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SerialPortBIDISample.js
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class SerialPortBIDISample extends React.Component {
constructor(props) {
super(props);
this.state = {
numOfSerialPorts: -1,
serialPorts: [],
serialPort: "",
serialPortBaudRate: 9600,
serialPortParity: "None",
serialPortStopBits: "One",
serialPortDataBits: "Eight",
serialPortFlowControl: "None",
serialComm: null,
serialCommState: 0, // 0 = closed, 1 = sending, 2 = data received, 3 = error
dataToSend: "",
dataReceived: "",
endLineChars: ""
};
}
setSerialPorts(portsList) {
this.state.numOfSerialPorts = portsList.length;
this.setState({ serialPorts: portsList });
}
setData(event) {
this.state[event.target.name] = event.target.checked ? event.target.checked : event.target.value;
}
componentDidMount() {
JSPM.JSPrintManager.Caller = this;
//get serial ports if any
JSPM.JSPrintManager.getSerialPorts().then(function(portsList) {
JSPM.JSPrintManager.Caller.setSerialPorts(portsList);
});
}
doSendData() {
if (!this.state.serialComm) {
this.state.dataReceived += "Serial port is not open!\r\n";
this.setState({ serialCommState: 3 });
} else if (this.state.dataToSend.length > 0) {
this.setState({ serialCommState: 1 });
this.state.serialComm.send(this.state.dataToSend + this.state.endLineChars.replace('CR', '\r').replace('LF', '\n'));
this.state.dataReceived += "> " + this.state.dataToSend + "\r\n";
}
}
doOpen() {
this.state.serialComm = new JSPM.SerialComm(this.state.serialPort, parseInt(this.state.serialPortBaudRate), JSPM.Serial.Parity[this.state.serialPortParity], JSPM.Serial.StopBits[this.state.serialPortStopBits], JSPM.Serial.DataBits[this.state.serialPortDataBits], JSPM.Serial.Handshake[this.state.serialPortFlowControl]);
let _this = this;
this.state.serialComm.onDataReceived = function(data) {
_this.state.dataReceived += "< " + data + "\r\n";
console.log("Data Received:" + data);
_this.setState({ serialCommState: 2 });
};
this.state.serialComm.onError = function(data, is_critical) {
_this.state.dataReceived += "ERROR: " + data + "\r\n";
console.log("Error: " + data);
_this.setState({ serialCommState: 3 });
};
this.state.serialComm.onClose = function(data) {
_this.state.dataReceived += "COMM CLOSED!" + "\r\n";
console.log("Closed: " + data);
_this.setState({ serialCommState: 0 });
};
this.state.serialComm.open().then(_ => {
_this.state.dataReceived += "COMM OPEN!" + "\r\n";
_this.setState({ serialCommState: 1 });
});
}
doClose() {
if (!this.state.serialComm && this.state.serialComm.isOpen !== true) {
this.state.dataReceived += "Serial port is not open!\r\n";
this.setState({ serialCommState: 3 });
} else this.state.serialComm.close();
}
render() {
let demoContent;
if (this.state.numOfSerialPorts == -1) {
demoContent = (
<div className="row">
<div className="col-md-12">
<div className="text-center">
<img src="loading.gif" id="loadingSerialPorts" />
<br />
<strong>Getting serial ports...</strong>
</div>
</div>
</div>
);
} else if (this.state.numOfSerialPorts == 0) {
demoContent = (
<div className="row">
<div className="col-md-12">
<div className="text-center">
<div className="alert alert-danger">No serial ports detected on this system.</div>
</div>
</div>
</div>
);
} else {
let ports = this.state.serialPorts;
let dataReceived = this.state.dataReceived;
demoContent = (
<div className="row">
<div className="col-md-12">
<div className="form-group">
<div className="row">
<div className="col-md-12">
<strong>Serial Comm Settings</strong>
</div>
</div>
<div className="row">
<div className="col-md-12">
<div className="small alert alert-warning">
<label>
Serial Port
<select className="form-control form-control-sm" name="serialPort" onChange={this.setData.bind(this)}>
<option defaultValue value="" />
{ports.map(function(i) {
let opt = (
<option key={i} value={i}>
{i}
</option>
);
return opt;
})}
</select>
</label>
<label>
Baud Rate
<input className="form-control form-control-sm" name="serialPortBaudRate" placeholder="9600" onChange={this.setData.bind(this)} />
</label>
<label>
Data Bits
<select className="form-control form-control-sm" name="serialPortDataBits" onChange={this.setData.bind(this)}>
<option value="Eight">8</option>
<option value="Seven">7</option>
<option value="Six">6</option>
<option value="Five">5</option>
</select>
</label>
<label>
Parity
<select className="form-control form-control-sm" name="serialPortParity" onChange={this.setData.bind(this)}>
<option value="None">None</option>
<option value="Odd">Odd</option>
<option value="Even">Even</option>
<option value="Mark">Mark</option>
<option value="Space">Space</option>
</select>
</label>
<label>
Stop bits
<select className="form-control form-control-sm" name="serialPortStopBits" onChange={this.setData.bind(this)}>
<option value="One">1</option>
<option value="OnePointFive">1.5</option>
<option value="Two">2</option>
</select>
</label>
<label>
Flow control
<select className="form-control form-control-sm" name="serialPortFlowControl" onChange={this.setData.bind(this)}>
<option value="None">None</option>
<option value="XOnXOff">XOnXOff</option>
<option value="RequestToSend">RTS (Request to send)</option>
<option value="RequestToSendXOnXOff">RTS XOnXOff</option>
</select>
</label>
<br />
<button className="btn btn-success" type="button" onClick={this.doOpen.bind(this)}>
Open
</button>
<button className="btn btn-danger" type="button" onClick={this.doClose.bind(this)}>
Close
</button>
</div>
</div>
</div>
<div className="row">
<div className="col-md-12">
<strong>Data to Send:</strong>
<div className="input-group mb-3">
<input placeholder="Type Data here..." aria-label="Type Data here..." aria-describedby="basic-addon2" className="form-control text-monospace" name="dataToSend" onChange={this.setData.bind(this)} />
<select name="endLineChars" onChange={this.setData.bind(this)}>
<option value="">None</option>
<option value="CR">CR</option>
<option value="LF">LF</option>
<option value="CRLF">CRLF</option>
</select>
<div className="input-group-append">
<button className="btn btn-info" type="button" onClick={this.doSendData.bind(this)}>
Send...
</button>
</div>
</div>
</div>
</div>
<div className="row">
<div className="col-md-12">
<small>
<textarea className="terminal" name="txtDataReceived" readOnly value={dataReceived} />
</small>
</div>
</div>
</div>
</div>
</div>
);
}
return (
<div>
<div className="row">
<div className="col-md-1">
<button className="btn btn-dark btn-lg" onClick={() => this.props.setSample(0)}>
<i className="fa fa-arrow-left" />
</button>
</div>
<div className="col-md-11">
<h2 className="text-center">
<i className="fa fa-exchange iconDemo" /> BIDI Serial Comm
</h2>
<hr />
</div>
</div>
{demoContent}
</div>
);
}
}
window.SerialPortBIDISample = SerialPortBIDISample;