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

#include <TWELITE>
#include <NWK_SIMPLE>
#include <SM_SIMPLE>

#include "Common.h"

enum class 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)
};

SM_SIMPLE<STATE> step;

struct {
	uint16_t dummy_work_ct_now;
	uint16_t dummy_work_ct_max;  // counter for dummy work job. 
} sensor;

void setup() {
	/*** SETUP section */
	step.setup(); // init state machine
	
	// 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;
}

the_twelite.begin(); // start twelite!

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

void wakeup() {
　memset(&sensor, 0, sizeof(sensor));
	Serial << crlf << int(millis()) << ":wake up!" << crlf;
}

void loop() {
	do {
		switch(step.state()) {
		case STATE::INIT:
			sensor.dummy_work_ct_now = 0;
			sensor.dummy_work_ct_max = random(10,1000);
			step.next(STATE::WORK_JOB);
		break;

		...
		}
	} while (step.b_more_loop());
}

sensor.dummy_work_ct_now = 0;
sensor.dummy_work_ct_max = random(10,1000);

step.next(STATE::WORK_JOB);

if (TickTimer.available()) {
	Serial << '.';
	sensor.dummy_work_ct_now++;
	if (sensor.dummy_work_ct_now >= sensor.dummy_work_ct_max) {
		Serial << crlf;
		step.next(STATE::TX);
	}
}

if (Transmit()) {
	Serial << int(millis()) << ":tx request success!" << crlf;
	step.set_timeout(100);
	step.clear_flag();
	step.next(STATE::WAIT_TX);
} else {
	// normall it should not be here.
	Serial << int(millis()) << "!FATAL: tx request failed." << crlf;
	step.next(STATE::EXIT_FATAL);
}

if (step.is_flag_ready()) {
	Serial << int(millis()) << ":tx completed!" << crlf;
	step.next(STATE::EXIT_NORMAL);
} else if (step.is_timeout()) {
	Serial << int(millis()) << "!FATAL: tx timeout." << crlf;
	step.next(STATE::EXIT_FATAL);
}

SleepNow();

Serial << crlf << "!FATAL: RESET THE SYSTEM.";
delay(1000); // wait a while.
the_twelite.reset_system();

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;
	Serial.flush();

	step.on_sleep(); // reset status of statemachine to INIT state.

	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.
			, uint16_t(sensor.dummy_work_ct_now) // put dummy sensor information.
		);
		
		// do transmit 
		//return nwksmpl.transmit(pkt);
		return pkt.transmit(); 
	}

	return MWX_APIRET(false, 0);
}

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

pkt << tx_addr(0x00) // 宛先
		<< tx_retry(0x1) // 再送回数
		<< tx_packet_delay(0,0,2); // 送信遅延

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.
	, uint16_t(sensor.dummy_work_ct_now) // put dummy sensor information.
);	

return pkt.transmit(); 

void on_tx_comp(mwx::packet_ev_tx& ev, bool_t &b_handled) {
	step.set_flag(ev.bStatus);
}

void setup() {
	/*** SETUP section */
	tx_busy = false;

	// 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>();
	nwk	<< NWK_SIMPLE::logical_id(0xFE); // set Logical ID. (0xFE means a child device with no ID)

	/*** BEGIN section */
	Buttons.begin(pack_bits(PIN_BTN), 5, 10); // check every 10ms, a change is reported by 5 consequent values.

	the_twelite.begin(); // start twelite!

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

the_twelite.begin(); // start twelite!

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)
        if (!tx_busy) {
					tx_busy = Transmit();
					if (tx_busy) {
						Serial  << int(millis()) << ":tx request success! (" 
										<< int(tx_busy.get_value()) << ')' << mwx::crlf;
 					} else {
						Serial << int(millis()) << ":tx request failed" << mwx::crlf;;
					}
				}
  case 's': ... // スリープする
				Serial << int(millis()) << ":sleeping for " << 5000 << "ms" << mwx::crlf << mwx::flush;
				the_twelite.sleep(5000);
				break;
  }
}

the_twelite.sleep(5000);

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

MWX_APIRET Transmit() {
	Serial << int(millis()) << ":Transmit()" << 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(); 
	} else {
		// .prepare_tx_packet() 時点で失敗している(送信キューが一杯)
		Serial << "TX QUEUE is FULL" << mwx::crlf;
	  return MWX_APIRET(false, 0);
	}
}

void on_tx_comp(mwx::packet_ev_tx& ev, bool_t &b_handled) {
	Serial 	<< int(millis()) << ":tx completed!"
			<< format("(id=%d, stat=%d)", ev.u8CbId, ev.bStatus) << mwx::crlf;
	tx_busy = false; // clear tx busy flag.
}

void on_rx_packet(packet_rx& rx, bool_t &handled) {
	Serial << format("rx from %08x/%d", 
					rx.get_addr_src_long(), rx.get_addr_src_lid()) << mwx::crlf;
}

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);
}

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

/*** Config part */
// application ID
const uint32_t DEFAULT_APP_ID = 0x1234abcd;
// channel
const uint8_t DEFAULT_CHANNEL = 13;
// option bits
uint32_t OPT_BITS = 0;
// logical id
uint8_t LID = 0;

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

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

// sensor values
uint16_t au16AI[5];
uint8_t u8DI_BM;

void setup() {
	/*** SETUP section */	
	// init vars
	for(auto&& x : au16AI) x = 0xFFFF;
	u8DI_BM = 0xFF;

	// load board and settings
	auto&& set = the_twelite.settings.use<STG_STD>();
	auto&& brd = the_twelite.board.use<BRD_APPTWELITE>();
	auto&& nwk = the_twelite.network.use<NWK_SIMPLE>();

	// settings: configure items
	set << SETTINGS::appname("BRD_APPTWELITE");
	set << SETTINGS::appid_default(DEFAULT_APP_ID); // set default appID
	set << SETTINGS::ch_default(DEFAULT_CHANNEL); // set default channel
	set.hide_items(E_STGSTD_SETID::OPT_DWORD2, E_STGSTD_SETID::OPT_DWORD3, E_STGSTD_SETID::OPT_DWORD4, E_STGSTD_SETID::ENC_KEY_STRING, E_STGSTD_SETID::ENC_MODE);
	set.reload(); // load from EEPROM.
	OPT_BITS = set.u32opt1(); // this value is not used in this example.
	LID = set.u8devid(); // logical ID

	// the twelite main class
	the_twelite
		<< set                      // apply settings (appid, ch, power)
		<< TWENET::rx_when_idle();  // open receive circuit (if not set, it can't listen packts from others)

	if (brd.get_M1()) { LID = 0; }

	// Register Network
	nwk << set // apply settings (LID and retry)
			;

	// if M1 pin is set, force parent device (LID=0)
	nwk << NWK_SIMPLE::logical_id(LID); // write logical id again.
	
	/*** BEGIN section */
	// start ADC capture
	Analogue.setup(true, ANALOGUE::KICK_BY_TIMER0); // setup analogue read (check every 16ms)
	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.setup(5); // init button manager with 5 history table.
	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 ---" << mwx::crlf;
	Serial	<< format("-- app:x%08x/ch:%d/lid:%d"
					, the_twelite.get_appid()
					, the_twelite.get_channel()
					, nwk.get_config().u8Lid
				)
			<< mwx::crlf;
	Serial 	<< format("-- pw:%d/retry:%d/opt:x%08x"
					, the_twelite.get_tx_power()
					, nwk.get_config().u8RetryDefault
					, OPT_BITS
			)
			<< mwx::crlf;
}

	auto&& set = the_twelite.settings.use<STG_STD>();
	auto&& brd = the_twelite.board.use<BRD_APPTWELITE>();
	auto&& nwk = the_twelite.network.use<NWK_SIMPLE>();

// インタラクティブモードの初期化
auto&& set = the_twelite.settings.use<STG_STD>();

set << SETTINGS::appname("BRD_APPTWELITE");
set << SETTINGS::appid_default(DEFAULT_APP_ID); // set default appID
set << SETTINGS::ch_default(DEFAULT_CHANNEL); // set default channel
set.hide_items(E_STGSTD_SETID::OPT_DWORD2, E_STGSTD_SETID::OPT_DWORD3, E_STGSTD_SETID::OPT_DWORD4, E_STGSTD_SETID::ENC_KEY_STRING, E_STGSTD_SETID::ENC_MODE);
set.reload(); // load from EEPROM.
OPT_BITS = set.u32opt1(); // this value is not used in this example.
LID = set.u8devid(); // logical ID;

[CONFIG/BRD_APPTWELITE:0/SID=8XXYYYYY]
a: (0x1234ABCD) Application ID [HEX:32bit]
i: (        13) Device ID [1-100,etc]
c: (        13) Channel [11-26]
x: (      0x03) RF Power/Retry [HEX:8bit]
o: (0x00000000) Option Bits [HEX:32bit]

 [ESC]:Back [!]:Reset System [M]:Extr Menu    

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

	if (brd.get_M1()) { LID = 0; }

	// the twelite main class
	the_twelite
		<< set
		<< TWENET::rx_when_idle();  // open receive circuit (if not set, it can't listen packts from others)

auto&& nwk = the_twelite.network.use<NWK_SIMPLE>();
nwk << set;
nwk << NWK_SIMPLE::logical_id(LID);

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

the_twelite.begin(); // start twelite!

	Serial 	<< "--- BRD_APPTWELITE ---" << mwx::crlf;
	Serial	<< format("-- app:x%08x/ch:%d/lid:%d"
					, the_twelite.get_appid()
					, the_twelite.get_channel()
					, nwk.get_config().u8Lid
				)
			<< mwx::crlf;
	Serial 	<< format("-- pw:%d/retry:%d/opt:x%08x"
					, the_twelite.get_tx_power()
					, nwk.get_config().u8RetryDefault
					, OPT_BITS
			)
			<< 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();
			}
		}
	}
}

	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();
		}
	}
}

MWX_APIRET transmit() {
	if (auto&& pkt = the_twelite.network.use<NWK_SIMPLE>().prepare_tx_packet()) {
	  auto&& set = the_twelite.settings.use<STG_STD>();
		if (!set.is_screen_opened()) {
			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()) {

auto&& set = the_twelite.settings.use<STG_STD>();
if (!set.is_screen_opened()) {
    //インタラクティブモード画面中ではない！
}

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 on_rx_packet(packet_rx& rx, bool_t &handled) {	
	auto&& set = the_twelite.settings.use<STG_STD>();

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

  // 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]);
}

void on_rx_packet(packet_rx& rx, bool_t &handled)

if (!set.is_screen_opened()) {
   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]
	);

auto&& set = the_twelite.settings.use<STG_STD>();
...
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]);

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

// application ID
const uint32_t DEFAULT_APP_ID = 0x1234abcd;
// channel
const uint8_t DEFAULT_CHANNEL = 13;
// option bits
uint32_t OPT_BITS = 0;

/*** function prototype */
bool analyze_payload(packet_rx& rx);

auto&& brd = the_twelite.board.use<MONOSTICK>();
auto&& set = the_twelite.settings.use<STG_STD>();
auto&& nwk = the_twelite.network.use<NWK_SIMPLE>();

set << SETTINGS::appname("PARENT"); // 設定画面中のタイトル
set << SETTINGS::appid_default(DEFAULT_APP_ID); // アプリケーションIDデフォルト
set << SETTINGS::ch_default(DEFAULT_CHANNEL); // チャネルデフォルト
set << SETTINGS::lid_default(0x00); // LIDデフォルト
set.hide_items(E_STGSTD_SETID::OPT_DWORD2, E_STGSTD_SETID::OPT_DWORD3, E_STGSTD_SETID::OPT_DWORD4, E_STGSTD_SETID::ENC_KEY_STRING, E_STGSTD_SETID::ENC_MODE);
set.reload(); // 設定を不揮発性メモリから読み出す
OPT_BITS = set.u32opt1(); // 読み込み例（オプションビット）

the_twelite
	<< set                    // インタラクティブモードの設定を反映
	<< TWENET::rx_when_idle() // 受信するように指定
	;

// Register Network
nwk << set;							// インタラクティブモードの設定を反映
nwk << NWK_SIMPLE::logical_id(0x00) // LIDだけは再設定
	;

brd.set_led_red(LED_TIMER::ON_RX, 200); // RED (on receiving)
brd.set_led_yellow(LED_TIMER::BLINK, 500); // YELLOW (blinking)

the_twelite.begin(); // start twelite!

void loop() {
}

void on_rx_packet(packet_rx& rx, bool_t &handled) {  
	Serial << ".. coming packet (" << int(millis()&0xffff) << ')' << mwx::crlf;

  ...
  
	// packet analyze
	analyze_payload(rx);
}

bool b_handled = false;

uint8_t fourchars[4]{};
auto&& np = expand_bytes(
	    rx.get_payload().begin(), rx.get_payload().end()
		, fourchars
    );
    
if (np == nullptr) return;

// display fourchars at first
Serial
	<< fourchars 
	<< format("(ID=%d/LQ=%d)", rx.get_addr_src_lid(), rx.get_lqi())
	<< "-> ";
	

// Slp_Wk_and_Tx
if (!b_handled && !strncmp(fourchars, "TXSP", 4)) {
	b_handled = true;
	uint32_t tick_ms;
	uint16_t u16work_ct;

	np = expand_bytes(np, rx.get_payload().end()
		, tick_ms
		, u16work_ct
	);

	if (np != nullptr) {
		Serial << format("Tick=%d WkCt=%d", tick_ms, u16work_ct);
	} else {
		Serial << ".. error ..";
	}
}