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PainterlyUNO/Arduino/LED_Matrix/LED_Matrix.ino

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#include "Arduino.h"
#include "FastLED.h"
#define LED_TYPE WS2812B
#define DATA_PIN 6
#define MATRIX_MAX_WIDTH 20
#define MATRIX_MAX_HEIGHT 20
#define MATRIX_LED_MAX_COUNT (MATRIX_MAX_WIDTH * MATRIX_MAX_HEIGHT)
#define STD_WIDTH 16
#define STD_HEIGHT 16
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#define STD_LED_MAX_COUNT (STD_WIDTH * STD_HEIGHT)
//#define DEBUG_PRINT_CALLBACK
#define WAIT while(!Serial.available());
uint8_t opcode = 99;
uint8_t width = STD_WIDTH;
uint8_t height = STD_HEIGHT;
uint32_t ledCount;
uint8_t gamma8(uint8_t x) {
uint32_t x2 = (uint32_t) x;
x2 = x2 * x2 * 258 >> 16;
return (uint8_t) x2;
}
CRGB leds[MATRIX_LED_MAX_COUNT];
typedef void (*FNPTR_t)();
uint8_t getByte() {
WAIT
return Serial.read();
}
uint16_t getWord() {
uint16_t highByte = getByte();
uint16_t lowByte = getByte();
return highByte << 8 | lowByte;
}
void scale() {
#ifdef DEBUG_PRINT_CALLBACK
Serial.println("scale called");
#endif
width = getByte();
height = getByte();
#ifdef DEBUG_PRINT_CALLBACK
Serial.print("Width: ");
Serial.println(width);
Serial.print("Height: ");
Serial.println(height);
#endif
uint16_t newLedCount = width * height;
if (newLedCount <= MATRIX_LED_MAX_COUNT) {
ledCount = newLedCount;
} else {
return;
}
#ifdef DEBUG_PRINT_CALLBACK
Serial.print("LEDs: ");
Serial.println(ledCount);
#endif
FastLED.addLeds<LED_TYPE, DATA_PIN>(leds, ledCount);
for (uint16_t x = 0; x < ledCount; x++) {
leds[x].r = 0;
leds[x].g = 0;
leds[x].b = 0;
}
FastLED.show();
}
void single() {
#ifdef DEBUG_PRINT_CALLBACK
Serial.println("Single called");
#endif
uint16_t index = getWord();
uint8_t green = gamma8(getByte());
uint8_t red = gamma8(getByte());
uint8_t blue = gamma8(getByte());
#ifdef DEBUG_PRINT_CALLBACK
Serial.print("Index: ");
Serial.println(index);
Serial.print("Red: ");
Serial.println(red);
Serial.print("Green: ");
Serial.println(green);
Serial.print("Blue: ");
Serial.println(blue);
#endif
leds[index] = CRGB(red, green, blue);
FastLED.show();
}
void image() {
Serial.readBytes((char*) leds, ledCount * 3);
for (uint16_t x = 0; x < ledCount; x++) {
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leds[x].r = gamma8(leds[x].r);
leds[x].g = gamma8(leds[x].g);
leds[x].b = gamma8(leds[x].b);
}
FastLED.show();
}
void fill() {
#ifdef DEBUG_PRINT_CALLBACK
Serial.println("Called fill");
#endif
uint8_t green = gamma8(getByte());
uint8_t red = gamma8(getByte());
uint8_t blue = gamma8(getByte());
#ifdef DEBUG_PRINT_CALLBACK
Serial.print("Red: ");
Serial.println(red);
Serial.print("Green: ");
Serial.println(green);
Serial.print("Blue: ");
Serial.println(blue);
#endif
for (uint16_t x = 0; x < ledCount; x++) {
leds[x].r = red;
leds[x].g = green;
leds[x].b = blue;
}
FastLED.show();
}
void config() {
Serial.write(width);
Serial.write(height);
for (uint32_t i = 0; i < ledCount; i++){
Serial.write((uint8_t) leds[i].r);
Serial.write((uint8_t) leds[i].g);
Serial.write((uint8_t) leds[i].b);
}
}
FNPTR_t opcodeTable[] = {
scale, // opcode 0x00
single, // opcode 0x01
image, // opcode 0x02
fill, // opcode 0x03
config // opcode 0x04
};
void setup() {
ledCount = STD_LED_MAX_COUNT;
Serial.begin(9600);
FastLED.addLeds<LED_TYPE, DATA_PIN>(leds, ledCount);
for (uint16_t i = 0; i < ledCount; i++) {
leds[i].r = 0;
leds[i].g = 0;
leds[i].b = 0;
}
FastLED.show();
}
void loop() {
if (Serial.available()) {
#ifdef DEBUG_PRINT_CALLBACK
Serial.println("Opcode read in");
#endif
opcode = getByte();
#ifdef DEBUG_PRINT_CALLBACK
Serial.print("Opcode changed to:");
Serial.println(opcode);
#endif
if (opcode <= 4) {
opcodeTable[opcode]();
Serial.write(21);
}
}
}