From f5f856ba638914a93abc07604477c53f9f356bb9 Mon Sep 17 00:00:00 2001
From: Matthew Colvin <35540398+Mc067415@users.noreply.github.com>
Date: Sun, 27 Aug 2023 18:47:17 -0500
Subject: [PATCH] add poller to simplify polling UI updates

---
 Platformio/OmoteUI/OmoteUI.hpp |  2 +-
 Platformio/OmoteUI/poller.cpp  | 23 +++++++++++++++++++++++
 Platformio/OmoteUI/poller.hpp  | 23 +++++++++++++++++++++++
 3 files changed, 47 insertions(+), 1 deletion(-)
 create mode 100644 Platformio/OmoteUI/poller.cpp
 create mode 100644 Platformio/OmoteUI/poller.hpp

diff --git a/Platformio/OmoteUI/OmoteUI.hpp b/Platformio/OmoteUI/OmoteUI.hpp
index 2f8daea..460c907 100644
--- a/Platformio/OmoteUI/OmoteUI.hpp
+++ b/Platformio/OmoteUI/OmoteUI.hpp
@@ -9,7 +9,7 @@
 #include <memory>
 #include <stdio.h>
 #include <string>
-
+#include "poller.hpp"
 
 /// @brief Singleton to allow UI code to live separately from the Initialization
 /// of resources.
diff --git a/Platformio/OmoteUI/poller.cpp b/Platformio/OmoteUI/poller.cpp
new file mode 100644
index 0000000..8d14181
--- /dev/null
+++ b/Platformio/OmoteUI/poller.cpp
@@ -0,0 +1,23 @@
+#include "poller.hpp"
+
+#include <functional>
+#include <memory>
+
+using namespace std::chrono;
+
+poller::poller(milliseconds aPollTime,std::function<void()> aCallback){
+    mTimer = lv_timer_create(poller::onPoll,aPollTime.count(),this);
+    lv_timer_set_repeat_count(mTimer,-1); // Call forever
+}
+
+poller::~poller(){
+    lv_timer_del(mTimer);
+}
+
+void poller::onPoll(_lv_timer_t* aTimer){
+    poller* currentPoller = reinterpret_cast<poller*>(aTimer->user_data);
+    
+    if(currentPoller->anIntermittentCallback){
+        currentPoller->anIntermittentCallback();
+    }
+}
\ No newline at end of file
diff --git a/Platformio/OmoteUI/poller.hpp b/Platformio/OmoteUI/poller.hpp
new file mode 100644
index 0000000..59fed2f
--- /dev/null
+++ b/Platformio/OmoteUI/poller.hpp
@@ -0,0 +1,23 @@
+#include <chrono> 
+#include <memory>
+#include <functional>
+#include "lvgl.h"
+
+class poller{
+public:
+    poller(std::chrono::milliseconds pollTime = std::chrono::seconds(5), std::function<void()> anIntermittentCallback = nullptr);
+    virtual ~poller();
+
+    void setPollPeriod(std::chrono::milliseconds aPollPeriod){ lv_timer_set_period(mTimer, aPollPeriod.count());}
+    inline void pause()   { lv_timer_pause(mTimer);} 
+    inline void resume()  { lv_timer_resume(mTimer);}
+    inline void reset()   { lv_timer_reset(mTimer);}
+    inline void runNext() { lv_timer_ready(mTimer);}
+
+private: 
+    lv_timer_t* mTimer;
+    std::function<void()> anIntermittentCallback;
+    
+    // Static function registered to every timers callback to pass this object as context
+    static void onPoll(_lv_timer_t* aTimer);
+};
\ No newline at end of file