Charles Tritt / Mbed 2 deprecated PatientCounterMain

Count patients as the enter a waiting room.

Dependencies:   mbed

Fork of ForLoopIteration by Charles Tritt

main.cpp@1:3872cc92ceaf, 2017-10-17 (annotated)

Committer:
CSTritt
Date:
Tue Oct 17 15:26:16 2017 +0000
Revision:
1:3872cc92ceaf
Parent:
0:9475544275a6 
Initial Version. Working.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
CSTritt 0:9475544275a6 1 /*
CSTritt 1:3872cc92ceaf 2 Project: PatientCounterMain
CSTritt 0:9475544275a6 3 File: main.cpp
CSTritt 0:9475544275a6 4
CSTritt 1:3872cc92ceaf 5 Counts patients entering a leaving a waiting room. This version uses fuctions
CSTritt 1:3872cc92ceaf 6 that would otherwise be linked to interrupts.
CSTritt 0:9475544275a6 7
CSTritt 0:9475544275a6 8 The circuit:
CSTritt 0:9475544275a6 9
CSTritt 0:9475544275a6 10 Bargraph LEDs from pins 2 through 11 to ground via 330 Ohm resistors.
CSTritt 1:3872cc92ceaf 11 Pushbuttons between pins D14 & 15 and ground (internal pullup resistors
CSTritt 1:3872cc92ceaf 12 used.
CSTritt 0:9475544275a6 13
CSTritt 1:3872cc92ceaf 14 Created by C. S. Tritt 9/21/17 (v. 1.0)
CSTritt 0:9475544275a6 15
CSTritt 0:9475544275a6 16 This example code is in the public domain.
CSTritt 0:9475544275a6 17 */
CSTritt 0:9475544275a6 18
CSTritt 0:9475544275a6 19 #include "mbed.h"
CSTritt 0:9475544275a6 20
CSTritt 0:9475544275a6 21 BusOut bar_graph(D2,D3,D4,D5,D6,D7,D8,D9,D10,D11);
CSTritt 1:3872cc92ceaf 22
CSTritt 1:3872cc92ceaf 23 DigitalIn entered(D12, PullUp);
CSTritt 1:3872cc92ceaf 24 DigitalIn left(D13, PullUp);
CSTritt 1:3872cc92ceaf 25
CSTritt 1:3872cc92ceaf 26 int count = 0;
CSTritt 1:3872cc92ceaf 27
CSTritt 1:3872cc92ceaf 28 void countUp(void) {
CSTritt 1:3872cc92ceaf 29 count++;
CSTritt 1:3872cc92ceaf 30 printf("Counting up: %d.\n", count);
CSTritt 1:3872cc92ceaf 31 }
CSTritt 1:3872cc92ceaf 32
CSTritt 1:3872cc92ceaf 33 void countDown(void) {
CSTritt 1:3872cc92ceaf 34 if (count > 0) count--;
CSTritt 1:3872cc92ceaf 35 printf("Counting up: %d.\n", count);
CSTritt 1:3872cc92ceaf 36 }
CSTritt 0:9475544275a6 37
CSTritt 0:9475544275a6 38 int main() {
CSTritt 0:9475544275a6 39 while(true) { // Keep the lights going back and forth forever.
CSTritt 0:9475544275a6 40
CSTritt 1:3872cc92ceaf 41 if (!entered) { // Account for entries.
CSTritt 1:3872cc92ceaf 42 while (!entered); // Wait for button release.
CSTritt 1:3872cc92ceaf 43 countUp();
CSTritt 0:9475544275a6 44 }
CSTritt 1:3872cc92ceaf 45 if (!left) { // Account for departures.
CSTritt 1:3872cc92ceaf 46 while (!left); // Wait for button release.
CSTritt 1:3872cc92ceaf 47 countDown();
CSTritt 0:9475544275a6 48 }
CSTritt 1:3872cc92ceaf 49 // Send count to console.
CSTritt 1:3872cc92ceaf 50 printf("Count: %d, Entered: %d, Left: %d.\n", count, (int) entered,
CSTritt 1:3872cc92ceaf 51 (int) left);
CSTritt 1:3872cc92ceaf 52 bar_graph = count; // Show count on bar.
CSTritt 1:3872cc92ceaf 53 wait(0.05); // Pause.
CSTritt 0:9475544275a6 54 }
CSTritt 0:9475544275a6 55 }