Revision 10:338191178cbf, committed 2015-05-18

Comitter:

coyotebush

Date:

Mon May 18 00:44:59 2015 +0000

Parent:

9:16b63cd4aba8

Commit message:

max distance

Changed in this revision

--- a/hcsr04.cpp	Thu May 07 04:14:57 2015 +0000
+++ b/hcsr04.cpp	Mon May 18 00:44:59 2015 +0000
@@ -22,7 +22,7 @@
 
 
 HCSR04::HCSR04(PinName TrigPin,PinName EchoPin):
-    trigger(TrigPin), echo(EchoPin)
+    trigger(TrigPin), echo(EchoPin), maxpulse(-1)
 {
     pulsetime.stop();
     pulsetime.reset();
@@ -42,7 +42,7 @@
 }
 void HCSR04::start(void)
 {
-    pulsedur = 0;
+    pulsedur = -1;
     
     trigger=1;
     wait_us(10);
@@ -53,6 +53,8 @@
 {
     pulsetime.stop();
     pulsedur = pulsetime.read_us();
+    if (pulsedur > maxpulse && pulsedur < kBogusPulse)
+        maxpulse = pulsedur;
 }
 
 void HCSR04::rise (void (*fptr)(void))
@@ -66,11 +68,13 @@
 
 double HCSR04::get_dist_cm()
 {
-    if (pulsedur == 0)
-        return -1;
     return pulsedur * kMicrosecondsToCentimeters;
 }
-unsigned int HCSR04::get_pulse_us()
+double HCSR04::get_max_dist_cm()
+{
+    return maxpulse * kMicrosecondsToCentimeters;
+}
+int HCSR04::get_pulse_us()
 {
     return pulsedur;
 }

--- a/hcsr04.h	Thu May 07 04:14:57 2015 +0000
+++ b/hcsr04.h	Mon May 18 00:44:59 2015 +0000
@@ -35,6 +35,7 @@
 {
 public:
     static const double kMicrosecondsToCentimeters = 343.0 / 20000;
+    static const double kBogusPulse = 500 / kMicrosecondsToCentimeters;
     
     /** Create a HCSR04 object connected to the specified pin
     * @param pin i/o pin to connect to
@@ -46,10 +47,11 @@
     * @param distance in cms and returns -1, in case of failure
     */
     double get_dist_cm(void);
+    double get_max_dist_cm(void);
     /** Return the pulse duration equal to sonic waves travelling to obstacle and back to receiver.
     * @param pulse duration in microseconds.
     */
-    unsigned int get_pulse_us(void);
+    int get_pulse_us(void);
     /** Generates the trigger pulse of 10us on the trigger PIN.
     */
     void start(void );
@@ -65,7 +67,8 @@
     Timer pulsetime;
     DigitalOut  trigger;
     InterruptIn echo;
-    unsigned int pulsedur;
+    int pulsedur;
+    int maxpulse;
 };
 
 #endif
\ No newline at end of file

--- a/main.cpp	Thu May 07 04:14:57 2015 +0000
+++ b/main.cpp	Mon May 18 00:44:59 2015 +0000
@@ -7,9 +7,10 @@
 #include "GroveTemp.h"
 
 #include "StaticResource.h"
-#include "OnBoardLED.h"
+//#include "OnBoardLED.h"
 #include "TemperatureResource.h"
 #include "DistanceResource.h"
+#include "MaxDistanceResource.h"
 
 /* Terminal connection */
 RawSerial term(USBTX, USBRX);
@@ -28,9 +29,14 @@
 StaticResource latitude(&logger, "6/0/0", "35.296");
 StaticResource longitude(&logger, "6/0/1", "-120.677");
 
-DistanceResource distR(&logger, "3302/0/5600", &distS, true);
+DistanceResource distR(&logger, "3302/0/5700", &distS, true);
+MaxDistanceResource maxDistR(&logger, "3302/0/5602", &distS, true);
+StaticResource unitsDistR(&logger, "3302/0/5701", "cm");
+
 TemperatureResource tempR(&logger, "3303/0/5700", &tempS, true);
-LEDResource led(&logger, "3311/1/5706");
+StaticResource unitsTempR(&logger, "3302/0/5701", "Cel");
+
+//LEDResource led(&logger, "3311/1/5706");
 
 /* invoked through linker magic via Endpoint::start() */
 Connector::Options *configure_endpoint(Connector::OptionsBuilder &config)
@@ -44,8 +50,11 @@
                  .addResource(&latitude)
                  .addResource(&longitude)
                  .addResource(&distR)
+                 .addResource(&maxDistR)
+                 .addResource(&unitsDistR)
                  .addResource(&tempR)
-                 .addResource(&led)
+                 .addResource(&unitsTempR)
+                 //.addResource(&led)
                  .build();
 }
 

--- a/nsp_configuration.h	Thu May 07 04:14:57 2015 +0000
+++ b/nsp_configuration.h	Mon May 18 00:44:59 2015 +0000
@@ -25,7 +25,7 @@
  
  // NSP node name
  #define NODE_NAME_LENGTH         24
- #define NODE_NAME                "trashcan"
+ #define NODE_NAME                "Throop"
  
  // NSP Address (4 bytes for IPV4, 16 bytes for IPV6)
  #define NSP_IP_ADDRESS_LENGTH    4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/resource/MaxDistanceResource.h	Mon May 18 00:44:59 2015 +0000
@@ -0,0 +1,23 @@
+#ifndef MAX_DISTANCE_RESOURCE_H
+#define MAX_DISTANCE_RESOURCE_H
+
+#include "DynamicResource.h"
+#include "hcsr04.h"
+
+class MaxDistanceResource : public DynamicResource {
+public:
+    MaxDistanceResource(const Logger *logger, const char *name, HCSR04 *sensor, const bool observable = false)
+     : DynamicResource(logger, name, "MaxDistanceResource", SN_GRS_GET_ALLOWED, observable), sensor(sensor)
+    {}
+    
+    virtual string get()
+    {
+        char buf[10];
+        snprintf(buf, 10, "%0.2f", sensor->get_max_dist_cm());
+        return string(buf);
+    }
+private:
+    HCSR04 *sensor;
+};
+
+#endif
\ No newline at end of file