Photo-interrupter Brick

// Photo-interrupter Brick (TP-K12): quick start
// Reads the brick and shows the value on the TinkerPie matrix and in the Serial Monitor (115200 baud).
#include <TinkerPie.h>
#include <TinkerPieBricks.h>
using namespace tinkerpie;

tpb::KitSensor s;

void setup() {
  Serial.begin(115200);
  tinkerpie::begin();            // also starts the SENSOR ports (I2C bus Wire1)
  if (!s.begin()) Serial.println("Photo-interrupter Brick not found at 0x08: check the cable to SENSOR 1-4");
}

void loop() {
  bool level = s.state();            // the S pin, debounced
  uint8_t n = s.events();            // how many times it fired (counts up, wraps at 255)
  Serial.printf("S = %d   events = %u\n", level, n);
  if (level) led::fill(Colors::Green); else basic::clearScreen();
  basic::pause(100);
}

// Object counter: Photo-interrupter Brick (TP-K12)
// Drop coins, marbles or paper strips through the slot. Each one that breaks the beam adds one to the count. Button A resets.
#include <TinkerPie.h>
#include <TinkerPieBricks.h>
using namespace tinkerpie;

tpb::KitSensor slot;
uint8_t last = 0;
int count = 0;

void setup() {
  Serial.begin(115200);
  tinkerpie::begin();            // also starts the SENSOR ports (I2C bus Wire1)
  if (!slot.begin()) Serial.println("Photo-interrupter Brick not found at 0x08: check the cable to SENSOR 1-4");
  last = slot.events();
}

void loop() {
  uint8_t n = slot.events();
  if (n != last) { count += (uint8_t) (n - last); last = n; music::playTone(1200, 40); basic::showNumber(count, Colors::Yellow); }
  if (input::buttonIsPressed(Button::A)) { count = 0; basic::showNumber(0, Colors::Yellow); }
  basic::pause(10);
}