Marco Zecchini / Mbed 2 deprecated Smartage

Smartage application

Dependencies:   BufferedSerial SX1276GenericLib USBDeviceHT mbed Crypto X_NUCLEO_IKS01A2

Fork of STM32L0_LoRa by Helmut Tschemernjak

Diff: hcsr04.cpp

Revision:
31:6bf5a868695f
Parent:
29:04e1489f8fe2
--- a/hcsr04.cpp	Mon Sep 17 20:39:50 2018 +0000
+++ b/hcsr04.cpp	Mon Sep 17 20:42:51 2018 +0000
@@ -19,4 +19,12 @@
      return timer.read_us(); 
  
 }
+
+//return distance in cm 
+long HCSR04::distance(){
+    duration = echo_duration();
+  distance_cm = (duration/2)/29.1  ;
+        return distance_cm;
+
+}
  
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