Revision 3:c3f198cd0624, committed 2016-05-22

Comitter:

limr

Date:

Sun May 22 15:17:51 2016 +0000

Parent:

2:6a50d967a71a

Commit message:

?????;

Changed in this revision

--- a/main.cpp	Tue May 10 15:35:45 2016 +0000
+++ b/main.cpp	Sun May 22 15:17:51 2016 +0000
@@ -1,9 +1,11 @@
 #include "mbed.h"
 #include"time.h"
+#include"math.h"
 
-#define UPA 10000//坐时最大加速度值
-
-uint16_t x_a,y_a,z_a;
+#define UPA1 10000//坐时最大加速度值
+#define UPA2 10000
+#define UPA3 10000
+uint16_t x_a,y_a,z_a,all_a;
 bool flag = 0;
 
 SPI spi_master(P0_6,P0_5,P0_7); //mosi miso sclk 
@@ -75,42 +77,59 @@
     z_a=Dz_H<<8|Dz_L/16;
 }
 void buzzerini(void)
-{
+{  while(1){
    for (int i=0;i<=11;i++) 
    {
        buzzer.period(1/(2*frequency[i])); // 设置PWM周期
        buzzer=0.5; // 设置占空比
        wait(0.4*beat[i]); // 保持节拍周期
     }
+    get_val();
+    if(x_a>UPA3)
+      {
+         buzzer.period_us(0);
+         break;
+       }
+}
+}
+void calsample(void)
+{  uint16_t sum;
+   clock_t st,en;
+   st=clock();
+   get_val();
+   while((double)((en=clock())-st)/CLK_TCK>100)
+   {  
+      all_a=(uint16_t)sqrt((double)(x_a+y_a+z_a));
+      get_val();
+      sum+=all_a;
+      wait(10);
+      }
 }
 void sit_judgement()
-{   int flag=0;
+{   int flag=1;
     clock_t start,end;
     start=clock();
-    get_val();
-    get_val();
-    while(x_a<=UPA)
-    {   get_val(); 
-        end=clock();
-        if((double)(end-start)/CLK_TCK>20)//坐了20s
-        {   flag=1;
+    calsample();
+    while(all_a<=UPA1)//T+的情况
+    {   end=clock();
+        if((double)(end-start)/CLK_TCK>300)//坐了300s
+        {   flag=0;
+            buzzerini();
             break;
             }
+        calsample();
     }
-    while(flag)
-    {    buzzerini();
-         get_val();
-         if(x_a>UPA)
-         {
-            buzzer.period_us(0);
-            break;}
-        
+    while(flag)//T-的情况
+    {  calsample();
+       if(all_a<UPA2)
+       {
+           break;
+           }
+        wait(10);
     }
 }
-        
-
-    
-
+      
+   
 int main(void)
 {
   SPI_LIS3DH_Init();
@@ -120,7 +139,7 @@
      if(flag)
      {   
          flag=0;
-         wait(10);//等站起来后读取判断周期变长
+         wait(5);//等站起来后读取判断周期变长
      }
   }
 }
\ No newline at end of file