Description:

flutter usb serial

flutter_serial_port_to_usb #
U转串Demo
Getting Started #
CH340芯片：在windows平台可直接视为串口使用，在android平台被视为Usb设备。
windows平台 CH340官方给了一个驱动文件https://www.wch.cn/downloads/CH341SER_EXE.html(安装完又卸了程序正常运行)
windows平台使用插件 ：https://pub.flutter-io.cn/packages/serial_port_win32
android平台使用插件：https://pub.dev/packages/usb_serial
serial_port_win32: ^0.5.2
usb_serial: ^0.3.0
使用方式封装为usb_serial包下内容；
基本方法有：
abstract class UsbSerial {
///初始化
create();

///打开串口
Future<bool> open();

///关闭串口
Future<bool> close();

///写入字节列表
Future<void> write(Uint8List data) async {}

///写入字符串
Future<void> writeString(String data) async {}

///设置读数监听
void readByteOnListen(Function(Uint8List value) onData);

///串口状态
bool isOpen();

///设置参数
Future<void> setPortParameters() async {}

///获取可用串口
Future<List<String>> getAvailablePorts();
}

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使用案例（同main.dart type值为3时）：
UsbSerial usbSerialWindows = UsbSerialFactory().getUsbSerial();//封装的结果
usbSerialWindows.create();//初始化
debugPrint('MyTest ${(await usbSerialWindows.getAvailablePorts()).toString()}');//打印可用串口

usbSerialWindows.open();//打开串口
///读数据
usbSerialWindows.readByteOnListen((value) {
print(value);
// String str = utf8.decode(value.sublist(0, value.length - 1));
String str = utf8.decode(value);
print(str);
setState(() {
receive = str;
});
});
usbSerialWindows.writeString(editingController.text);//写数据
usbSerialWindows.close();//关闭串口
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##android平台需要申请权限：

<intent-filter>
<action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
</intent-filter>

<meta-data android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
android:resource="@xml/device_filter" />
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<?xml version="1.0" encoding="utf-8"?>
<resources>
<!-- 0x0403 / 0x6001: FTDI FT232R UART -->
<usb-device vendor-id="1027" product-id="24577" />
<usb-device vendor-id="6790" product-id="29987" />

<!-- 0x0403 / 0x6015: FTDI FT231X -->
<usb-device vendor-id="1027" product-id="24597" />

<!-- 0x2341 / Arduino -->
<usb-device vendor-id="9025" />

<!-- 0x16C0 / 0x0483: Teensyduino -->
<usb-device vendor-id="5824" product-id="1155" />

<!-- 0x10C4 / 0xEA60: CP210x UART Bridge -->
<usb-device vendor-id="4292" product-id="60000" />

<!-- 0x067B / 0x2303: Prolific PL2303 -->
<usb-device vendor-id="1659" product-id="8963" />

<!-- 0x1366 / 0x0105: Segger JLink -->
<usb-device vendor-id="4966" product-id="261" />

<!-- 0x1366 / 0x0105: CH340 JLink -->
<usb-device vendor-id="1A86" product-id="7523" />

</resources>
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用代码手动申请权限应该也是可以的，我没有尝试

License

For personal and professional use. You cannot resell or redistribute these repositories in their original state.

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