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arduino-cli/libraries/SevenSegmentTM1637/examples/ExtClock/ExtClock.ino

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+/*
+	Clock example example (Extended class example)
+
+  Display a clock on the display. For this demo you can add a speed multiplier to make the clock run faster. For a real clock you want to use a delay of 1 min or even use a Real Time Clock module (RTC)
+
+	The circuit:
+  * connect TM1637 pin CLK to Arduino pin D4
+  * connect TM1637 pin DIO to Arduino pin D5
+  * connect TM1637 pin Vcc to Arduino pin 5V
+  * connect TM1637 pin GND to Arduino pin GND
+
+	Created 25 September 2015
+	By Bram Harmsen
+
+	https://github.com/bremme/arduino-tm1637
+
+*/
+// include the SevenSegmentTM1637 library
+#include "SevenSegmentTM1637.h"
+#include "SevenSegmentExtended.h"
+
+/* initialize global TM1637 Display object
+*  The constructor takes two arguments, the number of the clock pin and the digital output pin:
+* SevenSegmentTM1637(byte pinCLK, byte pinDIO);
+*/
+const byte PIN_CLK = 4;   // define CLK pin (any digital pin)
+const byte PIN_DIO = 5;   // define DIO pin (any digital pin)
+SevenSegmentExtended      display(PIN_CLK, PIN_DIO);
+
+const unsigned int clockSpeed = 10000;    // speed up clock for demo
+
+// run setup code
+void setup() {
+  Serial.begin(9600);         // initializes the Serial connection @ 9600 baud
+  display.begin();            // initializes the display
+  display.setBacklight(100);  // set the brightness to 100 %
+  delay(1000);                // wait 1000 ms
+};
+
+// run loop (forever)
+void loop() {
+
+  byte hours    = 14;                           // initialize hours
+  byte minutes  = 39;                           // initialize minutes
+
+  for ( ; hours < 24; hours++) {                // count hours   up to 24
+    for ( ; minutes < 60; minutes++) {          // count minutes up to 59
+      display.printTime(hours, minutes, true);  // display time
+      delay(60000 / clockSpeed);                // clock delay ms
+    };
+    minutes = 0;                                // reset minutes
+  };
+};