nextion

lib/ITEADLIB_Arduino_Nextion-master/examples/CompDualStateButton/CompDualStateButton_v0_32.ino

@@ -0,0 +1,96 @@
+/**
+ * @example CompDualStateButton.ino
+ * 
+ * @par How to Use
+ * This example shows that when the dual state button component on the Nextion screen is released,
+ * the text of Text component will change one every time.      
+ *
+ * @author  huang xianming (email:<xianming.huang@itead.cc>)
+ * @date    2015/11/11
+ * @updated 2016/12/25 bring HMI up to v0.32 to avoid too old issues
+ * @convert by Patrick Martin, no other changes made
+ * @copyright 
+ * Copyright (C) 2014-2015 ITEAD Intelligent Systems Co., Ltd. \n
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include "Nextion.h"
+
+/*
+ * Declare a dual state button object [page id:0,component id:1, component name: "bt0"]. 
+ */
+NexDSButton bt0 = NexDSButton(0, 1, "bt0");
+
+NexText t0 = NexText(0, 2, "t0");
+
+
+char buffer[100] = {0};
+
+/*
+ * Register a dual state button object to the touch event list.  
+ */
+NexTouch *nex_listen_list[] = 
+{
+    &bt0,
+    NULL
+};
+
+/*
+ * Dual state button component pop callback function. 
+ * In this example,the button's text value will plus one every time when it is released. 
+ */
+void bt0PopCallback(void *ptr)
+{
+    uint32_t dual_state;
+    NexDSButton *btn = (NexDSButton *)ptr;
+    dbSerialPrintln("b0PopCallback");
+    dbSerialPrint("ptr=");
+    dbSerialPrintln((uint32_t)ptr); 
+    memset(buffer, 0, sizeof(buffer));
+
+    /* Get the state value of dual state button component . */
+    bt0.getValue(&dual_state);
+    if(dual_state) 
+    {
+        t0.setText("HI! OPEN STATE");
+    }
+    else
+    {
+        t0.setText("HI! OFF STATE");
+    }
+}
+
+void setup(void)
+{    
+    /* Set the baudrate which is for debug and communicate with Nextion screen. */
+    nexInit();
+
+    /* Register the pop event callback function of the dual state button component. */
+    bt0.attachPop(bt0PopCallback, &bt0);
+    
+    dbSerialPrintln("setup done"); 
+}
+
+void loop(void)
+{   
+    /*
+     * When a pop or push event occured every time,
+     * the corresponding component[right page id and component id] in touch event list will be asked.
+     */
+    nexLoop(nex_listen_list);
+}
+
+
+
+
+
+
+
+
+
+
+
+