我在两个telosb之间有一个程序通信。这是tinyos的一个例子：https://github.com/tinyos/tinyos-release/tree/tinyos-2_1_2/apps/RadioCountToLeds。此代码将发送和接收值计数，如果条件满足，它将打开相应的led。我想将代码分为两部分：发送和接收。我创建了2个应用程序： 接收：
//RadioCountToLedC.nc
#include "Timer.h"
#include "RadioCountToLeds.h"
module RadioCountToLedsC @safe() {
uses {
interface Leds;
interface Boot;
interface AMSend;
interface Timer<TMilli> as MilliTimer;
interface SplitControl as AMControl;
interface Packet;
}
}
implementation {
message_t packet;
bool locked;
uint16_t counter = 0;
event void Boot.booted() {
call MilliTimer.startPeriodic(250);
call AMControl.start();
}
event void AMControl.startDone(error_t err) {
if (err == SUCCESS) {
call MilliTimer.startPeriodic(250);
}
else {
call AMControl.start();
}
}
event void AMControl.stopDone(error_t err) {
// do nothing
}
event void MilliTimer.fired() {
if(counter<100){
counter++;
}else{
counter=0;
}
dbg("RadioCountToLedsC", "RadioCountToLedsC: timer fired, counter is %hu.\n", counter);
if (locked) {
return;
}
else {
radio_count_msg_t* rcm = (radio_count_msg_t*)call Packet.getPayload(&packet, sizeof(radio_count_msg_t));
if (rcm == NULL) {
return;
}
rcm->counter = counter;
if (call AMSend.send(AM_BROADCAST_ADDR, &packet, sizeof(radio_count_msg_t)) == SUCCESS) {
dbg("RadioCountToLedsC", "RadioCountToLedsC: packet sent.\n", counter);
locked = TRUE;
}
}
}
event void AMSend.sendDone(message_t* bufPtr, error_t error) {
if (&packet == bufPtr) {
locked = FALSE;
}
}
}
//RadioToLedAppC.nc
#include "RadioCountToLeds.h"
configuration RadioCountToLedsAppC {}
implementation {
components MainC, RadioCountToLedsC as App, LedsC;
components new AMSenderC(AM_RADIO_COUNT_MSG);
components new AMReceiverC(AM_RADIO_COUNT_MSG);
components new TimerMilliC();
components ActiveMessageC;
App.Boot -> MainC.Boot;
App.AMSend -> AMSenderC;
App.AMControl -> ActiveMessageC;
App.Leds -> LedsC;
App.MilliTimer -> TimerMilliC;
App.Packet -> AMSenderC;
}
发送：
#ifndef RADIO_COUNT_TO_LEDS_H
#define RADIO_COUNT_TO_LEDS_H
typedef nx_struct radio_count_msg {
nx_uint16_t counter;
} radio_count_msg_t;
enum {
AM_RADIO_COUNT_MSG = 6,
};
#endif
RadioCountToLed.h
import java.util.*;
import java.util.Scanner;
public class BirthdayReminder
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
String birth[] = new String[10];
String names[] = new String[10];
String a[] = new String[100];
for(int i=0; i<10; i++)
{
System.out.println("Enter name");
names[i]= input.nextLine();
if(names[i].equals("ZZZ"))
{
System.out.println(i);
System.out.println(Arrays.toString(names));
break;
}
else if(i==10)
{
System.out.println(i+1);
System.out.println(Arrays.toString(names));
for(int j=0;j>0;j++)
break;
}
else
{
System.out.println("Enter Birthday");
birth[i]= input.nextLine();
System.out.println(names[i]);
}
}
for(int j=0;j<10;j++){
System.out.println("Enter name to get their Birthday");
input = new Scanner(System.in);
a[j]= input.nextLine();
boolean valid = false;
for(int k=0; k<10;k++){
if(a[j].equals(names[k])){
System.out.println(birth[k]);
valid = true;
}else if (k == 9 && !valid){
System.out.println("Name not found");
}
}
}
}
}
但是当我跑步它不起作用。如果我在同一个文件RadioCountToLedC.nc中写入Receive和Send，如上例所示。它会运作良好。我的申请有什么问题？
答案 0 :(得分：0)
我认为你需要
call AMControl.start();
在Receiver的启动功能中。这将打开收音机并允许您接收信息。
PS如果这不能完全解决您的问题，请提供有关您在跑步时发生的事情的详细信息。
答案 1 :(得分：0)
有许多简单的方法可以解决此问题，最简单的方法是仅具有一个控制程序流的变量，或者使用每个节点TinyOS ID来控制流。
例如，您可以（仅进行了4个小更改）：
#include "Timer.h"
#include "RadioCountToLeds.h"
/**
* Implementation of the RadioCountToLeds application. RadioCountToLeds
* maintains a 4Hz counter, broadcasting its value in an AM packet
* every time it gets updated. A RadioCountToLeds node that hears a counter
* displays the bottom three bits on its LEDs. This application is a useful
* test to show that basic AM communication and timers work.
*
* @author Philip Levis
* @date June 6 2005
*/
module RadioCountToLedsC @safe() {
uses {
interface Leds;
interface Boot;
interface Receive;
interface AMSend;
interface Timer<TMilli> as MilliTimer;
interface SplitControl as AMControl;
interface Packet;
}
}
implementation {
message_t packet;
bool locked;
uint16_t counter = 0;
enum state {TX, RX} mode; //Change 1: Define States
event void Boot.booted() {
call AMControl.start();
mode = RX; // CHANGE 2: Set States - "RX" for receiver & "TX" for transmitter
}
event void AMControl.startDone(error_t err) {
if (err == SUCCESS) {
if(mode == TX) //CHANGE 3: Only the transmitter sends
call MilliTimer.startPeriodic(250);
}
else {
call AMControl.start();
}
}
event void AMControl.stopDone(error_t err) {
// do nothing
}
event void MilliTimer.fired() {
counter++;
dbg("RadioCountToLedsC", "RadioCountToLedsC: timer fired, counter is %hu.\n", counter);
if (locked) {
return;
}
else {
radio_count_msg_t* rcm = (radio_count_msg_t*)call Packet.getPayload(&packet, sizeof(radio_count_msg_t));
if (rcm == NULL) {
return;
}
rcm->counter = counter;
if (call AMSend.send(AM_BROADCAST_ADDR, &packet, sizeof(radio_count_msg_t)) == SUCCESS) {
dbg("RadioCountToLedsC", "RadioCountToLedsC: packet sent.\n", counter);
locked = TRUE;
}
}
}
event message_t* Receive.receive(message_t* bufPtr,
void* payload, uint8_t len) {
dbg("RadioCountToLedsC", "Received packet of length %hhu.\n", len);
if(mode == TX) return bufPtr; //CHANGE 4: Only RX processes packets
if (len != sizeof(radio_count_msg_t)) {return bufPtr;}
else {
radio_count_msg_t* rcm = (radio_count_msg_t*)payload;
if (rcm->counter & 0x1) {
call Leds.led0On();
}
else {
call Leds.led0Off();
}
if (rcm->counter & 0x2) {
call Leds.led1On();
}
else {
call Leds.led1Off();
}
if (rcm->counter & 0x4) {
call Leds.led2On();
}
else {
call Leds.led2Off();
}
return bufPtr;
}
}
event void AMSend.sendDone(message_t* bufPtr, error_t error) {
if (&packet == bufPtr) {
locked = FALSE;
}
}
}
如果您愿意，也可以使用C预处理程序来设置mode变量，而不是在Booted事件中设置模式。
您创建的接收器应用程序的问题是它
i）因为在AMControl.start()事件中没有调用Boot.Booted()，所以不启动收发器。
ii）RadioCountToLedsAppC中的接线不正确，因为未连接任何接口。您需要连接所有接口（引导，指示灯，接收和AMControl）。类似于您在发送者中连接它们的方式。