Use MSPV2_SET_SETTING to set small_angle to 180 on FW presets

- Add a json file with the types of all settings, generated by
the settings generator on INAV.
- Implement MSPV2_SETTING and MSPV2_SET_SETTING, which gives us
access to any value exposed via settings.
- Use this to set small_angle to 180 in FW presets.

gulpfile.js

@@ -190,6 +190,7 @@ gulp.task('dist-build', ['build'], function() {
         './build/*',
         './src/css/font-awesome/fonts/*',
         './src/css/opensans_webfontkit/*.{eot,svg,ttf,woff,woff2}',
+        './resources/*.json',
         './resources/models/*',
         './resources/osd/*.mcm',
         './resources/motor_order/*.svg',

js/msp.js

@@ -283,6 +283,7 @@ var MSP = {
 
         switch (this.protocolVersion) {
             case this.constants.PROTOCOL_V1:
+                // TODO: Error if code is < 255 and MSPv1 is requested
                 length = payloadLength + 6;
                 buffer = new ArrayBuffer(length);
                 view = new Uint8Array(buffer);

js/msp/MSPCodes.js

@@ -140,5 +140,9 @@ var MSPCodes = {
     MSP_BF_CONFIG:             66, // baseflight-specific settings that aren't covered elsewhere
     MSP_SET_BF_CONFIG:         67, // baseflight-specific settings save
     MSP_SET_REBOOT:         68, // reboot settings
-    MSP_BF_BUILD_INFO:          69  // build date as well as some space for future expansion
+    MSP_BF_BUILD_INFO:          69,  // build date as well as some space for future expansion
+
+    // INAV specific codes
+    MSPV2_SETTING:          0x1003,
+    MSPV2_SET_SETTING:      0x1004,
 };

js/msp/MSPHelper.js

@@ -1063,6 +1063,11 @@ var mspHelper = (function (gui) {
             case MSPCodes.MSP_OSD_CHAR_WRITE:
                 console.log('OSD char uploaded');
                 break;
+            case MSPCodes.MSPV2_SETTING:
+                break;
+            case MSPCodes.MSPV2_SET_SETTING:
+                console.log("Setting set");
+                break;
             default:
                 console.log('Unknown code detected: ' + dataHandler.code);
         } else {
@@ -2240,5 +2245,113 @@ var mspHelper = (function (gui) {
         }
     };
 
+    self._getSetting = function(name) {
+        if (!this._settings) {
+            var $this = this;
+            $.ajax({
+                url: chrome.extension.getURL('/resources/settings.json'),
+                dataType: 'json',
+                async: false,
+                success: function(data) {
+                    $this._settings = data;
+                }
+            });
+        }
+        return this._settings[name];
+    };
+
+    self._encodeSettingName = function(name, data) {
+        for (var ii = 0; ii < name.length; ii++) {
+            data.push(name.charCodeAt(ii));
+        }
+        data.push(0);
+    };
+
+    self.getSetting = function(name, callback) {
+        var setting = this._getSetting(name);
+        var data = [];
+        this._encodeSettingName(name, data);
+        MSP.send_message(MSPCodes.MSPV2_SETTING, data, false, function(resp) {
+            var value;
+            switch (setting.type) {
+                case "uint8_t":
+                    value = resp.data.getUint8(0);
+                    break;
+                case "int8_t":
+                    value = resp.data.getInt8(0);
+                    break;
+                case "uint16_t":
+                    value = resp.data.getUint16(0, true);
+                    break;
+                case "int16_t":
+                    value = resp.data.getInt16(0, true);
+                    break;
+                case "uint32_t":
+                    value = resp.data.getUint32(0, true);
+                    break;
+                case "float":
+                    var fi32 = resp.data.getUint32(0, true);
+                    var buf = new ArrayBuffer(4);
+                    (new Uint32Array(buf))[0] = fi32;
+                    value = (new Float32Array(buf))[0];
+                    break;
+                default:
+                    throw "Unknown setting type " + setting.type;
+            }
+            if (setting.table) {
+                value = setting.table.values[value];
+            }
+            if (callback) {
+                callback(value, setting);
+            }
+        });
+    };
+
+    self.encodeSetting = function(name, value) {
+        var setting = this._getSetting(name);
+        if (setting.table) {
+            var found = false;
+            for (var ii = 0; ii < setting.table.values.length; ii++) {
+                if (setting.table.values[ii] == value) {
+                    value = ii;
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                throw 'Invalid value "' + value + '" for setting ' + name;
+            }
+        }
+        var data = [];
+        this._encodeSettingName(name, data);
+        switch (setting.type) {
+            case "uint8_t":
+            case "int8_t":
+                data.push8(value);
+                break;
+            case "uint16_t":
+            case "int16_t":
+                data.push16(value);
+                break;
+            case "uint32_t":
+                data.push32(value);
+                break;
+            case "float":
+                var buf = new ArrayBuffer(4);
+                (new Float32Array(buf))[0] = value;
+                var if32 = (new Uint32Array(buf))[0];
+                data.push32(if32);
+                break;
+            default:
+                throw "Unknown setting type " + setting.type;
+        }
+        return data;
+    };
+
+    self.setSetting = function(name, value, callback) {
+        var data = this.encodeSetting(name, value);
+        MSP.send_message(MSPCodes.MSPV2_SET_SETTING, data, false, callback);
+    };
+
     return self;
 })(GUI);

tabs/profiles.js

@@ -44,6 +44,27 @@ presets.defaultValues = {
     FC_CONFIG: {"loopTime": 2000}
 };
 
+presets.settings = {
+    COMMON: {
+
+    },
+    FW: {
+        "small_angle": 180,
+    },
+    MR: {
+    },
+    get: function(mixerType) {
+        var settings = {};
+        $.extend(settings, presets.settings.COMMON);
+        if (mixerType == 'multirotor') {
+            $.extend(settings, presets.settings.MR);
+        } else {
+            $.extend(settings, presets.settings.FW);
+        }
+        return settings;
+    },
+}
+
 /*
  * When defining a preset, following fields are required:
  *
@@ -505,7 +526,17 @@ TABS.profiles.initialize = function (callback, scrollPosition) {
                 window[setting.group][setting.field] = setting.value;
             }
         }
+        var promises = {};
+        if (semver.gt(CONFIG.flightControllerVersion, '1.7.3')) {
+            var settings = presets.settings.get(currentPreset.type);
+            Object.keys(settings).forEach(function(key, ii) {
+                var value = settings[key];
+                promises[key] = MSP.promise(MSPCodes.MSPV2_SET_SETTING, mspHelper.encodeSetting(key, value));
+            });
+        }
+        Promise.props(promises).then(function () {
             saveChainer.execute();
+        });
     }
 
     function fillPresetDescription(preset) {