Diff: web-derived/nmea/web-nmea-script.inc

Revision:

55:a1bd0572c8b6

Parent:

49:115a5e4fac0c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web-derived/nmea/web-nmea-script.inc	Sun Apr 28 08:31:50 2019 +0000
@@ -0,0 +1,130 @@
+"'use strict';\n"
+"\n"
+"const NMEA_DEG_UNIT = 10000000;\n"
+"const NMEA_HGT_UNIT =  1000000;\n"
+"\n"
+"var response     = '';\n"
+"var headers      = '';\n"
+"var gpsTrace     = false;\n"
+"var gpsVerbose   = false;\n"
+"var msgTrace     = false;\n"
+"var cmdTrace     = false;\n"
+"var lat          = 0;\n"
+"var lng          = 0;\n"
+"var hgt          = 0;\n"
+"var hgtAboveMsl  = 0;\n"
+"var mslAboveWgs  = 0;\n"
+"var dop          = 0;\n"
+"var satCount     = 0;\n"
+"var fixQuality   = 0;\n"
+"var sensorHeight = 0;\n"
+"var bucketCount  = 0;\n"
+"var buckets      = '';\n"
+"\n"
+"function hexToBit(iChar, iBit)\n"
+"{\n"
+"   var value = parseInt(response.charAt(iChar), 16);\n"
+"   value >>= iBit;\n"
+"   return value & 1;\n"
+"}\n"
+"function parseSint32fromHex(value)\n"
+"{\n"
+"    value = parseInt(value, 16);\n"
+"    if (value > 0x7FFFFFFF) value -= 0xFFFFFFFF;\n"
+"    return value;\n"
+"}\n"
+"function parseAjax()\n"
+"{\n"
+"    gpsTrace     = hexToBit(0, 0);\n"
+"    gpsVerbose   = hexToBit(0, 1);\n"
+"    msgTrace     = hexToBit(0, 2);\n"
+"    cmdTrace     = hexToBit(0, 3);\n"
+"    lat          = parseSint32fromHex(response.substr( 1, 8));\n"
+"    lng          = parseSint32fromHex(response.substr( 9, 8));\n"
+"    hgt          = parseSint32fromHex(response.substr(17, 8));\n"
+"    hgtAboveMsl  = parseSint32fromHex(response.substr(25, 8));\n"
+"    mslAboveWgs  = parseSint32fromHex(response.substr(33, 8));\n"
+"    dop          = parseSint32fromHex(response.substr(41, 8));\n"
+"    satCount     = parseSint32fromHex(response.substr(49, 8));\n"
+"    fixQuality   = parseSint32fromHex(response.substr(57, 8));\n"
+"    sensorHeight = parseSint32fromHex(response.substr(65, 8));\n"
+"    bucketCount  = parseSint32fromHex(response.substr(73, 8));\n"
+"    buckets      = '';\n"
+"    for (var i = 0; i < bucketCount; i++)\n"
+"    {\n"
+"        buckets += (i * 50).toString().padStart(3, '0') + ' ' + parseInt(response.substr(81 + i * 8, 8), 16) + '\\r\\n';\n"
+"    }\n"
+"}\n"
+"function degToString(plus, minus, deg)\n"
+"{\n"
+"    deg /= NMEA_DEG_UNIT;\n"
+"    if (deg >= 0) return plus  +    deg.toFixed(5);\n"
+"    else          return minus + (-deg).toFixed(5);\n"
+"}\n"
+"function hgtToString(plus, minus, hgt)\n"
+"{\n"
+"    hgt /= NMEA_HGT_UNIT;\n"
+"    if (hgt >= 0) return plus  +    hgt.toFixed(1);\n"
+"    else          return minus + (-hgt).toFixed(1);\n"
+"}\n"
+"function displayGeneral()\n"
+"{\n"
+"   var elem;\n"
+"   elem = document.getElementById('ajax-trace-gps'    ); if (elem) elem.setAttribute('dir', gpsTrace   ? 'rtl' : 'ltr');\n"
+"   elem = document.getElementById('ajax-trace-verbose'); if (elem) elem.setAttribute('dir', gpsVerbose ? 'rtl' : 'ltr');\n"
+"   elem = document.getElementById('ajax-trace-msg'    ); if (elem) elem.setAttribute('dir', msgTrace   ? 'rtl' : 'ltr');\n"
+"   elem = document.getElementById('ajax-trace-cmd'    ); if (elem) elem.setAttribute('dir', cmdTrace   ? 'rtl' : 'ltr');\n"
+"\n"
+"   elem = document.getElementById('ajax-position'     ); if (elem) elem.textContent = degToString('N', 'S', lat) + ' ' +\n"
+"                                                                                      degToString('E', 'W', lng) + ' ' +\n"
+"                                                                                      hgtToString('H', 'D', hgt);\n"
+"   elem = document.getElementById('ajax-msl-above-wgs'); if (elem) elem.textContent = hgtToString('H', 'D', mslAboveWgs);\n"
+"   elem = document.getElementById('ajax-hgt-above-msl'); if (elem) elem.textContent = hgtToString('H', 'D', hgtAboveMsl);\n"
+"   elem = document.getElementById('ajax-gnd-above-msl'); if (elem) elem.textContent = hgtToString('H', 'D', hgtAboveMsl - sensorHeight * NMEA_HGT_UNIT);\n"
+"\n"
+"   elem = document.getElementById('ajax-dop'          ); if (elem) elem.textContent = dop / 100;\n"
+"   elem = document.getElementById('ajax-sat-count'    ); if (elem) elem.textContent = satCount;\n"
+"   elem = document.getElementById('ajax-fix-quality'  ); if (elem) elem.textContent = fixQuality;\n"
+"   \n"
+"   elem = document.getElementById('ajax-sensor-hgt'   ); if (elem) elem.value       = sensorHeight;\n"
+"   \n"
+"   elem = document.getElementById('ajax-bucket-count' ); if (elem) elem.textContent = bucketCount;\n"
+"   elem = document.getElementById('ajax-buckets' );      if (elem) elem.textContent = buckets;\n"
+"\n"
+"   elem = document.getElementById('ajax-response'     ); if (elem) elem.textContent = response;\n"
+"   elem = document.getElementById('ajax-headers'      ); if (elem) elem.textContent = headers;\n"
+"}\n"
+"\n"
+"var ajax;\n"
+"function AjaxRequest(request) //Used by this script and from HTML page\n"
+"{\n"
+"   ajax=new XMLHttpRequest();\n"
+"   ajax.onreadystatechange=handleAjaxResponse;\n"
+"   if (request) ajax.open('GET', '/nmea-ajax' + '?' + request, true);\n"
+"   else         ajax.open('GET', '/nmea-ajax'                , true);\n"
+"   ajax.send();\n"
+"}\n"
+"function requestAjax() //Used in this script\n"
+"{\n"
+"   AjaxRequest('');\n"
+"}\n"
+"\n"
+"function handleAjaxResponse()\n"
+"{\n"
+"   if (ajax.readyState==4 && ajax.status==200)\n"
+"   {\n"
+"       response = ajax.responseText;\n"
+"       headers  = ajax.getAllResponseHeaders();\n"
+"       parseAjax();\n"
+"       displayGeneral();\n"
+"   }\n"
+"}\n"
+"\n"
+"function init()\n"
+"{\n"
+"    setInterval(requestAjax, 10000);\n"
+"    requestAjax();\n"
+"}\n"
+"if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', init ); // Loading hasn't finished yet\n"
+"else                                                                                 init(); //`DOMContentLoaded` has already fired\n"
+""
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