使用QCanBusDevice 发送数据
时间: 2023-07-11 08:53:11 浏览: 229
使用QCanBusDevice发送数据的步骤如下:
1. 创建QCanBusDevice对象并连接到CAN总线。
```cpp
QCanBusDevice* device = QCanBus::instance()->createDevice("socketcan", "vcan0");
if (!device->connectDevice()) {
qDebug() << "Failed to connect to CAN bus";
return;
}
```
2. 构造QCanBusFrame对象并设置数据。
```cpp
QCanBusFrame frame;
frame.setFrameId(0x123);
frame.setPayload(QByteArray::fromHex("01020304"));
```
3. 调用QCanBusDevice的writeFrame方法发送数据。
```cpp
if (!device->writeFrame(frame)) {
qDebug() << "Failed to send CAN frame";
return;
}
```
完整示例代码如下:
```cpp
QCanBusDevice* device = QCanBus::instance()->createDevice("socketcan", "vcan0");
if (!device->connectDevice()) {
qDebug() << "Failed to connect to CAN bus";
return;
}
QCanBusFrame frame;
frame.setFrameId(0x123);
frame.setPayload(QByteArray::fromHex("01020304"));
if (!device->writeFrame(frame)) {
qDebug() << "Failed to send CAN frame";
return;
}
```
阅读全文