add api for supplementary tasks, add button task

lib/buttons/GwButtons.cpp

@@ -0,0 +1,86 @@
+#include "GwButtons.h"
+#include "GwHardware.h"
+#include "GwApi.h"
+
+class FactoryResetRequest: public GwMessage{
+    private:
+        GwApi *api;
+    public:
+        FactoryResetRequest(GwApi *api):GwMessage(F("reset button")){
+            this->api=api;
+        }
+        virtual ~FactoryResetRequest(){}
+    protected:    
+        virtual void processImpl(){
+            api->getLogger()->logDebug(GwLog::LOG,"reset request processing");
+            api->getConfig()->reset(true);
+            xTaskCreate([](void *p){
+            delay(500);
+            ESP.restart();
+            vTaskDelete(NULL);
+            },"reset",1000,NULL,0,NULL);
+        };
+};
+void handleButtons(void *param){
+    GwApi *api=(GwApi*)param;
+    GwLog *logger=api->getLogger();
+    #ifndef GWBUTTON_PIN
+        LOG_DEBUG(GwLog::LOG,"no button pin defined, do not watch");
+        vTaskDelete(NULL);
+        return;
+    #else
+    #ifndef GWBUTTON_ACTIVE
+    int activeState=0; 
+    #else
+    int activeState=GWBUTTON_ACTIVE;
+    #endif
+    #ifdef GWBUTTON_PULLUPDOWN
+    bool pullUpDown=true;
+    #else
+    bool pullUpDown=false;
+    #endif
+    uint8_t mode=INPUT;
+    if (pullUpDown){
+        mode=activeState?INPUT_PULLDOWN:INPUT_PULLUP;
+    }
+    pinMode(GWBUTTON_PIN,mode);
+    unsigned long lastPressed=0;
+    unsigned long firstPressed=0;
+    unsigned long lastReport=0;
+    const unsigned long OFF_TIME=20;
+    const unsigned long REPORT_TIME=1000;
+    const unsigned long HARD_REST_TIME=10000;
+    while(true){
+        delay(10);
+        int current=digitalRead(GWBUTTON_PIN);
+        unsigned long now=millis();
+        if (current != activeState){
+            if (lastPressed != 0 && (lastPressed+OFF_TIME) < now){
+                lastPressed=0; //finally off
+                firstPressed=0;
+                LOG_DEBUG(GwLog::LOG,"Button press stopped");
+            }
+            continue;
+        }
+        lastPressed=now;
+        if (firstPressed == 0) {
+            firstPressed=now;
+            LOG_DEBUG(GwLog::LOG,"Button press started");
+            lastReport=now;
+        }
+        if (lastReport != 0 && (lastReport + REPORT_TIME) < now ){
+            LOG_DEBUG(GwLog::LOG,"Button active for %ld",(now-firstPressed));
+            lastReport=now;
+        }
+        if (now > (firstPressed+HARD_REST_TIME)){
+            LOG_DEBUG(GwLog::ERROR,"Factory reset by button");
+            GwMessage *r=new FactoryResetRequest(api);
+            api->getQueue()->sendAndForget(r);
+            r->unref();
+            firstPressed=0;
+            lastPressed=0;
+        }
+    }
+    vTaskDelete(NULL);
+    #endif
+}

lib/buttons/GwButtons.h

@@ -0,0 +1,5 @@
+#ifndef _GWBUTTONS_H
+#define _GWBUTTONS_H
+//task function
+void handleButtons(void *param);
+#endif