Add information on (mostly reversed) protocol
Also fixes the basic functionality of sending a text to the sign with the default parameters.
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55cc608454
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316
src/util.h
316
src/util.h
@ -1,18 +1,310 @@
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#pragma once
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enum Brightness {
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Normal,
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Bright,
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// TODO: reverse engineer builtin and custom bitmaps
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// seems like our sign listens to messages on this address
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// it is also the software's default value
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static constexpr auto SIGN_ADDRESS = 128;
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enum class FontType {
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Font5x6Short = 'q',
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Font5x11ShortAndWide = 'r',
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Font7x6Default = 's',
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Font7x11Wide = 't',
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Font7x9 = 'u',
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Font7x17ExtraWide = 'v',
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FontSmallFont = 'w',
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};
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void sendTextToSign(String text, Brightness brightness = Bright) {
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// debugging
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Serial.print("Sending text \"");
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Serial.print(text);
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Serial.println("\"");
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enum class Brightness {
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Normal = 'a',
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Bright = 'b',
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};
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// TODO: find out how the brightness attribute in the LED sign is encoded in the UART signal
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Serial1.print("f01A\\s");
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Serial1.print(text);
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Serial1.print("\r\r\r");
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enum class Method {
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Cyclic = 'A',
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Immediate = 'B',
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OpenFromRight = 'C',
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OpenFromLeft = 'D',
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OpenFromCenter = 'E',
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OpenToCenter = 'F',
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CoverFromCenter = 'G',
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CoverFromRight = 'H',
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CoverFromLeft = 'I',
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CoverToCenter = 'J',
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ScrollUp = 'K',
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ScrollDown = 'L',
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InterlaceToCenter = 'M',
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InterlaceCover = 'N',
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CoverUp = 'O',
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CoverDown = 'P',
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ScanLine = 'Q',
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Explode = 'R',
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PacMan = 'S',
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FallAndStack = 'T',
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Shoot = 'U',
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Flash = 'V',
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Random = 'W',
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SlideIn = 'X',
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};
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// macros are literal characters prefixed by ^
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enum class Macros {
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CurrentTime12hWithoutAmPm = 'D',
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CurrentTime12hWithAmPm = 'E',
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CurrentTime24h = 'F',
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CurrentDateMmDdYyyy = 'A',
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CurrentDateYyyy_Mm_Dd = 'B',
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CurrentDateMm_Dd_Yyyy = 'C',
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CurrentDateDd_Mm_Yyyy = 'a',
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Beep1 = 'q',
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Beep2 = 'r',
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Beep3 = 's',
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};
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// symbols should be inserted as string representations of their numeric value prefixed by ^
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enum class Symbols {
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Sun = 66,
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CloudOrWind = 67,
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UmbrellaRaining = 68,
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WallClock = 69,
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Telephone = 70,
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Glasses = 71,
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Faucet = 72,
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RocketOrSyringeOrSo = 73,
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WhatTheHell = 74,
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Key = 75,
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Shirt = 76,
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Helicopter = 77,
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Car = 78,
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Tank = 79,
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House = 80,
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Teapot = 81,
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Trees = 82,
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Duck = 83,
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Scooter = 84,
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Bicycle = 85,
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Crown = 86,
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AppleOrSo = 87,
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ArrowRight = 88,
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ArrowLeft = 89,
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ArrowDownLeft = 90,
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ArrowUpLeft = 91,
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Cup = 92,
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Chair = 93,
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HighHeel = 94,
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PrizeCup = 95,
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};
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// cartoons are represented as these characters prefixed by ^
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enum class Cartoon {
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MerryXMas = 'i',
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HappyNewYear = 'j',
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FourthOfJuly = 'k',
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HappyEaster = 'l',
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HappyHalloween = 'm',
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DontDrinkAndDrive = 'n',
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NoSmoking = 'o',
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Welcome = 'p',
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};
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// the descriptions originate from the UTF-16 specification, https://www.ssec.wisc.edu/~tomw/java/unicode.html
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// the extended charset starts where ASCII ends
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enum class ExtendedChar {
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// Ç
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LatinCapitalLetterCWithCedilla = 0x80,
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// ü
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LatinSmallLetterUWithDiaeresis = 0x81,
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// é
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LatinSmallLetterEWithAcute = 0x82,
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// â
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LatinSmallLetterAWithCircumflex = 0x83,
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// ä
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LatinSmallLetterAWithDiaeresis = 0x84,
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// á
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LatinSmallLetterAWithGrave = 0x85,
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// å
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LatinSmallLetterAWithRingAbove = 0x86,
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// ç
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LatinSmallLetterCWithCedilla = 0x87,
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// ê
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LatinSmallLetterEWithCircumflex = 0x88,
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// ë
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LatinSmallLetterEWithDiaeresis = 0x89,
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// è
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LatinSmallLetterEWithGrave = 0x8a,
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// Ï
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LatinCapitalLetterIWithDiaeresis = 0x8b,
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// Î
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LatinCapitalLetterIWithCircumflex = 0x8c,
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// Ì
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LatinCapitalLetterIWithGrave = 0x8d,
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// Ä
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LatinCapitalLetterAWithDiaeresis = 0x8f,
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// Å
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LatinCapitalLetterAWithRingAbove = 0x8f,
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// É
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LatinCapitalLetterEWithAcute = 0x90,
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// æ
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LatinSmallLetterAe = 0x91,
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// Æ
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LatinCapitalLetterAe = 0x92,
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// ô
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LatinSmallLetterOWithCircumflex = 0x93,
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// ö
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LatinSmallLetterOWithDiaeresis = 0x94,
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// ò
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LatinSmallLetterOWithGrave = 0x95,
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// û
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LatinSmallLetterUWithCircumflex = 0x96,
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// ù
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LatinSmallLetterUWithGrave = 0x97,
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// ÿ
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LatinSmallLetterYWithDiaeresis = 0x98,
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// Ö
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LatinCapitalLLetterOWithDiaeresis = 0x99,
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// Ü
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LatinCapitalLetterUWithDiaeresis = 0x9a,
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// ¢
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CentSign = 0x9b,
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// £
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PoundSign = 0x9c,
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// ¥
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YenSign = 0x9d,
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// urm...
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UnknownPCurrencySign = 0x9e,
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// ƒ
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LatinSmallLetterFWithHook = 0x9f,
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// á
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LatinSmallLetterAWithAcute = 0xa0,
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// Í
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LatinCapitalLetterIWithAcute = 0xa1,
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// Ó
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LatinCapitalLetterOWithAcute = 0xa2,
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// ú
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LatinSmallLetterUWithAcute = 0xa3,
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// ñ
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LatinSmallLetterNWithTilde = 0xa4,
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// Ñ
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LatinCapitalLetterNWithTilde = 0xa5,
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// a̱
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LatinSmallLetterAWithMacronBelow = 0xa6,
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// couldn't find that one in the UTF-16 table
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LatinSmallLetterOWithMacronBelow = 0xa7,
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// ¿
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InvertedQuestionMark = 0xa8,
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// you can probably imagine what it'll look like
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LatinCapitalLetterZWithRingAbove = 0xa9,
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// Ź
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LatinCapitalLetterZWithAcute = 0xaa,
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// ń
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LatinSmallLetterNWithAcute = 0xab,
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// some weird L with a diagonal line
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AnotherWeirdSign = 0xac,
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// Ś or ś, can't tell for sure, let's assume capital
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LatinCapitalLetterSWithAcute = 0xab,
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// Ć
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LatinCapitalLetterCWithAcute = 0xac,
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// ȩ
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LatinSmallLetterEWithCedilla = 0xad,
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// well, you can imagine what it'll look like
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LatinSmallLetterAWithCedilla = 0xb0,
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// €
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EuroSign = 0xb1,
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// E with some vertical line below
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LatinCapitalLetterEWithSomeLineBelow = 0xb3,
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// a with some vertical line below
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LatinSmallLetterAWithSomeWeirdLineBelow = 0xb4,
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// α
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GreekSmallLetterAlpha = 0xe0,
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// β
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GreekSmallLetterBeta = 0xe1,
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// Γ
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GreekCapitalLetterGamma = 0xe2,
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// π
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GreekSmallLetterPi = 0xe3,
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// Σ
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GreekCapitalLetterSigma = 0xe4,
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// σ
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GreekSmallLetterSigma = 0xe5,
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// μ
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GreekSmallLetterMu = 0xe6,
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// τ
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GreekSmallLetterTau = 0xe7,
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// Φ
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GreekCapitalLetterPhi = 0xe8,
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// θ
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GreekSmallLetterTheta = 0xe9,
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// Ω
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GreekCapitalLetterOmega = 0xea,
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// δ
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GreekSmallLetterDelta = 0xeb,
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// ∞
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Infinity = 0xec,
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// φ
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GreekSmallLetterPhi = 0xed,
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};
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/*
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* Message syntax:
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* separator: ~
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* address (int string): 128
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* separator: ~
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* random string(?): f01
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* method (single char)
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* format string (see below)
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* end of message: \r\r\r
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*
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* the format string contains the message along with control characters that define some of the formatting
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* note: we have not tested the UTF-8 capabilities, so far only ASCII
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* it supports multiple lines (yet to be tested)
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* you can also insert macros (e.g., current time/date), symbols (e.g., a sun) and cartoons
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* the specials are preceded by a caret following the respective character
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* then, there is an extended charset that supports a small subset of UTF-16 (yes, that's right, it's not just UTF-8)
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* it can further contain information that should be used from their occurrence on
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* the formatting escape sequences are prefixed by a literal backspace following a char that represents the format
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* brightness is \<ab>, speed is Y<1-8>, "stay time" is \Z<1-8>, font type is \[A-X]
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* new lines are introduced by a single \r, the end of the message is marked by three of them
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*
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* default formatting:
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* - method: cyclic
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* - font type: 7x6
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* - speed: 5
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* - stay time: 4
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* - brightness: bright
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*/
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void sendTextToSign(
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const String &text,
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const Method method = Method::Cyclic,
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const FontType fontType = FontType::Font7x6Default,
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const int speed = 5,
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const int stayTime = 4,
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const Brightness brightness = Brightness::Bright
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) {
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if (speed < 0 || speed > 8) {
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Serial.println("Invalid speed: " + String(speed, DEC));
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return;
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}
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if (stayTime < 0 || stayTime > 8) {
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Serial.println("Invalid stayTime: " + String(stayTime, DEC));
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return;
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}
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Serial.println("Sending text: \"" + text + "\"");
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String toSend = "~" + String(SIGN_ADDRESS, DEC) + "~f01" + (char) method + "\\" + (char) brightness + "\\Y" + String(speed, DEC) + "\\Z" + String(stayTime, DEC) + "\\" + (char) fontType + text + "\r\r\r";
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Serial1.print(toSend);
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Serial.println("Text sent to device: " + toSend);
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Serial.print("Hex dump: ");
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for (size_t i = 0; i < toSend.length(); ++i) {
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auto hexChar = String(toSend[i], HEX);
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if (hexChar.length() == 1) {
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hexChar = '0' + hexChar;
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}
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Serial.print(hexChar + ' ');
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}
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Serial.println();
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}
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