hiro/tenx_usb_missile_launcher
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tenx_usb_missile_launcher/tenx_driver.js

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//
// Tenx Driver for Tenx USB Rocket Launcher
// Sold in the UK as Marks and Spencer USB Missile Launcher
// (C) Roger Hardiman 2016
//
/*
The Tenx USB Rocket Launcher has the following Device description
Device {
busNumber: 1,
deviceAddress: 9,
deviceDescriptor:
{ bLength: 18,
bDescriptorType: 1,
bcdUSB: 272,
bDeviceClass: 0,
bDeviceSubClass: 0,
bDeviceProtocol: 0,
bMaxPacketSize0: 8,
idVendor: 4400, <- 0x1130
idProduct: 514, <- 0x0202
bcdDevice: 256,
iManufacturer: 0,
iProduct: 2,
iSerialNumber: 0,
bNumConfigurations: 1 },
portNumbers: [ 3 ] },
*/
var usb = require('usb')
var CMD = {
UP: 8,
DOWN: 2,
LEFT: 4,
RIGHT: 6,
UPLEFT: 7,
UPRIGHT: 9,
DOWNRIGHT: 3,
DOWNLEFT: 1,
FIRE: 5,
STOP: 0
};
function TenxDriver() {
}
TenxDriver.prototype.open = function() {
// Find and Open
this.launcher = usb.findByIds(0x1130,0x202);
if (!this.launcher) return;
this.launcher.open();
// Detach Kernel Driver
if (this.launcher.interfaces[0].isKernelDriverActive()) {
this.launcher.interfaces[0].detachKernelDriver();
}
if (this.launcher.interfaces[1].isKernelDriverActive()) {
this.launcher.interfaces[1].detachKernelDriver();
}
}
TenxDriver.prototype.close = function() {
if (!this.launcher) return;
if (!this.launcher.interfaces[0].isKernelDriverActive()) {
this.launcher.interfaces[0].attachKernelDriver();
}
if (!this.launcher.interfaces[1].isKernelDriverActive()) {
this.launcher.interfaces[1].attachKernelDriver();
}
}
TenxDriver.prototype.send_command = function(command) {
// command has 2 header messages followed by a payload
// use nested callbacks to deliver each in turn
header_1 = new Buffer([85, 83, 66, 67, 0, 0, 4, 0]);
header_2 = new Buffer([85, 83, 66, 67, 0, 64, 2, 0]);
left_msg = new Buffer([0, 1, 0, 0, 0, 0, 8, 8,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0]);
right_msg = new Buffer([0, 0, 1, 0, 0, 0, 8, 8,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0]);
up_msg = new Buffer([0, 0, 0, 1, 0, 0, 8, 8,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0]);
down_msg = new Buffer([0, 0, 0, 0, 1, 0, 8, 8,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0]);
up_left_msg = new Buffer([0, 1, 0, 1, 0, 0, 8, 8,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0]);
up_right_msg = new Buffer([0, 0, 1, 1, 0, 0, 8, 8,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0]);
down_left_msg = new Buffer([0, 1, 0, 0, 1, 0, 8, 8,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0]);
down_right_msg = new Buffer([0, 0, 1, 0, 1, 0, 8, 8,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0]);
fire_msg = new Buffer([0, 0, 0, 0, 0, 1, 8, 8,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0]);
stop_msg = new Buffer([0, 0, 0, 0, 0, 0, 8, 8,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0]);
if (!this.launcher) return;
this.launcher.controlTransfer(0x21,0x09,0x02,0x01,header_1);
this.launcher.controlTransfer(0x21,0x09,0x02,0x01,header_2);
if (command == CMD.LEFT) this.launcher.controlTransfer(0x21,0x09,0x02,0x00, left_msg);
if (command == CMD.RIGHT) this.launcher.controlTransfer(0x21,0x09,0x02,0x00, right_msg);
if (command == CMD.UP) this.launcher.controlTransfer(0x21,0x09,0x02,0x00, up_msg);
if (command == CMD.DOWN) this.launcher.controlTransfer(0x21,0x09,0x02,0x00, down_msg);
if (command == CMD.UPLEFT) this.launcher.controlTransfer(0x21,0x09,0x02,0x00, up_left_msg);
if (command == CMD.UPRIGHT) this.launcher.controlTransfer(0x21,0x09,0x02,0x00, up_right_msg);
if (command == CMD.DOWNLEFT) this.launcher.controlTransfer(0x21,0x09,0x02,0x00, down_left_msg);
if (command == CMD.DOWNRIGHT) this.launcher.controlTransfer(0x21,0x09,0x02,0x00, down_right_msg);
if (command == CMD.STOP) this.launcher.controlTransfer(0x21,0x09,0x02,0x00, stop_msg);
if (command == CMD.FIRE) this.launcher.controlTransfer(0x21,0x09,0x02,0x00, fire_msg);
}
TenxDriver.prototype.up = function() { this.send_command(CMD.UP)};
TenxDriver.prototype.down = function() { this.send_command(CMD.DOWN)};
TenxDriver.prototype.left = function() { this.send_command(CMD.LEFT)};
TenxDriver.prototype.right = function() { this.send_command(CMD.RIGHT)};
TenxDriver.prototype.upleft = function() { this.send_command(CMD.UPLEFT)};
TenxDriver.prototype.upright = function() { this.send_command(CMD.UPRIGHT)};
TenxDriver.prototype.downleft = function() { this.send_command(CMD.DOWNLEFT)};
TenxDriver.prototype.downright = function() { this.send_command(CMD.DOWNRIGHT)};
TenxDriver.prototype.stop = function() { this.send_command(CMD.STOP)};
TenxDriver.prototype.fire = function() { this.send_command(CMD.FIRE)};
module.exports = TenxDriver;
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