QT中使用低功耗蓝牙
本代码适用QT for Android (其他平台没有测试，不知道可不可以)
pro文件中添加bluetooth模块
QT +=bluetooth
// 头文件
#includecpp文件
bluetooth::bluetooth(QWidget *parent) :
QWidget(parent),
ui(new Ui::bluetooth)
,m_discoveryAgent(new QBluetoothDeviceDiscoveryAgent())
,m_localDevice(new QBluetoothLocalDevice())
,m_controler(NULL)
,m_bluetoothServer(NULL)
{
ui->setupUi(this);
ui->lineEdit->setEnabled(false);
m_localDevice->hostMode() == QBluetoothLocalDevice::HostDiscoverable;
//ui->checkBox->setCheckable(true);
ui->listWidget->verticalScrollBar()->setStyleSheet("QScrollBar{background:transparent; width: 5px;}"
"QScrollBar::handle{background:lightgray; border:2px solid transparent; border-radius:5px;}"
"QScrollBar::handle:hover{background:green;width:10px}"
"QScrollBar::sub-line{background:transparent;}"
"QScrollBar::add-line{background:transparent;}");
ui->textEditFromClient->verticalScrollBar()->setStyleSheet("QScrollBar{background:transparent; width: 5px;}"
"QScrollBar::handle{background:lightgray; border:2px solid transparent; border-radius:5px;}"
"QScrollBar::handle:hover{background:green;width:10px}"
"QScrollBar::sub-line{background:transparent;}"
"QScrollBar::add-line{background:transparent;}");
ui->textEditFromSever->verticalScrollBar()->setStyleSheet("QScrollBar{background:transparent; width: 5px;}"
"QScrollBar::handle{background:lightgray; border:2px solid transparent; border-radius:5px;}"
"QScrollBar::handle:hover{background:green;width:5px}"
"QScrollBar::sub-line{background:transparent;}"
"QScrollBar::add-line{background:transparent;}");
ui->textEditFromSever_3->verticalScrollBar()->setStyleSheet("QScrollBar{background:transparent; width: 5px;}"
"QScrollBar::handle{background:lightgray; border:2px solid transparent; border-radius:5px;}"
"QScrollBar::handle:hover{background:green;width:10px}"
"QScrollBar::sub-line{background:transparent;}"
"QScrollBar::add-line{background:transparent;}");
ui->listWidget_2->verticalScrollBar()->setStyleSheet("QScrollBar{background:transparent; width: 5px;}"
"QScrollBar::handle{background:lightgray; border:2px solid transparent; border-radius:5px;}"
"QScrollBar::handle:hover{background:green;width:10px}"
"QScrollBar::sub-line{background:transparent;}"
"QScrollBar::add-line{background:transparent;}");
ui->listWidget->horizontalScrollBar()->setStyleSheet("QScrollBar{background:transparent; width: 5px;}"
"QScrollBar::handle{background:lightgray; border:2px solid transparent; border-radius:5px;}"
"QScrollBar::handle:hover{background:green;width:10px}"
"QScrollBar::sub-line{background:transparent;}"
"QScrollBar::add-line{background:transparent;}");
setRadioButtonStyle(ui->changIpBtn, 16, "#D7DBDE", "#1ABC9C");
setRadioButtonStyle(ui->changeYmBtn, 16, "#D7DBDE", "#1ABC9C");
setRadioButtonStyle(ui->changeVolBtn, 16, "#D7DBDE", "#1ABC9C");
// 鉴权
connect(ui->autoMationBtn,&QToolButton::clicked,[=](){
QString autoMationInfo("automation");
QByteArray array = autoMationInfo.toLatin1();
msgSendToServer(array);
});
connect(ui->changIpBtn,&QRadioButton::clicked,[=](){
m_whichChange = 1;
});
connect(ui->changeYmBtn,&QRadioButton::clicked,[=](){
m_whichChange = 2;
});
connect(ui->changeVolBtn,&QRadioButton::clicked,[=](){
m_whichChange = 3;
});
connect(ui->kcCheckBox,&QCheckBox::clicked,[=](bool flag){
QString msg="";
if(flag) // 打开快充
{
msg="fastchargeon";
}
else
{
msg="fastchargeoff";
}
msgSendToServer(msg.toLatin1());
});
connect(ui->buzzCheckBox,&QCheckBox::clicked,[=](bool flag){
QString msg="";
if(flag) // 打开蜂鸣器
{
msg = "buzzeron";
}
else
{
msg = "buzzeroff";
}
msgSendToServer(msg.toLatin1());
});
ui->label_4->hide();
ui->lineEdit->hide();
connect(ui->listWidget_2,&QListWidget::doubleClicked,[=](const QModelIndex &index){
m_whichChars = index.row();
ui->label->setText("当前选中:"+index.data().toString());
});
m_discoveryAgent->setLowEnergyDiscoveryTimeout(20000);
connect(m_discoveryAgent,SIGNAL(deviceDiscovered(QBluetoothDeviceInfo)),
this,SLOT(SlotAddDevicesToList(QBluetoothDeviceInfo)));
//connect(m_discoveryAgent,SIGNAL(sto()),this)
connect(m_discoveryAgent,&QBluetoothDeviceDiscoveryAgent::finished,[=](){
//m_devList = m_discoveryAgent->discoveredDevices();
//addDevIntoList();
});
if(m_socket) // 经典蓝牙才用
{
connect(m_socket,SIGNAL(connected()),this,SLOT(SlotBluetoothConnected()));
connect(m_socket,SIGNAL(disconnected()),this,SLOT(SlotBluetoothDisConnected()));
connect(m_socket,SIGNAL(readyRead()),this,SLOT(SlotBluetoothReadData()));
}
connect(ui->listWidget,SIGNAL(itemDoubleClicked(QListWidgetItem*)),this,SLOT(SlotItemActivated(QListWidgetItem*)));
if( m_localDevice->hostMode() == QBluetoothLocalDevice::HostPoweredOff )
{
ui->openBtn->setEnabled(true);
ui->closeBtn->setEnabled(false);
}
else
{
ui->openBtn->setEnabled(false);
ui->closeBtn->setEnabled(true);
}
QString text = "efefefefefefef";
QByteArray arry = text.toLatin1();
char buf[124];
for(int i = 0;i<arry.size();++i)
{
sprintf(buf,"%02x",arry.at(i));
}
qDebug()<<buf;
}
bluetooth::~bluetooth()
{
delete ui;
if(m_discoveryAgent)
{
delete m_discoveryAgent;
m_discoveryAgent = NULL;
}
if(m_localDevice)
{
delete m_localDevice;
m_localDevice =NULL;
}
if(m_socket)
{
delete m_socket;
m_socket =NULL;
}
if(m_controler)
{
delete m_controler;
m_controler= NULL;
}
/* if(m_bluetoothServer)
{
delete m_bluetoothServer;
m_bluetoothServer = NULL;
}*/
}
static const QLatin1String serverUUID("{00007900-0000-1000-8000-00805F9B34FB}");
void bluetooth::searchCharteris()
{
if(!m_bluetoothServer)
{
return;
}
QList<QLowEnergyCharacteristic> tmpList = m_bluetoothServer->characteristics();
ui->textEditFromSever->append(QString::number(tmpList.size()));
for(int i = 0;i<tmpList.count();++i)
{
QLowEnergyCharacteristic charsrs=tmpList.at(i);
if(charsrs.isValid())
{
QString serT = QString("%1").arg(charsrs.uuid().toString());
ui->textEditFromSever->append("發現charsrs:"+serT);
//if(charsrs.properties()&QLowEnergyCharacteristic::WriteNoResponse||charsrs.properties()&QLowEnergyCharacteristic::Write)
if((charsrs.properties()&QLowEnergyCharacteristic::Write)||(charsrs.properties()&QLowEnergyCharacteristic::WriteNoResponse)||(charsrs.properties()&QLowEnergyCharacteristic::Read))
{
ui->textEditFromSever->append("charsrs對象有寫權限!");
m_writeChars.push_back(charsrs);
//m_writeChars[i] = charsrs;
//m_whichChars = i;
QLowEnergyService::WriteMode tmpMode;
QString qx;
if(charsrs.properties()&QLowEnergyCharacteristic::WriteNoResponse)
{
tmpMode = QLowEnergyService::WriteWithoutResponse;
qx = "只写不回应";
}
else if(charsrs.properties()&QLowEnergyCharacteristic::Read)
{
tmpMode = QLowEnergyService::WriteWithResponse;
qx = "读";
}
else if(charsrs.properties()&QLowEnergyCharacteristic::Write)
{
tmpMode = QLowEnergyService::WriteWithoutResponse;
qx = "写";
}
else if(charsrs.properties()&QLowEnergyCharacteristic::Notify)
{
qx = "通知";
}
m_writeMode.push_back(tmpMode);
ui->listWidget_2->addItem(serT+" 权限:"+qx);
}
if(charsrs.properties()&QLowEnergyCharacteristic::Read)
{
m_readChars = charsrs; // 保存讀權限
ui->textEditFromSever->append("保存讀權限!");
}
// 描述符定义特征如何由特定客户端配置
m_notifiDesc = charsrs.descriptor(QBluetoothUuid::ClientCharacteristicConfiguration);
if(m_notifiDesc.isValid())
{
// 寫描述符
m_bluetoothServer->writeDescriptor(m_notifiDesc,QByteArray::fromHex("0100"));
ui->textEditFromClient->append("寫文件描述符!");
}
}
}
}
void bluetooth::msgSendToServer(QByteArray array)
{
if(m_bluetoothServer)
{
if(m_whichChars == -1)
{
return;
}
m_bluetoothServer->writeCharacteristic(m_writeChars.at(m_whichChars),array,m_writeMode.at(m_whichChars));
}
else
{
QMessageBox::critical(this,"致命錯誤","服務為空!");
}
}
void bluetooth::connectDev(QBluetoothDeviceInfo dev)
{
m_controler = new QLowEnergyController(dev,this);//QLowEnergyController::createCentral(dev,this);
if(m_controler == 0)
{
ui->textEditFromSever->append("传建中央设备创建失敗!");
return;
}
else
{
ui->textEditFromSever->append("传建中央设备创建成功!");
}
ui->textEditFromSever->append("正在连接设备!");
// 發現新服務
connect(m_controler,&QLowEnergyController::serviceDiscovered,[=](QBluetoothUuid uuid){
ui->textEditFromSever->append("找到uuid:"+uuid.toString());
});
// 發現正在運行的服務
connect(m_controler,&QLowEnergyController::discoveryFinished,[=](){
ui->textEditFromSever->append("serviceDiscovered!");
if(m_bluetoothServer)
{
delete m_bluetoothServer;
m_bluetoothServer = NULL;
}
m_bluetoothServer = m_controler->createServiceObject(QBluetoothUuid(serverUUID),this);
if(!m_bluetoothServer)
{
ui->textEditFromSever->append("建立服務失敗!");
return;
}
ui->textEditFromSever->append("建立服務成功!");
//m_bluetoothServer->discoverDetails(); // 掃描服務
if(m_bluetoothServer->state() == QLowEnergyService::DiscoveryRequired)
{
ui->textEditFromSever->append("手動掃描特徵服務!");
m_bluetoothServer->discoverDetails(); // 掃描服務
}
else
{ ui->textEditFromSever->append("无法触发手動掃描特徵服務!");
searchCharteris();
}
// 服務綁定
connect(m_bluetoothServer,&QLowEnergyService::stateChanged,[=](QLowEnergyService::ServiceState state){
if(state == QLowEnergyService::DiscoveringServices)
{
ui->textEditFromSever->append("正在查找細節...");
//searchCharteris();
}
else if(state == QLowEnergyService::ServiceDiscovered)
{
ui->textEditFromSever->append("發現所有細節...");
searchCharteris();
}
else
{
ui->textEditFromSever->append("沒有發現服務細節!");
}
//emit aliveChanged();
});
// 讀寫數據綁定
connect(m_bluetoothServer,&QLowEnergyService::characteristicChanged,[=](QLowEnergyCharacteristic info, QByteArray value){
QString text = QString("%1").arg(QString(value.data()));//.arg(info.uuid().toString());
ui->textEditFromSever_3->append("status change:"+value.toHex());
//m_bluetoothServer->readCharacteristic(info);
});
connect(m_bluetoothServer,&QLowEnergyService::characteristicRead,[=](QLowEnergyCharacteristic info, QByteArray value){
ui->textEditFromSever_3->append("read:"+QString(value));
});
connect(m_bluetoothServer,&QLowEnergyService::characteristicWritten,[=](QLowEnergyCharacteristic info, QByteArray value){
ui->textEditFromSever_3->append("write:"+QString(value.data()));
});
connect(m_bluetoothServer, static_cast<void(QLowEnergyService::*)(QLowEnergyService::ServiceError)>(&QLowEnergyService::error),
[=](QLowEnergyService::ServiceError newErrorr){
if(QLowEnergyService::NoError == newErrorr)
{
ui->textEditFromSever->append("没有发生错误");
}
if(QLowEnergyService::OperationError==newErrorr)
{
ui->textEditFromSever->append("错误: 当服务没有准备好时尝试进行操作!");
}
if(QLowEnergyService::CharacteristicReadError==newErrorr)
{
ui->textEditFromSever->append("尝试读取特征值失败!");
}
if(QLowEnergyService::CharacteristicWriteError==newErrorr)
{
ui->textEditFromSever->append("尝试为特性写入新值失败!");
}
if(QLowEnergyService::DescriptorReadError==newErrorr)
{
ui->textEditFromSever->append("尝试读取描述符值失败!");
}
if(QLowEnergyService::DescriptorWriteError==newErrorr)
{
ui->textEditFromSever->append(" 尝试向描述符写入新值失败!");
}
if(QLowEnergyService::UnknownError==newErrorr)
{
ui->textEditFromSever->append("与服务交互时发生未知错误!");
}
});
});
connect(m_controler,&QLowEnergyController::connected,[=](){
ui->textEditFromSever->append("蓝牙连接成功!");
m_oneDevHaveConnected = true;
m_controler->discoverServices();
});
connect(m_controler,&QLowEnergyController::disconnected,[=](){
m_oneDevHaveConnected = false;
ui->textEditFromSever->append("蓝牙已断开!");
});
connect(m_controler,static_cast<void(QLowEnergyController::*)(QLowEnergyController::Error)>(&QLowEnergyController::error),[=](QLowEnergyController::Error error){
if(error==QLowEnergyController::NoError)
{
ui->textEditFromSever->append("没有发生错误");
}
else if(error==QLowEnergyController::UnknownError)
{
ui->textEditFromSever->append("出现未知错误");
}
else if(error==QLowEnergyController::UnknownRemoteDeviceError)
{
ui->textEditFromSever->append("无法找到传递给此类构造函数的远程Bluetooth Low Energy设备");
}
else if(error==QLowEnergyController::NetworkError)
{
ui->textEditFromSever->append("尝试读取或写入远程设备失败");
}
else if(error==QLowEnergyController::InvalidBluetoothAdapterError)
{
ui->textEditFromSever->append("传递给此类构造函数的本地蓝牙设备无法找到，或者没有本地蓝牙设备");
}
else if(error==QLowEnergyController::InvalidBluetoothAdapterError)
{
ui->textEditFromSever->append("尝试连接到远程设备失败");
}
else
{
ui->textEditFromSever->append("*****未知错误!****");
}
});
m_controler->connectToDevice();
}
void bluetooth::SlotAddDevicesToList(QBluetoothDeviceInfo info)
{
if(info.coreConfigurations()&QBluetoothDeviceInfo::LowEnergyCoreConfiguration)
{
QString label = QString("%1 %2").arg(info.address().toString()).arg(info.name());
QList<QListWidgetItem *> items = ui->listWidget->findItems(label, Qt::MatchExactly);
if (items.empty())
{
QListWidgetItem *item = new QListWidgetItem(label);
/*QBluetoothLocalDevice::Pairing pairingStatus = m_localDevice->pairingStatus(info.address());
if (pairingStatus == QBluetoothLocalDevice::Paired || pairingStatus == QBluetoothLocalDevice::AuthorizedPaired )
item->setTextColor(QColor(Qt::green));
else
item->setTextColor(QColor(Qt::black));*/
m_devList.append(info);
ui->listWidget->addItem(item);
//connect(ui->listWidget,SIGNAL(itemDoubleClicked(QListWidgetItem*)),this,SLOT(SlotItemActivated(QListWidgetItem*)));
}
}
}
void bluetooth::SlotBluetoothConnected()
{
emit SigSendto("蓝牙连接成功");
qDebug() << "The android device has been connected successfully!";
QMessageBox::information(this,tr("Info"),tr("successful connection!"));
}
void bluetooth::SlotBluetoothDisConnected()
{
emit SigSendto("蓝牙已断开");
qDebug() << "The android device has been disconnected successfully!";
QMessageBox::information(this,tr("msg"),tr("successful disconnection!"));
}
void bluetooth::SlotBluetoothReadData()
{
if(!m_socket)
{
return;
}
QByteArray line = m_socket->readAll();
//QString strData = line.toHex();
QString strData(line);
m_vector.append(strData);
qDebug() <<"rec data is: "<<m_vector;
qDebug() <<"The comStr length is: " << m_vector.length();
//if(m_vector.length() >= 30) {
ui->textEditFromClient->append(m_vector + "\n");
m_vector.clear();
//}
}
void bluetooth::SlotItemActivated(QListWidgetItem *item)
{
//QString address = item->text().left(17);
if(m_oneDevHaveConnected)
{
return;
}
if(m_controler)
{
m_controler->disconnectFromDevice();
delete m_controler;
m_controler = NULL;
}
QBluetoothDeviceInfo dev;
QString text = item->text();
int index = text.indexOf(' ');
if (index == -1)
return;
QBluetoothAddress address(text.left(index));
for(int i = 0;i<m_devList.count();++i)
{
if(m_devList.at(i).address().toString()==text.left(index))
{
// emit SigChosedDev(m_devList.at(i));
dev = m_devList.at(i);
m_discoveryAgent->stop();// 停止搜索
break;
}
}
connectDev(dev);
/*QString text = item->text();
int index = text.indexOf(' ');
if (index == -1)
return;
QBluetoothAddress address(text.left(index));
QString name(text.mid(index + 1));
qDebug() << "You has choice the bluetooth address is " << address;
qDebug() << "The device is connneting.... ";
QMessageBox::information(this,tr("提示"),tr("设备正在连接z..."));
//const QString uuid = "00007900-0000-1000-8000-00805F9B34FB";//ui->lineEdit->text();
//m_socket->connectToService(address, QBluetoothUuid(uuid) ,QIODevice::ReadWrite);
for(int i = 0;i
emit SigSendto("正连接目标");
m_controler = new QLowEnergyController(dev,this);
connect(m_controler,&QLowEnergyController::connected,[=](){
emit SigSendto("蓝牙连接成功");
qDebug() << "The android device has been connected successfully!";
QMessageBox::information(this,tr("Info"),tr("successful connection!"));
m_controler->discoverServices();
});
}
}
}
connect(m_controler,&QLowEnergyController::serviceDiscovered,[=](){
});*/
}
void bluetooth::on_openBtn_clicked()
{
m_localDevice->powerOn();
ui->closeBtn->setEnabled(true);
ui->openBtn->setEnabled(false);
ui->scanBtn->setEnabled(true);
}
void bluetooth::on_scanBtn_clicked()
{
emit SigSendto("蓝牙扫描中");
if(m_discoveryAgent)
{
m_discoveryAgent->start();
// m_discoveryAgent->start(QBluetoothDeviceDiscoveryAgent::LowEnergyMethod);
ui->scanBtn->setEnabled(false);
}
}
void bluetooth::on_sendBtn_2_clicked()
{
QString info = ui->msgLine->text();
QString changVol = info;
ui->msgLine->clear();
int len = info.size();
char buf[20];
sprintf(buf,"%02x",len);
QString leny = QString::fromUtf8(buf);
QByteArray ys = leny.toLatin1();
QString ysstr = QString::fromLatin1(QByteArray::fromHex(ys));
if(m_whichChange == 1)
{
leny = typeIp+ysstr;
}
else if(m_whichChange == 2)
{
leny = typeYm+ysstr;
}
else if(m_whichChange == 3)
{
msgSendToServer(changVol.toLatin1());
return;
}
info=leny+info;
QByteArray array = info.toLatin1();
/*写入newValue作为特性的值。如果操作成功，将发射characteristicWritten（）信号;
低功耗设备: 每次最多写20个字节
*/
msgSendToServer(array);
}
void bluetooth::on_clearBtn_clicked()
{
ui->textEditFromClient->clear();
ui->textEditFromSever_3->clear();
ui->textEditFromSever->clear();
}
void bluetooth::on_closeBtn_clicked()
{
m_localDevice->setHostMode(QBluetoothLocalDevice::HostPoweredOff);
ui->closeBtn->setEnabled(false);
ui->openBtn->setEnabled(true);
ui->scanBtn->setEnabled(false);
}
void bluetooth::on_disconnectBtn_clicked()
{
//emit SigSendto("连接已断开");
m_oneDevHaveConnected = false;
ui->textEditFromSever->append("手动断开蓝牙设备!");
if(m_controler)
{
delete m_controler;
m_controler = NULL;
}
//m_socket->disconnectFromService();
}