moved files, this in on callback for httpserver class

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "lib/PCA9685-Arduino"]
+	path = lib/PCA9685-Arduino
+	url = https://github.com/NachtRaveVL/PCA9685-Arduino

.vscode/settings.json

@@ -48,5 +48,6 @@
         "streambuf": "cpp",
         "cinttypes": "cpp",
         "typeinfo": "cpp"
-    }
+    },
+    "python.pythonPath": "C:\\Users\\simon\\AppData\\Local\\Programs\\Python\\Python37\\python.exe"
 }

doku.md

@@ -54,6 +54,12 @@ else
     server.streamFile(f, mime::getContentType(SRH::_path), requestMethod);
 ```
 
+LED_sequence_v1:
+TODO: 
+- disable led stripes after defined time (webserver paramter?)
+- define what to do if people enter stairs from different directions
+- CAUTION: Sensor-Deadtime at LEAST 8 seconds
+- --> switch off with person leaving stairs might not be possible
 
 Webserver on v0.3.0 now working with LittleFS
 TODO:
@@ -66,3 +72,6 @@ LED Flickering issue
 https://github.com/NachtRaveVL/PCA9685-Arduino/issues/15
 
 PlatformIO Library veraltet
+
+
+###TIMER in OTA unterbrechen !!!!!

include/ota.h

@@ -1,5 +1,8 @@
-#ifndef __OTA_H
+#pragma once
-#define __OTA_H
+
+#include <ESP8266WiFi.h>
+#include <WiFiUdp.h>
+#include <ArduinoOTA.h>
 
 void ota_setup() {
   ArduinoOTA.setPort(8266);
@@ -42,7 +45,4 @@ void ota_setup() {
   });
   ArduinoOTA.begin();
 
-}
+}
-
-
-#endif // __OTA_H

include/pwm.h

@@ -1,38 +0,0 @@
-#pragma once
-
-#include "PCA9685.h"
-
-class Treppe {
-    private:
-    uint8_t stairs;
-    uint16_t time_per_stair = 300;          // dimmtime per stair [ms]
-    uint16_t idle_brightness = 200;
-    uint16_t active_brightness = 2048;
-
-    uint8_t direction = 0;
-    uint8_t state = 0;
-    uint8_t switch_state = 0;
-
-
-    PCA9685 pwmController;
-    uint8_t softstart_led(uint8_t led, uint16_t startval, uint16_t stopval);
-    void ledsequence();
-
-    public:
-    Treppe(uint8_t _stairs) : stairs(_stairs){}
-    void task();        // call periodically
-
-    void setup();
-
-    // Parameter section
-    uint16_t setIdle(uint16_t _idle_brightness);
-    uint16_t setActive(uint16_t _active_brightness);
-    uint16_t setTime(uint16_t _time_per_stair);
-
-    // Runtime Parameter section
-    uint8_t setDirection(uint8_t _direction);
-    uint8_t setState(uint8_t _state);
-
-    uint8_t getState() { return state;};
-    uint8_t getDirection() {return direction;};
-};

lib/httpserver/filesys.cpp

@@ -4,7 +4,7 @@
 // deleteFile("/hello.txt");
 // writeFile("/hello.txt", "Hello ");
 // appendFile("/hello.txt", "World!\n\r");
-// readFile("/hello.txt");
+// printFile("/hello.txt");
 // listDir("/");
 
 FSInfo fsinfo;
@@ -58,7 +58,12 @@ void ls(const char * dirname) {
   Serial.println();
 }
 
-void readFile(const char * path) {
+File open(const char * path) {
+  return LittleFS.open(path, "r");
+}
+
+
+void printFile(const char * path) {
   Serial.printf("Reading file: %s\n\r", path);
 
   File file = LittleFS.open(path, "r");

lib/httpserver/filesys.h

@@ -1,16 +1,15 @@
-#ifndef __FILESYS_H
+#pragma once
-#define __FILESYS_H
 
 #include <LittleFS.h>
 
 bool mount_fs();
 bool format_fs();
 
+File open(const char * path);
+
 void ls(const char * dirname);
-void readFile(const char * path);
+void printFile(const char * path);
 void writeFile(const char * path, const char * message);
 void appendFile(const char * path, const char * message);
 void renameFile(const char * path1, const char * path2);
 void deleteFile(const char * path);
-
-#endif // __FILESYS_H

lib/httpserver/httpserver.cpp

@@ -14,4 +14,4 @@ bool HTTPServer::addRootFileHandler() {
   this->serveStatic("/favicon.png", LittleFS, "/favicon.png");
 
   return true;
-}
+}

lib/httpserver/httpserver.h

@@ -1,10 +1,8 @@
-#ifndef __HTTPSERVER_H
+#pragma once
-#define __HTTPSERVER_H
 
 #include "filesys.h"
 #include <ESP8266WebServer.h>
 
-
 class HTTPServer : public ESP8266WebServer {
 private:
     const char* rootDir;
@@ -35,6 +33,20 @@ public:
         this->listRoot();
         Serial.printf("\n\r");
 
+        // https://stackoverflow.com/questions/7627098/what-is-a-lambda-expression-in-c11
+        on("/compress.html", [this]() {
+            File f = open("/compress.html.gz");
+            if (!f) {
+                Serial.println("Failed to open file for reading");
+            }
+            else
+            {
+                Serial.println("Streaming /compress.html.gz to client");
+                const String cont = "text/html";
+                streamFile(f, cont);
+            }
+        });
+
         if( this->addRootFileHandler() ){
             this->begin();
             Serial.printf("[HTTPServer] Server active on Port 80 !\n\r");
@@ -44,5 +56,3 @@ public:
         return false;
     }
 };
-
-#endif // __HTTPSERVER_H

lib/treppe/treppe.cpp

@@ -0,0 +1,232 @@
+#include "treppe.h"
+
+uint8_t Treppe::softstart_led(uint8_t led, uint16_t startval, uint16_t stopval){
+    /*
+  softstart task
+
+  - get's called at regular intervals (1ms at the moment)
+  - dimms single led (0 - 15, PCA9685 outputs) with linear intervals vom startval to stopval
+  - calculates pwm steps depending on startval, stopval and timeinterval
+  - -> results in constanst speed
+  - returns 1 if led dimming is running
+  - returns 0 if led dimming is finished
+
+  */
+
+    static uint8_t lastled = 255;
+    static float current_pwm = 0;
+    static float stepsize = 1.0;
+    if(led != lastled){
+      pwmController.setChannelPWM(led, (uint16_t)startval);
+      lastled = led;
+      current_pwm = startval;
+      stepsize = INT_TIME*abs(stopval - startval)/(float)time_per_stair;      // only valid at 1ms function call interval
+      return 1;
+    }
+    
+    if(startval > stopval){
+      current_pwm -= stepsize;
+    }
+    else {
+      current_pwm += stepsize;
+    }
+    // Serial.println((uint16_t)current_pwm);
+    pwmController.setChannelPWM(led, (uint16_t)current_pwm);
+    if(current_pwm > stopval - stepsize && current_pwm < stopval + stepsize){
+      if(stopval == 0) pwmController.setChannelPWM(led, 0);
+      return 0;
+    } 
+    return 1;
+}
+
+void Treppe::ledsequence(){
+  static int8_t led = 0;
+  static uint16_t brightness = 0;
+  static uint16_t lastbrightness = 0;
+  static uint16_t status = 0;
+  uint16_t status_build = 0;
+  status_build |= direction << 8;
+  status_build |= state;
+  if(status_build != status){                 // check if any parameter changed
+    finish = 0;                               // set state unfinished -> start action
+    if(direction) led = 0;                    // reset led counter depending of direction
+    else          led = stairs-1;
+    if(state){
+      brightness = active_brightness;           // set brightness value depending of on/off
+      lastbrightness = idle_brightness;
+    }     
+    else{
+      brightness = idle_brightness;
+      lastbrightness = active_brightness;
+    }          
+    status = status_build;                    // set parameter memory
+
+    Serial.printf("----Status Changed! onoff: %d, dir: %d\n", state, direction);
+  }
+  if(!finish){                                // finish == 0 -> action pending
+    if(!softstart_led(led,lastbrightness, brightness)){
+      Serial.printf("one LED finished:  led: %d, last: %d, curr %d\n", 
+            led, lastbrightness, brightness);
+
+      if(direction){
+        led++;
+        if(led >= stairs)
+          finish = 1;
+      } 
+      else{
+          led--;
+          if(led < 0)
+            finish = 1;
+      }
+    }
+  }
+}
+
+void Treppe::rampe()
+{
+  if(state) {
+    finish = 0;
+    state = 0;                    // set parameter memory
+  }
+
+  if(!finish) {
+    if(direction) { // aufwärts
+      if(tick >= ticks_treppe-1) { // ziel erreicht
+        Serial.println("[Treppe] oberster tick !");
+        finish = 1;
+        return;
+      }
+      tick++;  // eins hoch
+    }
+    else {  // abwärts
+      if(tick <= 0) { // ziel erreicht
+        Serial.println("[Treppe] unterster tick !");
+        finish = 1;
+        return;
+      }
+      tick--;  // eins runter
+    }
+
+    stufe = tick / ticks_pro_stufe;
+
+    float new_pwm = 0.0;
+    if(an_aus) {
+      new_pwm = differenz_pwm_pro_tick * (tick - ticks_pro_stufe*stufe);
+      new_pwm += idle_brightness;
+      if(direction) new_pwm += differenz_pwm_pro_tick;
+    }
+    else {
+      new_pwm = active_brightness - differenz_pwm_pro_tick * (tick - ticks_pro_stufe*stufe);
+      new_pwm += idle_brightness;
+      if(direction) new_pwm -= differenz_pwm_pro_tick;
+    }
+
+    pwmController.setChannelPWM(stufe, (uint16_t) new_pwm);
+    Serial.printf("tick %04u, led %02d:%02u, pwm %4.1f\n", 
+      tick,
+      stufe,
+      (tick - ticks_pro_stufe*stufe), 
+      new_pwm
+    );
+  }
+}
+
+void Treppe::setup(){
+    Serial.printf("differenz_pwm_pro_tick %f\n", differenz_pwm_pro_tick);
+   
+    pwmController.resetDevices();
+    
+    // Deactive PCA9685 Phase Balancer due to LED Flickering
+    // https://github.com/NachtRaveVL/PCA9685-Arduino/issues/15
+    // see also lib/PCA9685-Arduin/PCA9685.h:204
+    pwmController.init(PCA9685_PhaseBalancer_None);
+    pwmController.setPWMFrequency(200);
+    pwmController.setAllChannelsPWM(idle_brightness);
+
+    pinMode(SENSOR1, INPUT);
+    pinMode(SENSOR2, INPUT);
+    Serial.println("Hello from Treppe");
+    Serial.print("Treppe: initial parameters: stairs=");
+    Serial.println(stairs);
+}
+
+void Treppe::task(){
+
+  if(finish){
+    direction = switch_direction;
+    state = switch_state;
+  }  
+  static uint8_t last_sensor_state[2] = {0,0}; 
+  uint8_t current_sensor_state[2] = {0,0};
+  current_sensor_state[0] = digitalRead(SENSOR1);
+  current_sensor_state[1] = digitalRead(SENSOR2);
+  
+  if(current_sensor_state[0] && !last_sensor_state[0] && state == 0){
+    setTick(0);
+    setAnAus(1);
+    setDirection(1);
+    setState(1);
+  }
+
+  if(current_sensor_state[1] && !last_sensor_state[1] && state == 0){
+    setTick(0);
+    setAnAus(0);
+    setDirection(0);
+    setState(1);
+  }
+
+  // first switch - off approach, use timer later
+  if(!current_sensor_state[0] && last_sensor_state[0] && state == 1){
+    setTick(ticks_treppe);
+    setAnAus(1);
+    setDirection(1);
+    setState(0);
+  }
+
+  if(!current_sensor_state[1] && last_sensor_state[1] && state == 1){
+    setTick(ticks_treppe);
+    setAnAus(1);
+    setDirection(0);
+    setState(0);
+  }
+
+  last_sensor_state[0] = current_sensor_state[0];
+  last_sensor_state[1] = current_sensor_state[1];
+
+  ledsequence();
+}
+
+
+uint16_t Treppe::setIdle(uint16_t _idle_brightness){
+    idle_brightness = _idle_brightness;
+    Serial.println("Treppe: idle brightness changed!");
+    return idle_brightness;
+}
+uint16_t Treppe::setActive(uint16_t _active_brightness){
+    active_brightness = _active_brightness;
+    Serial.println("Treppe: active brightness changed!");
+    return active_brightness;
+}
+uint16_t Treppe::setTime(uint16_t _time_per_stair){
+    time_per_stair = _time_per_stair;
+    Serial.println("Treppe: time changed!");
+    return time_per_stair;
+}
+
+void Treppe::setDirection(uint8_t _direction){
+    switch_direction = _direction;
+    Serial.printf("Treppe: switch_direction=%d!\n", switch_direction);
+    if(finish) Serial.println("apply direction request immediately");
+    else  Serial.println("currently active, dir change afterwards");
+    // to do: implement state command variable to determine dimm-state
+}
+
+void Treppe::setState(uint8_t _state){
+  if(state == _state) return;
+  else {
+    switch_state = _state;
+    Serial.printf("Treppe: switch_state=%d!\n", switch_state);
+    if(finish) Serial.println("apply state request immediately");
+    else Serial.println("currently active, state changes after activity");
+  }
+}

lib/treppe/treppe.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include "PCA9685.h"
+
+#define SENSOR1 15
+#define SENSOR2 12
+
+#define INT_TIME 20         // interrupt intervall [ms]
+
+class Treppe {
+private:
+    uint8_t stairs;
+    uint16_t time_per_stair = 300;          // dimmtime per stair [ms]
+    uint16_t idle_brightness = 0;
+    uint16_t active_brightness = 500;
+
+    uint8_t direction = 0;
+    uint8_t switch_direction = 0;
+    uint8_t state = 0;
+    uint8_t switch_state = 0;
+    uint8_t finish = 1;
+
+    // alternative
+    uint32_t tick = 0;
+    uint32_t stufe = 0;
+    uint8_t an_aus = 0;
+
+    uint32_t ticks_treppe = 0;
+    uint32_t ticks_pro_stufe = 0;
+    float differenz_pwm_pro_tick = 0.0;
+    // alternative
+
+
+    // initialize with i2c-Address 0, use Wire Library
+    PCA9685 pwmController;     
+    uint8_t softstart_led(uint8_t led, uint16_t startval, uint16_t stopval);
+    void ledsequence();
+    void rampe();
+
+public:
+    Treppe(uint8_t _stairs) : stairs(_stairs){
+        ticks_pro_stufe = time_per_stair / 20; // [ms]
+        ticks_treppe = ticks_pro_stufe * stairs;
+
+        differenz_pwm_pro_tick = (float) (active_brightness - idle_brightness) 
+                                            / (float) ticks_pro_stufe;
+    }
+
+    void setup();
+    void task();        // call periodically
+
+    // Parameter section
+    uint16_t setIdle(uint16_t _idle_brightness);
+    uint16_t setActive(uint16_t _active_brightness);
+    uint16_t setTime(uint16_t _time_per_stair);
+
+    void setTick(uint32_t _tick) {
+        tick = _tick;
+        Serial.printf("Treppe: Tick: %u!\n", tick);
+    }    
+    uint32_t getTicks() {
+        return ticks_treppe;
+    }
+
+    // Runtime Parameter section
+    void setDirection(uint8_t _direction);
+    void setState(uint8_t _state);
+    void setAnAus(uint8_t _an_aus) {
+        an_aus = _an_aus;
+    }
+
+    uint8_t getState() { return state;};
+    uint8_t getFinished() { return finish;};
+    uint8_t getDirection() {return direction;};
+};

src/main.cpp

@@ -9,12 +9,8 @@ extern "C" {
   #include "user_interface.h" 
 }
 // OTA & WEB
-#include <ESP8266WiFi.h>
-#include <WiFiUdp.h>
-#include <ArduinoOTA.h>
-#include "ota.h"
-
 #include "wifi_credentials.h"
+#include "ota.h"
 #include "httpserver.h"
 
 // BOARD
@@ -22,13 +18,10 @@ extern "C" {
 #define NODEMCU_LED 16
 
 // PWM
-
+#include "treppe.h"
-#include "pwm.h"
 os_timer_t timer1;
 uint8_t timer_flag = 0;
-
+Treppe stairs(16);
-Treppe stairs(13);
-
 
 // WIFI
 const char* ssid = STASSID;
@@ -110,17 +103,24 @@ void setup() {
 
   os_timer_setfn(&timer1, timerCallback, &timer_flag);
   os_timer_arm(&timer1, 20, true);
-
-  stairs.setState(1);
-  stairs.setDirection(1);
 }
 
+#include <random>
+
 void loop() {
-  if(millis() > 25000 && stairs.getState() == 1 && stairs.getDirection() == 1) stairs.setState(0);
+  // if(stairs.getState() == 0) {
-  if(millis() > 45000 && stairs.getDirection() == 1){
+  //   delay(1000);
-    stairs.setState(1);
+    
-    stairs.setDirection(0);
+  //   // uint32_t t = rand() % stairs.getTicks();
-  }
+  //   // uint32_t d = rand() % 2;
-  TIMEIF_US(ArduinoOTA.handle(), 1000, "OTA");
+    
-  TIMEIF_US(httpServer.handleClient(), 1000, "HTTP");
+  //   // stairs.setTick(t);
+  //   // stairs.setDirection(d);
+
+  //   stairs.setDirection(!stairs.getDirection());
+  //   stairs.setState(1);
+  // }
+  
+  TIMEIF_US(ArduinoOTA.handle(), 10000, "OTA");
+  TIMEIF_US(httpServer.handleClient(), 10000, "HTTP");
 }

src/pwm.cpp

@@ -1,136 +0,0 @@
-#include "pwm.h"
-
-uint8_t Treppe::softstart_led(uint8_t led, uint16_t startval, uint16_t stopval){
-    /*
-  softstart task
-
-  - get's called at regular intervals (1ms at the moment)
-  - dimms single led (0 - 15, PCA9685 outputs) with linear intervals vom startval to stopval
-  - calculates pwm steps depending on startval, stopval and timeinterval
-  - -> results in constanst speed
-  - returns 1 if led dimming is running
-  - returns 0 if led dimming is finished
-
-  */
-
-    static uint8_t lastled = 255;
-    static float current_pwm = 0;
-    static float stepsize = 1.0;
-    if(led != lastled){
-      pwmController.setChannelPWM(led, (uint16_t)startval);
-      lastled = led;
-      current_pwm = startval;
-      stepsize = 20*abs(stopval - startval)/(float)time_per_stair;      // only valid at 1ms function call interval
-      return 1;
-    }
-    
-    if(current_pwm > stopval - stepsize && current_pwm < stopval + stepsize) return 0;
-    // todo: duty cycle zero!
-    if(startval > stopval){
-      current_pwm -= stepsize;
-    }
-    else {
-      current_pwm += stepsize;
-    }
-    Serial.println((uint16_t)current_pwm);
-    pwmController.setChannelPWM(led, (uint16_t)current_pwm);
-    return 1;
-}
-
-void Treppe::ledsequence(){
-  static int8_t led = 0;
-  static uint16_t brightness = 0;
-  static uint16_t lastbrightness = 0;
-  static uint8_t finish = 1;
-  static uint16_t status = 0;
-  uint16_t status_build = 0;
-  status_build |= direction << 8;
-  status_build |= state;
-  if(status_build != status){                 // check if any parameter changed
-    finish = 0;                               // set state unfinished -> start action
-    if(direction) led = 0;                    // reset led counter depending of direction
-    else          led = stairs-1;
-    if(state){
-      brightness = active_brightness;           // set brightness value depending of on/off
-      lastbrightness = idle_brightness;
-    }     
-    else{
-      brightness = idle_brightness;
-      lastbrightness = active_brightness;
-    }          
-    status = status_build;                    // set parameter memory
-    Serial.print("----Status Changed! onoff: ");
-    Serial.print(state);
-    Serial.print(" dir: ");
-    Serial.println(direction);
-
-  }
-  if(!finish){                                // finish == 0 -> action pending
-      if(!softstart_led(led,lastbrightness, brightness)){
-        Serial.print("one LED finished: ");
-        Serial.print(led);
-        Serial.print(" last: ");
-        Serial.print(lastbrightness);
-        Serial.print(" curr: ");
-        Serial.println(brightness);
-        if(direction){
-          led++;
-          if(led >= stairs) {
-            finish = 1;
-            //lastbrightness = brightness;
-            }
-        } 
-        else{
-           led--;
-           if(led < 0){
-             //lastbrightness = brightness;
-             finish = 1;
-            }
-        }
-      }
-  }
-}
-
-void Treppe::setup(){
-    pwmController.resetDevices();
-    pwmController.init();
-    pwmController.setPWMFrequency(200);
-    Serial.println("Hello from Treppe");
-    Serial.print("Treppe: initial parameters: stairs=");
-    Serial.println(stairs);
-}
-void Treppe::task(){
-    ledsequence();
-}
-
-uint16_t Treppe::setIdle(uint16_t _idle_brightness){
-    idle_brightness = _idle_brightness;
-    Serial.println("Treppe: idle brightness changed!");
-    return idle_brightness;
-}
-uint16_t Treppe::setActive(uint16_t _active_brightness){
-    active_brightness = _active_brightness;
-    Serial.println("Treppe: active brightness changed!");
-    return active_brightness;
-}
-uint16_t Treppe::setTime(uint16_t _time_per_stair){
-    time_per_stair = _time_per_stair;
-    Serial.println("Treppe: time changed!");
-    return time_per_stair;
-}
-
-uint8_t Treppe::setDirection(uint8_t _direction){
-    direction = _direction;
-    Serial.println("Treppe: Direction changed!");
-    // to do: implement state command variable to determine dimm-state
-    return direction;
-}
-
-uint8_t Treppe::setState(uint8_t _state){
-    if(state == _state) return 1;
-    else{
-        state = _state;
-        Serial.println("Treppe: State changed!");
-    }  
-    return 0;
-}

test/test_main.cpp

@@ -1,40 +1,40 @@
-#include <Arduino.h>
+// #include <Arduino.h>
-#include <unity.h>
+// #include <unity.h>
 
-String STR_TO_TEST;
+// String STR_TO_TEST;
 
-void setUp(void) {
+// // void setUp(void) {
-    // set stuff up here
+// //     // set stuff up here
-    STR_TO_TEST = "Hello, world!";
+// //     STR_TO_TEST = "Hello, world!";
-}
+// // }
 
-void tearDown(void) {
+// // void tearDown(void) {
-    // clean stuff up here
+// //     // clean stuff up here
-    STR_TO_TEST = "";
+// //     STR_TO_TEST = "";
-}
+// // }
 
-void test_led_builtin_pin_number(void) {
+// void test_led_builtin_pin_number(void) {
-    TEST_ASSERT_EQUAL(2, LED_BUILTIN);
+//     TEST_ASSERT_EQUAL(2, LED_BUILTIN);
-}
+// }
 
-void test_string_concat(void) {
+// void test_string_concat(void) {
-    String hello = "Hello, ";
+//     String hello = "Hello, ";
-    String world = "world!";
+//     String world = "world!";
-    TEST_ASSERT_EQUAL_STRING(STR_TO_TEST.c_str(), (hello + world).c_str());
+//     TEST_ASSERT_EQUAL_STRING(STR_TO_TEST.c_str(), (hello + world).c_str());
-}
+// }
 
 
-void setup()
+// void setup()
-{
+// {
-    delay(2000); // service delay
+//     delay(2000); // service delay
-    UNITY_BEGIN();
+//     UNITY_BEGIN();
 
-    RUN_TEST(test_led_builtin_pin_number);
+//     RUN_TEST(test_led_builtin_pin_number);
-    RUN_TEST(test_string_concat);
+//     RUN_TEST(test_string_concat);
 
-    UNITY_END(); // stop unit testing
+//     UNITY_END(); // stop unit testing
-}
+// }
 
-void loop()
+// void loop()
-{
+// {
-}
+// }

test/test_pwm.cpp

@@ -0,0 +1,47 @@
+// #include <Arduino.h>
+#include "treppe.h"
+#include <unity.h>
+
+Treppe stairs(10);
+
+void setUp(void) {
+  // run before each test
+  // set stuff up here
+  stairs.setup();
+  Serial.println("Treppe initialized !");
+  Serial.println("PCA9685 connected !");
+}
+
+void tearDown(void) {
+    // clean stuff up here
+}
+
+void test_set_state(void) {
+  stairs.setState(1);
+  TEST_ASSERT_EQUAL(1, stairs.getState());
+  stairs.setState(0);
+  TEST_ASSERT_EQUAL(0, stairs.getState());
+}
+
+
+void test_set_direction(void) {
+  stairs.setDirection(1);
+  TEST_ASSERT_EQUAL(1, stairs.getDirection());
+  stairs.setDirection(0);
+  TEST_ASSERT_EQUAL(0, stairs.getDirection());
+}
+
+void setup()
+{   
+    delay(2000); // service delay
+    UNITY_BEGIN();
+
+    RUN_TEST(test_set_state);
+    RUN_TEST(test_set_direction);
+
+    UNITY_END(); // stop unit testing
+}
+
+void loop()
+{
+}