fuyuno sakura / Mbed 2 deprecated PINGTEST

SEEED STUDIO SEN136B5B test (Using PING library in local)

Dependencies:   mbed

PING.h@0:02a23e3031ee, 2012-09-24 (annotated)

Committer:
mio
Date:
Mon Sep 24 15:52:56 2012 +0000
Revision:
0:02a23e3031ee
Import PING code to local.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mio 0:02a23e3031ee 1 #ifndef MBED_PING_H
mio 0:02a23e3031ee 2 #define MBED_PING_H
mio 0:02a23e3031ee 3 #include "mbed.h"
mio 0:02a23e3031ee 4
mio 0:02a23e3031ee 5 /* Class: PING
mio 0:02a23e3031ee 6 * Abstraction for the PING Ultrasonic range finder
mio 0:02a23e3031ee 7 *
mio 0:02a23e3031ee 8 * Example:
mio 0:02a23e3031ee 9 * > // Print measured distance
mio 0:02a23e3031ee 10 * >
mio 0:02a23e3031ee 11 * > #include "mbed.h"
mio 0:02a23e3031ee 12 * > #include "PING.h"
mio 0:02a23e3031ee 13 * >
mio 0:02a23e3031ee 14 * > PING ping(p9);
mio 0:02a23e3031ee 15 * >
mio 0:02a23e3031ee 16 * > int main() {
mio 0:02a23e3031ee 17 * > while(1) {
mio 0:02a23e3031ee 18 * > printf("Measured : %.1f\n", ping.read());
mio 0:02a23e3031ee 19 * > wait(0.2);
mio 0:02a23e3031ee 20 * > }
mio 0:02a23e3031ee 21 * > }
mio 0:02a23e3031ee 22 */
mio 0:02a23e3031ee 23 class PING
mio 0:02a23e3031ee 24 {
mio 0:02a23e3031ee 25 // Public functions
mio 0:02a23e3031ee 26 public:
mio 0:02a23e3031ee 27 /* Constructor: PING
mio 0:02a23e3031ee 28 * Create a PING object, connected to the specified pins
mio 0:02a23e3031ee 29 *
mio 0:02a23e3031ee 30 * Variables:
mio 0:02a23e3031ee 31 * trigger - Output to trigger the PING
mio 0:02a23e3031ee 32 */
mio 0:02a23e3031ee 33 PING(PinName trigger);
mio 0:02a23e3031ee 34
mio 0:02a23e3031ee 35 /* Function: read
mio 0:02a23e3031ee 36 * A non-blocking function that will return the last measurement
mio 0:02a23e3031ee 37 *
mio 0:02a23e3031ee 38 * Variables:
mio 0:02a23e3031ee 39 * returns - floating point representation in cm.
mio 0:02a23e3031ee 40 */
mio 0:02a23e3031ee 41 float read(void);
mio 0:02a23e3031ee 42
mio 0:02a23e3031ee 43 /* Function: read_in
mio 0:02a23e3031ee 44 * A non-blocking function that will return the last measurement
mio 0:02a23e3031ee 45 *
mio 0:02a23e3031ee 46 * Variables:
mio 0:02a23e3031ee 47 * returns - floating point representation in in.
mio 0:02a23e3031ee 48 */
mio 0:02a23e3031ee 49 float read_in(void);
mio 0:02a23e3031ee 50
mio 0:02a23e3031ee 51 /* Function: operator float
mio 0:02a23e3031ee 52 * A short hand way of using the read function
mio 0:02a23e3031ee 53 *
mio 0:02a23e3031ee 54 * Example:
mio 0:02a23e3031ee 55 * > float range = ping.read();
mio 0:02a23e3031ee 56 * > float range = ping;
mio 0:02a23e3031ee 57 * >
mio 0:02a23e3031ee 58 * > if(ping.read() > 0.25) { ... }
mio 0:02a23e3031ee 59 * > if(ping > 0.25) { ... }
mio 0:02a23e3031ee 60 */
mio 0:02a23e3031ee 61 operator float();
mio 0:02a23e3031ee 62
mio 0:02a23e3031ee 63 private :
mio 0:02a23e3031ee 64 DigitalInOut _trigger;
mio 0:02a23e3031ee 65 Timer _timer;
mio 0:02a23e3031ee 66 Ticker _ticker;
mio 0:02a23e3031ee 67 void _startRange(void);
mio 0:02a23e3031ee 68 float _dist;
mio 0:02a23e3031ee 69 int _invalidctr;
mio 0:02a23e3031ee 70 };
mio 0:02a23e3031ee 71
mio 0:02a23e3031ee 72 #endif