串口通信

来源：互联网发布：linux ping 测试编辑：程序博客网时间：2024/06/04 05:00

http://blog.csdn.net/tianruxishui/article/details/37592903#comments

1. 本地类TtyNativeControl

package com.notioni.uart.manager;

import Java.lang.ref.WeakReference;

import Android.os.Handler;

import android.os.Looper;

import android.os.Message;

import android.util.Log;

/**

* 本地方法类

public class TtyNativeControl {

private final static String TAG = "TtyNativeControl";

static{

System.loadLibrary("uart_ctl");

}

private static final int TTY_MSG_RECEIVE = 1;

private static final int TTY_CLOSE_DEVICE = TTY_MSG_RECEIVE+1;

private EventHandler mEventHandler;

private ReceiveCallback mReceiveCallBack;

TtyNativeControl(){

mReceiveCallBack = null;

Looper looper;

if((looper = Looper.myLooper()) != null){

mEventHandler = new EventHandler(this, looper);

}else if((looper = Looper.getMainLooper()) != null){

mEventHandler = new EventHandler(this, looper);

}else{

mEventHandler = null;

}

native_setup(new WeakReference<TtyNativeControl>(this));

}

/**

* 打开驱动

* @return 是否打开成功

public int openTty(){

return _openTty();

}

/**

* 关闭驱动，需要一定时间，所以采用Handler机制

public int closeTty(){

// mEventHandler.obtainMessage(TTY_CLOSE_DEVICE).sendToTarget();

// return 1;

return _closeTty();

}

/**

* 发送数据

* @param data

* @return

public int sendMsgToTty(byte[] data){

return _sendMsgToTty(data);

}

/**

* 接收数据

* @param callback

public final void receiveMsgFromTty(ReceiveCallback callback){

mReceiveCallBack = callback;

_receiveMsgFromTty();

}

/**

* 设置串口数据位，校验位,速率，停止位

* @param databits 数据位取值位7或8

* @param event 校验类型取值N ,E, O,

* @param speed 速率取值 2400,4800,9600,115200

* @param stopBit 停止位取值1 或者 2

public int configTty(int databits,char event,int speed,int stopBit){

return _configTty(databits, event, speed, stopBit);

}

/**

* @param mode 是否使用原始模式(Raw Mode)方式来通讯取值0,1,2 说明：0=nothing,1=Raw mode,2=no raw mode

* @param showLog 打印出串口信息Log 取值1,0

public int setMode(int mode ,int showLog){

return _setMode(mode, showLog);

}

/**

* 接收数据回调接口

public interface ReceiveCallback{

void onReceiveData(byte[] data,TtyNativeControl tty);

}

/****************************************************************

* 本地方法

private native final void native_setup(Object tty_this);

private native int _openTty();

private native int _closeTty();

private native int _sendMsgToTty(byte[] data);

private native void _receiveMsgFromTty();

private native int _configTty(int databits,char event,int speed,intstopBit);

private native int _setMode(int mode,int showLog);

* 实现底层回调

private static void postEventFromNative(Object tty_ref,int what ,intarg1,intarg2,Object obj){

Log.i(TAG, "[postEventFromNative] what:"+what);

TtyNativeControl t = (TtyNativeControl)((WeakReference)tty_ref).get();

if(t == null)return;

if(t.mEventHandler != null){

Message m = t.mEventHandler.obtainMessage(what, arg1, arg2,obj);

t.mEventHandler.sendMessage(m);

}

private class EventHandler extends Handler{

private TtyNativeControl mTty;

public EventHandler(TtyNativeControl t,Looper looper){

super(looper);

mTty = t;

}

@Override

public void handleMessage(Message msg) {

switch(msg.what){

case TTY_MSG_RECEIVE://底层接收数据回调上来的事件

if(mReceiveCallBack != null){

mReceiveCallBack.onReceiveData((byte[])msg.obj,mTty);

}

return;

case TTY_CLOSE_DEVICE://关闭驱动

_closeTty();

break;

}

2. JNI类头文件

#include <jni.h>

#ifndef _Included_com_notioni_uart_manager_TtyNativeControl

#define _Included_com_notioni_uart_manager_TtyNativeControl

#ifdef __cplusplus

extern "C"{

#endif

/**

* Class com_notioni_uart_TtyNativeControl

* Method

JNIEXPORT static void JNICALL com_notioni_uart_manager_TtyNativeControl_native_setup(JNIEnv *env,jobject clazz,jobject weak_this);

JNIEXPORT static int JNICALL com_notioni_uart_manager_TtyNativeControl__openTty(JNIEnv *env,jobject clazz);

JNIEXPORT static int JNICALL com_notioni_uart_manager_TtyNativeControl__closeTty(JNIEnv *env,jobject clazz);

JNIEXPORT static int JNICALL com_notioni_uart_manager_TtyNativeControl__sendMsgToTty(JNIEnv *env,jobject clazz,jbyteArray data);

JNIEXPORT static void JNICALL com_notioni_uart_manager_TtyNativeControl__receiveMsgFromTty(JNIEnv *env,jobject clazz);

JNIEXPORT static int JNICALL com_notioni_uart_manager_TtyNativeControl__configTty(JNIEnv *env,jobject clazz,int nBits,jchar nEvent,int nSpeed,int nStop);

JNIEXPORT static int JNICALL com_notioni_uart_manager_TtyNativeControl__setMode(JNIEnv *env,jobject clazz,int nMode,int showLog);

//JNIEXPORT int JNICALL com_notioni_uart_manager_TtyNativeControl__setSpeed(JNIEnv *env,jobjectclazz,int speed);

//JNIEXPORT int JNICALL com_notioni_uart_manager_TtyNativeControl__setParity(JNIEnv *env,jobjectclazz,int databits,int stopbits,int parity);

#ifdef __cplusplus

}

#endif

3. JNI实现类

#include "JNIHelp.h"

#include "android_runtime/AndroidRuntime.h"

#include <utils/misc.h>

#include <utils/Log.h>

#include <utils/threads.h>

#include <pthread.h>

#include <stdio.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <string.h>

#include <utils/Log.h>

#include <sys/ioctl.h>

#include <termios.h>

#include "com_notioni_uart_manager_TtyNativeControl.h"

using namespace android;

struct fields_t{

jfieldID tty;

jmethodID post_event;

};

static fields_t fields;

JavaVM* g_JavaVM;

#define TTY_DEVICE "/dev/ttyS2"

#define LOG_TAG "TtyNativeControl"

#define RECEIVE_DATA_INDEX (1)

#define POST_EVENT()

static int mTtyfd = -1;

static int mOpen = 0;

/**

* class Listener

class JNIMyObserver{

public:

JNIMyObserver(JNIEnv* env,jobject thiz,jobject weak_thiz);

~JNIMyObserver();

void OnEvent(const char* buffer,int length,int what);

private:

JNIMyObserver();

jclass mClass;

jobject mObject;

Mutex mLock;

};

JNIMyObserver::JNIMyObserver(JNIEnv* env,jobject thiz,jobject weak_thiz){

jclass clazz = env->GetObjectClass(thiz);

if(clazz == NULL){

// jniThrowException(env,"java/lang/Exception",NULL);

LOGE("clazz is null");

return;

}

mClass = (jclass)env->NewGlobalRef(clazz);

mObject = env->NewGlobalRef(weak_thiz);

LOGW("mClass=%d",mClass);

LOGW("mObject=%d",mObject);

}

JNIMyObserver::~JNIMyObserver(){

JNIEnv *env = AndroidRuntime::getJNIEnv();

env->DeleteGlobalRef(mObject);

env->DeleteGlobalRef(mClass);

}

void JNIMyObserver::OnEvent(const char* buffer,int length,int what){

LOGW("OnEvent");

Mutex::Autolock _l(mLock);

if(NULL == g_JavaVM){

LOGE("JNIObserver::Event g_JavaVM is NULL");

return;

}

bool isAttacked = false;

* 创建env指针

JNIEnv* env;

bool status = (g_JavaVM->GetEnv((void**) &env,JNI_VERSION_1_4) != JNI_OK);

if(status){

g_JavaVM->AttachCurrentThread(&env,NULL);

}

* 创建Java byte[]数组

jbyteArray obj = NULL;

if(buffer !=NULL && buffer != 0){

const jbyte* data = reinterpret_cast<const jbyte*>(buffer);

obj = env->NewByteArray(length);

env->SetByteArrayRegion(obj,0,length,data);

}

env->CallStaticVoidMethod(mClass,fields.post_event,mObject,what,0,0,obj);

if(obj){

env->DeleteLocalRef(obj);

}

if(isAttacked){

g_JavaVM->DetachCurrentThread();//分离线程

}

/**

* class Listener end -----------------

JNIMyObserver* listener;

* setup

static void JNICALL com_notioni_uart_manager_TtyNativeControl_native_setup(JNIEnv *env,jobject clazz,jobject weak_this){

LOGW("com_notioni_uart_manager_TtyNativeControl_native_setup");

env->GetJavaVM(&g_JavaVM);

if(listener != NULL){

delete listener;

}

listener = new JNIMyObserver(env,clazz,weak_this);

}

* _openTty

static int JNICALL com_notioni_uart_manager_TtyNativeControl__openTty(JNIEnv *env,jobject clazz){

LOGW("com_notioni_uart_manager_TtyNativeControl__openTty");

mTtyfd = open(TTY_DEVICE,O_RDWR|O_NONBLOCK);//读写方式

if(mTtyfd < 0){

LOGE("mTtyfd open failure");

return -1;

}

if(fcntl(mTtyfd,F_SETFL,0)<0){//恢复串口为堵塞状态

LOGE("mTtyfd fcntl failure");

}

// if(isatty(STDIN_FILENO)==0){//测试是否为中断设备，非0即使终端设备

// LOGE("standard inputs is not a terminal device");

// }else{

// LOGE("isatty success");

// }

mOpen = 1;

LOGW("open device success");

return 1;

}

* _closeTty

static int JNICALL com_notioni_uart_manager_TtyNativeControl__closeTty(JNIEnv *env,jobject clazz){

LOGW("com_notioni_uart_manager_TtyNativeControl__closeTty");

if(mTtyfd < 0){

LOGE("mTtyfd open failure ,non't close");

return -1;

}

mOpen = 0;

sleep(2);//等待线程退出

int c = close(mTtyfd);

if(c < 0){

LOGE("mTtyfd close failure");

return -1;

}

LOGW("close device success");

return 1;

}

* _sendMsgToTty

static int JNICALL com_notioni_uart_manager_TtyNativeControl__sendMsgToTty(JNIEnv *env,jobject clazz,jbyteArray data){//byte[]

LOGW("com_notioni_uart_manager_TtyNativeControl__sendMsgToTty");

//jbyte * arrayBody = env->GetByteArrayElements(data,0); jsize theArrayLengthJ = env->GetArrayLength(data); BYTE * starter = (BYTE *)arrayBody;

if(mTtyfd < 0){

LOGE("mTtyfd open failure ,non't write");

return -1;

}

jbyte* arrayData = (jbyte*)env->GetByteArrayElements(data,0);

jsize arrayLength = env->GetArrayLength(data);

char* byteData = (char*)arrayData;

int len = (int)arrayLength;

LOGW("write data len:%d",len);

int re = write(mTtyfd,byteData,len);

if(re == -1){

LOGE("write device error");

}

return re;

}

* 线程Run

void* threadreadTtyData(void* arg){

LOGW("run read data");

if(!(arg)){

return NULL;

}

char* buf = new char[200];

int result = 0,ret;

fd_set readfd;

struct timeval timeout;

while(mOpen){

timeout.tv_sec = 2;//设定超时秒数

timeout.tv_usec = 0;//设定超时毫秒数

FD_ZERO(&readfd);//清空集合

FD_SET(mTtyfd,&readfd);///* 把要检测的句柄mTtyfd加入到集合里 */

ret = select(mTtyfd+1,&readfd,NULL,NULL,&timeout);/* 检测我们上面设置到集合readfd里的句柄是否有可读信息 */

switch(ret){

case -1:/* 这说明select函数出错 */

result = -1;

LOGE("mTtyfd read failure");

break;

case 0:/* 说明在我们设定的时间值5秒加0毫秒的时间内，mTty的状态没有发生变化 */

break;

default:/* 说明等待时间还未到5秒加0毫秒，mTty的状态发生了变化 */

if(FD_ISSET(mTtyfd,&readfd)){/* 先判断一下mTty这外被监视的句柄是否真的变成可读的了 */

int len = read(mTtyfd,buf,sizeof(buf));

/**发送数据**/

if(!(arg))break;

JNIMyObserver *l = static_cast<JNIMyObserver *>(arg);

l->OnEvent(buf,len,RECEIVE_DATA_INDEX);

memset(buf,0,sizeof(buf));

}

break;

}

if(result == -1){

break;

}

if(buf != NULL){

delete buf;

buf = NULL;

}

LOGE("stop run!");

return NULL;

}

* _receiveMsgFromTty

static void JNICALL com_notioni_uart_manager_TtyNativeControl__receiveMsgFromTty(JNIEnv *env,jobject clazz){

LOGW("com_notioni_uart_manager_TtyNativeControl__receiveMsgFromTty");

if(mTtyfd < 0){

LOGE("mTtyfd open failure ,non't read");

return ;

}

pthread_t id;

int ret;

ret = pthread_create(&id,NULL,threadreadTtyData,listener);

if(ret != 0){

LOGE("create receiver thread failure ");

}else{

LOGW("create read data thred success");

}

/**

* 设置串口数据，校验位,速率，停止位

* @param nBits 类型 int数据位取值位7或8

* @param nEvent 类型 char 校验类型取值N ,E, O,,S

* @param mSpeed 类型 int 速率取值 2400,4800,9600,115200

* @param mStop 类型 int 停止位取值1 或者 2

int set_opt(int nBits,char nEvent,int nSpeed,int nStop){

LOGW("set_opt:nBits=%d,nEvent=%c,nSpeed=%d,nStop=%d",nBits,nEvent,nSpeed,nStop);

struct termios newtio,oldtio;

if(tcgetattr(mTtyfd,&oldtio) != 0){

LOGE("setup serial failure");

return -1;

}

bzero(&newtio,sizeof(newtio));

//c_cflag标志可以定义CLOCAL和CREAD，这将确保该程序不被其他端口控制和信号干扰，同时串口驱动将读取进入的数据。CLOCAL和CREAD通常总是被是能的

newtio.c_cflag |=CLOCAL|CREAD;

//newtio.c_cflag &=~CSIZE;

switch(nBits){//设置数据位数

case 7:

newtio.c_cflag &=~CSIZE;

newtio.c_cflag |=CS7;

break;

case 8:

newtio.c_cflag &=~CSIZE;

newtio.c_cflag |=CS8;

break;

default:

LOGW("nBits:%d,invalid param",nBits);

break;

}

switch(nEvent){//设置校验位

case 'O':

newtio.c_cflag |=PARENB;//enable parity checking

newtio.c_cflag |=PARODD;//奇校验位

newtio.c_iflag |=(INPCK|ISTRIP);

//options.c_iflag |= INPCK;//Disable parity checking

break;

case 'E':

newtio.c_cflag|=PARENB;//

newtio.c_cflag&=~PARODD;//偶校验位

newtio.c_iflag|=(INPCK|ISTRIP);

//options.c_iflag |= INPCK;//Disable parity checking

break;

case 'N':

newtio.c_cflag &=~PARENB;//清除校验位

//options.c_iflag &=~INPCK;//Enable parity checking

break;

//case 'S':

// options.c_cflag &= ~PARENB;//清除校验位

// options.c_cflag &=~CSTOPB;

// options.c_iflag |=INPCK;//Disable parity checking

// break;

default:

LOGW("nEvent:%c,invalid param",nEvent);

break;

}

switch(nSpeed){//设置速率

case 2400:

LOGW("B2400:%d",B2400);

cfsetispeed(&newtio,B2400);

cfsetospeed(&newtio,B2400);

break;

case 4800:

LOGW("B4800:%d",B4800);

cfsetispeed(&newtio,B4800);

cfsetospeed(&newtio,B4800);

break;

case 9600:

LOGW("B9600:%d",B9600);

cfsetispeed(&newtio,B9600);

cfsetospeed(&newtio,B9600);

break;

case 115200:

LOGW("B115200:%d",B115200);

cfsetispeed(&newtio,B115200);

cfsetospeed(&newtio,B115200);

break;

default:

cfsetispeed(&newtio,B9600);

cfsetospeed(&newtio,B9600);

LOGW("nSpeed:%d,invalid param",nSpeed);

break;

}

switch(nStop){//设置停止位

case 1:

newtio.c_cflag &= ~CSTOPB;

break;

case 2:

newtio.c_cflag |= CSTOPB;

break;

default:

LOGW("nStop:%d,invalid param",nStop);

break;

}

newtio.c_cc[VTIME] = 0;//设置等待时间

newtio.c_cc[VMIN] = 0;//设置最小接收字符

tcflush(mTtyfd,TCIFLUSH);

if(tcsetattr(mTtyfd,TCSANOW,&newtio) != 0){

LOGE("options set error");

return -1;

}

return 1;

}

* _configTty

static int JNICALL com_notioni_uart_manager_TtyNativeControl__configTty(JNIEnv *env,jobject clazz,int nBits,jchar nEvent,int nSpeed,int nStop){

LOGW("com_notioni_uart_manager_TtyNativeControl__configTty");

return set_opt(nBits,nEvent,nSpeed,nStop);

}

int set_mode(int nMode,int showLog){

LOGW("set_mode:nMode%d,nshowLog=%d",nMode,showLog);

struct termios options;

if(tcgetattr(mTtyfd,&options) != 0){

LOGE("setup serial failure");

return -1;

}

int result = 1;

if(nMode != 0){

if(nMode ==1){

options.c_lflag &=~(ICANON | ECHO | ECHOE | ISIG);//input

options.c_oflag &=~OPOST;//out put

}else if(nMode == 2){

options.c_lflag |=(ICANON | ECHO | ECHOE | ISIG);//input

options.c_oflag |=OPOST;//out put

}

if(tcsetattr(mTtyfd,TCSANOW,&options) != 0){

LOGE("tcsetattr device fail");

result = -1;

}

if(showLog == 1){

LOGI("options c_cflag.CS7:%d,CS8:%d",options.c_cflag & CS7,options.c_cflag & CS8);

LOGI("options c_cflag.PARENB:%d,PARODD:%d",options.c_cflag & PARENB,options.c_cflag & PARODD);

LOGI("options c_iflag.INPCK%d,ISTRIP:%d",options.c_iflag & INPCK,options.c_iflag & ISTRIP);

LOGI("option c_ispeed:%d,c_ospeed:%d",cfgetispeed(&options) ,cfgetospeed(&options));

LOGI("options c_cflag.CSTOPB:%d,",options.c_cflag & CSTOPB);

LOGI("options c_cc.VTIME:%d,VMIN:%d",options.c_cc[VTIME],options.c_cc[VMIN]);

LOGI("options c_cflag.CLOCAL:%d,CREAD:%d",options.c_cflag & CLOCAL,options.c_cflag&CREAD);

LOGI("options c_lflag.ICANON:%d,ECHO:%d,ECHOE:%d,ISIG:%d",options.c_lflag & ICANON,options.c_lflag&ECHO,options.c_lflag&ECHOE,options.c_lflag&ISIG);

LOGI("options c_oflag.OPOST:%d,",options.c_oflag &OPOST);

}

return result;

}

static int JNICALL com_notioni_uart_manager_TtyNativeControl__setMode(JNIEnv *env,jobject clazz,int nMode,int showLog){

LOGW("com_notioni_uart_manager_TtyNativeControl__setMode");

return set_mode(nMode,showLog);

}

static JNINativeMethod method_table[] = {

{"native_setup","(Ljava/lang/Object;)V",(void*)com_notioni_uart_manager_TtyNativeControl_native_setup},

{"_openTty","()I",(void*)com_notioni_uart_manager_TtyNativeControl__openTty},

{"_closeTty","()I",(void*)com_notioni_uart_manager_TtyNativeControl__closeTty},

{"_sendMsgToTty","([B)I",(void*)com_notioni_uart_manager_TtyNativeControl__sendMsgToTty},

{"_receiveMsgFromTty","()V",(void*)com_notioni_uart_manager_TtyNativeControl__receiveMsgFromTty},

{"_configTty","(ICII)I",(void*)com_notioni_uart_manager_TtyNativeControl__configTty},

{"_setMode","(II)I",(void*)com_notioni_uart_manager_TtyNativeControl__setMode},

};

static const char* classPathName="com/notioni/uart/manager/TtyNativeControl";

static int register_com_notioni_uart_manager_TtyNativeControl(JNIEnv *env){

LOGW("register_com_notioni_uart_manager_TtyNativeControl");

jclass clazz;

clazz = env->FindClass(classPathName);

if(clazz == NULL){

return -1;

}

fields.post_event = env->GetStaticMethodID(clazz,"postEventFromNative",

"(Ljava/lang/Object;IIILjava/lang/Object;)V");

if(fields.post_event == NULL){

LOGE("Can't find com/notioni/uart/manager.postEventFromNative");

return -1;

}

returnAndroidRuntime::registerNativeMethods(env,classPathName,method_table,NELEM(method_table));

}

jint JNI_OnLoad(JavaVM* vm,void* reserved){

LOGW("JNI_OnLoad");

JNIEnv* env = NULL;

jint result = -1;

if(vm->GetEnv((void**)&env,JNI_VERSION_1_4) != JNI_OK){

goto bail;

}

LOGW("register mothod");

assert(env != NULL);

if(register_com_notioni_uart_manager_TtyNativeControl(env) < 0){

goto bail;

}

return JNI_VERSION_1_4;

bail:

return result;

}

4. JAVA层封装本地方法

package com.notioni.uart.manager;

import com.notioni.uart.manager.TtyNativeControl.ReceiveCallback;

* 单例模式

public class UARTCTLManager {

private TtyNativeControl mTtyControl;

private boolean mIsOpen = false;

private static UARTCTLManager mManager;

private UARTCTLManager(){

mTtyControl = new TtyNativeControl();

}

public static UARTCTLManager getInstance(){

if(mManager == null){

mManager = new UARTCTLManager();

}

return mManager;

}

* 打开驱动

public int openDevice(){

int o = mTtyControl.openTty();

o=1;

if(o == 1){

mIsOpen = true;

}

return o;

}

* 关闭驱动

public int closeDevice(){

int c = mTtyControl.closeTty();

if(c == 1){

mIsOpen = false;

}

return c;

}

* 判断驱动是否打开

public boolean isOpenDevice(){

return mIsOpen;

}

* 发送数据

public int sendDataToDevice(byte[] data){

return mTtyControl.sendMsgToTty(data);

}

* 注入接收数据回调方法

public void receiveDataFromDevice(ReceiveCallback callback){

mTtyControl.receiveMsgFromTty(callback);

}

/**

* 设置串口数据位，校验位,速率，停止位

* @param databits 数据位取值位7或8

* @param event 校验类型取值N ,E, O,,S

* @param speed 速率取值 2400,4800,9600,115200

* @param stopBit 停止位取值1 或者 2

public int configDevice(int databits,char event,int speed,int stopBit){

if(!mIsOpen){

return -1;

}

int re = mTtyControl.configTty(databits, event, speed, stopBit);

return re;

}

/**

* 设置串口通信模式，打印串口信息

* @param mode 是否使用原始模式(Raw Mode)方式来通讯取值0,1,2 说明：0=nothing,1=Raw mode,2=no raw mode

* @param showLog 打印出串口信息Log 取值1,0

* @return

public int setMode(int mode ,int showLog){

return mTtyControl.setMode(mode, showLog);

}

/**

* 接收数据回调接口，接收驱动送到的数据要实现这个回调接口

public interface ReceiveDataCallBack extends ReceiveCallback{

}

5. JAVA调用 Activity

package com.notioni.uart;

import com.notioni.uart.manager.TtyNativeControl;

import com.notioni.uart.manager.UARTCTLManager;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.util.Log;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

public class UARTCTLActivity extends Activity implements View.OnClickListener{

private static final String TAG = "UARTCTLActivity";

private UARTCTLManager mUartctlManager;

private Button mOpenOrCloseBtn;

private Button mSendBtn;

private EditText mSendText;

private TextView mReceiveText;

private ReceiveData mReceiveData;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

mUartctlManager = UARTCTLManager.getInstance();

mReceiveData = new ReceiveData();

mOpenOrCloseBtn = (Button)findViewById(R.id.openOrcloseBtn);

mSendBtn = (Button)findViewById(R.id.sendBtn);

mSendText = (EditText)findViewById(R.id.sendMsg);

mReceiveText = (TextView)findViewById(R.id.receiveMsg);

mOpenOrCloseBtn.setOnClickListener(this);

mSendBtn.setOnClickListener(this);

}

@Override

protected void onResume() {

super.onResume();

}

@Override

public void onClick(View v) {

switch(v.getId()){

case R.id.openOrcloseBtn://打开或关闭驱动

Log.i(TAG, "isOpen:"+mUartctlManager.isOpenDevice());

if(mUartctlManager.isOpenDevice()){

mUartctlManager.closeDevice();

mOpenOrCloseBtn.setText(R.string.open);

}else{

int i =mUartctlManager.openDevice();

Log.i(TAG, "openDevice result:"+i);

mOpenOrCloseBtn.setText(R.string.close);

mUartctlManager.setMode(1, 1);//查看串口配置信息

}

break;

case R.id.sendBtn:

openDevice();

int re = mUartctlManager.sendDataToDevice(getSendText());

Log.i(TAG, "send result:"+re);

break;

}

* 打开驱动

private void openDevice(){

if(!mUartctlManager.isOpenDevice()){

mUartctlManager.openDevice();

mUartctlManager.receiveDataFromDevice(mReceiveData);

}

* 关闭驱动

public void closeDevice(){

if(mUartctlManager.isOpenDevice()){

mUartctlManager.closeDevice();

}

* 取出待发送的数据

private byte[] getSendText(){

String st = mSendText.getText().toString()+"\r";

if(st == null || "".equals(st)){

return null;

}

return st.getBytes();

}

* 接收数据

class ReceiveData implements UARTCTLManager.ReceiveDataCallBack{

@Override

public void onReceiveData(byte[] data, TtyNativeControl tty) {

if(mReceiveText != null && data != null){

Log.w(TAG, "[onReceiveData] data:"+data.toString());

mReceiveText.setText(data.toString());

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

menu.add(1,1,0,R.string.config);

return super.onCreateOptionsMenu(menu);

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

super.onOptionsItemSelected(item);

if(item.getItemId() == 1){

Intent intent = new Intent();

intent.setClass(this, ConfigActivity.class);

startActivity(intent);

}

return true;

}

@Override

protected void onPause() {

super.onPause();

// closeDevice();

}

@Override

protected void onDestroy() {

closeDevice();

super.onDestroy();

}

6. JAVA配置串口属性

package com.notioni.uart;

import com.notioni.uart.manager.UARTCTLManager;

import android.os.Bundle;

import android.preference.ListPreference;

import android.preference.Preference;

import android.preference.PreferenceActivity;

import android.preference.PreferenceScreen;

import android.util.Log;

import android.widget.Toast;

public class ConfigActivity extends PreferenceActivityimplementsPreference.OnPreferenceChangeListener{

private static final String TAG = "ConfigActivity";

private static final String KEY_DATABITS = "tty_databits";

private static final String KEY_EVENT = "tty_event";

private static final String KEY_SPEED = "tty_speed";

private static final String KEY_STOPBITS = "tty_stopbits";

ListPreference dataBitsPrefer ;

ListPreference eventPrefer ;

ListPreference speedPrefer ;

ListPreference stopBitsPrefer ;

Object dataBitsValues = null;

Object eventValues = null;

Object speedValues = null;

Object stopbitsValues = null;

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

addPreferencesFromResource(R.xml.config_options);

PreferenceScreen prefSet = getPreferenceScreen();

dataBitsPrefer = (ListPreference)prefSet.findPreference(KEY_DATABITS);

eventPrefer = (ListPreference)prefSet.findPreference(KEY_EVENT);

speedPrefer = (ListPreference)prefSet.findPreference(KEY_SPEED);

stopBitsPrefer = (ListPreference)prefSet.findPreference(KEY_STOPBITS);

dataBitsPrefer.setValueIndex(0);

eventPrefer.setValueIndex(0);

speedPrefer.setValueIndex(0);

stopBitsPrefer.setValueIndex(0);

dataBitsPrefer.setOnPreferenceChangeListener(this);

eventPrefer.setOnPreferenceChangeListener(this);

speedPrefer.setOnPreferenceChangeListener(this);

stopBitsPrefer.setOnPreferenceChangeListener(this);

}

@Override

public boolean onPreferenceChange(Preference preference, Object newValue) {

if(preference == dataBitsPrefer){

dataBitsValues = newValue;

}else if(preference == eventPrefer){

eventValues = newValue;

}else if(preference == speedPrefer){

speedValues = newValue;

}else if(preference == stopBitsPrefer){

stopbitsValues = newValue;

}

Log.i(TAG, "newValue:"+newValue);

return false;

}

@Override

protected void onPause() {

super.onPause();

UARTCTLManager mUartctlManager = UARTCTLManager.getInstance();

int databits=7,speed=9600,stopbits=1;//设置默认值

char event='N';//设置默认值

if(dataBitsValues != null){

databits = Integer.parseInt(dataBitsValues.toString());

}

if(eventValues != null){

event = eventValues.toString().charAt(0);

}

if(speedValues != null){

speed = Integer.parseInt(speedValues.toString());

}

if(stopbitsValues != null){

stopbits = Integer.parseInt(stopbitsValues.toString());

}

if(!mUartctlManager.isOpenDevice()){

mUartctlManager.openDevice();

}

Log.e(TAG,"databit="+databits+",event="+event+",speed="+speed+",stopbits="+stopbits);

if(databits == -1 || speed == -1 || stopbits == -1 || event=='Q'){

Toast.makeText(this, "有参数没有设置，不去配置串口!", Toast.LENGTH_LONG).show();

return;

}

mUartctlManager.configDevice(databits, event, speed, stopbits);

mUartctlManager.setMode(0, 1);//查看串口配置信息

// Log.e(TAG, "databit="+databits+",event="+event+",speed="+speed+",stopbits="+stopbits);

}

7. config_options.xml

<?xml version="1.0" encoding="utf-8"?>

<PreferenceScreen

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:settings="http://schemas.android.com/apk/res/com.android.settings"

android:key="video_call_fallback_setting"

android:title="@string/tty_settings"

android:persistent="false">

<ListPreference

android:key="tty_databits"

android:title="@string/databits"

android:persistent="true"

android:entries="@array/databits_entries"

android:entryValues="@array/databits_values"

android:summary="data bits"/>

<ListPreference

android:key="tty_event"

android:title="@string/event"

android:persistent="true"

android:entries="@array/event_entries"

android:entryValues="@array/event_values"

android:summary="data bits"/>

<ListPreference

android:key="tty_speed"

android:title="@string/speed"

android:persistent="true"

android:entries="@array/speed_entries"

android:entryValues="@array/speed_values"

android:summary="data bits"/>

<ListPreference

android:key="tty_stopbits"

android:title="@string/stopbits"

android:persistent="true"

android:entries="@array/stopbits_entries"

android:entryValues="@array/stopbits_values"

android:summary="data bits"/>

</PreferenceScreen>

8. main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="60dip"

android:orientation="horizontal"

<Button

android:id="@+id/openOrcloseBtn"

android:layout_gravity="center"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/open"

</LinearLayout>

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="60dip"

android:orientation="horizontal"

<EditText

android:id="@+id/sendMsg"

android:layout_gravity="left"

android:layout_width="200dip"

android:layout_height="50dip"

<Button

android:id="@+id/sendBtn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/send"

</LinearLayout>

<LinearLayout

android:layout_width="fill_parent"

android:layout_height="100dip"

android:orientation="horizontal"

<TextView

android:id="@+id/receiveMsg"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/receiveData" />

</LinearLayout>

9. string.xml

<?xml version="1.0" encoding="utf-8"?>

<string name="hello">Hello World, UARTCTLActivity!</string>

<string name="receiveData">Receive data show!</string>

<string name="app_name">UARTCTL</string>

<string name="close">Close</string>

<string name="config">Config</string>

<string name="tty_settings">Settings</string>

<string name="event">Event</string>

<string name="speed">Speed</string>

<string-array name="databits_entries">

</string-array>

<string-array name="databits_values">

</string-array>

<string-array name="event_entries">

<item>Settings</item>

<item>Event</item>

</string-array>

<string-array name="event_values">

</string-array>

<string-array name="speed_entries">

</string-array>

<string-array name="speed_values">

</string-array>

<string-array name="stopbits_entries">

</string-array>

<string-array name="stopbits_values">

</string-array>

</resources>

10. Android.mk

LOCAL_PATH:=$(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := $(call all-java-files-under,src)

#LOCAL_JAVA_LIBRARIES := uart-ctl

LOCAL_JNI_SHARED_LIBRARIES := uart_ctl #so文件打包到apk中

LOCAL_PACKAGE_NAME := UARTCTL

#LOCAL_CERTIFICATE := platform

include $(BUILD_PACKAGE)

include $(LOCAL_PATH)/jni/Android.mk

include $(call all-makefiles-under,$(LOCAL_PATH))

11. jni/Android.mk

LOCAL_PATH:=$(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES:= \

com_notioni_uart_manager_TtyNativeControl.cpp

LOCAL_C_INCLUDES := \

$(JNI_H_INCLUDE)

LOCAL_SHARED_LIBRARIES := \

libcutils \

libutils \

libui \

libandroid_runtime

LOCAL_PRELINK_MODULE := false

LOCAL_MODULE := uart_ctl

include $(BUILD_SHARED_LIBRARY)

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