Revision 0:838bb871a4d1, committed 2013-05-03

Comitter:

zenglingxuan

Date:

Fri May 03 11:16:26 2013 +0000

Commit message:

detect whether the person is sit. range finder. works

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri May 03 11:16:26 2013 +0000
@@ -0,0 +1,40 @@
+#include "mbed.h"
+
+Serial xbee1(PTC4, PTC3);       //xbee
+DigitalOut rst1(PTC5);
+
+AnalogIn dis(PTB0);     //range finder
+DigitalOut myled(LED1);
+
+int main() {
+       
+        int per;        //range per
+        char f;         //range flag
+        int l;          //led indicator
+
+        
+        // reset the xbees (at least 200ns)
+        rst1 = 0;
+        wait_ms(1); 
+        rst1 = 1;
+        wait_ms(1);    
+    
+    
+    while(1) {
+        //cal distance and set flag when close enough
+        per=dis*512/3.3;
+        if (per<3){
+        f='1';
+        l=0;
+        }
+        else {
+        f='0';
+        l=1;
+        }
+        myled=l;
+        
+        xbee1.putc(f);
+        
+        wait(1); 
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri May 03 11:16:26 2013 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/7e6c9f46b3bd
\ No newline at end of file