I need to communicate my system with the serial port of the Client computer, the detail is that with PHP I can use fopen , but I do not want to access the server's serial port, but the client's port.
I thought about using a plugin, either in Java or in Flash, someone has an idea how I can make this communication.
NOTE: The communication will be with a fiscal printer that works on the serial port.
I've had to do this kind of work in several applications.
The solutions found were to use Java applets or install a small service on the client machine that opens a port and responds to HTTP requests, so we could make Ajax requests using JavaScript to this port on localhost. This service can be done in a language that communicates directly with the serial port of the client machine.
I've seen some applications that use ActiveX, but were restricted to Internet Explorer.
In addition to the excellent solution mentioned by the colleague, using Java Applet, only to include: Google Chrome provides API to communicate with the Serial Port.
var writeSerial=function(str) {
chrome.serial.send(connectionId, convertStringToArrayBuffer(str), onSend);
}
// Convert string to ArrayBuffer
var convertStringToArrayBuffer=function(str) {
var buf=new ArrayBuffer(str.length);
var bufView=new Uint8Array(buf);
for (var i=0; i<str.length; i++) {
bufView[i]=str.charCodeAt(i);
}
return buf;
}
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