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myClock.ino
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myClock.ino
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/* myClock -- ESP8266 WiFi NTP Clock for pixel displays
Copyright (c) 2019 David M Denney <[email protected]>
distributed under the terms of the MIT License
*/
// ESP8266 requires https://github.com/esp8266/Arduino
// https://github.com/esp8266/Arduino#using-git-version-basic-instructions
// ESP32 requires https://github.com/espressif/arduino-esp32
// https://github.com/espressif/arduino-esp32#installation-instructions
#include <ArduinoJson.h> // https://github.com/bblanchon/ArduinoJson/releases/latest
#include <WiFiManager.h> // https://github.com/tzapu/WiFiManager/tree/development
#include <ArduinoOTA.h>
#include <FS.h>
#include <time.h>
#include "display.h"
#if defined(ESP8266)
#include <ESP8266mDNS.h>
#include <ESP8266HTTPClient.h>
ESP8266WebServer server(80);
#else
#include <ESPmDNS.h>
#include <SPIFFS.h>
#include <HTTPClient.h>
WebServer server(80);
#endif
#define APPNAME "myClock"
#define VERSION "0.10.4"
#define ADMIN_USER "admin" // WebServer logon username
//#define DS18 // enable DS18B20 temperature sensor
//#define SYSLOG // enable SYSLOG support
#define LIGHT // enable LDR light sensor
#define WDELAY 900 // delay 15 min between weather updates
#define myOUT 1 // {0 = NullStream, 1 = Serial, 2 = Bluetooth}
#if myOUT == 0 // NullStream output
NullStream NullStream;
Stream & OUT = NullStream;
#elif myOUT == 2 // Bluetooth output, only on ESP32
#include "BluetoothSerial.h"
BluetoothSerial SerialBT;
Stream & OUT = SerialBT;
#else // Serial output default
Stream & OUT = Serial;
#endif
String tzKey; // API key from https://timezonedb.com/register
String owKey; // API key from https://home.openweathermap.org/api_keys
String softAPpass = "ConFigMe"; // password for SoftAP config and WebServer logon, minimum 8 characters
uint8_t brightness = 255; // 0-255 display brightness
bool milTime = true; // set false for 12hour clock
String location; // zipcode or empty for geoIP location
String timezone; // timezone from https://timezonedb.com/time-zones or empty for geoIP
int threshold = 500; // below this value display will dim, incrementally
bool celsius = false; // set true to display temp in celsius
String language = "en"; // font does not support all languages
String countryCode = "US"; // default US, automatically set based on public IP address
// Syslog server wireless debugging and monitoring
#ifdef SYSLOG
#include <Syslog.h> // https://github.com/arcao/Syslog
WiFiUDP udpClient;
Syslog syslog(udpClient, SYSLOG_PROTO_IETF);
String syslogSrv = "syslog";
uint16_t syslogPort = 514;
#endif
// DS18B20 temperature sensor for local/indoor temp display
#ifdef DS18
#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS D3
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
int Temp;
#endif
static const char* UserAgent PROGMEM = "myClock/1.0 (Arduino ESP8266)";
time_t TWOAM, pNow, wDelay;
uint8_t pHH, pMM, pSS;
uint16_t light = threshold;
long offset;
char HOST[20];
uint8_t dim;
void setup() {
#if myOUT == 0
Serial.end(); // close serial if not used
#else
Serial.begin(115200);
while (!Serial) delay(10); // wait for Serial to start
Serial.println();
#endif
#if myOUT == 2
if (!SerialBT.begin(APPNAME)) {
Serial.println(F("Bluetooth failed"));
delay(5000);
ESP.restart();
}
delay(5000); // wait for client to connect
#endif
readSPIFFS(); // fetch stored configuration
display.begin(16);
display_ticker.attach(0.002, display_updater);
display.clearDisplay();
display.setFont(&TomThumb);
display.setTextWrap(false);
display.setTextColor(myColor);
display.setBrightness(brightness);
drawImage(0, 0); // display splash image while connecting and setting time
#ifdef DS18
sensors.begin(); // start temp sensor
#endif
startWiFi();
#ifdef SYSLOG
syslog.server(syslogSrv.c_str(), syslogPort); // configure syslog server
syslog.deviceHostname(HOST);
syslog.appName(APPNAME);
syslog.defaultPriority(LOG_INFO);
#endif
if (location == "") location = getIPlocation(); // get postal code and/or timezone as needed
else while (timezone == "") getIPlocation();
display.clearDisplay(); // display hostname, ip address, timezone, version
display.setCursor(2, row1);
display.setTextColor(myGREEN);
display.print(HOST);
display.setCursor(2, row2);
display.setTextColor(myBLUE);
display.print(WiFi.localIP());
display.setCursor(2, row3);
display.setTextColor(myMAGENTA);
display.print(timezone);
display.setCursor(2, row4);
display.setTextColor(myLTBLUE);
display.print(F("V"));
display.print(VERSION);
display.setCursor(32, row4);
display.setTextColor(myBLUE);
OUT.printf_P(PSTR("setup: %s, %s, %s, %s \r\n"),
location.c_str(), countryCode.c_str(), timezone.c_str(), milTime ? "true" : "false");
#ifdef SYSLOG
syslog.logf("setup: %s|%s|%s", location.c_str(), timezone.c_str(), milTime ? "true" : "false");
#endif
setNTP(timezone); // configure NTP from timezone name for location
delay(1000);
startWebServer();
displayDraw(brightness); // initial time display before fetching weather and starting loop
getWeather();
} // setup
void loop() {
#if defined(ESP8266)
MDNS.update(); // ESP32 does this automatically
#endif
ArduinoOTA.handle(); // check for OTA updates
server.handleClient(); // handle WebServer requests
struct tm * timeinfo;
time_t now = time(nullptr); // get current time
timeinfo = localtime(&now);
if (now != pNow) { // skip ahead if still same time
if (now > TWOAM) setNTP(timezone); // recheck timezone every day at 2am
int ss = timeinfo->tm_sec;
int mm = timeinfo->tm_min;
int hh = timeinfo->tm_hour;
if ((!milTime) && (hh > 12)) hh -= 12;
if (ss != pSS) { // only update seconds if changed
int s0 = ss % 10;
int s1 = ss / 10;
if (s0 != digit0.Value()) digit0.Morph(s0);
if (s1 != digit1.Value()) digit1.Morph(s1);
pSS = ss;
#ifdef LIGHT
getLight();
#endif
}
if (mm != pMM) { // update minutes, if changed
int m0 = mm % 10;
int m1 = mm / 10;
if (m0 != digit2.Value()) digit2.Morph(m0);
if (m1 != digit3.Value()) digit3.Morph(m1);
pMM = mm;
OUT.printf_P(PSTR("%02d:%02d %d %d \r"), hh, mm, light, ESP.getFreeHeap()); // output debug once per minute
}
if (hh != pHH) { // update hours, if changed
int h0 = hh % 10;
int h1 = hh / 10;
if (h0 != digit4.Value()) digit4.Morph(h0);
if (h1 != digit5.Value()) digit5.Morph(h1);
pHH = hh;
}
#ifdef DS18
sensors.requestTemperatures();
int t;
if (celsius) t = (int)round(sensors.getTempC(0));
else t = (int)round(sensors.getTempF(0));
if (t < -66 | t > 150) t = 0;
if (Temp != t) {
Temp = t;
display.setCursor(0, row1);
display.printf_P(PSTR("% 2d"), Temp);
}
#endif
pNow = now;
if (now > wDelay) getWeather(); // fetch weather again if enough time has passed
}
} // loop
void displayDraw(uint8_t b) { // clear display and draw all digits of current time
display.clearDisplay();
display.setBrightness(b);
dim = b;
time_t now = time(nullptr);
int ss = now % 60;
int mm = (now / 60) % 60;
int hh = (now / (60 * 60)) % 24;
if ((!milTime) && (hh > 12)) hh -= 12;
OUT.printf_P(PSTR("%02d:%02d\r"), hh, mm);
digit1.DrawColon(myColor);
digit3.DrawColon(myColor);
digit0.Draw(ss % 10, myColor);
digit1.Draw(ss / 10, myColor);
digit2.Draw(mm % 10, myColor);
digit3.Draw(mm / 10, myColor);
digit4.Draw(hh % 10, myColor);
digit5.Draw(hh / 10, myColor);
pNow = now;
}
#ifdef LIGHT
void getLight() { // if LDR present, auto-dim display below threshold
int lt = analogRead(A0);
if (lt > 20) { // ignore LDR if value invalid
light = (light * 3 + lt) >> 2; // average sensor into light slowly
if (light >= threshold) dim = brightness; // light above threshold, full brightness
else if (light < (threshold >> 3)) dim = brightness >> 4; // light below 1/8 threshold, brightness 1/16
else if (light < (threshold >> 2)) dim = brightness >> 3; // light below 1/4 threshold, brightness 1/8
else if (light < (threshold >> 1)) dim = brightness >> 2; // light below 1/2 threshold, brightness 1/4
else if (light < threshold) dim = brightness >> 1; // light below threshold, brightness 1/2
display.setBrightness(dim);
}
}
#endif