Added applied robotics code to archive.

OSU Coursework/ROB 421 - Applied Robotics/software/firmware/led_controller/led_controller.ino

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+#include "FastLED.h"
+#include <ArduinoJson.h>
+
+////////// Pinout Variables //////////
+const int led_power_status_pin = 8;
+const int led_general_status_pin = 9;
+const int power_on_status_pin = 7;
+const int led_pwm_pin = 6;
+
+////////// Global Variables //////////
+const int num_power_status_leds = 69;
+CRGB power_status_leds[num_power_status_leds];
+
+const int num_general_status_leds = 18;
+CRGB general_status_leds[num_general_status_leds];
+
+char read_buffer[1500];
+
+bool power_on = false;
+bool was_on = false;
+
+
+void setup() {
+  Serial.begin(57600);
+
+  FastLED.addLeds<WS2812, led_power_status_pin, GRB>(power_status_leds, num_power_status_leds).setCorrection(TypicalLEDStrip);
+  FastLED.addLeds<WS2812, led_general_status_pin, GRB>(general_status_leds, num_general_status_leds).setCorrection(TypicalLEDStrip);
+
+  FastLED.setBrightness(40);
+
+  pinMode(power_on_status_pin, INPUT);
+  pinMode(led_pwm_pin, OUTPUT);
+
+  analogWriteFrequency(led_pwm_pin, 38000);
+  analogWrite(led_pwm_pin, 128);
+}
+
+void loop() {
+  if (Serial.available() > 0) {
+    Serial.readBytesUntil('\n', read_buffer, 1500);
+  }
+
+  StaticJsonBuffer<1500> jsonBuffer;
+  JsonObject& root = jsonBuffer.parseObject(read_buffer);
+
+  if (root.success()) {
+    Serial.println("worked!");
+    JsonArray& leds = root["leds"];
+
+    int led_count = 0;
+    for (unsigned int i = 0 ; i < min(num_general_status_leds * 3, leds.size()) ; i += 3) {
+      general_status_leds[led_count].red = leds[i];
+      general_status_leds[led_count].green = leds[i + 1];
+      general_status_leds[led_count].blue = leds[i + 2];
+      led_count++;
+    }
+  }
+
+  EVERY_N_MILLISECONDS(250) {
+    if (digitalRead(power_on_status_pin)) {
+      if (was_on) {
+        fill_solid(power_status_leds, num_power_status_leds, CRGB::Black);
+        was_on = 0;
+      } else {
+        fill_solid(power_status_leds, num_power_status_leds, CRGB::Red);
+        was_on = 1;
+      }
+    } else {
+      fill_solid(power_status_leds, num_power_status_leds, CRGB::Green);
+    }
+  }
+
+  FastLED.show();
+}