Add get-uptime.js

packages/usb/get-uptime.js

@@ -0,0 +1,25 @@
+#!/usr/bin/env node
+const path = require('path');
+const uhk = require('./uhk');
+const device = uhk.getUhkDevice();
+
+function convertMs(milliseconds) {
+    let days, hours, minutes, seconds;
+    seconds = Math.floor(milliseconds / 1000);
+    minutes = Math.floor(seconds / 60);
+    seconds = seconds % 60;
+    hours = Math.floor(minutes / 60);
+    minutes = minutes % 60;
+    days = Math.floor(hours / 24);
+    hours = hours % 24;
+    return {days, hours, minutes, seconds};
+}
+
+let buffer = new Buffer(uhk.pushUint32([uhk.usbCommands.getDeviceProperty, uhk.devicePropertyIds.uptime]));
+//console.log(buffer);
+device.write(uhk.getTransferData(buffer));
+let response = device.readSync();
+//console.log(Buffer.from(response));
+let uptimeMs = uhk.getUint32(response, 1);
+let uptime = convertMs(uptimeMs);
+console.log(`Uptime: ${uptime.days}d ${String(uptime.hours).padStart(2, '0')}:${String(uptime.minutes).padStart(2, '0')}:${String(uptime.seconds).padStart(2, '0')}`)