joshema 216 / Mbed 2 deprecated TAREA_4_GPS_GSM

Procesadores, 2016 - II. Tarea #4. Oswaldo Andrés Giraldo Giraldo, Héctor Andrés Hoyos Ceballos, Jose Fernando Montoya Vargas, María Fernanda Villa Tamayo. Programa para establecer la comunicación con el módem Siemens A56, la lectura de coordenadas de GPS que son transmitidas en una UART por medio de un Dongle USB y la conversión de datos en formato ASCII a PDU.

Dependencies:   GPS_G mbed

Fork of TareaGPS_Siemens by Gustavo Ramirez

DebouncedIn.cpp@2:ea6275d1222f, 2016-11-18 (annotated)

Committer:
joshema216
Date:
Fri Nov 18 21:27:40 2016 +0000
Revision:
2:ea6275d1222f
Parent:
0:b2a6aa7c0c8c 
Version 1.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
procesadores_FAC 0:b2a6aa7c0c8c 1 #include "DebouncedIn.h"
procesadores_FAC 0:b2a6aa7c0c8c 2 #include "mbed.h"
procesadores_FAC 0:b2a6aa7c0c8c 3
procesadores_FAC 0:b2a6aa7c0c8c 4 /*
procesadores_FAC 0:b2a6aa7c0c8c 5 * Constructor
procesadores_FAC 0:b2a6aa7c0c8c 6 */
procesadores_FAC 0:b2a6aa7c0c8c 7 DebouncedIn::DebouncedIn(PinName in)
procesadores_FAC 0:b2a6aa7c0c8c 8 : _in(in) {
procesadores_FAC 0:b2a6aa7c0c8c 9
procesadores_FAC 0:b2a6aa7c0c8c 10 // reset all the flags and counters
procesadores_FAC 0:b2a6aa7c0c8c 11 _samples = 0;
procesadores_FAC 0:b2a6aa7c0c8c 12 _output = 0;
procesadores_FAC 0:b2a6aa7c0c8c 13 _output_last = 0;
procesadores_FAC 0:b2a6aa7c0c8c 14 _rising_flag = 0;
procesadores_FAC 0:b2a6aa7c0c8c 15 _falling_flag = 0;
procesadores_FAC 0:b2a6aa7c0c8c 16 _state_counter = 0;
procesadores_FAC 0:b2a6aa7c0c8c 17
procesadores_FAC 0:b2a6aa7c0c8c 18 // Attach ticker
procesadores_FAC 0:b2a6aa7c0c8c 19 _ticker.attach(this, &DebouncedIn::_sample, 0.005);
procesadores_FAC 0:b2a6aa7c0c8c 20 }
procesadores_FAC 0:b2a6aa7c0c8c 21
procesadores_FAC 0:b2a6aa7c0c8c 22 void DebouncedIn::_sample() {
procesadores_FAC 0:b2a6aa7c0c8c 23
procesadores_FAC 0:b2a6aa7c0c8c 24 // take a sample
procesadores_FAC 0:b2a6aa7c0c8c 25 _samples = _samples >> 1; // shift left
procesadores_FAC 0:b2a6aa7c0c8c 26
procesadores_FAC 0:b2a6aa7c0c8c 27 if (_in) {
procesadores_FAC 0:b2a6aa7c0c8c 28 _samples |= 0x80;
procesadores_FAC 0:b2a6aa7c0c8c 29 }
procesadores_FAC 0:b2a6aa7c0c8c 30
procesadores_FAC 0:b2a6aa7c0c8c 31 // examine the sample window, look for steady state
procesadores_FAC 0:b2a6aa7c0c8c 32 if (_samples == 0x00) {
procesadores_FAC 0:b2a6aa7c0c8c 33 _output = 0;
procesadores_FAC 0:b2a6aa7c0c8c 34 }
procesadores_FAC 0:b2a6aa7c0c8c 35 else if (_samples == 0xFF) {
procesadores_FAC 0:b2a6aa7c0c8c 36 _output = 1;
procesadores_FAC 0:b2a6aa7c0c8c 37 }
procesadores_FAC 0:b2a6aa7c0c8c 38
procesadores_FAC 0:b2a6aa7c0c8c 39
procesadores_FAC 0:b2a6aa7c0c8c 40 // Rising edge detection
procesadores_FAC 0:b2a6aa7c0c8c 41 if ((_output == 1) && (_output_last == 0)) {
procesadores_FAC 0:b2a6aa7c0c8c 42 _rising_flag++;
procesadores_FAC 0:b2a6aa7c0c8c 43 _state_counter = 0;
procesadores_FAC 0:b2a6aa7c0c8c 44 }
procesadores_FAC 0:b2a6aa7c0c8c 45
procesadores_FAC 0:b2a6aa7c0c8c 46 // Falling edge detection
procesadores_FAC 0:b2a6aa7c0c8c 47 else if ((_output == 0) && (_output_last == 1)) {
procesadores_FAC 0:b2a6aa7c0c8c 48 _falling_flag++;
procesadores_FAC 0:b2a6aa7c0c8c 49 _state_counter = 0;
procesadores_FAC 0:b2a6aa7c0c8c 50 }
procesadores_FAC 0:b2a6aa7c0c8c 51
procesadores_FAC 0:b2a6aa7c0c8c 52 // steady state
procesadores_FAC 0:b2a6aa7c0c8c 53 else {
procesadores_FAC 0:b2a6aa7c0c8c 54 _state_counter++;
procesadores_FAC 0:b2a6aa7c0c8c 55 }
procesadores_FAC 0:b2a6aa7c0c8c 56
procesadores_FAC 0:b2a6aa7c0c8c 57 // update the output
procesadores_FAC 0:b2a6aa7c0c8c 58 _output_last = _output;
procesadores_FAC 0:b2a6aa7c0c8c 59
procesadores_FAC 0:b2a6aa7c0c8c 60 }
procesadores_FAC 0:b2a6aa7c0c8c 61
procesadores_FAC 0:b2a6aa7c0c8c 62
procesadores_FAC 0:b2a6aa7c0c8c 63
procesadores_FAC 0:b2a6aa7c0c8c 64 // return number of rising edges
procesadores_FAC 0:b2a6aa7c0c8c 65 int DebouncedIn::rising(void) {
procesadores_FAC 0:b2a6aa7c0c8c 66 int return_value = _rising_flag;
procesadores_FAC 0:b2a6aa7c0c8c 67 _rising_flag = 0;
procesadores_FAC 0:b2a6aa7c0c8c 68 return(return_value);
procesadores_FAC 0:b2a6aa7c0c8c 69 }
procesadores_FAC 0:b2a6aa7c0c8c 70
procesadores_FAC 0:b2a6aa7c0c8c 71 // return number of falling edges
procesadores_FAC 0:b2a6aa7c0c8c 72 int DebouncedIn::falling(void) {
procesadores_FAC 0:b2a6aa7c0c8c 73 int return_value = _falling_flag;
procesadores_FAC 0:b2a6aa7c0c8c 74 _falling_flag = 0;
procesadores_FAC 0:b2a6aa7c0c8c 75 return(return_value);
procesadores_FAC 0:b2a6aa7c0c8c 76 }
procesadores_FAC 0:b2a6aa7c0c8c 77
procesadores_FAC 0:b2a6aa7c0c8c 78 // return number of ticsk we've bene steady for
procesadores_FAC 0:b2a6aa7c0c8c 79 int DebouncedIn::steady(void) {
procesadores_FAC 0:b2a6aa7c0c8c 80 return(_state_counter);
procesadores_FAC 0:b2a6aa7c0c8c 81 }
procesadores_FAC 0:b2a6aa7c0c8c 82
procesadores_FAC 0:b2a6aa7c0c8c 83 // return the debounced status
procesadores_FAC 0:b2a6aa7c0c8c 84 int DebouncedIn::read(void) {
procesadores_FAC 0:b2a6aa7c0c8c 85 return(_output);
procesadores_FAC 0:b2a6aa7c0c8c 86 }
procesadores_FAC 0:b2a6aa7c0c8c 87
procesadores_FAC 0:b2a6aa7c0c8c 88 // shorthand for read()
procesadores_FAC 0:b2a6aa7c0c8c 89 DebouncedIn::operator int() {
procesadores_FAC 0:b2a6aa7c0c8c 90 return read();
procesadores_FAC 0:b2a6aa7c0c8c 91 }
procesadores_FAC 0:b2a6aa7c0c8c 92
procesadores_FAC 0:b2a6aa7c0c8c 93