add digital input plugin

src/GpioConfig.h

@@ -7,6 +7,7 @@ struct GpioConfig
     int threshold;
     int updateInterval;
     const char *topic;
+    int pinMode;
 };
 
 #endif

src/examples/combined/main.cpp

@@ -2,6 +2,7 @@
 #include "Sprocket.h"
 #include "inputs/rotary/RotaryPlugin.h"
 #include "inputs/analog/AnalogInputPlugin.h"
+#include "inputs/digital/DigitalInputPlugin.h"
 
 Sprocket *sprocket;
 RotaryPlugin *r1;
@@ -22,6 +23,14 @@ void addAnalogInput(Sprocket* s, int pin, const char* topic)
     }, topic, _1));
     s->addPlugin(new AnalogInputPlugin({pin, POT_THRESHOLD, POT_POLL_INTERVAL, topic}));
 }
+void addDigitalInput(Sprocket* s, int pin, const char* topic)
+{
+    s->subscribe(topic, bind([](String label, String val){
+        PRINT_MSG(Serial, label.c_str(), val.c_str());
+    }, topic, _1));
+    s->addPlugin(new DigitalInputPlugin({pin, POT_THRESHOLD, POT_POLL_INTERVAL, topic, INPUT}));
+}
+
 
 void setup()
 {
@@ -33,6 +42,7 @@ void setup()
     addAnalogInput(sprocket, 37, "pot2");
     addAnalogInput(sprocket, 38, "pot3");
     addAnalogInput(sprocket, 39, "pot4");
+    addDigitalInput(sprocket, 21, "btn");
     sprocket->activate();
 }
 

src/inputs/digital/DigitalInputPlugin.cpp

@@ -0,0 +1,27 @@
+#include "DigitalInputPlugin.h"
+
+DigitalInputPlugin::DigitalInputPlugin(GpioConfig cfg)
+{
+    config = cfg;
+    if (config.pinMode)
+    {
+        pinMode(config.pin, config.pinMode);
+    }
+}
+void DigitalInputPlugin::activate(Scheduler *userScheduler)
+{
+    inputTask.set(TASK_MILLISECOND * config.updateInterval, TASK_FOREVER, std::bind(&DigitalInputPlugin::checkInput, this));
+    userScheduler->addTask(inputTask);
+    inputTask.enable();
+    PRINT_MSG(Serial, "PLUGIN", "DigitalInputPlugin activated");
+}
+
+void DigitalInputPlugin::checkInput()
+{
+    int newVal = digitalRead(config.pin);
+    if (newVal != currentVal)
+    {
+        publish(config.topic, String(newVal));
+        currentVal = newVal;
+    }
+}

src/inputs/digital/DigitalInputPlugin.h

@@ -0,0 +1,29 @@
+#ifndef __DIGITAL_INPUT__PLUGIN_H__
+#define __DIGITAL_INPUT__PLUGIN_H__
+
+#define _TASK_SLEEP_ON_IDLE_RUN
+#define _TASK_STD_FUNCTION 
+
+#include <functional>
+#include <vector>
+#include <FS.h>
+#include <TaskSchedulerDeclarations.h>
+#include <Plugin.h>
+#include <utils/print.h>
+#include <utils/misc.h>
+#include <GpioConfig.h>
+
+using namespace std;
+using namespace std::placeholders;
+
+class DigitalInputPlugin : public Plugin {
+    public:
+        Task inputTask;
+        int currentVal = 0;
+        GpioConfig config;
+        DigitalInputPlugin(GpioConfig cfg);
+        void activate(Scheduler* userScheduler);
+        void checkInput();
+};
+
+#endif