1 #include <Adafruit_LEDBackpack.h>
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3 #include <Adafruit_GFX.h>
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4 #include <Adafruit_SPITFT.h>
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5 #include <Adafruit_SPITFT_Macros.h>
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8 /***************************************************
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9 This is a library for our I2C LED Backpacks
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11 Designed specifically to work with the Adafruit LED 7-Segment backpacks
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12 ----> http://www.adafruit.com/products/881
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13 ----> http://www.adafruit.com/products/880
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14 ----> http://www.adafruit.com/products/879
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15 ----> http://www.adafruit.com/products/878
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17 These displays use I2C to communicate, 2 pins are required to
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18 interface. There are multiple selectable I2C addresses. For backpacks
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19 with 2 Address Select pins: 0x70, 0x71, 0x72 or 0x73. For backpacks
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20 with 3 Address Select pins: 0x70 thru 0x77
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22 Adafruit invests time and resources providing this open source code,
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23 please support Adafruit and open-source hardware by purchasing
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24 products from Adafruit!
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26 Written by Limor Fried/Ladyada for Adafruit Industries.
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27 BSD license, all text above must be included in any redistribution
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28 ****************************************************/
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30 //#include <Wire.h> // Enable this line if using Arduino Uno, Mega, etc.
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31 #include <Adafruit_GFX.h>
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32 #include "Adafruit_LEDBackpack.h"
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34 Adafruit_7segment matrix = Adafruit_7segment();
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37 #ifndef __AVR_ATtiny85__
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39 Serial.println("7 Segment Backpack Test");
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45 // try to print a number thats too long
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46 matrix.print(10000, DEC);
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47 matrix.writeDisplay();
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50 // print a hex number
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51 matrix.print(0xBEEF, HEX);
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52 matrix.writeDisplay();
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55 // print a floating point
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56 matrix.print(12.34);
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57 matrix.writeDisplay();
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60 // print with print/println
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61 for (uint16_t counter = 0; counter < 9999; counter++) {
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62 matrix.println(counter);
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63 matrix.writeDisplay();
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67 // method #2 - draw each digit
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68 uint16_t blinkcounter = 0;
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69 boolean drawDots = false;
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70 for (uint16_t counter = 0; counter < 9999; counter ++) {
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71 matrix.writeDigitNum(0, (counter / 1000), drawDots);
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72 matrix.writeDigitNum(1, (counter / 100) % 10, drawDots);
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73 matrix.drawColon(drawDots);
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74 matrix.writeDigitNum(3, (counter / 10) % 10, drawDots);
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75 matrix.writeDigitNum(4, counter % 10, drawDots);
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78 if (blinkcounter < 500) {
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80 } else if (blinkcounter < 1000) {
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85 matrix.writeDisplay();
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