nextion

lib/ITEADLIB_Arduino_Nextion-master/examples/CompText/CompText_v0_32.ino

@@ -0,0 +1,135 @@
+/**
+ * @example CompText.ino
+ *
+ * @par How to Use
+ * This example shows that ,when the "+" component on the Nextion screen is released,
+ * the value of text component will plus 1,when the "-" component released ,the value of 
+ * text component will minus 1 every time.
+ *
+ * @author  Wu Pengfei (email:<pengfei.wu@itead.cc>)
+ * @date    2015/7/10
+ * @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"
+
+void t0PopCallback(void *ptr);
+void b0PopCallback(void *ptr);
+void b1PopCallback(void *ptr);
+
+/*
+ * Declare a text object [page id:0,component id:1, component name: "t0"]. 
+ */
+NexText t0 = NexText(0, 1, "t0");
+
+/*
+ * Declare a button object [page id:0,component id:2, component name: "b0"]. 
+ */
+NexButton b0 = NexButton(0, 2, "b0");
+
+/*
+ * Declare a button object [page id:0,component id:3, component name: "b1"]. 
+ */
+NexButton b1 = NexButton(0, 3, "b1");
+
+char buffer[100] = {0};
+
+/*
+ * Register object t0, b0, b1, to the touch event list.  
+ */
+NexTouch *nex_listen_list[] = 
+{
+    &t0,
+    &b0,
+    &b1,
+    NULL
+};
+
+/*
+ * Text component pop callback function. 
+ */
+void t0PopCallback(void *ptr)
+{
+    dbSerialPrintln("t0PopCallback");
+    t0.setText("50");
+}
+
+/*
+ * Button0 component pop callback function.
+ * In this example,the value of the text component will plus one every time when button0 is released.
+ */
+void b0PopCallback(void *ptr)
+{
+    uint16_t len;
+    uint16_t number;
+    
+    dbSerialPrintln("b0PopCallback");
+
+    memset(buffer, 0, sizeof(buffer));
+    t0.getText(buffer, sizeof(buffer));
+    
+    number = atoi(buffer);
+    number += 1;
+
+    memset(buffer, 0, sizeof(buffer));
+    itoa(number, buffer, 10);
+    
+    t0.setText(buffer);
+}
+
+/*
+ * Button1 component pop callback function.
+ * In this example,the value of the text component will minus one every time when button1 is released.
+ */
+void b1PopCallback(void *ptr)
+{
+    uint16_t len;
+    uint16_t number;
+    
+    dbSerialPrintln("b1PopCallback");
+
+    memset(buffer, 0, sizeof(buffer));
+    t0.getText(buffer, sizeof(buffer));
+    
+    number = atoi(buffer);
+    number -= 1;
+
+    memset(buffer, 0, sizeof(buffer));
+    itoa(number, buffer, 10);
+    
+    t0.setText(buffer);
+}
+
+void setup(void)
+{
+    /* Set the baudrate which is for debug and communicate with Nextion screen. */
+    nexInit();
+
+    /* Register the pop event callback function of the current text component. */
+    t0.attachPop(t0PopCallback);
+
+    /* Register the pop event callback function of the current button0 component. */
+    b0.attachPop(b0PopCallback);
+
+    /* Register the pop event callback function of the current button1 component. */
+    b1.attachPop(b1PopCallback);
+
+    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);
+}
+