forked from soltius/BluetoothClassicSerial
/
bluetoothClassicSerial.js
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/
bluetoothClassicSerial.js
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// This implementation is for testing in the brower. Future implemetations *might* be able to use
// Chrome Bluetooth APIs https://developer.chrome.com/apps/bluetooth or Web Bluetooth.
// Code from PhracturedBlue https://github.com/don/bluetoothSerial/issues/115
// When using the browser, it is necessary to have a processing function that
// can emulate the bluetooth device.
// Use the 'register' function as follows:
//
// bluetoothClassicSerial.register(function(buf) {
// //buf.input is the data that was received via bluetoothClassicSerial.write
// //buf.output is data that will be transmitted via a bluetoothClassicSerial.read or subscribe
// //Do processing here
// buf.input = ""
// });
// Function emulates a Bluetooth device echoing back input
//
// var echoProxy = function(buf) {
// if (buf && buf.input) {
// console.log("Received: " + buf.input);
// buf.output = buf.input + "\n";
// buf.input = ""; // clear input
// }
// return buf;
// }
// bluetoothClassicSerial.register(echoProxy);
module.exports = (function() {
var connected = false;
var enabled = true;
var buf = {
input: "",
output: ""
};
var subscribe_cb = function(value) {};
var raw_cb = false;
var subscribe_delim = false;
var interval;
var process_cb;
var btlog = function(str) { console.log(str); }
var timer_cb = function() {
if(process_cb) {
process_cb(buf);
}
if (buf.output.length) {
if(subscribe_delim) {
var index = buf.output.indexOf(subscribe_delim);
if (index > -1) {
var data = buf.output.substr(0, index+subscribe_delim.length);
buf.output = buf.output.substr(index+subscribe_delim.length);
subscribe_cb(data);
}
}
}
};
return {
connect : function(deviceId, interfaceArray, success_cb, fail_cb) {
btlog("bluetoothClassicSerial.connect: " + deviceId + ", " + JSON.stringify(interfaceArray));
connected = true;
if (success_cb) { success_cb(); }
},
register : function(data_cb) {
interval = window.setInterval(timer_cb, 100);
process_cb = data_cb;
},
disconnect : function(success_cb, fail_cb) {
btlog("bluetoothClassicSerial.disconnect");
connected = false;
window.clearInterval(interval);
if (success_cb) { success_cb(); }
},
write : function(interfaceId, data, success_cb, fail_cb) {
btlog("bluetoothClassicSerial.write: " + data);
buf.input += data;
if(success_cb) { success_cb(); }
},
available : function(interfaceId, success_cb, fail_cb) {
btlog("bluetoothClassicSerial.available");
success_cb(buf.output.length);
},
read : function(interfaceId, success_cb, fail_cb) {
btlog("bluetoothClassicSerial.read: " + buf.output);
var data = buf.output;
buf.output = "";
success_cb(data);
},
readUntil : function(interfaceId, delimiter, success_cb, fail_cb) {
btlog("bluetoothClassicSerial.readUntil");
var index = buf.output.indexOf(delimiter);
if (index == -1) {
success_cb("");
} else {
var data = buf.output.substr(0, index+subscribe_delim.length);
buf.output = buf.output.substr(index+subscribe_delim.length);
success_cb(data);
}
},
subscribe : function(interfaceId, delimiter, success_cb, fail_cb) {
btlog("bluetoothClassicSerial.subscribe '"+delimiter+"'");
subscribe_cb = success_cb;
subscribe_delim = delimiter;
},
unsubscribe : function(interfaceId, success_cb, fail_cb) {
btlog("bluetoothClassicSerial.unsubscribe");
subscribe_delim = false;
if(success_cb) { success_cb(); }
},
subscribeRawData : function(interfaceId, success_cb, fail_cb) {
btlog("bluetoothClassicSerial.subscribeRawData");
raw_cb = success_cb;
},
unsubscribeRawData : function(interfaceId, success_cb, fail_cb) {
btlog("bluetoothClassicSerial.unsubscribeRawData");
raw_cb = false;
if(success_cb) { success_cb(); }
},
clear : function(interfaceId, success_cb, fail_cb) {
btlog("bluetoothClassicSerial.clear");
buf.output = "";
if(success_cb) { success_cb(); }
},
list : function(success_cb, fail_cb) {
var devices = [{
"class": 276,
"id": "10:BF:48:CB:00:00",
"address": "10:BF:48:CB:00:00",
"name": "Nexus 7"
}, {
"class": 7936,
"id": "00:06:66:4D:00:00",
"address": "00:06:66:4D:00:00",
"name": "RN42"
}]
success_cb(devices); },
isConnected : function(success_cb, fail_cb) {
btlog("bluetoothClassicSerial.isConnected: " + connected);
if(connected) {
if(success_cb) { success_cb(); }
} else {
if(fail_cb) { fail_cb(); }
}
},
isEnabled : function(success_cb, fail_cb) {
btlog("bluetoothClassicSerial.isEnabled: " + enabled);
if(enabled) {
if(success_cb) { success_cb(); }
} else {
if(fail_cb) { fail_cb(); }
}
},
showBluetoothSettings : function(success_cb, fail_cb) {
alert("bluetoothClassicSerial.showBluetoothSettings is not implemented");
},
enable : function(success_cb, fail_cb) {
btlog("bluetoothClassicSerial.enable");
enable = true;
if(success_cb) { success_cb(); }
},
discoverUnpaired : function(success_cb, fail_cb) {
alert("bluetoothClassicSerial.discoverUnpaired is not implemented");
}
}
})();