betaflight/tabs/receiver.js

function tab_initialize_receiver() {
    ga_tracker.sendAppView('Receiver Page');
    GUI.active_tab = 'receiver';
    
    send_message(MSP_codes.MSP_RC_TUNING, MSP_codes.MSP_RC_TUNING, false, function() {
        send_message(MSP_codes.MSP_RC, MSP_codes.MSP_RC, false, function() {
            $('#content').load("./tabs/receiver.html", function() {
                // fill in data from RC_tuning
                $('.tunings .throttle input[name="mid"]').val(RC_tuning.throttle_MID.toFixed(2));
                $('.tunings .throttle input[name="expo"]').val(RC_tuning.throttle_EXPO.toFixed(2));

                $('.tunings .rate input[name="rate"]').val(RC_tuning.RC_RATE.toFixed(2));
                $('.tunings .rate input[name="expo"]').val(RC_tuning.RC_EXPO.toFixed(2));
                
                // Setup plot variables and plot it self
                var samples_i = 300;
                
                RX_plot_data = new Array(8);
                for (var i = 0; i < 8; i++) {
                    RX_plot_data[i] = new Array();
                }    

                for (var i = 0; i <= 300; i++) {
                    RX_plot_data[0].push([i, 0]);
                    RX_plot_data[1].push([i, 0]);
                    RX_plot_data[2].push([i, 0]);
                    RX_plot_data[3].push([i, 0]);
                    RX_plot_data[4].push([i, 0]); 
                    RX_plot_data[5].push([i, 0]); 
                    RX_plot_data[6].push([i, 0]); 
                    RX_plot_data[7].push([i, 0]); 
                }
                
                e_RX_plot = document.getElementById("RX_plot");
                
                RX_plot_options = {
                    title: "Channel width (us)",
                    shadowSize: 0,
                    yaxis : {
                        max: 2200,
                        min: 800,
                        noTicks: 10
                    },
                    xaxis : {
                        //noTicks = 0
                    },
                    grid : {
                        backgroundColor: "#FFFFFF"
                    },
                    legend : {
                        position: "we",
                        backgroundOpacity: 0
                    }        
                }; 
                
                // UI Hooks
                
                // curves    
                $('.tunings .throttle input').change(function() {
                    setTimeout(function() {
                        var mid = parseFloat($('.tunings .throttle input[name="mid"]').val());
                        var expo = parseFloat($('.tunings .throttle input[name="expo"]').val());
                        
                        var throttle_curve = $('.throttle_curve canvas').get(0);
                        var context = throttle_curve.getContext("2d");
                        context.clearRect(0, 0, 220, 58);
                        
                        // math magic by englishman
                        var midx = 220 * mid;
                        var midxl = midx * .5;
                        var midxr = (((220 - midx) * .5) + midx);
                        var midy = 58 - (midx * (58 / 220));
                        var midyl = 58 - ((58 - midy) * .5 *(expo + 1));
                        var midyr = (midy / 2) * (expo + 1);        
                        
                        context.beginPath();
                        context.moveTo(0, 58);
                        context.quadraticCurveTo(midxl, midyl, midx, midy);
                        context.moveTo(midx, midy);
                        context.quadraticCurveTo(midxr, midyr, 220, 0);     
                        
                        context.lineWidth = 2;
                        context.stroke();
                    }, 0); // race condition, that should always trigger after all events are processed
                }).change();
                
                $('.tunings .rate input').change(function() {
                    setTimeout(function() {
                        var rate = parseFloat($('.tunings .rate input[name="rate"]').val());
                        var expo = parseFloat($('.tunings .rate input[name="expo"]').val());  
                        
                        var pitch_roll_curve = $('.pitch_roll_curve canvas').get(0);
                        var context = pitch_roll_curve.getContext("2d");
                        context.clearRect(0, 0, 220, 58);
                        
                        // math magic by englishman
                        var ratey = 58 * rate;
                        
                        context.beginPath();
                        context.moveTo(0, 58);
                        context.quadraticCurveTo(110, 58 - ((ratey / 2) * (1 - expo)), 220, 58 - ratey);
                        context.lineWidth = 2;
                        context.stroke();
                    }, 0); // race condition, that should always trigger after all events are processed
                }).change();
                
                $('a.refresh').click(function() {
                    send_message(MSP_codes.MSP_RC_TUNING, MSP_codes.MSP_RC_TUNING, false, function() {
                        // fill in data from RC_tuning
                        $('.tunings .throttle input[name="mid"]').val(RC_tuning.throttle_MID.toFixed(2));
                        $('.tunings .throttle input[name="expo"]').val(RC_tuning.throttle_EXPO.toFixed(2));

                        $('.tunings .rate input[name="rate"]').val(RC_tuning.RC_RATE.toFixed(2));
                        $('.tunings .rate input[name="expo"]').val(RC_tuning.RC_EXPO.toFixed(2));
                        
                        // update visual representation
                        $('.tunings .throttle input').change();
                        $('.tunings .rate input').change();
                    });
                });
                
                $('a.update').click(function() {
                    // catch RC_tuning changes
                    RC_tuning.throttle_MID = parseFloat($('.tunings .throttle input[name="mid"]').val());
                    RC_tuning.throttle_EXPO = parseFloat($('.tunings .throttle input[name="expo"]').val());
                    
                    RC_tuning.RC_RATE = parseFloat($('.tunings .rate input[name="rate"]').val());
                    RC_tuning.RC_EXPO = parseFloat($('.tunings .rate input[name="expo"]').val());              
                    
                    var RC_tuning_buffer_out = new Array();
                    RC_tuning_buffer_out[0] = parseInt(RC_tuning.RC_RATE * 100);
                    RC_tuning_buffer_out[1] = parseInt(RC_tuning.RC_EXPO * 100);
                    RC_tuning_buffer_out[2] = parseInt(RC_tuning.roll_pitch_rate * 100);
                    RC_tuning_buffer_out[3] = parseInt(RC_tuning.yaw_rate * 100);
                    RC_tuning_buffer_out[4] = parseInt(RC_tuning.dynamic_THR_PID * 100);
                    RC_tuning_buffer_out[5] = parseInt(RC_tuning.throttle_MID * 100);
                    RC_tuning_buffer_out[6] = parseInt(RC_tuning.throttle_EXPO * 100);
                    
                    // Send over the RC_tuning changes
                    send_message(MSP_codes.MSP_SET_RC_TUNING, RC_tuning_buffer_out);        

                    // Save changes to EEPROM
                    send_message(MSP_codes.MSP_EEPROM_WRITE, MSP_codes.MSP_EEPROM_WRITE, false, function() {
                        GUI.log('EEPROM <span style="color: green">saved</span>');
                        
                        var element = $('a.update');
                        element.addClass('success');
                        
                        GUI.timeout_add('success_highlight', function() {
                            element.removeClass('success');
                        }, 2000);
                    });
                });
                
                // enable RC data pulling
                GUI.interval_add('receiver_poll', function() {
                    // Update UI with latest data
                    $('.tab-receiver meter:eq(0)').val(RC.throttle);
                    $('.tab-receiver .value:eq(0)').html(RC.throttle);
                    
                    $('.tab-receiver meter:eq(1)').val(RC.pitch);
                    $('.tab-receiver .value:eq(1)').html(RC.pitch);
                    
                    $('.tab-receiver meter:eq(2)').val(RC.roll);
                    $('.tab-receiver .value:eq(2)').html(RC.roll);
                    
                    $('.tab-receiver meter:eq(3)').val(RC.yaw);
                    $('.tab-receiver .value:eq(3)').html(RC.yaw);
                    
                    
                    $('.tab-receiver meter:eq(4)').val(RC.AUX1);
                    $('.tab-receiver .value:eq(4)').html(RC.AUX1);
                    
                    $('.tab-receiver meter:eq(5)').val(RC.AUX2);
                    $('.tab-receiver .value:eq(5)').html(RC.AUX2);
                    
                    $('.tab-receiver meter:eq(6)').val(RC.AUX3);
                    $('.tab-receiver .value:eq(6)').html(RC.AUX3);
                    
                    $('.tab-receiver meter:eq(7)').val(RC.AUX4);
                    $('.tab-receiver .value:eq(7)').html(RC.AUX4);
                    
                    // push latest data to the main array
                    RX_plot_data[0].push([samples_i, RC.throttle]);
                    RX_plot_data[1].push([samples_i, RC.pitch]);
                    RX_plot_data[2].push([samples_i, RC.roll]);
                    RX_plot_data[3].push([samples_i, RC.yaw]);
                    RX_plot_data[4].push([samples_i, RC.AUX1]);
                    RX_plot_data[5].push([samples_i, RC.AUX2]);
                    RX_plot_data[6].push([samples_i, RC.AUX3]);
                    RX_plot_data[7].push([samples_i, RC.AUX4]);        

                    // Remove old data from array
                    while (RX_plot_data[0].length > 300) {
                        RX_plot_data[0].shift();
                        RX_plot_data[1].shift();
                        RX_plot_data[2].shift();
                        RX_plot_data[3].shift();
                        RX_plot_data[4].shift();
                        RX_plot_data[5].shift();
                        RX_plot_data[6].shift();
                        RX_plot_data[7].shift();
                    };
                    
                    // redraw plot
                    Flotr.draw(e_RX_plot, [
                        {data: RX_plot_data[0], label: "THROTTLE"}, 
                        {data: RX_plot_data[1], label: "PITCH"},
                        {data: RX_plot_data[2], label: "ROLL"},
                        {data: RX_plot_data[3], label: "YAW"},
                        {data: RX_plot_data[4], label: "AUX1"},
                        {data: RX_plot_data[5], label: "AUX2"},
                        {data: RX_plot_data[6], label: "AUX3"},
                        {data: RX_plot_data[7], label: "AUX4"} ], RX_plot_options);
                        
                    samples_i++;
                    
                    // Request new data
                    send_message(MSP_codes.MSP_STATUS, MSP_codes.MSP_STATUS);
                    send_message(MSP_codes.MSP_RC, MSP_codes.MSP_RC);
                }, 50, true);
            });
        });
    });
}