From 0230c291b4a9af8589a74b79c2bd31946a2ccd0b Mon Sep 17 00:00:00 2001
From: Jaup <270995079@qq.com>
Date: Tue, 30 Aug 2016 10:00:04 +0000
Subject: [PATCH] v0.50

---
 README.md |  4 ----
 button.c  | 17 ++++++++++++++++-
 button.h  |  1 +
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 52a425f..489080a 100644
--- a/README.md
+++ b/README.md
@@ -27,10 +27,6 @@ int main()
     //make the timer repeat invoking the button_ticks() interval 5ms.
     __timer_start(button_ticks, 0, 5);
     
-    while(ture) 
-    {
-     ...
-    }
 }
 
 void BTN1_SINGLE_CLICK_Handler()
diff --git a/button.c b/button.c
index a6c44da..58911d8 100644
--- a/button.c
+++ b/button.c
@@ -1,3 +1,8 @@
+/*
+ * Copyright (c) 2016 Zibin Zheng <znbin@qq.com>
+ * All rights reserved
+ */
+
 #include "button.h"
 
 //MultiButton
@@ -7,7 +12,7 @@
 #define TICKS_INTERVAL    5	//ms
 
 //According to your need to modify the constants.
-const uint8_t  kDebounceTicks  = 3;	//MAX 3
+const uint8_t  kDebounceTicks  = 3;	//MAX 8
 const uint16_t kClickTicks     = (400/TICKS_INTERVAL);
 const uint16_t kLongTicks      = (1000/TICKS_INTERVAL);
 
@@ -41,6 +46,16 @@ void button_attach(struct Button* handle, BtnEvent event, CallBackFunc cb)
 	handle->cb[event] = cb;
 }
 
+/**
+  * @brief  Inquire the button is pressed.
+  * @param  handle: the button handle strcut.
+  * @retval 0 not press, 1 pressed.
+  */
+int button_is_pressed(struct Button* handle)
+{
+	return ((handle->button_level == handle->active_level) ? 1:0);
+}
+
 /**
   * @brief  Button driver core function, driver state machine.
   * @param  handle: the button handle strcut.
diff --git a/button.h b/button.h
index 332faa6..2193176 100644
--- a/button.h
+++ b/button.h
@@ -33,6 +33,7 @@ extern "C" {
 
 void button_init(struct Button* handle, uint8_t(*pin_level)(), uint8_t active_level);
 void button_attach(struct Button* handle, BtnEvent event, CallBackFunc cb);
+int  button_is_pressed(struct Button* handle);
 int  button_start(struct Button* btn);
 void button_stop(struct Button* btn);
 void button_ticks(void);