Balan Gheorghe / Mbed 2 deprecated rtos

rtos test

Dependencies:   mbed-rtos mbed

Fork of rtos-test by Ryuichiro Ohira

hcsr04/hcsr04.cpp@1:ae213d6a0adf, 2016-05-14 (annotated)

Committer:
machines94
Date:
Sat May 14 21:15:12 2016 +0000
Revision:
1:ae213d6a0adf
Electromobility 2016

;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
machines94 1:ae213d6a0adf 1 /* Copyright (c) 2013 Prabhu Desai
machines94 1:ae213d6a0adf 2 * pdtechworld@gmail.com
machines94 1:ae213d6a0adf 3 *
machines94 1:ae213d6a0adf 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
machines94 1:ae213d6a0adf 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
machines94 1:ae213d6a0adf 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
machines94 1:ae213d6a0adf 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
machines94 1:ae213d6a0adf 8 * furnished to do so, subject to the following conditions:
machines94 1:ae213d6a0adf 9 *
machines94 1:ae213d6a0adf 10 * The above copyright notice and this permission notice shall be included in all copies or
machines94 1:ae213d6a0adf 11 * substantial portions of the Software.
machines94 1:ae213d6a0adf 12 *
machines94 1:ae213d6a0adf 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
machines94 1:ae213d6a0adf 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
machines94 1:ae213d6a0adf 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
machines94 1:ae213d6a0adf 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
machines94 1:ae213d6a0adf 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
machines94 1:ae213d6a0adf 18 */
machines94 1:ae213d6a0adf 19
machines94 1:ae213d6a0adf 20
machines94 1:ae213d6a0adf 21 #include "hcsr04.h"
machines94 1:ae213d6a0adf 22
machines94 1:ae213d6a0adf 23
machines94 1:ae213d6a0adf 24 HCSR04::HCSR04(PinName TrigPin,PinName EchoPin):
machines94 1:ae213d6a0adf 25 trigger(TrigPin), echo(EchoPin)
machines94 1:ae213d6a0adf 26 {
machines94 1:ae213d6a0adf 27 pulsetime.stop();
machines94 1:ae213d6a0adf 28 pulsetime.reset();
machines94 1:ae213d6a0adf 29 echo.rise(this,&HCSR04::isr_rise);
machines94 1:ae213d6a0adf 30 echo.fall(this,&HCSR04::isr_fall);
machines94 1:ae213d6a0adf 31 trigger=0;
machines94 1:ae213d6a0adf 32 }
machines94 1:ae213d6a0adf 33
machines94 1:ae213d6a0adf 34 HCSR04::~HCSR04()
machines94 1:ae213d6a0adf 35 {
machines94 1:ae213d6a0adf 36 }
machines94 1:ae213d6a0adf 37
machines94 1:ae213d6a0adf 38 void HCSR04::isr_rise(void)
machines94 1:ae213d6a0adf 39 {
machines94 1:ae213d6a0adf 40 pulsetime.start();
machines94 1:ae213d6a0adf 41 }
machines94 1:ae213d6a0adf 42 void HCSR04::start(void)
machines94 1:ae213d6a0adf 43 {
machines94 1:ae213d6a0adf 44 trigger=1;
machines94 1:ae213d6a0adf 45 wait_us(10);
machines94 1:ae213d6a0adf 46 trigger=0;
machines94 1:ae213d6a0adf 47 }
machines94 1:ae213d6a0adf 48
machines94 1:ae213d6a0adf 49 void HCSR04::isr_fall(void)
machines94 1:ae213d6a0adf 50 {
machines94 1:ae213d6a0adf 51 pulsetime.stop();
machines94 1:ae213d6a0adf 52 pulsedur = pulsetime.read_us();
machines94 1:ae213d6a0adf 53 distance= (pulsedur*343)/20000;
machines94 1:ae213d6a0adf 54 pulsetime.reset();
machines94 1:ae213d6a0adf 55 }
machines94 1:ae213d6a0adf 56
machines94 1:ae213d6a0adf 57 void HCSR04::rise (void (*fptr)(void))
machines94 1:ae213d6a0adf 58 {
machines94 1:ae213d6a0adf 59 echo.rise(fptr);
machines94 1:ae213d6a0adf 60 }
machines94 1:ae213d6a0adf 61 void HCSR04::fall (void (*fptr)(void))
machines94 1:ae213d6a0adf 62 {
machines94 1:ae213d6a0adf 63 echo.fall(fptr);
machines94 1:ae213d6a0adf 64 }
machines94 1:ae213d6a0adf 65
machines94 1:ae213d6a0adf 66 unsigned int HCSR04::get_dist_cm()
machines94 1:ae213d6a0adf 67 {
machines94 1:ae213d6a0adf 68 return distance;
machines94 1:ae213d6a0adf 69 }
machines94 1:ae213d6a0adf 70 unsigned int HCSR04::get_pulse_us()
machines94 1:ae213d6a0adf 71 {
machines94 1:ae213d6a0adf 72 return pulsedur;
machines94 1:ae213d6a0adf 73 }
machines94 1:ae213d6a0adf 74
machines94 1:ae213d6a0adf 75
machines94 1:ae213d6a0adf 76
machines94 1:ae213d6a0adf 77 /*******************************************************
machines94 1:ae213d6a0adf 78 Here is a sample code usage
machines94 1:ae213d6a0adf 79 *********************************************************
machines94 1:ae213d6a0adf 80 #include "hcsr04.h"
machines94 1:ae213d6a0adf 81 HCSR04 usensor(p25,p6);
machines94 1:ae213d6a0adf 82 int main()
machines94 1:ae213d6a0adf 83 {
machines94 1:ae213d6a0adf 84 unsigned char count=0;
machines94 1:ae213d6a0adf 85 while(1) {
machines94 1:ae213d6a0adf 86 usensor.start();
machines94 1:ae213d6a0adf 87 wait_ms(500);
machines94 1:ae213d6a0adf 88 dist=usensor.get_dist_cm();
machines94 1:ae213d6a0adf 89 lcd.cls();
machines94 1:ae213d6a0adf 90 lcd.locate(0,0);
machines94 1:ae213d6a0adf 91 lcd.printf("cm:%ld",dist );
machines94 1:ae213d6a0adf 92
machines94 1:ae213d6a0adf 93 count++;
machines94 1:ae213d6a0adf 94 lcd.locate(0,1);
machines94 1:ae213d6a0adf 95 lcd.printf("Distance =%d",count);
machines94 1:ae213d6a0adf 96
machines94 1:ae213d6a0adf 97 }
machines94 1:ae213d6a0adf 98 */