Diff: main.cpp

Revision:

2:db3ce8717e38

Parent:

1:b78c70e272ae

--- a/main.cpp	Thu Oct 20 09:11:55 2016 +0000
+++ b/main.cpp	Thu Oct 20 13:50:30 2016 +0000
@@ -1,22 +1,33 @@
 //平台nucleo 70r+mbed
-//USB虚拟串口与PC串口通信
-//波特率9600,无奇偶校验
+//Pir红外人体感应模块HC-SR501 
+//感应人体后LED1亮
+// By www.emcu.it
+// Feb.2015
+// Tested on NUCLEO-F410RE
+//
 #include "mbed.h"
-Serial pc(SERIAL_TX, SERIAL_RX); // 虚拟 USART2 tx, rx
-Serial device(PB_6, PA_10);      // PC机usb转TTL CP2102   USART1 tx, rx
-
+DigitalOut myled(LED1);//D13
+DigitalIn Sensor(PA_10);
+int n=0;
 int main()
  {
-   while(1) 
-     {
-        if(pc.readable()) 
-        {
-          device.putc(pc.getc()); // 从虚拟串口接收数据,并发给PC
-          
-         }
-        if(device.readable()) 
-        {
-         pc.putc(device.getc()); // 从PC物理串口接收数据,并发给虚拟串口
-        }
-     } 
-}
+ // 等待感应模块稳定(30 sec.)
+ for (n=0; n<30; n++)
+ {
+ wait_ms(1000); // 1sec delay
+
+ myled = !myled; // Blinking LED1
+ }
+ myled = 0; // LED1 is OFF
+
+ while(1)
+ {
+ if (Sensor == 1)
+ {
+ myled = 1; // LED1 is ON
+ wait_ms(20000); // LED1 亮 20 sec
+ }
+ else
+ myled = 0; // LED1 灭
+ }
+}
\ No newline at end of file