TVZ Mechatronics Team / Mbed 2 deprecated HC-SR04

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Dependencies:   mbed HCSR04 AutomationElements

Files at this revision

API Documentation at this revision

Revision 6:bca0839e8295, committed 2016-12-10

Comitter:
tbjazic
Date:
Sat Dec 10 08:28:06 2016 +0000
Parent:
4:052ac3f5c938
Commit message:
Filtering with Ticker object corrected.

Changed in this revision

HCSR04.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file 
diff -r 052ac3f5c938 -r bca0839e8295 HCSR04.lib
--- a/HCSR04.lib	Mon Dec 07 10:44:07 2015 +0000
+++ b/HCSR04.lib	Sat Dec 10 08:28:06 2016 +0000
@@ -1,1 +1,1 @@
-https://developer.mbed.org/teams/TVZ-Mechatronics-Team/code/HCSR04/#a667b621f625
+https://developer.mbed.org/teams/TVZ-Mechatronics-Team/code/HCSR04/#cf3e4e307d15

diff -r 052ac3f5c938 -r bca0839e8295 main.cpp
--- a/main.cpp	Mon Dec 07 10:44:07 2015 +0000
+++ b/main.cpp	Sat Dec 10 08:28:06 2016 +0000
@@ -4,29 +4,28 @@
 
 Serial pc(USBTX, USBRX);
 HCSR04 sensor(p5, p7);
-float sampleTime = 0.1;
+float sampleTime = 0.5;
 PT1 filter(1, 2, sampleTime);
 Ticker ticker;
 float distance;
 float filteredDistance; 
-DigitalOut led1(LED1);
 
 void calc() {
-    led1 = 1;
-    distance = sensor.getDistance_mm();
-    filter.in(distance);
-    filteredDistance = filter.out();
-    pc.printf("%7.1f mm  %7.1f mm  \r", distance, filteredDistance);
-    led1 = 0;
+    sensor.startMeasurement();
 }
 
 int main() {
-    sensor.setRanges(10, 110);
+    sensor.setRanges(2, 400);
     pc.printf("Minimum sensor range = %g cm\n\rMaximum sensor range = %g cm\n\r", sensor.getMinRange(), sensor.getMaxRange());
     pc.printf("Sensor:       Filtered:\n\r");
     ticker.attach(&calc, sampleTime);
-    
-    while(1) {
-        wait_ms(500);
+    while(true) {
+        while(!sensor.isNewDataReady()) {
+        // wait for new data
+        }
+        distance = sensor.getDistance_cm();
+        filter.in(distance);
+        filteredDistance = filter.out();
+        pc.printf("%7.1f cm  %7.1f cm\n\r", distance, filteredDistance);
     }
 }
\ No newline at end of file