Merge branch 'origin/dev'

main/config.cpp

@@ -27,7 +27,7 @@ single100a_config_t configDriverRight = {
     .pwmFreq = 10000
 };
 
-//configure motor contol
+//--- configure motor contol ---
 motorctl_config_t configMotorControl = {
     .msFade = 900,
     .currentMax = 10
@@ -39,6 +39,31 @@ controlledMotor motorRight(configDriverRight, configMotorControl);
 
 
 
+//------------------------------
+//------- control config -------
+//------------------------------
+control_config_t configControl = {
+    .defaultMode = controlMode_t::JOYSTICK, //default mode after startup and toggling IDLE
+    //--- timeout ---    
+    .timeoutMs = 5*60*1000,      //time of inactivity after which the mode gets switched to IDLE
+    .timeoutTolerancePer = 5,    //percentage the duty can vary between timeout checks considered still inactive
+    //--- http mode ---
+
+};
+
+
+
+//-------------------------------
+//----- httpJoystick config -----
+//-------------------------------
+httpJoystick_config_t configHttpJoystickMain{
+    .toleranceZeroX_Per = 3,  //percentage around joystick axis the coordinate snaps to 0
+    .toleranceZeroY_Per = 10,
+    .toleranceEndPer = 2,   //percentage before joystick end the coordinate snaps to 1/-1
+    .timeoutMs = 3000       //time no new data was received before the motors get turned off
+};
+
+
 
 //--------------------------------------
 //------- joystick configuration -------
@@ -46,10 +71,11 @@ controlledMotor motorRight(configDriverRight, configMotorControl);
 joystick_config_t configJoystick = {
     .adc_x = ADC1_CHANNEL_3, //GPIO39
     .adc_y = ADC1_CHANNEL_0, //GPIO36
-    //range around center-threshold of each axis the coordinates stays at 0 (adc value 0-4095)
+    //percentage of joystick range the coordinate of the axis snaps to 0 (0-100)
-    .tolerance_zero = 100,
+    .tolerance_zeroX_per = 7,
-    //threshold the coordinate snaps to -1 or 1 before configured "_max" or "_min" threshold (mechanical end) is reached (adc value 0-4095)
+    .tolerance_zeroY_per = 3,
-    .tolerance_end = 80,
+    //percentage of joystick range the coordinate snaps to -1 or 1 before configured "_max" or "_min" threshold (mechanical end) is reached (0-100)
+    .tolerance_end_per = 5, 
     //threshold the radius jumps to 1 before the stick is at max radius (range 0-1)
     .tolerance_radius = 0.05,
 
@@ -63,20 +89,11 @@ joystick_config_t configJoystick = {
     .y_inverted = true
 };
 
-//create global joystic instance
-evaluatedJoystick joystick(configJoystick);
-
-//create global evaluated switch instance for button next to joystick
-gpio_evaluatedSwitch buttonJoystick(GPIO_NUM_33, true, false); //pullup true, not inverted (switch to GND use pullup of controller)
-                                                               
-//create buzzer object on pin 12 with gap between queued events of 100ms 
-buzzer_t buzzer(GPIO_NUM_12, 100);
-
-//create global control object
-controlledArmchair control(&buzzer, &motorLeft, &motorRight);
 
 
-//configure fan contol
+//----------------------------
+//--- configure fan contol ---
+//----------------------------
 fan_config_t configFanLeft = {
     .gpio_fan = GPIO_NUM_2,
     .msRun = 5000,
@@ -88,3 +105,25 @@ fan_config_t configFanRight = {
     .dutyThreshold = 35
 };
 
+
+
+//=================================
+//===== create global objects =====
+//=================================
+//create global joystic instance
+evaluatedJoystick joystick(configJoystick);
+
+//create global evaluated switch instance for button next to joystick
+gpio_evaluatedSwitch buttonJoystick(GPIO_NUM_33, true, false); //pullup true, not inverted (switch to GND use pullup of controller)
+                                                               
+//create buzzer object on pin 12 with gap between queued events of 100ms 
+buzzer_t buzzer(GPIO_NUM_12, 100);
+
+//create global httpJoystick object
+httpJoystick httpJoystickMain(configHttpJoystickMain);
+
+//create global control object
+controlledArmchair control(configControl, &buzzer, &motorLeft, &motorRight, &httpJoystickMain);
+
+
+

main/config.hpp

@@ -8,6 +8,7 @@
 #include "buzzer.hpp"
 #include "control.hpp"
 #include "fan.hpp"
+#include "http.hpp"
 
 
 //create global controlledMotor instances for both motors
@@ -26,6 +27,9 @@ extern buzzer_t buzzer;
 //create global control object
 extern controlledArmchair control;
 
+//create global httpJoystick object
+extern httpJoystick httpJoystickMain;
+
 //configuration for fans
 extern fan_config_t configFanLeft;
 extern fan_config_t configFanRight;

main/control.cpp

@@ -12,7 +12,6 @@ extern "C"
 
 #include "config.hpp"
 #include "control.hpp"
-#include "http.hpp"
 
 
 //tag for logging
@@ -24,15 +23,23 @@ const char* controlModeStr[7] = {"IDLE", "JOYSTICK", "MASSAGE", "HTTP", "MQTT",
 //-------- constructor --------
 //-----------------------------
 controlledArmchair::controlledArmchair (
+        control_config_t config_f,
         buzzer_t * buzzer_f,
         controlledMotor* motorLeft_f,
-        controlledMotor* motorRight_f
+        controlledMotor* motorRight_f,
+        httpJoystick* httpJoystick_f
         ){
 
+    //copy configuration
+    config = config_f;
     //copy object pointers
     buzzer = buzzer_f;
     motorLeft = motorLeft_f;
     motorRight = motorRight_f;
+    httpJoystickMain_l = httpJoystick_f;
+    //set default mode from config
+    modePrevious = config.defaultMode;
+    
     //TODO declare / configure controlled motors here instead of config (unnecessary that button object is globally available - only used here)?
 }
 
@@ -83,38 +90,92 @@ void controlledArmchair::startHandleLoop() {
                 joystickData_t dataRead = { };
 
                 //--- get joystick data from queue ---
-                if( xQueueReceive( joystickDataQueue, &dataRead, pdMS_TO_TICKS(500) ) ) {
+                //Note this function waits several seconds (httpconfig.timeoutMs) for data to arrive, otherwise Center data or NULL is returned
-                    //reset timestamp lastAction
+                //TODO: as described above, when changing modes it might delay a few seconds for the change to apply
-                    http_timestamp_lastData = esp_log_timestamp();
+                dataRead = httpJoystickMain_l->getData();
-
-                    ESP_LOGD(TAG, "received data from http queue -> generating commands\n x=%.3f  y=%.3f  radius=%.3f  angle=%.3f",
-                            dataRead.x, dataRead.y, dataRead.radius, dataRead.angle);
-
                 //--- generate motor commands ---
-                    //pass received joystick data from http queue to generatecommands function from joystick.hpp
+                ESP_LOGD(TAG, "generating commands from x=%.3f  y=%.3f  radius=%.3f  angle=%.3f", dataRead.x, dataRead.y, dataRead.radius, dataRead.angle);
+                //Note: timeout (no data received) is handled in getData method
                 commands = joystick_generateCommandsDriving(dataRead);
 
                 //--- apply commands to motors ---
                 //TODO make motorctl.setTarget also accept motorcommand struct directly
                 motorRight->setTarget(commands.right.state, commands.right.duty); 
                 motorLeft->setTarget(commands.left.state, commands.left.duty); 
-                }
-
-                //--- timeout ---
-                //turn off motors when motor still on and no new data received for some time
-                if (
-                        (esp_log_timestamp() - http_timestamp_lastData > 3000) //no data received for x seconds
-                        && (commands.left.state != motorstate_t::IDLE || commands.right.state != motorstate_t::IDLE) //at least one motor is still running
-                   ){
-                    ESP_LOGE(TAG, "TIMEOUT - no data received for 3s -> stopping motors");
-                    //copy preset commands for idling both motors
-                    commands = cmds_bothMotorsIdle;
-                    motorRight->setTarget(commands.right.state, commands.right.duty); 
-                    motorLeft->setTarget(commands.left.state, commands.left.duty); 
-                }
-
                break;
-                //TODO: add other modes here
+
+              //  //TODO: add other modes here
+        }
+
+
+        //-----------------------
+        //------ slow loop ------
+        //-----------------------
+        //this section is run about every 5s (+500ms)
+        if (esp_log_timestamp() - timestamp_SlowLoopLastRun > 5000) {
+            ESP_LOGV(TAG, "running slow loop... time since last run: %.1fs", (float)(esp_log_timestamp() - timestamp_SlowLoopLastRun)/1000);
+            timestamp_SlowLoopLastRun = esp_log_timestamp();
+
+            //run function which detects timeout (switch to idle)
+            handleTimeout();
+        }
+
+    }//end while(1)
+}//end startHandleLoop
+
+
+
+//-----------------------------------
+//---------- resetTimeout -----------
+//-----------------------------------
+void controlledArmchair::resetTimeout(){
+    //TODO mutex
+    timestamp_lastActivity = esp_log_timestamp();
+}
+
+
+
+//------------------------------------
+//---------- handleTimeout -----------
+//------------------------------------
+float inactivityTolerance = 10; //percentage the duty can vary since last timeout check and still counts as incative
+
+//local function that checks whether two values differ more than a given tolerance
+bool validateActivity(float dutyOld, float dutyNow, float tolerance){
+    float dutyDelta = dutyNow - dutyOld;
+    if (fabs(dutyDelta) < tolerance) {
+        return false; //no significant activity detected
+    } else {
+        return true; //there was activity
+    }
+}
+
+//function that evaluates whether there is no activity/change on the motor duty for a certain time. If so, a switch to IDLE is issued. - has to be run repeatedly in a slow interval
+void controlledArmchair::handleTimeout(){
+    //check for timeout only when not idling already
+    if (mode != controlMode_t::IDLE) {
+        //get current duty from controlled motor objects
+        float dutyLeftNow = motorLeft->getStatus().duty;
+        float dutyRightNow = motorRight->getStatus().duty;
+
+        //activity detected on any of the two motors
+        if (validateActivity(dutyLeft_lastActivity, dutyLeftNow, inactivityTolerance) 
+                || validateActivity(dutyRight_lastActivity, dutyRightNow, inactivityTolerance)
+           ){
+            ESP_LOGD(TAG, "timeout check: detected [activity] since last check -> reset");
+            //reset last duty and timestamp
+            timestamp_lastActivity = esp_log_timestamp(); 
+            dutyLeft_lastActivity = dutyLeftNow;
+            dutyRight_lastActivity = dutyRightNow;
+        }
+        //no activity on any motor and msTimeout exceeded
+        else if (esp_log_timestamp() - timestamp_lastActivity > config.timeoutMs){
+            ESP_LOGI(TAG, "timeout check: [TIMEOUT], no activity for more than %.ds  -> switch to idle", config.timeoutMs/1000);
+            //toggle to idle mode
+            toggleIdle();
+        }
+        else {
+            ESP_LOGD(TAG, "timeout check: [inactive], last activity %.1f seconds ago", (float)(esp_log_timestamp() - timestamp_lastActivity)/1000);
         }
     }
 }
@@ -126,6 +187,9 @@ void controlledArmchair::startHandleLoop() {
 //-----------------------------------
 //function to change to a specified control mode
 void controlledArmchair::changeMode(controlMode_t modeNew) {
+    //reset timeout timer
+    resetTimeout();
+
     //copy previous mode
     controlMode_t modePrevious = mode;
 
@@ -161,6 +225,10 @@ void controlledArmchair::changeMode(controlMode_t modeNew) {
             ESP_LOGI(TAG, "noting to execute when changing TO this mode");
             break;
 
+        case controlMode_t::IDLE:
+            buzzer->beep(1, 1500, 0);
+            break;
+
         case controlMode_t::HTTP:
             ESP_LOGW(TAG, "switching to http mode -> enabling http and wifi");
             //start wifi
@@ -197,12 +265,11 @@ void controlledArmchair::toggleIdle() {
     if (mode == controlMode_t::IDLE){
         changeMode(modePrevious); //restore previous mode, or default if not switched yet
         buzzer->beep(2, 200, 100);
-        ESP_LOGW(TAG, "switched mode from IDLE to %s", controlModeStr[(int)mode]);
+        ESP_LOGW(TAG, "toggle idle: switched mode from IDLE to %s", controlModeStr[(int)mode]);
     } else {
         modePrevious = mode; //store current mode
         changeMode(controlMode_t::IDLE); //set mode to IDLE
-        buzzer->beep(1, 1000, 0);
+        ESP_LOGW(TAG, "toggle idle: switched mode from %s to IDLE", controlModeStr[(int)mode]);
-        ESP_LOGW(TAG, "switched mode from IDLE to %s", controlModeStr[(int)mode]);
     }
 }
 

main/control.hpp

@@ -3,13 +3,26 @@
 #include "motordrivers.hpp"
 #include "motorctl.hpp"
 #include "buzzer.hpp"
+#include "http.hpp"
 
 
+//--------------------------------------------
+//---- struct, enum, variable declarations ---
+//--------------------------------------------
 //enum that decides how the motors get controlled
 enum class controlMode_t {IDLE, JOYSTICK, MASSAGE, HTTP, MQTT, BLUETOOTH, AUTO};
-//extern controlMode_t mode;
+//string array representing the mode enum (for printing the state as string)
 extern const char* controlModeStr[7];
 
+//struct with config parameters
+typedef struct control_config_t {
+    controlMode_t defaultMode;  //default mode after startup and toggling IDLE
+    //--- timeout ---
+    uint32_t timeoutMs;         //time of inactivity after which the mode gets switched to IDLE
+    float timeoutTolerancePer;  //percentage the duty can vary between timeout checks considered still inactive
+} control_config_t;
+
+
 
 
 //==================================
@@ -21,9 +34,11 @@ class controlledArmchair {
     public:
         //--- constructor ---
         controlledArmchair (
+                control_config_t config_f,
                 buzzer_t* buzzer_f,
                 controlledMotor* motorLeft_f,
-                controlledMotor* motorRight_f
+                controlledMotor* motorRight_f,
+                httpJoystick* httpJoystick_f
                 );
 
         //--- functions ---
@@ -39,16 +54,26 @@ class controlledArmchair {
         //function that toggles between two modes, but prefers first argument if entirely different mode is currently active
         void toggleModes(controlMode_t modePrimary, controlMode_t modeSecondary);
 
+        //function that restarts timer which initiates the automatic timeout (switch to IDLE) after certain time of inactivity
+        void resetTimeout();
+
     private:
 
+        //--- functions ---
+        //function that evaluates whether there is no activity/change on the motor duty for a certain time, if so a switch to IDLE is issued. - has to be run repeatedly in a slow interval
+        void handleTimeout();
+
         //--- objects ---
         buzzer_t* buzzer;
         controlledMotor* motorLeft;
         controlledMotor* motorRight;
+        httpJoystick* httpJoystickMain_l;
 
         //---variables ---
         //struct for motor commands returned by generate functions of each mode
         motorCommands_t commands;
+        //struct with config parameters
+        control_config_t config;
 
         //variables for http mode
         uint32_t http_timestamp_lastData = 0;
@@ -57,7 +82,7 @@ class controlledArmchair {
         controlMode_t mode = controlMode_t::IDLE;
 
         //variable to store mode when toggling IDLE mode 
-        controlMode_t modePrevious = controlMode_t::JOYSTICK; //default mode
+        controlMode_t modePrevious; //default mode
 
         //command preset for idling motors
         const motorCommand_t cmd_motorIdle = {
@@ -68,6 +93,14 @@ class controlledArmchair {
             .left = cmd_motorIdle,
             .right = cmd_motorIdle
         };
+
+        //variable for slow loop
+        uint32_t timestamp_SlowLoopLastRun = 0;
+
+        //variables for detecting timeout (switch to idle, after inactivity)
+        float dutyLeft_lastActivity = 0;
+        float dutyRight_lastActivity = 0;
+        uint32_t timestamp_lastActivity = 0;
 };
 
 

main/http.cpp

@@ -3,7 +3,6 @@ extern "C"
 #include <stdio.h>
 #include "mdns.h"
 #include "cJSON.h"
-#include "esp_http_server.h"
 #include "esp_spiffs.h"
 #include "esp_wifi.h"
 #include "freertos/FreeRTOS.h"
@@ -14,14 +13,13 @@ extern "C"
 }
 
 #include "http.hpp"
-#include "joystick.hpp"
+#include "config.hpp"
 
 
 //tag for logging
 static const char * TAG = "http";
 static httpd_handle_t server = NULL;
 
-QueueHandle_t joystickDataQueue = xQueueCreate( 1, sizeof( struct joystickData_t ) );
 
 
 //joystickData_t http_readFromJoystickQueue
@@ -99,12 +97,25 @@ static esp_err_t on_default_url(httpd_req_t *req)
 
 
 
-//===============================
+//==============================
-//====== joystick endpoint ======
+//===== httpJoystick class =====
-//===============================
+//==============================
-//function that is called when data is received with post request at /api/joystick
+//-----------------------
-esp_err_t on_joystick_url(httpd_req_t *req)
+//----- constructor -----
-{
+//-----------------------
+httpJoystick::httpJoystick( httpJoystick_config_t config_f ){
+    //copy config struct
+    config = config_f;
+    //initialize queue for joystick data
+    QueueHandle_t joystickDataQueue = xQueueCreate( 1, sizeof( struct joystickData_t ) );
+}
+
+
+//--------------------------
+//---- receiveHttpData -----
+//--------------------------
+//joystick endpoint - function that is called when data is received with post request at /api/joystick
+esp_err_t httpJoystick::receiveHttpData(httpd_req_t *req){ 
     //--- add header ---
     //to allow cross origin (otherwise browser fails when app is running on another host)
     httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
@@ -122,8 +133,6 @@ esp_err_t on_joystick_url(httpd_req_t *req)
     //--- extract relevant items from json object ---
     cJSON *x_json = cJSON_GetObjectItem(payload, "x");  
     cJSON *y_json = cJSON_GetObjectItem(payload, "y");  
-    cJSON *radius_json = cJSON_GetObjectItem(payload, "radius");  
-    cJSON *angle_json = cJSON_GetObjectItem(payload, "angle");  
 
     //--- save items to struct ---
     joystickData_t data = { };
@@ -132,34 +141,87 @@ esp_err_t on_joystick_url(httpd_req_t *req)
     //convert json to double to float
     data.x = static_cast<float>(x_json->valuedouble);
     data.y = static_cast<float>(y_json->valuedouble);
-    data.radius = static_cast<float>(radius_json->valuedouble);
+    //log received and parsed values
-    data.angle = static_cast<float>(angle_json->valuedouble);
+    ESP_LOGI(TAG, "received values: x=%.3f  y=%.3f",
+            data.x, data.y);
 
-    //--- evaluate joystick position enum ---
+    // scaleCoordinate(input, min, max, center, tolerance_zero_per, tolerance_end_per)
+    data.x = scaleCoordinate(data.x+1, 0, 2, 1, config.toleranceZeroX_Per, config.toleranceEndPer); 
+    data.y = scaleCoordinate(data.y+1, 0, 2, 1, config.toleranceZeroY_Per, config.toleranceEndPer);
+
+    //--- calculate radius with new/scaled coordinates ---
+    data.radius = sqrt(pow(data.x,2) + pow(data.y,2));
+    //TODO: radius tolerance? (as in original joystick func)
+    //limit radius to 1
+    if (data.radius > 1) {
+        data.radius = 1;
+    }
+    //--- calculate angle ---
+    data.angle = (atan(data.y/data.x) * 180) / 3.141;
+    //--- evaluate position ---
     data.position = joystick_evaluatePosition(data.x, data.y);
 
-
+    //log processed values
-    //log received and parsed values
+    ESP_LOGI(TAG, "processed values: x=%.3f  y=%.3f  radius=%.3f  angle=%.3f  pos=%s",
-    ESP_LOGI(TAG, "parsed values from received json: \n x=%.3f  y=%.3f  radius=%.3f  angle=%.3f",
+            data.x, data.y, data.radius, data.angle, joystickPosStr[(int)data.position]);
-            data.x, data.y, data.radius, data.angle);
 
     //--- free memory ---
     cJSON_Delete(payload);
 
-
     //--- send data to control task via queue ---
     //xQueueSend( joystickDataQueue, ( void * )&data, ( TickType_t ) 0 );
     //changed to length = 1  -> overwrite - older values are no longer relevant
     xQueueOverwrite( joystickDataQueue, ( void * )&data );
 
-
     //--- return http response ---
     httpd_resp_set_status(req, "204 NO CONTENT");
     httpd_resp_send(req, NULL, 0);
+
     return ESP_OK;
 }
 
 
+//-------------------
+//----- getData -----
+//-------------------
+//wait for and return joystick data from queue, if timeout return NULL
+joystickData_t httpJoystick::getData(){
+
+    //--- get joystick data from queue ---
+    if( xQueueReceive( joystickDataQueue, &dataRead, pdMS_TO_TICKS(config.timeoutMs) ) ) {
+
+        ESP_LOGD(TAG, "getData: received data (from queue): x=%.3f  y=%.3f  radius=%.3f  angle=%.3f",
+                dataRead.x, dataRead.y, dataRead.radius, dataRead.angle);
+    }
+    //--- timeout ---
+    //no new data received within configured timeout
+    else { 
+        //send error message when last received data did NOT result in CENTER position
+        if (dataRead.position != joystickPos_t::CENTER) {
+            //change data to "joystick center" data to stop the motors
+            dataRead = dataCenter;
+            ESP_LOGE(TAG, "TIMEOUT - no data received for 3s -> set to center");
+        }
+    }
+    return dataRead;
+}
+
+
+
+//--------------------------------------------
+//--- receiveHttpData for httpJoystickMain ---
+//--------------------------------------------
+//function that wraps pointer to member function of httpJoystickMain instance in a "normal" function which the webserver can run on joystick URL
+
+//declare pointer to receiveHttpData method of httpJoystick class
+esp_err_t (httpJoystick::*pointerToReceiveFunc)(httpd_req_t *req) = &httpJoystick::receiveHttpData;
+
+esp_err_t on_joystick_url(httpd_req_t *req){
+    //run pointer to receiveHttpData function of httpJoystickMain instance
+    return (httpJoystickMain.*pointerToReceiveFunc)(req);
+}
+
+
 
 
 //============================
@@ -169,9 +231,6 @@ esp_err_t on_joystick_url(httpd_req_t *req)
 void http_init_server()
 {
 
-
-
-
     //configure webserver
   httpd_config_t config = HTTPD_DEFAULT_CONFIG();
   config.uri_match_fn = httpd_uri_match_wildcard;

main/http.hpp

@@ -1,6 +1,14 @@
 #pragma once
 
-extern QueueHandle_t joystickDataQueue;
+extern "C"
+{
+#include "esp_http_server.h"
+}
+
+#include "joystick.hpp"
+
+
+
 
 //============================
 //===== init http server =====
@@ -21,3 +29,43 @@ void start_mdns_service();
 //============================
 //function that destroys the http server
 void http_stop_server();
+
+
+//==============================
+//===== httpJoystick class =====
+//==============================
+//class that receices that from a HTTP post request, generates and scales joystick data and provides the data in a queue
+
+//struct with configuration parameters
+typedef struct httpJoystick_config_t {
+    float toleranceZeroX_Per;//percentage around joystick axis the coordinate snaps to 0
+    float toleranceZeroY_Per;
+    float toleranceEndPer; //percentage before joystick end the coordinate snaps to 1/-1
+    uint32_t timeoutMs;    //time no new data was received before the motors get turned off
+} httpJoystick_config_t;
+
+
+class httpJoystick{
+    public:
+        //--- constructor ---
+        httpJoystick( httpJoystick_config_t config_f );
+
+        //--- functions ---
+        joystickData_t getData(); //wait for and return joystick data from queue, if timeout return CENTER
+
+        esp_err_t receiveHttpData(httpd_req_t *req);  //function that is called when data is received with post request at /api/joystick
+
+    private:
+        //--- variables ---
+        httpJoystick_config_t config;
+        QueueHandle_t joystickDataQueue = xQueueCreate( 1, sizeof( struct joystickData_t ) );
+        //struct for receiving data from http function, and storing data of last update
+        joystickData_t dataRead;
+        const joystickData_t dataCenter = {
+            .position = joystickPos_t::CENTER,
+            .x = 0,
+            .y = 0,
+            .radius = 0,
+            .angle = 0
+        };
+};

main/joystick.cpp

@@ -68,50 +68,6 @@ int evaluatedJoystick::readAdc(adc1_channel_t adc_channel, bool inverted) {
 
 
 
-//----------------------------
-//------ getCoordinate -------
-//----------------------------
-//function to read voltage at a gpio pin and scale it to a value from -1 to 1 using the given thresholds and tolerances
-float evaluatedJoystick::getCoordinate(adc1_channel_t adc_channel, bool inverted, int min, int max, int center, int tolerance_zero, int tolerance_end) {
-
-    float coordinate = 0;
-
-    //read voltage from adc
-    int input = readAdc(adc_channel, inverted);
-
-    //define coordinate value considering the different tolerances
-    //--- center ---
-    if ((input < center+tolerance_zero) && (input > center-tolerance_zero) ) { //adc value is inside tolerance around center threshold
-        coordinate = 0;
-    }
-    //--- maximum ---
-    else if (input > max-tolerance_end) {
-        coordinate = 1;
-    }
-    //--- minimum ---
-    else if (input < min+tolerance_end) {
-        coordinate = -1;
-    }
-    //--- positive area ---
-    else if (input > center) {
-        float range = max - center - tolerance_zero - tolerance_end;
-        coordinate = (input - center - tolerance_end) / range;
-    }
-    //--- negative area ---
-    else if (input < center) {
-        float range = (center - min - tolerance_zero - tolerance_end);
-        coordinate = -(center-input - tolerance_end) / range;
-    }
-
-    ESP_LOGD(TAG, "coordinate=%.3f, input=%d/4095, isInverted=%d", coordinate, input, inverted);
-    //return coordinate (-1 to 1)
-    return coordinate;
-
-}
-
-
-
-
 //-------------------------------
 //---------- getData ------------
 //-------------------------------
@@ -120,10 +76,11 @@ joystickData_t evaluatedJoystick::getData() {
     //get coordinates
     //TODO individual tolerances for each axis? Otherwise some parameters can be removed
     ESP_LOGD(TAG, "getting X coodrinate...");
-    float x = getCoordinate(config.adc_x, config.x_inverted, config.x_min, config.x_max, x_center,  config.tolerance_zero, config.tolerance_end);
+    float x = scaleCoordinate(readAdc(config.adc_x, config.x_inverted), config.x_min, config.x_max, x_center,  config.tolerance_zeroX_per, config.tolerance_end_per);
     data.x = x;
+
     ESP_LOGD(TAG, "getting Y coodrinate...");
-    float y = getCoordinate(config.adc_y, config.y_inverted, config.y_min, config.y_max, y_center,  config.tolerance_zero, config.tolerance_end);
+    float y = scaleCoordinate(readAdc(config.adc_y, config.y_inverted), config.y_min, config.y_max, y_center,  config.tolerance_zeroY_per, config.tolerance_end_per);
     data.y = y;
 
     //calculate radius
@@ -159,6 +116,53 @@ void evaluatedJoystick::defineCenter(){
 
 
 
+
+
+//==============================
+//====== scaleCoordinate =======
+//==============================
+//function that scales an input value (e.g. from adc pin) to a value from -1 to 1 using the given thresholds and tolerances
+float scaleCoordinate(float input, float min, float max, float center, float tolerance_zero_per, float tolerance_end_per) {
+
+    float coordinate = 0;
+
+    //convert tolerance percentages to actual values of range
+    double tolerance_zero = (max-min) * tolerance_zero_per / 100;
+    double tolerance_end = (max-min) * tolerance_end_per / 100;
+
+    //define coordinate value considering the different tolerances
+    //--- center ---
+    if ((input < center+tolerance_zero) && (input > center-tolerance_zero) ) { //adc value is inside tolerance around center threshold
+        coordinate = 0;
+    }
+    //--- maximum ---
+    else if (input > max-tolerance_end) {
+        coordinate = 1;
+    }
+    //--- minimum ---
+    else if (input < min+tolerance_end) {
+        coordinate = -1;
+    }
+    //--- positive area ---
+    else if (input > center) {
+        float range = max - center - tolerance_zero - tolerance_end;
+        coordinate = (input - center - tolerance_zero) / range;
+    }
+    //--- negative area ---
+    else if (input < center) {
+        float range = (center - min - tolerance_zero - tolerance_end);
+        coordinate = -(center-input - tolerance_zero) / range;
+    }
+
+    ESP_LOGD(TAG, "scaled coordinate from %.3f to %.3f, tolZero=%.3f, tolEnd=%.3f", input, coordinate, tolerance_zero, tolerance_end);
+    //return coordinate (-1 to 1)
+    return coordinate;
+
+}
+
+
+
+
 //=============================================
 //========= joystick_evaluatePosition =========
 //=============================================

main/joystick.hpp

@@ -31,10 +31,11 @@ typedef struct joystick_config_t {
     adc1_channel_t adc_x;
     adc1_channel_t adc_y;
 
-    //range around center-threshold of each axis the coordinates stays at 0 (adc value 0-4095)
+    //percentage of joystick range the coordinate of the axis snaps to 0 (0-100)
-    int tolerance_zero;
+    int tolerance_zeroX_per;
-    //threshold the coordinate snaps to -1 or 1 before configured "_max" or "_min" threshold (mechanical end) is reached (adc value 0-4095)
+    int tolerance_zeroY_per;
-    int tolerance_end;
+    //percentage of joystick range the coordinate snaps to -1 or 1 before configured "_max" or "_min" threshold (mechanical end) is reached (0-100)
+    int tolerance_end_per;
     //threshold the radius jumps to 1 before the stick is at max radius (range 0-1)
     float tolerance_radius;
 
@@ -86,8 +87,6 @@ class evaluatedJoystick {
         void init();
         //read adc while making multiple samples with option to invert the result
         int readAdc(adc1_channel_t adc_channel, bool inverted = false); 
-        //read input voltage and scale to value from -1 to 1 using the given thresholds and tolerances
-        float getCoordinate(adc1_channel_t adc_channel, bool inverted, int min, int max, int center, int tolerance_zero, int tolerance_end);
 
         //--- variables ---
         joystick_config_t config;
@@ -111,9 +110,15 @@ class evaluatedJoystick {
 motorCommands_t joystick_generateCommandsDriving(joystickData_t data );
 
 
+//==============================
+//====== scaleCoordinate =======
+//==============================
+//function that scales an input value (e.g. from adc pin) to a value from -1 to 1 using the giben thresholds and tolerances
+float scaleCoordinate(float input, float min, float max, float center, float tolerance_zero_per, float tolerance_end_per);
 
-//============================================
+
-//========= joystick_CommandsDriving =========
+//=============================================
-//============================================
+//========= joystick_evaluatePosition =========
+//=============================================
 //function that defines and returns enum joystickPos from x and y coordinates
 joystickPos_t joystick_evaluatePosition(float x, float y);

main/main.cpp

@@ -169,7 +169,7 @@ extern "C" void app_main(void) {
     //--- create task for control ---
     //-------------------------------
     //task that generates motor commands depending on the current mode and sends those to motorctl task
-    xTaskCreate(&task_control, "task_control", 2048, NULL, 5, NULL);
+    xTaskCreate(&task_control, "task_control", 4096, NULL, 5, NULL);
 
     //------------------------------
     //--- create task for button ---

react-app/public/index.html

@@ -10,7 +10,7 @@
     />
     <title>armchair ctl</title>
   </head>
-  <body>
+  <body style="background-color:#001427; color:white;">
     <noscript>You need to enable JavaScript to run this app.</noscript>
     <div id="root"></div>
     <!--

react-app/src/App.js

@@ -7,11 +7,9 @@ import React, { useState} from 'react';
 
 function App() {
     //declare variables that can be used and updated in html
-    const [angle_html, setAngle_html] = useState(0);
     const [x_html, setX_html] = useState(0);
     const [y_html, setY_html] = useState(0);
     const [ip, setIp] = useState("10.0.0.66");
-    const [radius_html, setRadius_html] = useState(0);
 
 
 
@@ -19,7 +17,7 @@ function App() {
     //=========== config ============
     //===============================
     const decimalPlaces = 3;
-    const joystickSize = 200; //affects scaling of coordinates and size of joystick on website
+    const joystickSize = 250; //affects scaling of coordinates and size of joystick on website
     const throttle = 300; //throtthe interval the joystick sends data while moving (ms)
     const toleranceSnapToZeroPer = 20;//percentage of moveable range the joystick can be moved from the axix and value stays at 0
 
@@ -33,7 +31,7 @@ function App() {
     // - snaps 0 zero for a given tolerance in percent
     // - rounds value do given decimal places
     // - TODO: add threshold it snaps to 1 / -1 (100%) toleranceEnd
-    const ScaleCoordinate = (input) => {
+    const ScaleCoordinateTolerance = (input) => {
         //calc tolerance threshold and available range
         const tolerance = joystickSize/2 * toleranceSnapToZeroPer/100;
         const range = joystickSize/2 - tolerance;
@@ -61,6 +59,15 @@ function App() {
 
 
 
+    //----------------------------------------
+    //----------- Scale coordinate -----------
+    //----------------------------------------
+    //simply scale coordinate from joystick to a value of -1 to 1 without applying any tolerances
+    const ScaleCoordinate = (input) => {
+        return ( input / (joystickSize/2) ).toFixed(decimalPlaces);
+    }
+
+
 
     //-------------------------------------------
     //------- Senda data via POST request -------
@@ -106,27 +113,26 @@ function App() {
     //evaluate coordinates and send to esp32
     const handleMove = (e) => {
         //console.log("data from joystick-element X:" + e.x + " Y:" + e.y + " distance:" + e.distance);
-        //calculate needed variables
+        
+        //--- convert coordinates ---
+        //Note: tolerance (snap to zero) now handled by controller -> send raw coordinates
+        //const x = ScaleCoordinateTolerance(e.x);
+        //const y = ScaleCoordinateTolerance(e.y);
         const x = ScaleCoordinate(e.x);
         const y = ScaleCoordinate(e.y);
-        const radius = (e.distance / 100).toFixed(5);
-        const angle = ( Math.atan( y / x ) * 180 / Math.PI ).toFixed(2);
 
-        //crate object with necessary data
+        //create object with necessary data
         const joystick_data={
             x: x,
-            y: y,
+            y: y
-            radius: radius, 
-            angle: angle
         }
+
         //send object with joystick data as json to controller
         httpSendObject(joystick_data);
 
         //update variables for html
         setX_html(joystick_data.x);
         setY_html(joystick_data.y);
-        setRadius_html(joystick_data.radius);
-        setAngle_html(joystick_data.angle);
     };
 
 
@@ -139,15 +145,11 @@ function App() {
         const joystick_data={
             x: 0,
             y: 0,
-            radius: 0,
-            angle: 0
         }
 
         //update variables for html
         setX_html(0);
         setY_html(0);
-        setRadius_html(0);
-        setAngle_html(0);
         //send object with joystick data as json to controller
         httpSendObject(joystick_data);
     };
@@ -162,14 +164,14 @@ function App() {
 
         <div style={{display:'flex', justifyContent:'center', alignItems:'center', height:'100vh'}}>
             <div>
-                <div style={{position: 'absolute', top: '0'}}>
+                <div style={{position: 'absolute', top: '0', left: '0', width: '100%'}}>
-                    <h1>Joystick ctl</h1>
+                    <h1 style={{width:'100%', textAlign:'center'}}>Armchair ctl</h1>
                 </div>
                 <Joystick 
                     size={joystickSize} 
                     sticky={false} 
-                    baseColor="red" 
+                    baseColor="#8d0801" 
-                    stickColor="blue" 
+                    stickColor="#708d81" 
                     throttle={throttle}
                     move={handleMove} 
                     stop={handleStop}
@@ -178,8 +180,6 @@ function App() {
                 <ul>
                     <li> x={x_html} </li>
                     <li> y={y_html} </li>
-                    <li> radius={radius_html} </li>
-                    <li> angle={angle_html} </li>
                 </ul>
             </div>
         </div>