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70 lines
2.8 KiB
70 lines
2.8 KiB
3 years ago
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/*
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testWholeDisplay.ino
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-test each segment in the display
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-a simple example using Dean Reading's SevSeg library to light up all 4 digits plus the 4 decimal points on a 4 digit display
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-the purpose of this example is to ensure you have the wires all hooked up right for every segment and digit, and to troubleshoot the display and wiring
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to ensure *every* segment and period lights up
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By Gabriel Staples
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Website: http://www.ElectricRCAircraftGuy.com
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My contact info is available by clicking the "Contact Me" tab at the top of my website.
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Written: 1 Oct. 2015
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Last Updated: 1 Oct. 2015
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*/
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/*
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LICENSING:
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-this *example file* only is modified from Dean Reading's original example, and is in the public domain.
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Dean Reading's SevSeg library is as follows:
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Copyright 2014 Dean Reading
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include <SevSeg.h>
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SevSeg sevseg; //Instantiate a seven segment controller object
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void setup()
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{
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byte numDigits = 4;
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byte digitPins[] = {2, 3, 4, 5}; //Digits: 1,2,3,4 <--put one resistor (ex: 220 Ohms, or 330 Ohms, etc, on each digit pin)
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byte segmentPins[] = {6, 7, 8, 9, 10, 11, 12, 13}; //Segments: A,B,C,D,E,F,G,Period
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sevseg.begin(COMMON_ANODE, numDigits, digitPins, segmentPins);
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sevseg.setBrightness(10); //Note: 100 brightness simply corresponds to a delay of 2000us after lighting each segment. A brightness of 0
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//is a delay of 1us; it doesn't really affect brightness as much as it affects update rate (frequency).
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//Therefore, for a 4-digit 7-segment + pd, COMMON_ANODE display, the max update rate for a "brightness" of 100 is 1/(2000us*8) = 62.5Hz.
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//I am choosing a "brightness" of 10 because it increases the max update rate to approx. 1/(200us*8) = 625Hz.
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//This is preferable, as it decreases aliasing when recording the display with a video camera....I think.
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}
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void loop()
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{
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//local vars
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static byte decPlace = 0;
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sevseg.setNumber(8888,decPlace);
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decPlace++;
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decPlace %= 4; //rollover back to 0 once variable gets to 4; To anyone wondering: the % is called the "modulo" operator; see here for explanation & example: https://www.arduino.cc/en/Reference/Modulo
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sevseg.refreshDisplay(); // Must run repeatedly; don't use blocking code (ex: delay()) in the loop() function or this won't work right
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}
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