From 4b39d81bcebf81721c7c79ee7cdc7e5d4c3e0c3d Mon Sep 17 00:00:00 2001 From: Imants Pulkstenis Date: Tue, 19 May 2020 20:49:43 +0300 Subject: [PATCH] Add Arduino code --- ArduinoCode/matrix/matrix.ino | 220 ++++++++++++++++++++++++++++++++++ 1 file changed, 220 insertions(+) create mode 100644 ArduinoCode/matrix/matrix.ino diff --git a/ArduinoCode/matrix/matrix.ino b/ArduinoCode/matrix/matrix.ino new file mode 100644 index 0000000..a0f549b --- /dev/null +++ b/ArduinoCode/matrix/matrix.ino @@ -0,0 +1,220 @@ +#include + +#define LED_PIN 10 + +#define COLOR_ORDER GRB +#define CHIPSET WS2812B + +#define BRIGHTNESS 5 + +// Helper functions for an two-dimensional XY matrix of pixels. +// Simple 2-D demo code is included as well. +// +// XY(x,y) takes x and y coordinates and returns an LED index number, +// for use like this: leds[ XY(x,y) ] == CRGB::Red; +// No error checking is performed on the ranges of x and y. +// +// XYsafe(x,y) takes x and y coordinates and returns an LED index number, +// for use like this: leds[ XY(x,y) ] == CRGB::Red; +// Error checking IS performed on the ranges of x and y, and an +// index of "-1" is returned. Special instructions below +// explain how to use this without having to do your own error +// checking every time you use this function. +// This is a slightly more advanced technique, and +// it REQUIRES SPECIAL ADDITIONAL setup, described below. + + +// Params for width and height +const uint8_t kMatrixWidth = 8; +const uint8_t kMatrixHeight = 8; + +// Param for different pixel layouts +const bool kMatrixSerpentineLayout = true; +// Set 'kMatrixSerpentineLayout' to false if your pixels are +// laid out all running the same way, like this: +// +// 0 > 1 > 2 > 3 > 4 +// | +// .----<----<----<----' +// | +// 5 > 6 > 7 > 8 > 9 +// | +// .----<----<----<----' +// | +// 10 > 11 > 12 > 13 > 14 +// | +// .----<----<----<----' +// | +// 15 > 16 > 17 > 18 > 19 +// +// Set 'kMatrixSerpentineLayout' to true if your pixels are +// laid out back-and-forth, like this: +// +// 0 > 1 > 2 > 3 > 4 +// | +// | +// 9 < 8 < 7 < 6 < 5 +// | +// | +// 10 > 11 > 12 > 13 > 14 +// | +// | +// 19 < 18 < 17 < 16 < 15 +// +// Bonus vocabulary word: anything that goes one way +// in one row, and then backwards in the next row, and so on +// is call "boustrophedon", meaning "as the ox plows." + + +// This function will return the right 'led index number' for +// a given set of X and Y coordinates on your matrix. +// IT DOES NOT CHECK THE COORDINATE BOUNDARIES. +// That's up to you. Don't pass it bogus values. +// +// Use the "XY" function like this: +// +// for( uint8_t x = 0; x < kMatrixWidth; x++) { +// for( uint8_t y = 0; y < kMatrixHeight; y++) { +// +// // Here's the x, y to 'led index' in action: +// leds[ XY( x, y) ] = CHSV( random8(), 255, 255); +// +// } +// } +// +// +uint16_t XY( uint8_t x, uint8_t y) +{ + uint16_t i; + + if( kMatrixSerpentineLayout == false) { + i = (y * kMatrixWidth) + x; + } + + if( kMatrixSerpentineLayout == true) { + if( y & 0x01) { + // Odd rows run backwards + uint8_t reverseX = (kMatrixWidth - 1) - x; + i = (y * kMatrixWidth) + reverseX; + } else { + // Even rows run forwards + i = (y * kMatrixWidth) + x; + } + } + + return i; +} + + +// Once you've gotten the basics working (AND NOT UNTIL THEN!) +// here's a helpful technique that can be tricky to set up, but +// then helps you avoid the needs for sprinkling array-bound-checking +// throughout your code. +// +// It requires a careful attention to get it set up correctly, but +// can potentially make your code smaller and faster. +// +// Suppose you have an 8 x 5 matrix of 40 LEDs. Normally, you'd +// delcare your leds array like this: +// CRGB leds[40]; +// But instead of that, declare an LED buffer with one extra pixel in +// it, "leds_plus_safety_pixel". Then declare "leds" as a pointer to +// that array, but starting with the 2nd element (id=1) of that array: +// CRGB leds_with_safety_pixel[41]; +// CRGB* const leds( leds_plus_safety_pixel + 1); +// Then you use the "leds" array as you normally would. +// Now "leds[0..N]" are aliases for "leds_plus_safety_pixel[1..(N+1)]", +// AND leds[-1] is now a legitimate and safe alias for leds_plus_safety_pixel[0]. +// leds_plus_safety_pixel[0] aka leds[-1] is now your "safety pixel". +// +// Now instead of using the XY function above, use the one below, "XYsafe". +// +// If the X and Y values are 'in bounds', this function will return an index +// into the visible led array, same as "XY" does. +// HOWEVER -- and this is the trick -- if the X or Y values +// are out of bounds, this function will return an index of -1. +// And since leds[-1] is actually just an alias for leds_plus_safety_pixel[0], +// it's a totally safe and legal place to access. And since the 'safety pixel' +// falls 'outside' the visible part of the LED array, anything you write +// there is hidden from view automatically. +// Thus, this line of code is totally safe, regardless of the actual size of +// your matrix: +// leds[ XYsafe( random8(), random8() ) ] = CHSV( random8(), 255, 255); +// +// The only catch here is that while this makes it safe to read from and +// write to 'any pixel', there's really only ONE 'safety pixel'. No matter +// what out-of-bounds coordinates you write to, you'll really be writing to +// that one safety pixel. And if you try to READ from the safety pixel, +// you'll read whatever was written there last, reglardless of what coordinates +// were supplied. + +#define NUM_LEDS (kMatrixWidth * kMatrixHeight) +CRGB leds_plus_safety_pixel[ NUM_LEDS + 1]; +CRGB* const leds( leds_plus_safety_pixel + 1); + +uint16_t XYsafe( uint8_t x, uint8_t y) +{ + if( x >= kMatrixWidth) return -1; + if( y >= kMatrixHeight) return -1; + return XY(x,y); +} + + +// Demo that USES "XY" follows code below + +String inputString = ""; // a String to hold incoming data +bool stringComplete = false; // whether the string is complete + + +void loop() +{ + //leds[ XY(5, 4)] = CRGB( 0, 0, 255); + FastLED.show(); + + if (stringComplete) { + + int bPosition = inputString.indexOf('b'); + int cPosition = inputString.indexOf('c'); + if (bPosition == 0 ){ + byte place = inputString.substring(1, 3).toInt(); + byte red = inputString.substring(3, 6).toInt(); + byte blue = inputString.substring(6, 9).toInt(); + byte green = inputString.substring(9, 12).toInt(); + //Serial.println(place); + Serial.print(inputString); + if (place < kMatrixWidth*kMatrixHeight ){ + leds[place] = CRGB( red, blue, green); + } + } else if (cPosition == 0 ) { + fill_solid( leds, NUM_LEDS, CRGB(0,0,0)); + Serial.print("Clear!\n"); + } + //delay(500); + + stringComplete = false; + inputString = ""; + } +} + + +void setup() { + Serial.begin(9600); + + + FastLED.addLeds(leds, NUM_LEDS).setCorrection(TypicalSMD5050); + FastLED.setBrightness( BRIGHTNESS ); +} + +void serialEvent() { + while (Serial.available()) { + // get the new byte: + char inChar = (char)Serial.read(); + // add it to the inputString: + inputString += inChar; + // if the incoming character is a newline, set a flag so the main loop can + // do something about it: + if (inChar == '\n') { + stringComplete = true; + } + } +}