AOTS實(shí)驗(yàn)報(bào)告

1、計(jì)算機(jī)科學(xué)與技術(shù)學(xué)院、軟件學(xué)院學(xué)生實(shí)驗(yàn)報(bào)告實(shí)驗(yàn)題目： 基于ATOS平臺(tái)的物聯(lián)網(wǎng)實(shí)驗(yàn) 學(xué)生姓名： 指導(dǎo)教師： 專業(yè)班級(jí)： 提交日期： 49 實(shí)驗(yàn)一 LED組件1.1 實(shí)驗(yàn)要求綠燈一直處于熄滅的狀態(tài)，紅燈不停閃爍（注意：工具箱提供的代碼有bug，對(duì)于基站節(jié)點(diǎn)LED_BLUE -> 紅燈 LED_YELLOW -> 綠燈 ON和OFF邏輯相反）1.2 實(shí)驗(yàn)思路將綠燈狀態(tài)改為OFF，紅燈通過(guò)時(shí)間延遲控制其的亮滅。1.3 實(shí)驗(yàn)關(guān)鍵代碼/* LED 示例程序的實(shí)現(xiàn)模塊，簡(jiǎn)單的點(diǎn)亮3個(gè)LED燈date 2010-1*/module LedMuses interface Boot;implemen

2、tation/* LED燈演示*/task void DemoLed()/* 目前節(jié)點(diǎn)上提供兩個(gè)LED燈LED_BLUE -> 藍(lán)燈LED_YELLOW -> 黃燈*/int i,j;while(1)for(i=0;i<1000;i+)for(j=0;j<500;j+);LED_BLUE_OFF; /* 熄滅藍(lán)色LED燈 */LED_YELLOW_OFF; /* 點(diǎn)亮黃色LED燈 */for(i=0;i<1000;i+)for(j=0;j<500;j+);LED_BLUE_ON; /* 熄滅藍(lán)色LED燈 */LED_YELLOW_OFF; /* 點(diǎn)亮黃色LE

3、D燈 */* 啟動(dòng)事件處理函數(shù)，在LED.nc已經(jīng)關(guān)聯(lián)到MainC.Boot接口系統(tǒng)啟動(dòng)后會(huì)調(diào)用此函數(shù)*/event void Boot.booted()post DemoLed();1.4 實(shí)驗(yàn)截圖1.5 實(shí)驗(yàn)心得通過(guò)這次實(shí)驗(yàn)，掌握了對(duì) LED的簡(jiǎn)單控制，受益匪淺，并且對(duì)此次實(shí)驗(yàn)的運(yùn)作過(guò)程開(kāi)始了解。 實(shí)驗(yàn)二 定時(shí)器組件1.1 實(shí)驗(yàn)要求通過(guò)定時(shí)器讓綠色燈閃爍，并且閃爍三次后停止閃爍。1.2 實(shí)驗(yàn)思路設(shè)置一個(gè)變量，在計(jì)時(shí)器每計(jì)數(shù)一次自加一次，加到三時(shí)，停止計(jì)時(shí)器。1.3 實(shí)驗(yàn)關(guān)鍵代碼#define DBG_LEV 5module TimerLedMuses interface Boot;/* T

4、imer為系統(tǒng)接口TMilli指明了定時(shí)器的精度為毫秒 */uses interface Timer<TMilli> as Timer1; /* as關(guān)鍵字為接口別名 */uses interface Timer<TMilli> as Timer2;implementation/* 任務(wù): 切換黃色LED燈 */int i=0;/* 啟動(dòng)事件處理函數(shù)，在TimerLed.nc已經(jīng)關(guān)聯(lián)到MainC.Boot接口系統(tǒng)啟動(dòng)后會(huì)調(diào)用此函數(shù)*/event void Boot.booted()/* 定時(shí)器1: 持續(xù)工作，每隔1s觸發(fā)一次 */call Timer1.startPer

5、iodic(1000);/* 定時(shí)器2: 持續(xù)工作，每隔3s觸發(fā)一次*/call Timer2.startPeriodic(5000);/* 定時(shí)器1的事件處理函數(shù) */event void Timer1.fired()/* 事件處理中直接切換藍(lán)色LED燈 */ADBG(5, "led blue toggle.rn");/LED_BLUE_TOGGLE;ADBG(5, "led yellow toggle.rn");/post ToggleLedYellow();LED_YELLOW_TOGGLE;i=i+1;if(i=3) call Timer1.st

6、op(); /通過(guò)stop函數(shù)使定時(shí)器停止/* 定時(shí)器2的事件處理函數(shù) */event void Timer2.fired()/ADBG(5, "led yellow toggle.rn");/post ToggleLedYellow();1.4 實(shí)驗(yàn)截圖1.5 實(shí)驗(yàn)心得通過(guò)此次實(shí)驗(yàn)，加強(qiáng)了我對(duì)代碼的思考，更加了解定時(shí)器函數(shù)的使用。實(shí)驗(yàn)三 串口調(diào)試1.1 實(shí)驗(yàn)要求通過(guò)級(jí)別控制，使得某些調(diào)試語(yǔ)句沒(méi)有被輸出到串口。1.2 實(shí)驗(yàn)思路默認(rèn)的ADBG_LEV為3000，將語(yǔ)句中的DBG_LEV參數(shù)改為比默認(rèn)的ADBG_LEV小即可1.3 實(shí)驗(yàn)關(guān)鍵代碼/* 串口調(diào)試程序的實(shí)現(xiàn)模塊dat

7、e */* 定義調(diào)試級(jí)別，參加Makefile的ADBG_LEVEL定義，設(shè)置大于等于ADBG_LEVEL */#define DBG_LEV3000module SerialDebugMuses interface Boot;implementation/* 任務(wù): 通過(guò)串口打印信息來(lái)調(diào)試 */task void DebugSerial()uint8_t num1 = 0x39;uint32_t num2 = 0x12345678;float float1 = 123.1234;/* ADBG，格式類似于printf,第一個(gè)參數(shù)為調(diào)試等級(jí)，可以參見(jiàn)tos/lib/common/antdebu

8、g.h */* 打印字符和字符串 */ADBG(DBG_LEV, "rnrnDEMO of Serial Debugrn", 'x');ADBG(DBG_LEV, "1. This is a string, and this is char '%c'rn", 'x');/* 打印8位的數(shù)字 */ADBG(DBG_LEV, "2. NUM1: HEX=0x%x, DEC=%drn", (int)(num1), (int)(num1);/* 打印32位數(shù)字 */ADBG(2000, &quo

9、t;2. NUM2: HEX=0x%lx, DEC=%ldrn", (uint32_t)(num2), (uint32_t) (num2);/* 打印浮點(diǎn)數(shù)*/ADBG(DBG_LEV, "3. FLOAT: %frn", float1);/* 啟動(dòng)事件處理函數(shù)，在SerialDebug.nc已經(jīng)關(guān)聯(lián)到MainC.Boot接口系統(tǒng)啟動(dòng)后會(huì)調(diào)用此函數(shù)*/event void Boot.booted()post DebugSerial();1.4 實(shí)驗(yàn)截圖圖1 未屏蔽前圖2 屏蔽后1.5 實(shí)驗(yàn)心得此次實(shí)驗(yàn)加深了我對(duì)串口的了解與使用，是一次非常好的實(shí)驗(yàn)材料，受益匪淺。實(shí)

10、驗(yàn)四 串口通信1.1 實(shí)驗(yàn)要求實(shí)現(xiàn)一個(gè)串口實(shí)驗(yàn)，在串口助手中實(shí)現(xiàn)回顯的功能。(鍵盤鍵入的任何內(nèi)容回車后顯示在串口助手的終端)1.2 實(shí)驗(yàn)思路直接在原有的UartStream.receivedByte函數(shù)基礎(chǔ)上修改，直接輸出結(jié)果1.3 實(shí)驗(yàn)關(guān)鍵代碼/* 串口輸入輸出程序的實(shí)現(xiàn)模塊authordate */#include <strings.h>/* 定義此宏，將演示UartStream.receive函數(shù)，允許一次指定數(shù)量的數(shù)據(jù) */#define SERIALIO_RECEIVE#define DBG_LEV3000module SerialIoMuses interface Bo

11、ot;uses interface StdControl as UartStdControl;uses interface UartStream;implementationuint8_t m_receive_len;uint8_t m_echo_buf;uint8_t m_send_buf100;/* 顯示一個(gè)菜單提示用戶 */void showMenu() strcpy(m_send_buf, "rnrnDemo of Serio I/Orn1 Toggle BLUE LEDrn2 Toggle YELLOW LEDrn");/* 通過(guò)UartStream.send可以

12、發(fā)送字節(jié)數(shù)據(jù) */call UartStream.send(m_send_buf, strlen(m_send_buf);/* 啟動(dòng)事件處理函數(shù)，在SerialIo.nc已經(jīng)關(guān)聯(lián)到MainC.Boot接口系統(tǒng)啟動(dòng)后會(huì)調(diào)用此函數(shù)*/event void Boot.booted()LED_BLUE_ON;LED_YELLOW_ON;call UartStdControl.start();showMenu();async event void UartStream.sendDone(uint8_t *buf, uint16_t len, error_t error)/* 重新發(fā)送剛才接收的字符進(jìn)行回

13、顯 */task void showMenuTask()showMenu();task void lightLED()if(m_echo_buf='1')LED_BLUE_TOGGLE; /* 切換藍(lán)色LED燈 */ADBG(DBG_LEV, "You choose to toggle BLUE LEDrn");else if (m_echo_buf = '2')LED_YELLOW_TOGGLE; /* 切換黃色LED燈 */ADBG(DBG_LEV, "You choose to toggle YELLOW LEDrn"

14、;);/* 如果沒(méi)有調(diào)用receive接收，則每接收到一個(gè)數(shù)據(jù)就會(huì)觸發(fā)此事件 */async event void UartStream.receivedByte(uint8_t byte)m_echo_buf = byte;ADBG(DBG_LEV, "%cr",m_echo_buf); /將byte直接輸出post lightLED(); /* 在接收完receive命令欲接收的長(zhǎng)度后會(huì)調(diào)用此事件 */async event void UartStream.receiveDone(uint8_t *buf, uint16_t len, error_t error)1.4

15、 實(shí)驗(yàn)截圖1.5 實(shí)驗(yàn)心得通過(guò)這次實(shí)驗(yàn)，對(duì)串口通信的原理有了大致的了解，同時(shí)也更加深刻了我對(duì)這門課的認(rèn)識(shí)，鞏固了我的理論知識(shí)。實(shí)驗(yàn)五 FLASH讀寫1.1 實(shí)驗(yàn)要求自己定義一個(gè)結(jié)構(gòu)體，并且將結(jié)構(gòu)體的內(nèi)容寫入到0x1fff8，并且在寫完后將結(jié)構(gòu)體的數(shù)據(jù)讀取出來(lái)和原始數(shù)據(jù)進(jìn)行比較。1.2 實(shí)驗(yàn)思路將原有代碼的讀寫數(shù)組改成結(jié)構(gòu)體中的數(shù)組即可1.3 實(shí)驗(yàn)關(guān)鍵代碼/* 定義調(diào)試級(jí)別，參加Makefile的ADBG_LEVEL定義，設(shè)置大于等于ADBG_LEVEL */#define DBG_LEV3000module TestFlashCuses interface Boot;uses interfac

16、e HalFlash;implementation struct data uint8_t ieee38; uint8_t ieee48; ; struct data arr;task void initTask() uint8_t i; arr.ieee40=2; arr.ieee41=2; arr.ieee42=3; arr.ieee43=3; arr.ieee44=4; arr.ieee45=4; arr.ieee46=5; arr.ieee47=5;ADBG(DBG_LEV, "read now n");call HalFlash.erase(uint8_t*)0x

17、1fff8);for (i=0; i < 8; i+=4)call HalFlash.write(uint8_t*)(0x1FFF8+i), (arr.ieee4+i), 4);call HalFlash.read(arr.ieee3, (uint8_t *)0x1FFF8, 8);ADBG(DBG_LEV, "read ok.n");for (i=0; i < sizeof(arr.ieee3); +i)ADBG(DBG_LEV, "arr.ieee3%d=%dn", (int)i, (int)arr.ieee3i);event void

18、Boot.booted()ADBG(DBG_LEV, "Boot.bootedn");post initTask();1.4 實(shí)驗(yàn)截圖1.5 實(shí)驗(yàn)心得通過(guò)這次實(shí)驗(yàn)，對(duì)FlASH讀寫的原理有了大致的了解，同時(shí)也更加深刻了我對(duì)這門課的認(rèn)識(shí)，鞏固了我的理論知識(shí)。實(shí)驗(yàn)六 點(diǎn)對(duì)點(diǎn)通信1.1 實(shí)驗(yàn)要求完成一個(gè)兩跳點(diǎn)對(duì)點(diǎn)的傳輸，讓基站給節(jié)點(diǎn)1發(fā)送一個(gè)消息，節(jié)點(diǎn)1在接收到消息后將自己的藍(lán)燈狀態(tài)改變，延遲1s后將消息繼續(xù)傳遞給節(jié)點(diǎn)2，節(jié)點(diǎn)2在接收到消息后將自己的黃燈狀態(tài)改變。1.2 實(shí)驗(yàn)思路1.3 實(shí)驗(yàn)關(guān)鍵代碼基站節(jié)點(diǎn) 同節(jié)點(diǎn)2#define DBG_LEV 1000module P2PMu

19、ses interface Boot;interface AtosControl;interface StdControl as UartStdControl;interface UartStream;interface AMSend;interface Receive;interface AMPacket;interface Packet;implementationenumMAX_ADDRESS_LEN = 5,INPUT_ADDRESS = 0,INPUT_DATA = 1,;message_t m_msg;uint8_t m_len = 0;char m_address_strMAX_

20、ADDRESS_LEN = 0;uint8_t m_address_index = 0;uint8_t m_input_type = 0;/* 顯示菜單*/task void showMenu()if( m_input_type = INPUT_DATA)/*等待輸入欲發(fā)送的數(shù)據(jù)*/ADBG_APP( "rn* To Send:rn");else/*等待輸入欲發(fā)送的地址*/ADBG_APP( "rn#rn* MY NodeId = 0x%x, Group=0x%x, destination ?rn",ADBG_N(call AMPacket.addres

21、s(),ADBG_N(TOS_IEEE_PANID);m_input_type = INPUT_ADDRESS;m_address_index = 0;/*將從串口輸入的地址字符串轉(zhuǎn)化為真實(shí)地址*/uint16_t getDestAddress()uint16_t address = 0;uint8_t i = 0;if(m_address_index > MAX_ADDRESS_LEN)m_address_index = MAX_ADDRESS_LEN -1;for ( i=0; i < m_address_index; +i)uint8_t digital = m_addres

22、s_stri;if(digital >= 'A' && digital <= 'F')digital = digital - 'A' + 10;else if(digital >= 'a' && digital <= 'f')digital = digital - 'a' + 10;else if(digital >= '0' && digital <= '9')digital = d

23、igital - '0'address = address*16 +digital;return address;/* 發(fā)送數(shù)據(jù)*/task void sendData()uint8_t i;uint8_t* payload = call Packet.getPayload(&m_msg, NULL);uint16_t address = call AMPacket.address();uint16_t dest_address = getDestAddress();ADBG_APP( "rnrn* Sending . from %d, to %d, len=

24、%drn",ADBG_N(address),ADBG_N(dest_address),ADBG_N(m_len);call AMSend.send(dest_address, &m_msg, m_len);/LED_BLUE_TOGGLE;/*發(fā)送完處理*/event void AMSend.sendDone(message_t* msg, error_t result)/ADBG_APP( "send donen");ADBG_APP( "* Sent%s!rn", (result = SUCCESS) ? "OK"

25、; : "FAIL");if (result = SUCCESS)LED_BLUE_TOGGLE;elseLED_YELLOW_TOGGLE;m_len = 0;m_input_type = INPUT_ADDRESS;post showMenu();/* 節(jié)點(diǎn)啟動(dòng)完畢*/event void Boot.booted()/*開(kāi)啟射頻*/call AtosControl.start();/*開(kāi)啟串口通信*/call UartStdControl.start();LED_YELLOW_OFF;LED_BLUE_OFF;ADBG_APP( "rn#rn");A

26、DBG_APP( " P2PDEMO My Address = 0x%x, Group = 0x%xrn", ADBG_N(call AMPacket.address(), ADBG_N(TOS_IEEE_PANID);ADBG_APP( "#rn");m_input_type = INPUT_ADDRESS;post showMenu();/*從串口接收數(shù)據(jù)*/async event void UartStream.receivedByte(uint8_t c)if(c != 'r')if (m_input_type = INPUT_D

27、ATA)/*輸入數(shù)據(jù)*/uint8_t* payload = (uint8_t*)call Packet.getPayload(&m_msg, NULL);if(m_len >= call Packet.maxPayloadLength()return;payloadm_len+ = c;ADBG_APP( "%c", c);if(m_len < call Packet.maxPayloadLength()return;else/*輸入地址*/if(m_address_index < MAX_ADDRESS_LEN)m_address_strm_a

28、ddress_index+ = c;ADBG_APP( "%c", c);if(m_address_index < MAX_ADDRESS_LEN)return;/*按下回車鍵或者到達(dá)最大長(zhǎng)度，則處理*/if(m_input_type = INPUT_DATA)post sendData();else/*地址處理完畢，準(zhǔn)備輸入數(shù)據(jù)*/m_input_type = INPUT_DATA;post showMenu();/* 實(shí)現(xiàn)接口UartStream 接口中的事件*/async event void UartStream.sendDone(uint8_t* buf,

29、uint16_t len, error_t error)async event void UartStream.receiveDone(uint8_t* buf, uint16_t len, error_t error)/*射頻接收數(shù)據(jù)*/event message_t* Receive.receive(message_t* msg, void* payload, uint8_t len)uint8_t i;ADBG_APP( "rn*Receive, len = %d, DATA:rn", ADBG_N(len);for(i=0; i < len; i+)ADBG_

30、APP( "%c", (uint8_t*)payload)i);ADBG_APP( "rn");LED_YELLOW_TOGGLE;m_input_type = INPUT_ADDRESS;節(jié)點(diǎn)1:(P2PC中添加Timer1的定時(shí)器聲明)configuration P2PCimplementationcomponents P2PM;components MainC;P2PM.Boot -> MainC.Boot;/* 串口收發(fā)組件*/components PlatformSerialC;P2PM.UartStdControl -> Plat

31、formSerialC;P2PM.UartStream -> PlatformSerialC;/*活動(dòng)消息組件*/ components new PlatformMacC(123);components AtosMacC;P2PM.AtosControl -> AtosMacC;P2PM.AMPacket -> PlatformMacC;P2PM.Packet -> PlatformMacC;P2PM.AMSend -> PlatformMacC;P2PM.Receive ->PlatformMacC;components new TimerMilliC()

32、 as Timer1;P2PM.Timer1 -> Timer1; / 添加Timer1的定時(shí)器聲明#define DBG_LEV 1000module P2PMuses interface Boot;interface AtosControl;interface StdControl as UartStdControl;interface UartStream;interface AMSend;interface Receive;interface AMPacket;interface Packet;interface Timer<TMilli> as Timer1; im

33、plementationenumMAX_ADDRESS_LEN = 5,INPUT_ADDRESS = 0,INPUT_DATA = 1,;message_t m_msg;uint8_t m_len = 0;char m_address_strMAX_ADDRESS_LEN = 0;uint8_t m_address_index = 0;uint8_t m_input_type = 0;/* 顯示菜單*/task void showMenu()if( m_input_type = INPUT_DATA)/*等待輸入欲發(fā)送的數(shù)據(jù)*/ADBG_APP( "rn* To Send:rn&q

34、uot;);else/*等待輸入欲發(fā)送的地址*/ADBG_APP( "rn# rn* MY NodeId = 0x%x, Group=0x%x, destination ?rn",ADBG_N(call AMPacket.address(),ADBG_N(TOS_IEEE_PANID);m_input_type = INPUT_ADDRESS;m_address_index = 0;/*將從串口輸入的地址字符串轉(zhuǎn)化為真實(shí)地址*/uint16_t getDestAddress()uint16_t address = 0;uint8_t i = 0;if(m_address_i

35、ndex > MAX_ADDRESS_LEN)m_address_index = MAX_ADDRESS_LEN -1;for ( i=0; i < m_address_index; +i)uint8_t digital = m_address_stri;if(digital >= 'A' && digital <= 'F')digital = digital - 'A' + 10;else if(digital >= 'a' && digital <= '

36、;f')digital = digital - 'a' + 10;else if(digital >= '0' && digital <= '9')digital = digital - '0'address = address*16 +digital;return address;/* 發(fā)送數(shù)據(jù)*/task void sendData()uint8_t i;uint8_t* payload = call Packet.getPayload(&m_msg, NULL);uint16_t

37、address = call AMPacket.address();uint16_t dest_address = getDestAddress();ADBG_APP( "rnrn* Sending . from %d, to %d, len=%drn",ADBG_N(address),ADBG_N(dest_address),ADBG_N(m_len);call AMSend.send(dest_address, &m_msg, m_len);/LED_BLUE_TOGGLE;task void sendData1()/* 節(jié)點(diǎn)1發(fā)送數(shù)據(jù)*/uint8_t i;u

38、int8_t* payload = call Packet.getPayload(&m_msg, NULL);uint16_t address = call AMPacket.address();uint16_t dest_address = 03;/目的地址為3ADBG_APP( "rnrn* Sending . from %d, to %d, len=%drn",ADBG_N(address),ADBG_N(dest_address),ADBG_N(m_len);call AMSend.send(dest_address, &m_msg, m_len);

39、/LED_BLUE_TOGGLE;/*發(fā)送完處理*/event void AMSend.sendDone(message_t* msg, error_t result)/ADBG_APP( "send donen");ADBG_APP( "* Sent%s!rn", (result = SUCCESS) ? "OK" : "FAIL");if (result = SUCCESS)LED_BLUE_TOGGLE;elseLED_YELLOW_TOGGLE;m_len = 0;m_input_type = INPUT_

40、ADDRESS;post showMenu();/* 節(jié)點(diǎn)啟動(dòng)完畢*/event void Boot.booted()/*開(kāi)啟射頻*/call AtosControl.start();/*開(kāi)啟串口通信*/call UartStdControl.start();LED_YELLOW_OFF;LED_BLUE_OFF;ADBG_APP( "rn#rn");ADBG_APP( " P2PDEMO My Address = 0x%x, Group = 0x%xrn", ADBG_N(call AMPacket.address(), ADBG_N(TOS_IEEE

41、_PANID);ADBG_APP( "#rn");m_input_type = INPUT_ADDRESS;post showMenu();/*從串口接收數(shù)據(jù)*/async event void UartStream.receivedByte(uint8_t c)if(c != 'r')if (m_input_type = INPUT_DATA)/*輸入數(shù)據(jù)*/uint8_t* payload = (uint8_t*)call Packet.getPayload(&m_msg, NULL);if(m_len >= call Packet.max

42、PayloadLength()return;payloadm_len+ = c;ADBG_APP( "%c", c);if(m_len < call Packet.maxPayloadLength()return;else/*輸入地址*/if(m_address_index < MAX_ADDRESS_LEN)m_address_strm_address_index+ = c;ADBG_APP( "%c", c);if(m_address_index < MAX_ADDRESS_LEN)return;/*按下回車鍵或者到達(dá)最大長(zhǎng)度，則處

43、理*/if(m_input_type = INPUT_DATA)post sendData();else/*地址處理完畢，準(zhǔn)備輸入數(shù)據(jù)*/m_input_type = INPUT_DATA;post showMenu();/* 實(shí)現(xiàn)接口UartStream 接口中的事件*/async event void UartStream.sendDone(uint8_t* buf, uint16_t len, error_t error)async event void UartStream.receiveDone(uint8_t* buf, uint16_t len, error_t error)/*

44、射頻接收數(shù)據(jù)*/event message_t* Receive.receive(message_t* msg, void* payload, uint8_t len)uint8_t i;call Timer1.startPeriodic(1000);ADBG_APP( "rn*Receive, len = %d, DATA:rn", ADBG_N(len);for(i=0; i < len; i+)ADBG_APP( "%c", (uint8_t*)payload)i);ADBG_APP( "rn");LED_YELLOW_T

45、OGGLE;m_input_type = INPUT_ADDRESS;/*定時(shí)器事件處理函數(shù)*/event void Timer1.fired() /定時(shí)器結(jié)束后執(zhí)行post sendData1();/給節(jié)點(diǎn)2發(fā)送數(shù)據(jù)call Timer1.stop();1.4 實(shí)驗(yàn)截圖1.5 實(shí)驗(yàn)心得通過(guò)這次實(shí)驗(yàn)，對(duì)點(diǎn)對(duì)點(diǎn)的原理有了大致的了解，同時(shí)也更加深刻了我對(duì)這門課的認(rèn)識(shí)，鞏固了我的理論知識(shí)。對(duì)于延時(shí)發(fā)送可以通過(guò)定時(shí)器來(lái)實(shí)現(xiàn)也更為熟悉。實(shí)驗(yàn)七 射頻廣播1.1 實(shí)驗(yàn)要求寫一個(gè)射頻廣播實(shí)驗(yàn)，包括基站和兩個(gè)節(jié)點(diǎn)的程序。使得兩個(gè)節(jié)點(diǎn)在接收到基站的三個(gè)廣播信號(hào)停止接收廣播數(shù)據(jù)。1.2 實(shí)驗(yàn)思路添加全局變量，每次廣

46、播成功變量自減一次，判斷是否為0，為0時(shí)停止廣播。1.3 實(shí)驗(yàn)關(guān)鍵代碼#define DBG_LEV 1000module BroadcastPuses interface Boot;interface AtosControl;interface AMSend;interface Receive;interface AMPacket;interface Packet;interface Timer<TMilli> as SensorTimer;implementationmessage_t m_msg;int i = 3;/定義控制廣播次數(shù)的參數(shù)/* 發(fā)送數(shù)據(jù)*/task void

47、 sendData()uint16_t m_len = 0x00;uint8_t* payload = call Packet.getPayload(&m_msg, NULL);uint16_t address = call AMPacket.address();*payload = 0x01;m_len = 0x01;if (address = 0x01)call AMSend.send(0xFFFF, &m_msg, m_len);LED_BLUE_TOGGLE;/*發(fā)送完處理*/event void AMSend.sendDone(message_t* msg, erro

48、r_t success)/* 節(jié)點(diǎn)啟動(dòng)完畢*/event void Boot.booted()/*開(kāi)啟射頻*/call AtosControl.start();LED_YELLOW_ON;LED_BLUE_ON;call SensorTimer.startPeriodic(1000);event void SensorTimer.fired()post sendData();/*射頻接收數(shù)據(jù)*/event message_t* Receive.receive(message_t* msg, void* payload, uint8_t len)LED_BLUE_TOGGLE;i = i - 1;if(i=0) call AtosControl.stop();/每次廣播完成后自減1，減到0時(shí)停止廣播1.4 實(shí)驗(yàn)心得通過(guò)這次實(shí)驗(yàn)，對(duì)射頻廣播的原理有了大致的