin() {
	sleepNow(); // the first time is just sleeping.
}

void sleepNow() {
	uint32_t u32ct = 60000;
	
	pinMode(PAL_MAG::PIN_SNS_OUT1, PIN_MODE::WAKE_FALLING);
	pinMode(PAL_MAG::PIN_SNS_OUT2, PIN_MODE::WAKE_FALLING);

	the_twelite.sleep(u32ct);
}

void wakeup() {
	if (the_twelite.is_wokeup_by_wktimer()) {
		sleepNow();
	}
}

void loop() {
	if (!b_transmit) {
		if (auto&& pkt = 
      the_twelite.network.use<NWK_SIMPLE>().prepare_tx_packet())

			uint8_t b_north = 
			  the_twelite.is_wokeup_by_dio(PAL_MAG::PIN_SNS_NORTH);
			uint8_t b_south = 
			  the_twelite.is_wokeup_by_dio(PAL_MAG::PIN_SNS_SOUTH);
	
			Serial << "..sensor north=" << int(b_north) 
			       << " south=" << int(b_south) << mwx::crlf;
	
			// set tx packet behavior
			pkt << tx_addr(0x00)
				<< tx_retry(0x1)
				<< tx_packet_delay(0, 0, 2);
	
			// prepare packet payload
			pack_bytes(pkt.get_payload()
				, make_pair(FOURCHARS, 4) 
				, b_north
				, b_south
			);
	
			// do transmit
			MWX_APIRET ret = pkt.transmit();
	
			if (ret) {
				u8txid = ret.get_value() & 0xFF;
				b_transmit = true;
			}
			else {
				// fail to request
				sleepNow();
			}
		} else {
		  sleepNow();
		}
	} else { 
		if (the_twelite.tx_status.is_complete(u8txid)) {		
			b_transmit = 0;
			sleepNow();
		}
	}
}

	if (!b_transmit) {

uint8_t b_north = 
  the_twelite.is_wokeup_by_dio(PAL_MAG::PIN_SNS_NORTH);
uint8_t b_south = 
  the_twelite.is_wokeup_by_dio(PAL_MAG::PIN_SNS_SOUTH);

// do transmit
MWX_APIRET ret = pkt.transmit();

if (the_twelite.tx_status.is_complete(u8txid)) {		
	b_transmit = 0;
	sleepNow();
}

// use twelite mwx c++ template library
#include <TWELITE>
#include <NWK_SIMPLE>
#include <BRD_APPTWELITE>

/*** Config part */
// application ID
const uint32_t APP_ID = 0x1234abcd;

// channel
const uint8_t CHANNEL = 13;

/*** function prototype */
MWX_APIRET transmit();
void receive();

/*** application defs */
const char APP_FOURCHAR[] = "BAT1";
uint8_t u8devid = 0;

uint16_t au16AI[5];
uint8_t u8DI_BM;

void setup() {
	// 変数の初期化
	for(auto&& x : au16AI) x = 0xFFFF;
	u8DI_BM = 0xFF;

	/*** SETUP section */
	// App_Twelite仕様のボード定義をシステムに登録します。
	auto&& brd = the_twelite.board.use<BRD_APPTWELITE>();

	// check DIP sw settings
	u8devid = (brd.get_M1()) ? 0x00 : 0xFE;

	// setup analogue
	Analogue.setup(true, ANALOGUE::KICK_BY_TIMER0); // setup analogue read (check every 16ms)

	// setup buttons
	Buttons.setup(5); // init button manager with 5 history table.

	// the twelite main class
	the_twelite
		<< TWENET::appid(APP_ID)    // set application ID (identify network group)
		<< TWENET::channel(CHANNEL) // set channel (pysical channel)
		<< TWENET::rx_when_idle();  // open receive circuit (if not set, it can't listen packts from others)

	// Register Network
	auto&& nwksmpl = the_twelite.network.use<NWK_SIMPLE>();
	nwksmpl << NWK_SIMPLE::logical_id(u8devid); // set Logical ID. (0x00 means parent device)

	/*** BEGIN section */
	// start ADC capture
	Analogue.begin(pack_bits(
						BRD_APPTWELITE::PIN_AI1,
						BRD_APPTWELITE::PIN_AI2,
						BRD_APPTWELITE::PIN_AI3,
						BRD_APPTWELITE::PIN_AI4,
				   	PIN_ANALOGUE::VCC)); // _start continuous adc capture.

	// Timer setup
	Timer0.begin(32, true); // 32hz timer

	// start button check
	Buttons.begin(pack_bits(
						BRD_APPTWELITE::PIN_DI1,
						BRD_APPTWELITE::PIN_DI2,
						BRD_APPTWELITE::PIN_DI3,
						BRD_APPTWELITE::PIN_DI4),
					5, 		// history count
					4);  	// tick delta (change is detected by 5*4=20ms consequtive same values)	


	the_twelite.begin(); // start twelite!

	/*** INIT message */
	Serial << "--- BRD_APPTWELITE(" << int(u8devid) << ") ---" << mwx::crlf;
}

auto&& brd = the_twelite.board.use<BRD_APPTWELITE>();

u8devid = (brd.get_M1()) ? 0x00 : 0xFE;

	// the twelite main class
	the_twelite
		<< TWENET::appid(APP_ID)    // set application ID (identify network group)
		<< TWENET::channel(CHANNEL) // set channel (pysical channel)
		<< TWENET::rx_when_idle();  // open receive circuit (if not set, it can't listen packts from others)

auto&& nwksmpl = the_twelite.network.use<NWK_SIMPLE>();
nwksmpl << NWK_SIMPLE::logical_id(u8devid);

the_twelite.begin(); // start twelite!

Analogue.setup(true, ANALOGUE::KICK_BY_TIMER0);

	Analogue.begin(pack_bits(
						BRD_APPTWELITE::PIN_AI1,
						BRD_APPTWELITE::PIN_AI2,
						BRD_APPTWELITE::PIN_AI3,
						BRD_APPTWELITE::PIN_AI4,
				   	PIN_ANALOGUE::VCC));

Buttons.setup(5);

Buttons.begin(pack_bits(
						BRD_APPTWELITE::PIN_DI1,
						BRD_APPTWELITE::PIN_DI2,
						BRD_APPTWELITE::PIN_DI3,
						BRD_APPTWELITE::PIN_DI4),
					5, 		// history count
					4);  	// tick delta

Timer0.begin(32, true); // 32hz timer

Serial << "--- BRD_APPTWELITE("
       << int(u8devid) 
       << ") ---" << mwx::crlf;

/*** loop procedure (called every event) */
void loop() {
	if (Buttons.available()) {
		uint32_t bp, bc;
		Buttons.read(bp, bc);

		u8DI_BM = uint8_t(collect_bits(bp, 
							BRD_APPTWELITE::PIN_DI4,   // bit3
							BRD_APPTWELITE::PIN_DI3,   // bit2
							BRD_APPTWELITE::PIN_DI2,   // bit1
							BRD_APPTWELITE::PIN_DI1)); // bit0

		transmit();
	}

	if (Analogue.available()) {
		au16AI[0] = Analogue.read(PIN_ANALOGUE::VCC);
		au16AI[1] = Analogue.read_raw(BRD_APPTWELITE::PIN_AI1);
		au16AI[2] = Analogue.read_raw(BRD_APPTWELITE::PIN_AI2);
		au16AI[3] = Analogue.read_raw(BRD_APPTWELITE::PIN_AI3);
		au16AI[4] = Analogue.read_raw(BRD_APPTWELITE::PIN_AI4);
	}

	if (Timer0.available()) {
		static uint8_t u16ct;
		u16ct++;

		if (u8DI_BM != 0xFF && au16AI[0] != 0xFFFF) { // finished the first capture
			if ((u16ct % 32) == 0) { // every 32ticks of Timer0
				transmit();
			}
		}
	}

	// receive RF packet.
  if (the_twelite.receiver.available()) {
		receive();
	}
}

	if (Buttons.available()) {
		uint32_t bp, bc;
		Buttons.read(bp, bc);

u8DI_BM = uint8_t(collect_bits(bp, 
		BRD_APPTWELITE::PIN_DI4,   // bit3
		BRD_APPTWELITE::PIN_DI3,   // bit2
		BRD_APPTWELITE::PIN_DI2,   // bit1
		BRD_APPTWELITE::PIN_DI1)); // bit0

/* collect_bits は以下の処理を行います。
u8DI_BM = 0;
if (bp & (1UL << BRD_APPTWELITE::PIN_DI1)) u8DI_BM |= 1;
if (bp & (1UL << BRD_APPTWELITE::PIN_DI2)) u8DI_BM |= 2;
if (bp & (1UL << BRD_APPTWELITE::PIN_DI3)) u8DI_BM |= 4;
if (bp & (1UL << BRD_APPTWELITE::PIN_DI4)) u8DI_BM |= 8;
*/

transmit();

if (Analogue.available()) {
	au16AI[0] = Analogue.read(PIN_ANALOGUE::VCC);
	au16AI[1] = Analogue.read_raw(BRD_APPTWELITE::PIN_AI1);
	au16AI[2] = Analogue.read_raw(BRD_APPTWELITE::PIN_AI2);
	au16AI[3] = Analogue.read_raw(BRD_APPTWELITE::PIN_AI3);
	au16AI[4] = Analogue.read_raw(BRD_APPTWELITE::PIN_AI4);
}

if (Timer0.available()) {
	static uint8_t u16ct;
	u16ct++;

	if (u8DI_BM != 0xFF && au16AI[0] != 0xFFFF) { // finished the first capture
		if ((u16ct % 32) == 0) { // every 32ticks of Timer0
			transmit();
		}
	}
}

if (the_twelite.receiver.available()) {
	receive();
}

MWX_APIRET transmit() {
	if (auto&& pkt = the_twelite.network.use<NWK_SIMPLE>().prepare_tx_packet()) {
		Serial << "..DI=" << format("%04b ", u8DI_BM);
		Serial << format("ADC=%04d/%04d/%04d/%04d ", au16AI[1], au16AI[2], au16AI[3], au16AI[4]);
		Serial << "Vcc=" << format("%04d ", au16AI[0]);
		Serial << " --> transmit" << mwx::crlf;

		// set tx packet behavior
		pkt << tx_addr(u8devid == 0 ? 0xFE : 0x00)  // 0..0xFF (LID 0:parent, FE:child w/ no id, FF:LID broad cast), 0x8XXXXXXX (long address)
			<< tx_retry(0x1) // set retry (0x1 send two times in total)
			<< tx_packet_delay(0,50,10); // send packet w/ delay (send first packet with randomized delay from 100 to 200ms, repeat every 20ms)

		// prepare packet payload
		pack_bytes(pkt.get_payload() // set payload data objects.
			, make_pair(APP_FOURCHAR, 4) // string should be paired with length explicitly.
			, uint8_t(u8DI_BM)
		);

		for (auto&& x : au16AI) {
			pack_bytes(pkt.get_payload(), uint16_t(x)); // adc values
		}
		
		// do transmit 
		return pkt.transmit();
	}
	return MWX_APIRET(false, 0);
}

MWX_APIRET transmit()

	if (auto&& pkt = the_twelite.network.use<NWK_SIMPLE>().prepare_tx_packet()) {

pkt << tx_addr(u8devid == 0 ? 0xFE : 0x00)  // 0..0xFF (LID 0:parent, FE:child w/ no id, FF:LID broad cast), 0x8XXXXXXX (long address)
		<< tx_retry(0x1) // set retry (0x3 send four times in total)
		<< tx_packet_delay(0,50,10); // send packet w/ delay (send first packet with randomized delay from 100 to 200ms, repeat every 20ms)

# 先頭バイトのインデックス: データ型 : バイト数 : 内容

00: uint8_t[4] : 4 : ４文字識別子
04: uint8_t    : 1 : DI1..4のビットマップ
06: uint16_t   : 2 : Vccの電圧値
08: uint16_t   : 2 : AI1のADC値 (0..1023)
10: uint16_t   : 2 : AI2のADC値 (0..1023)
12: uint16_t   : 2 : AI3のADC値 (0..1023)
14: uint16_t   : 2 : AI4のADC値 (0..1023)

auto&& payl = pkt.get_payload();
payl.reserve(16); // １６バイトにリサイズ
payl[00] = APP_FOURCHAR[0];
payl[01] = APP_FOURCHAR[1];
...
payl[08] = (au16AI[0] & 0xFF00) >> 8; //Vcc
payl[09] = (au16AI[0] & 0xFF);
...
payl[14] = (au16AI[4] & 0xFF00) >> 8; // AI4
payl[15] = (au16AI[4] & 0xFF);

// prepare packet payload
pack_bytes(pkt.get_payload() // set payload data objects.
	, make_pair(APP_FOURCHAR, 4) // string should be paired with length explicitly.
	, uint8_t(u8DI_BM)
);

for (auto&& x : au16AI) {
	pack_bytes(pkt.get_payload(), uint16_t(x)); // adc values
}

return pkt.transmit();

void receive() {	
	auto&& rx = the_twelite.receiver.read();

  // expand the packet payload
	char fourchars[5]{};
	auto&& np = expand_bytes(rx.get_payload().begin(), rx.get_payload().end()
		, make_pair((uint8_t*)fourchars, 4)  // 4bytes of msg
    );

	// check header
	if (strncmp(APP_FOURCHAR, fourchars, 4)) { return; }

	// read rest of payload
	uint8_t u8DI_BM_remote = 0xff;
	uint16_t au16AI_remote[5];
	expand_bytes(np, rx.get_payload().end()
		, u8DI_BM_remote
		, au16AI_remote[0]
		, au16AI_remote[1]
		, au16AI_remote[2]
		, au16AI_remote[3]
		, au16AI_remote[4]
	);

	Serial << format("DI:%04b", u8DI_BM_remote & 0x0F);
	for (auto&& x : au16AI_remote) {
		Serial << format("/%04d", x);
	}
	Serial << mwx::crlf;

	// set local DO
	digitalWrite(BRD_APPTWELITE::PIN_DO1, (u8DI_BM_remote & 1) ? HIGH : LOW);
	digitalWrite(BRD_APPTWELITE::PIN_DO2, (u8DI_BM_remote & 2) ? HIGH : LOW);
	digitalWrite(BRD_APPTWELITE::PIN_DO3, (u8DI_BM_remote & 4) ? HIGH : LOW);
	digitalWrite(BRD_APPTWELITE::PIN_DO4, (u8DI_BM_remote & 8) ? HIGH : LOW);

	// set local PWM : duty is set 0..1024, so 1023 is set 1024.
	Timer1.change_duty(au16AI_remote[1] == 1023 ? 1024 : au16AI_remote[1]);
	Timer2.change_duty(au16AI_remote[2] == 1023 ? 1024 : au16AI_remote[2]);
	Timer3.change_duty(au16AI_remote[3] == 1023 ? 1024 : au16AI_remote[3]);
	Timer4.change_duty(au16AI_remote[4] == 1023 ? 1024 : au16AI_remote[4]);
}

auto&& rx = the_twelite.receiver.read();

Serial << format("..receive(%08x/%d) : ",
   rx.get_addr_src_long(), rx.get_addr_src_lid());

char fourchars[5]{};
auto&& np = expand_bytes(rx.get_payload().begin(), rx.get_payload().end()
	, make_pair((uint8_t*)fourchars, 4)  // 4bytes of msg
  );

if (strncmp(APP_FOURCHAR, fourchars, 4)) { return; }

	// read rest of payload
	uint8_t u8DI_BM_remote = 0xff;
	uint16_t au16AI_remote[5];
	expand_bytes(np, rx.get_payload().end()
		, u8DI_BM_remote
		, au16AI_remote[0]
		, au16AI_remote[1]
		, au16AI_remote[2]
		, au16AI_remote[3]
		, au16AI_remote[4]
	);

Serial << format("DI:%04b", u8DI_BM_remote & 0x0F);
for (auto&& x : au16AI_remote) {
	Serial << format("/%04d", x);
}
Serial << mwx::crlf;

// set local DO
digitalWrite(BRD_APPTWELITE::PIN_DO1, (u8DI_BM_remote & 1) ? HIGH : LOW);
digitalWrite(BRD_APPTWELITE::PIN_DO2, (u8DI_BM_remote & 2) ? HIGH : LOW);
digitalWrite(BRD_APPTWELITE::PIN_DO3, (u8DI_BM_remote & 4) ? HIGH : LOW);
digitalWrite(BRD_APPTWELITE::PIN_DO4, (u8DI_BM_remote & 8) ? HIGH : LOW);

// set local PWM : duty is set 0..1024, so 1023 is set 1024.
Timer1.change_duty(au16AI_remote[1] == 1023 ? 1024 : au16AI_remote[1]);
Timer2.change_duty(au16AI_remote[2] == 1023 ? 1024 : au16AI_remote[2]);
Timer3.change_duty(au16AI_remote[3] == 1023 ? 1024 : au16AI_remote[3]);
Timer4.change_duty(au16AI_remote[4] == 1023 ? 1024 : au16AI_remote[4]);

enum class E_STATE {
	INIT = 0,
	START_CAPTURE,
	WAIT_CAPTURE,
	REQUEST_TX,
	WAIT_TX,
	EXIT_NORMAL,
	EXIT_FATAL
} eState;

void begin() { 
	// sleep immediately, waiting for the first capture.
	sleepNow();
}

void wakeup() {
	Serial << crlf << "--- PAL_MOT(OneShot):" 
	       << FOURCHARS << " wake up ---" << crlf;
	eState = E_STATE::INIT;
}

void loop() {
	auto&& brd = the_twelite.board.use<PAL_MOT>();
	bool loop_more;
	do {
	  loop_more = false;
	  switch(eState) {
 	    ...
	  }
	} while(loop_more);

			case E_STATE::INIT:
				brd.sns_MC3630.get_que().clear(); // clear queue in advance (just in case).
				loop_more = true;
				eState = E_STATE::START_CAPTURE;
			break;

			case E_STATE::START_CAPTURE:
				u32tick_capture = millis();
				brd.sns_MC3630.begin(
					// 400Hz, +/-4G range, get four samples (can be one sample)
					SnsMC3630::Settings(
						SnsMC3630::MODE_LP_400HZ, SnsMC3630::RANGE_PLUS_MINUS_4G, 4)); 
				eState = E_STATE::WAIT_CAPTURE;
			break;

			case E_STATE::WAIT_CAPTURE:
				if (brd.sns_MC3630.available()) {
					brd.sns_MC3630.end(); // stop now!
					eState = E_STATE::REQUEST_TX; loop_more = true;
				} else if ((millis() - u32tick_capture) > 100) {
					Serial << crlf << "!!!FATAL: SENSOR CAPTURE TIMEOUT.";
					eState = E_STATE::EXIT_FATAL;
				}
			break;

			case E_STATE::REQUEST_TX:
				u32tick_tx = millis();
				txid = TxReq();
				if (txid) {
					eState = E_STATE::WAIT_TX;
				} else {
					Serial << crlf << "!!!FATAL: TX REQUEST FAILS.";
					eState = E_STATE::EXIT_FATAL;
				}
			break;

			case E_STATE::WAIT_TX:
				if(the_twelite.tx_status.is_complete(txid.get_value())) {
					eState = E_STATE::EXIT_NORMAL; loop_more = true;
				} else if (millis() - u32tick_tx > 100) {
					Serial << crlf << "!!!FATAL: TX TIMEOUT.";
					eState = E_STATE::EXIT_FATAL;
				}
			break;

			case E_STATE::EXIT_NORMAL:
				sleepNow();
			break;

			case E_STATE::EXIT_FATAL:
				Serial << flush;
				the_twelite.reset_system();
			break;

int32_t x = 0, y = 0, z = 0;
for (auto&& v: brd.sns_MC3630.get_que()) {
	x += v.x;
	y += v.y;
	z += v.z;
}
x /= brd.sns_MC3630.get_que().size();
y /= brd.sns_MC3630.get_que().size();
z /= brd.sns_MC3630.get_que().size();

auto&& x_minmax = std::minmax_element(
	get_axis_x_iter(brd.sns_MC3630.get_que().begin()),
	get_axis_x_iter(brd.sns_MC3630.get_que().end()));

brd.sns_MC3630.get_que().clear(); // clean up the queue

	// prepare tx packet
	if (auto&& pkt = the_twelite.network.use<NWK_SIMPLE>().prepare_tx_packet()) {		
		// set tx packet behavior
		pkt << tx_addr(0x00)  // 0..0xFF (LID 0:parent, FE:child w/ no id, FF:LID broad cast), 0x8XXXXXXX (long address)
			<< tx_retry(0x1) // set retry (0x1 send two times in total)
			<< tx_packet_delay(0, 0, 2); // send packet w/ delay
		
		// prepare packet (first)
		pack_bytes(pkt.get_payload() // set payload data objects.
				, make_pair(FOURCHARS, 4)  // just to see packet identification, you can design in any.
				, uint16_t(x)
				, uint16_t(y)
				, uint16_t(z)
				, uint16_t(*x_minmax.first)  // minimum of captured x
				, uint16_t(*x_minmax.second) // maximum of captured x
			);

		// perform transmit
		ret = pkt.transmit();

		if (ret) {
			Serial << "..txreq(" << int(ret.get_value()) << ')';
		}

void wakeup() {
	Serial << mwx::crlf << "--- PAL_MOT(OneShot):" << FOURCHARS << " wake up ---" << mwx::crlf;
	auto&& brd = the_twelite.board.use<PAL_MOT>();

	brd.sns_MC3630.get_que().clear(); // clear queue in advance (just in case).
	brd.sns_MC3630.begin(SnsMC3630::Settings(
			SnsMC3630::MODE_LP_400HZ, SnsMC3630::RANGE_PLUS_MINUS_4G, 4)); 
				// 400Hz, +/-4G range, get four samples (can be one sample)

	b_transmit = false;
	txid = 0xFFFF;
}

void loop() {
	auto&& brd = the_twelite.board.use<PAL_MOT>();

	if (!b_transmit) {
		if (brd.sns_MC3630.available()) {
			brd.sns_MC3630.end(); // stop now!

			Serial << "..finish sensor capture." << mwx::crlf
				<< "  ct=" << int(brd.sns_MC3630.get_que().size());

			// get all samples and average them.
			int32_t x = 0, y = 0, z = 0;
			for (auto&& v: brd.sns_MC3630.get_que()) {
				x += v.x;
				y += v.y;
				z += v.z;
			}
			x /= brd.sns_MC3630.get_que().size();
			y /= brd.sns_MC3630.get_que().size();
			z /= brd.sns_MC3630.get_que().size();

			Serial << format("/ave=%d,%d,%d", x, y, z) << mwx::crlf;

			// just see X axis, min and max
			//auto&& x_axis = get_axis_x(brd.sns_MC3630.get_que());
			//auto&& x_minmax = std::minmax_element(x_axis.begin(), x_axis.end());
			auto&& x_minmax = std::minmax_element(
				get_axis_x_iter(brd.sns_MC3630.get_que().begin()),
				get_axis_x_iter(brd.sns_MC3630.get_que().end()));

			brd.sns_MC3630.get_que().clear(); // clean up the queue

			// prepare tx packet
			if (auto&& pkt = nwk.the_twelite.network.use<NWK_SIMPLE>()) {
				auto&& pkt = nwk.prepare_tx_packet(); // get new packet instance.

				// set tx packet behavior
				pkt << tx_addr(0x00)  // 0..0xFF (LID 0:parent, FE:child w/ no id, FF:LID broad cast), 0x8XXXXXXX (long address)
					<< tx_retry(0x1) // set retry (0x1 send two times in total)
					<< tx_packet_delay(0, 0, 2); // send packet w/ delay
				
				// prepare packet (first)
				pack_bytes(pkt.get_payload() // set payload data objects.
						, make_pair(FOURCHARS, 4)  // just to see packet identification, you can design in any.
						, uint16_t(x)
						, uint16_t(y)
						, uint16_t(z)
						, uint16_t(*x_minmax.first)  // minimum of captured x
						, uint16_t(*x_minmax.second) // maximum of captured x
					);

				// perform transmit
				MWX_APIRET ret = pkt.transmit();
				
				if (ret) {
					Serial << "..txreq(" << int(ret.get_value()) << ')';
					txid = ret.get_value() & 0xFF;
				} else {
					sleepNow();
				}
				
				// finished tx request
				b_transmit = true;
			}
		}
	} else {
		// wait until transmit completion.
		if(the_twelite.tx_status.is_complete(txid)) {
			sleepNow();
		}
	}
}

if (brd.sns_MC3630.available()) {
	brd.sns_MC3630.end(); // stop now!

int32_t x = 0, y = 0, z = 0;
for (auto&& v: brd.sns_MC3630.get_que()) {
	x += v.x;
	y += v.y;
	z += v.z;
}
x /= brd.sns_MC3630.get_que().size();
y /= brd.sns_MC3630.get_que().size();
z /= brd.sns_MC3630.get_que().size();

auto&& x_minmax = std::minmax_element(
	get_axis_x_iter(brd.sns_MC3630.get_que().begin()),
	get_axis_x_iter(brd.sns_MC3630.get_que().end()));

brd.sns_MC3630.get_que().clear(); // clean up the queue

// use twelite mwx c++ template library
#include <TWELITE>
#include <NWK_SIMPLE>

// application ID
const uint32_t APP_ID = 0x1234abcd;

// channel
const uint8_t CHANNEL = 13;

// DIO pins
const uint8_t PIN_BTN = 12;

/*** function prototype */
void vTransmit(const char* msg, uint32_t addr);

/*** application defs */
// packet message
const int MSG_LEN = 4;
const char MSG_PING[] = "PING";
const char MSG_PONG[] = "PONG";

void setup() {
	/*** SETUP section */
	Buttons.setup(5); // init button manager with 5 history table.
	Analogue.setup(true, 50); // setup analogue read (check every 50ms)

	// the twelite main class
	the_twelite
		<< TWENET::appid(APP_ID)    // set application ID (identify network group)
		<< TWENET::channel(CHANNEL) // set channel (pysical channel)
		<< TWENET::rx_when_idle();  // open receive circuit (if not set, it can't listen packts from others)

	// Register Network
	auto&& nwksmpl = the_twelite.network.use<NWK_SIMPLE>();
	nwksmpl << NWK_SIMPLE::logical_id(0xFE) // set Logical ID. (0xFE means a child device with no ID)
	        << NWK_SIMPLE::repeat_max(3);   // can repeat a packet up to three times. (being kind of a router)

	/*** BEGIN section */
	Buttons.begin(pack_bits(PIN_BTN), 5, 10); // check every 10ms, a change is reported by 5 consequent values.
	Analogue.begin(pack_bits(PIN_ANALOGUE::A1, PIN_ANALOGUE::VCC)); // _start continuous adc capture.

	the_twelite.begin(); // start twelite!

	/*** INIT message */
	Serial << "--- PingPong sample (press 't' to transmit) ---" << mwx::crlf;
}

	// the twelite main class
	the_twelite
		<< TWENET::appid(APP_ID)    // set application ID (identify network group)
		<< TWENET::channel(CHANNEL) // set channel (pysical channel)
		<< TWENET::rx_when_idle();  // open receive circuit (if not set, it can't listen packts from others)

auto&& nwksmpl = the_twelite.network.use<NWK_SIMPLE>();
nwksmpl << NWK_SIMPLE::logical_id(0xFE);
        << NWK_SIMPLE::repeat_max(3);

the_twelite.begin(); // start twelite!

Analogue.setup(true);

Analogue.begin(pack_bits(PIN_ANALOGUE::A1, PIN_ANALOGUE::VCC), 50); 

Buttons.setup(5);

Buttons.begin(pack_bits(PIN_BTN),
					5, 		// history count
					10);  	// tick delta

Serial << "--- PingPong sample (press 't' to transmit) ---" << mwx::crlf;

void loop() {
	  // read from serial
		while(Serial.available())  {
				int c = Serial.read();
				Serial << mwx::crlf << char(c) << ':';
				switch(c) {
				    case 't':
				    	  vTransmit(MSG_PING, 0xFF);
				        break;
				    default:
							  break;
				}
		}


	// Button press
	if (Buttons.available()) {
		uint32_t btn_state, change_mask;
		Buttons.read(btn_state, change_mask);

		// Serial << fmt("<BTN %b:%b>", btn_state, change_mask);
		if (!(change_mask & 0x80000000) && (btn_state && (1UL << PIN_BTN))) {
			// PIN_BTN pressed
			vTransmit(MSG_PING, 0xFF);
		}
	}

	// receive RF packet.
    while (the_twelite.receiver.available()) {
		auto&& rx = the_twelite.receiver.read();

		// rx >> Serial; // debugging (display longer packet information)

		uint8_t msg[MSG_LEN];
		uint16_t adcval, volt;
		uint32_t timestamp;

		// expand packet payload (shall match with sent packet data structure, see pack_bytes())
		expand_bytes(rx.get_payload().begin(), rx.get_payload().end()
					, msg       // 4bytes of msg
								//   also can be -> std::make_pair(&msg[0], MSG_LEN)
					, adcval    // 2bytes, A1 value [0..1023]
				    , volt      // 2bytes, Module VCC[mV]
					, timestamp // 4bytes of timestamp
        );
		
		// if PING packet, respond pong!
        if (!strncmp((const char*)msg, "PING", MSG_LEN)) {
			// transmit a PONG packet with specifying the address.
            vTransmit(MSG_PONG, rx.get_psRxDataApp()->u32SrcAddr);
        }

		// display the packet
		Serial << format("<RX ad=%x/lq=%d/ln=%d/sq=%d:" // note: up to 4 args!
                    , rx.get_psRxDataApp()->u32SrcAddr
                    , rx.get_lqi()
                    , rx.get_length()
					, rx.get_psRxDataApp()->u8Seq
                    )
				<< format(" %s AD=%d V=%d TS=%dms>" // note: up to 4 args!
					, msg
					, adcval
					, volt
					, timestamp
					)
               << mwx::crlf
			   << mwx::flush;
	}
}

		while(Serial.available())  {
				int c = Serial.read();
				Serial << mwx::crlf << char(c) << ':';
				switch(c) {
				    case 't':
				    	  vTransmit(MSG_PING, 0xFF);
				        break;
				    default:
							  break;
				}
		}

	if (Buttons.available()) {
		uint32_t btn_state, change_mask;
		Buttons.read(btn_state, change_mask);

// Serial << fmt("<BTN %b:%b>", btn_state, change_mask);
if (!(change_mask & 0x80000000) && (btn_state && (1UL << PIN_BTN))) {
	// PIN_BTN pressed
	vTransmit(MSG_PING, 0xFF);

if (Timer0.available()) {
	static uint8_t u16ct;
	u16ct++;

	if (u8DI_BM != 0xFF && au16AI[0] != 0xFFFF) { // finished the first capture
		if ((u16ct % 32) == 0) { // every 32ticks of Timer0
			transmit();
		}
	}
}

while (the_twelite.receiver.available()) {
		auto&& rx = the_twelite.receiver.read();

		uint8_t msg[MSG_LEN];
		uint16_t adcval, volt;
		uint32_t timestamp;

		// expand packet payload (shall match with sent packet data structure, see pack_bytes())
		expand_bytes(rx.get_payload().begin(), rx.get_payload().end()
					, msg       // 4bytes of msg
											//   also can be -> std::make_pair(&msg[0], MSG_LEN)
					, adcval    // 2bytes, A1 value [0..1023]
				  , volt      // 2bytes, Module VCC[mV]
					, timestamp // 4bytes of timestamp
        );
		
		// if PING packet, respond pong!
    if (!strncmp((const char*)msg, "PING", MSG_LEN)) {
				// transmit a PONG packet with specifying the address.
        vTransmit(MSG_PONG, rx.get_psRxDataApp()->u32SrcAddr);
    }

		// display the packet
		Serial << format("<RX ad=%x/lq=%d/ln=%d/sq=%d:" // note: up to 4 args!
                    , rx.get_psRxDataApp()->u32SrcAddr
                    , rx.get_lqi()
                    , rx.get_length()
					, rx.get_psRxDataApp()->u8Seq
                    )
				<< format(" %s AD=%d V=%d TS=%dms>" // note: up to 4 args!
					, msg
					, adcval
					, volt
					, timestamp
					)
               << mwx::crlf
			   << mwx::flush;
	}