Marliz Dume / Mbed 2 deprecated Final_project_Tran2

jkk

Dependencies:   mbed RGB-fun HC_SR04_Ultrasonic_Library xbee_lib

hcsr04.cpp@1:7fbedf384fe9, 2020-04-10 (annotated)

Committer:
pimani
Date:
Fri Apr 10 15:34:46 2020 +0000
Revision:
1:7fbedf384fe9
Transmitter codes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pimani 1:7fbedf384fe9 1 /* Copyright (c) 2013 Prabhu Desai
pimani 1:7fbedf384fe9 2 * pdtechworld@gmail.com
pimani 1:7fbedf384fe9 3 *
pimani 1:7fbedf384fe9 4 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
pimani 1:7fbedf384fe9 5 * and associated documentation files (the "Software"), to deal in the Software without restriction,
pimani 1:7fbedf384fe9 6 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
pimani 1:7fbedf384fe9 7 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
pimani 1:7fbedf384fe9 8 * furnished to do so, subject to the following conditions:
pimani 1:7fbedf384fe9 9 *
pimani 1:7fbedf384fe9 10 * The above copyright notice and this permission notice shall be included in all copies or
pimani 1:7fbedf384fe9 11 * substantial portions of the Software.
pimani 1:7fbedf384fe9 12 *
pimani 1:7fbedf384fe9 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
pimani 1:7fbedf384fe9 14 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
pimani 1:7fbedf384fe9 15 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
pimani 1:7fbedf384fe9 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
pimani 1:7fbedf384fe9 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
pimani 1:7fbedf384fe9 18 */
pimani 1:7fbedf384fe9 19
pimani 1:7fbedf384fe9 20
pimani 1:7fbedf384fe9 21 #include "hcsr04.h"
pimani 1:7fbedf384fe9 22
pimani 1:7fbedf384fe9 23
pimani 1:7fbedf384fe9 24 HCSR04::HCSR04(PinName TrigPin,PinName EchoPin):
pimani 1:7fbedf384fe9 25 trigger(TrigPin), echo(EchoPin)
pimani 1:7fbedf384fe9 26 {
pimani 1:7fbedf384fe9 27 pulsetime.stop();
pimani 1:7fbedf384fe9 28 pulsetime.reset();
pimani 1:7fbedf384fe9 29 echo.rise(this,&HCSR04::isr_rise);
pimani 1:7fbedf384fe9 30 echo.fall(this,&HCSR04::isr_fall);
pimani 1:7fbedf384fe9 31 trigger=0;
pimani 1:7fbedf384fe9 32 }
pimani 1:7fbedf384fe9 33
pimani 1:7fbedf384fe9 34 HCSR04::~HCSR04()
pimani 1:7fbedf384fe9 35 {
pimani 1:7fbedf384fe9 36 }
pimani 1:7fbedf384fe9 37
pimani 1:7fbedf384fe9 38 void HCSR04::isr_rise(void)
pimani 1:7fbedf384fe9 39 {
pimani 1:7fbedf384fe9 40 pulsetime.start();
pimani 1:7fbedf384fe9 41 }
pimani 1:7fbedf384fe9 42 void HCSR04::start(void)
pimani 1:7fbedf384fe9 43 {
pimani 1:7fbedf384fe9 44 trigger=1;
pimani 1:7fbedf384fe9 45 wait_us(10);
pimani 1:7fbedf384fe9 46 trigger=0;
pimani 1:7fbedf384fe9 47 }
pimani 1:7fbedf384fe9 48
pimani 1:7fbedf384fe9 49 void HCSR04::isr_fall(void)
pimani 1:7fbedf384fe9 50 {
pimani 1:7fbedf384fe9 51 pulsetime.stop();
pimani 1:7fbedf384fe9 52 pulsedur = pulsetime.read_us();
pimani 1:7fbedf384fe9 53 distance= (pulsedur*343)/20000;
pimani 1:7fbedf384fe9 54 pulsetime.reset();
pimani 1:7fbedf384fe9 55 }
pimani 1:7fbedf384fe9 56
pimani 1:7fbedf384fe9 57 void HCSR04::rise (void (*fptr)(void))
pimani 1:7fbedf384fe9 58 {
pimani 1:7fbedf384fe9 59 echo.rise(fptr);
pimani 1:7fbedf384fe9 60 }
pimani 1:7fbedf384fe9 61 void HCSR04::fall (void (*fptr)(void))
pimani 1:7fbedf384fe9 62 {
pimani 1:7fbedf384fe9 63 echo.fall(fptr);
pimani 1:7fbedf384fe9 64 }
pimani 1:7fbedf384fe9 65
pimani 1:7fbedf384fe9 66 unsigned int HCSR04::get_dist_cm()
pimani 1:7fbedf384fe9 67 {
pimani 1:7fbedf384fe9 68 return distance;
pimani 1:7fbedf384fe9 69 }
pimani 1:7fbedf384fe9 70 unsigned int HCSR04::get_pulse_us()
pimani 1:7fbedf384fe9 71 {
pimani 1:7fbedf384fe9 72 return pulsedur;
pimani 1:7fbedf384fe9 73 }
pimani 1:7fbedf384fe9 74
pimani 1:7fbedf384fe9 75
pimani 1:7fbedf384fe9 76
pimani 1:7fbedf384fe9 77 /*******************************************************
pimani 1:7fbedf384fe9 78 Here is a sample code usage
pimani 1:7fbedf384fe9 79 *********************************************************
pimani 1:7fbedf384fe9 80 #include "hcsr04.h"
pimani 1:7fbedf384fe9 81 HCSR04 usensor(p25,p6);
pimani 1:7fbedf384fe9 82 int main()
pimani 1:7fbedf384fe9 83 {
pimani 1:7fbedf384fe9 84 unsigned char count=0;
pimani 1:7fbedf384fe9 85 while(1) {
pimani 1:7fbedf384fe9 86 usensor.start();
pimani 1:7fbedf384fe9 87 wait_ms(500);
pimani 1:7fbedf384fe9 88 dist=usensor.get_dist_cm();
pimani 1:7fbedf384fe9 89 lcd.cls();
pimani 1:7fbedf384fe9 90 lcd.locate(0,0);
pimani 1:7fbedf384fe9 91 lcd.printf("cm:%ld",dist );
pimani 1:7fbedf384fe9 92
pimani 1:7fbedf384fe9 93 count++;
pimani 1:7fbedf384fe9 94 lcd.locate(0,1);
pimani 1:7fbedf384fe9 95 lcd.printf("Distance =%d",count);
pimani 1:7fbedf384fe9 96
pimani 1:7fbedf384fe9 97 }
pimani 1:7fbedf384fe9 98 */