Count patients as they enter and leave a waiting room. Not working due to button bounce.
Fork of ForLoopIteration by
main.cpp
- Committer:
- CSTritt
- Date:
- 2017-10-17
- Revision:
- 1:0dc1ade9379d
- Parent:
- 0:9475544275a6
File content as of revision 1:0dc1ade9379d:
/* Project: PatientCounterIntrp File: main.cpp Demonstrates the use of interupts to count patients entering a leaving a waiting room. However, button bounce appears to make this approach leads to bounce. The circuit: Bargraph LEDs from pins 2 through 11 to ground via 330 Ohm resistors. Pushbuttons between pins D14 & 15 and ground (internal pullup resistors used. Created by C. S. Tritt 9/21/17 (v. 1.0) This example code is in the public domain. */ #include "mbed.h" BusOut bar_graph(D2,D3,D4,D5,D6,D7,D8,D9,D10,D11); InterruptIn inSensor(D12); InterruptIn outSensor(D13); int count = 0; void countUp(void) { count++; } void countDown(void) { if (count > 0) count--; } int main() { inSensor.fall(&countUp); outSensor.fall(&countDown); while(true) { // Keep the lights going back and forth forever. bar_graph = count; // Show count on bar. // Send count to console. printf("Count: %d.\n", count); wait(0.5); // Pause. } }