Applied engineering Team
primjer mjerenja udaljenosti
Dependencies: mbed
Diff: main.cpp
- Revision:
- 0:e7a1440e980a
- Child:
- 1:144bd7bdd1d1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Jan 28 15:17:47 2015 +0000
@@ -0,0 +1,32 @@
+#include "mbed.h"
+//#include "Pswitch.h"
+
+Serial pc(USBTX, USBRX); // tx, rx
+
+DigitalOut trig (p25);
+DigitalIn echo (p6);
+//Pswitch sw(p8);
+double pulsedur, distance;
+Timer tmr;
+
+int main()
+{
+ pc.printf("start\n");
+ while(1) {
+ tmr.reset();
+ trig = 1;
+ wait_us(10);
+ trig = 0;
+
+ while (!echo); // wait high
+ tmr.start();
+
+ while (echo); // wait low
+ tmr.stop();
+
+ pulsedur = tmr.read_us();
+ distance = pulsedur*0.017; //cm
+ pc.printf("pulsedur=%8.2f\n", distance);
+ wait(0.3);
+ }
+}