Pillminder Arduino Code

pillminder.ino

#include <Adafruit_LEDBackpack.h>
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <Wire.h>

const char* ssid = "xxxxxx";
const char* password = "xxxxxxx";

const char* host = "api.pushover.net";
const int httpsPort = 443;

const char* token = "apixxxxxx";
const char* user = "xxxxxx";

#define DIVISOR 1  // Raise this for debugging purposes
#define SECONDS_PER_HOUR (60*60)
const unsigned long limit_seconds = LIMIT_HOURS * SECONDS_PER_HOUR;

// Use web browser to view and copy
// SHA1 fingerprint of the certificate
const char* fingerprint = "1E D5 B7 68 BB 25 AD A3 E0 96 78 A4 68 48 08 4F 07 E4 8D AB";

Adafruit_7segment matrix = Adafruit_7segment();
unsigned long lastStart = 0;
bool alerted = false;

#define LIMIT_HOURS 23

void resetClock() {
  alerted = false;
  matrix.setBrightness(2);
  matrix.blinkRate(0);
  lastStart = millis();
}

void alert() {
  alerted = true;
  matrix.setBrightness(5);
  matrix.blinkRate(2);

  WiFiClientSecure client;
  if (!client.connect(host, httpsPort)) {
    Serial.println("connection failed");
    return;
  }

  if (client.verify(fingerprint, host)) {
    Serial.println("certificate matches");
  } else {
    Serial.println("certificate doesn't match");
    return;
  }

  String url = "/1/messages.json";
  String payload = String("token=") + token + "&" +
               "title=Take%20Your%20Pill&" +
               "message=It+has+been+" + String(LIMIT_HOURS) + "+hours&" +
               "user=" + user;

  client.print(String("POST ") + url + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" +
               "Content-Type: application/x-www-form-urlencoded\r\n" +
               "Content-Length: " + String(payload.length()) + "\r\n" +
               "Connection: close\r\n\r\n" +
               payload
               );

  while (client.connected()) {
    String line = client.readStringUntil('\n');
    if (line == "\r") {
      break;
    }
  }
  String line = client.readStringUntil('\n');
}

void setup() {
  Serial.begin(115200);
  Serial.println();
  Wire.begin(13,12);
  matrix.begin(0x70);
  
  Serial.print("connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());


}

bool dot = true;


void loop() {
  unsigned long delta = millis() - lastStart;
  unsigned long seconds = delta / DIVISOR;

  if(delta % DIVISOR == 0) {
    unsigned long minutes = (seconds / 60) % 60;
    unsigned long hours = seconds / (60*60);

    matrix.print((hours*100) + minutes, DEC);
    matrix.writeDigitNum(0, (hours/10) % 10, hours > 100);
    matrix.writeDigitNum(1, (hours % 10));
    matrix.drawColon(true);
    matrix.writeDigitNum(3, minutes / 10);
    matrix.writeDigitNum(4, minutes % 10, dot);
    matrix.writeDisplay();
    dot = !dot;
  }

  if(seconds > limit_seconds && !alerted)
    alert();
}