commit 55298a05bf3a4ecf0dc0168c72f4cdceeeb232ed
Author: skybldev <skybluehexapon@outlook.com>
Date:   Tue Jan 11 18:20:52 2022 -0500

    initial commit

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..1c16697
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+Control an LED strip with an Arduino through a serial connection.
diff --git a/algo.js b/algo.js
new file mode 100755
index 0000000..df5af29
--- /dev/null
+++ b/algo.js
@@ -0,0 +1,40 @@
+const tps = 47;
+const fade_ms = 500; // ms
+
+const current_vals = [10, 100, 45];
+const target_vals = [255, 255, 0];
+var fade_increments = [0, 0, 0];
+
+var fade_ticks = Math.ceil(fade_ms / tps); // 32
+
+var val_iterator = 0;
+var tick_iterator = 0;
+
+console.log(`fade_ticks: ${fade_ticks}`);
+
+while (val_iterator < 3) {
+
+  fade_increments[val_iterator] = -((current_vals[val_iterator] - target_vals[val_iterator]) / fade_ticks);
+  val_iterator++;
+
+}
+
+val_iterator = 0;
+
+console.log(`increments: ${fade_increments}`);
+
+while (tick_iterator < fade_ticks) {
+  
+  while (val_iterator < 3) {
+
+    current_vals[val_iterator] += fade_increments[val_iterator];
+    val_iterator++;
+
+  }
+
+  val_iterator = 0;
+  
+  console.log(current_vals.map((val) => Math.round(val)));
+
+  tick_iterator++;
+}
\ No newline at end of file
diff --git a/algonew.js b/algonew.js
new file mode 100755
index 0000000..46db7f7
--- /dev/null
+++ b/algonew.js
@@ -0,0 +1,23 @@
+const ticks_per_second = 47;
+
+const current_color = [10, 100, 45];
+
+const target_color = [255, 255, 0];
+const how_long_fade_is = 1500; // ms
+
+var how_many_ticks_it_takes = Math.floor(how_long_fade_is / ticks_per_second); // 32
+var percent_amount = 1;
+
+var tick_inc = 0;
+
+while (tick_inc < how_many_ticks_it_takes) {
+  let color_out = [];
+  for (let j = 0; j < 3; j++) {
+    color_out.push((current_color[j] * percent_amount) + (target_color[j] * (1 - percent_amount)));
+  }
+  
+  console.log(`${tick_inc}: ${color_out}`);
+
+  tick_inc++;
+  percent_amount -= (1 / how_many_ticks_it_takes);
+}
\ No newline at end of file
diff --git a/algotest.cpp b/algotest.cpp
new file mode 100755
index 0000000..7aab081
--- /dev/null
+++ b/algotest.cpp
@@ -0,0 +1,48 @@
+#define TPS 47
+#define FADE_MS 500
+
+#include <iostream>
+#include <cmath>
+
+using namespace std;
+
+float current_vals[] = {10, 100, 45};
+int target_vals[] = {255, 255, 0};
+float fade_increments[] = {0.0, 0.0, 0.0};
+
+int fade_ticks = ceil(FADE_MS / (float) TPS);
+
+int val_iterator = 0;
+int tick_iterator = 0;
+
+int main() {
+
+  cout << "fade_ticks: " << fade_ticks << endl;
+  
+  while (val_iterator < 3) {
+    fade_increments[val_iterator] = -((current_vals[val_iterator] - target_vals[val_iterator]) / (float) fade_ticks);
+    val_iterator++;
+  }
+
+  val_iterator = 0;
+
+  cout << "increments: " << fade_increments[0] << ", " << fade_increments[1] << ", " << fade_increments[2] << endl;
+
+  while (tick_iterator < fade_ticks) {
+    
+    while (val_iterator < 3) {
+
+      current_vals[val_iterator] += fade_increments[val_iterator];
+      val_iterator++;
+
+    }
+
+    val_iterator = 0;
+
+    cout << tick_iterator << ": " << round(current_vals[0]) << ", " << round(current_vals[1]) << ", " << round(current_vals[2]) << endl;
+
+    tick_iterator++;
+  }
+
+  return 0;
+}
\ No newline at end of file
diff --git a/cmdparsermini.cpp b/cmdparsermini.cpp
new file mode 100755
index 0000000..a623561
--- /dev/null
+++ b/cmdparsermini.cpp
@@ -0,0 +1,88 @@
+#include <iostream>
+
+using namespace std;
+
+void callback(char command, char arg, int parsed_number) {
+	cout << "command: " << command << " | ";
+	cout << "arg: " << arg << " | ";
+	cout << "parsed_number: " << parsed_number << " | ";
+	cout << endl;
+}
+
+int parse_string(char input[]) {
+	char current_char = input[0];
+	char command = ' ';
+	char arg = ' ';
+	char current_number_string[4] = {' ', ' ', ' ', '\0'};
+
+	int line_position = 0;
+	int total_position = 0;
+	int current_number_len = 0;
+	int parsed_number = 0;
+
+	while (current_char != '\0') {
+		if (line_position == 0) {
+			switch (current_char) {
+				case 'f':
+				case 't':
+				case 'b':
+					command = current_char;
+					break;
+
+				default:
+					cout << "invalid command. " << endl;
+					return 1;
+			}
+		} else {
+			switch (current_char) {
+				case '0' ... '9':
+					if (current_number_len < 4) {
+						current_number_len++;
+						current_number_string[current_number_len - 1] = current_char;
+					}
+					break;
+
+				case 'r':
+				case 'g':
+				case 'b':
+				case 't':
+					arg = current_char;
+					break;
+
+				case ' ':
+					if (current_number_len > 0) parsed_number = stoi(current_number_string);
+					if (arg != ' ') callback(command, arg, parsed_number);
+
+					arg = ' ';
+					current_number_len = 0;
+					fill(begin(current_number_string), end(current_number_string), ' ');
+					current_number_string[3] = '\0';
+					
+					break;
+
+				case '\n':
+					if (current_number_len > 0) parsed_number = stoi(current_number_string);
+					callback(command, arg, parsed_number);
+
+					command = arg = ' ';
+					line_position = parsed_number = current_number_len = 0;
+					fill(begin(current_number_string), end(current_number_string), ' ');
+					current_number_string[3] = '\0';
+
+					break;
+
+				default:
+					cout << "invalid syntax." << endl;
+					return 1;
+			}
+		}
+
+		if (current_char != '\n') line_position++;
+
+		total_position++;
+		current_char = input[total_position];
+	}
+
+	line_position = 0;
+	return 0;
+}
\ No newline at end of file
diff --git a/cmdparsetest.cpp b/cmdparsetest.cpp
new file mode 100755
index 0000000..ca902a4
--- /dev/null
+++ b/cmdparsetest.cpp
@@ -0,0 +1,138 @@
+#include <iostream>
+//#include <cstring>
+
+using namespace std;
+
+int parse_string(char input[]);
+void parse_string_callback(char command, char arg, int parsed_number);
+
+
+int main() {
+
+	char input1[] = "f r20 g120 b255\n";
+	char input2[] = "b\n";
+	char input3[] = "t r20\n";
+	char input4[] = "t r20\nb\nf r20 g120 b255\n";
+	char input5[] = "t'r3\n";
+
+	cout << "parsing string: " << input4 << endl;
+
+	return parse_string(input4);
+
+}
+
+void callback(char command, char arg, int parsed_number) {
+
+	cout << "command: " << command << " | ";
+	cout << "arg: " << arg << " | ";
+	cout << "parsed_number: " << parsed_number << " | ";
+	cout << endl;
+
+}
+
+int parse_string(char input[]) {
+
+	char current_char = input[0];
+	char command = ' ';
+	char arg = ' ';
+	char current_number_string[4] = {' ', ' ', ' ', '\0'};
+	
+	int line_position = 0;
+	int total_position = 0;
+	int current_number_len = 0;
+	int parsed_number = 0;
+
+	while (current_char != '\0') {
+
+		if (line_position == 0) {
+
+			switch (current_char) {
+
+				case 'f':
+				case 't':
+				case 'b':
+					command = current_char;
+					break;
+
+				default:
+					cout << "invalid command. " << endl;
+					return 1;
+
+			}
+
+		} else {
+
+			switch (current_char) {
+
+				case '0' ... '9':
+					if (current_number_len < 4) {
+
+						current_number_len++;
+						current_number_string[current_number_len - 1] = current_char;
+
+					}
+
+					break;
+
+				case 'r':
+				case 'g':
+				case 'b':
+				case 't':
+					arg = current_char;
+					break;
+
+				case ' ':
+					if (current_number_len > 0) parsed_number = stoi(current_number_string);
+					if (arg != ' ') callback(command, arg, parsed_number);
+
+					arg = ' ';
+					current_number_len = 0;
+
+					fill(begin(current_number_string), end(current_number_string), ' ');
+					current_number_string[3] = '\0';
+					
+					break;
+
+				case '\n':
+					if (current_number_len > 0) parsed_number = stoi(current_number_string);
+
+					callback(command, arg, parsed_number);
+
+					command = arg = ' ';
+					line_position = parsed_number = current_number_len = 0;
+
+					fill(begin(current_number_string), end(current_number_string), ' ');
+					current_number_string[3] = '\0';
+
+					break;
+
+				default:
+					cout << "invalid syntax." << endl;
+					return 1;
+
+			}
+
+		}
+	
+		if (current_char != '\n') {
+
+			//cout << "line_position: " << line_position << " | ";
+			//cout << "current_char: " << (current_char == '\n' ? '\\' : current_char) << " | ";
+			//cout << "parsed_number: " << parsed_number << " | ";
+			//cout << "current_number_string: " << current_number_string << " | ";
+			//cout << "command: " << command << endl;
+
+			line_position++;
+		
+		}
+
+		total_position++;
+		current_char = input[total_position];
+
+	}
+
+	line_position = 0;
+
+	return 0;
+
+}
\ No newline at end of file
diff --git a/main/README.md b/main/README.md
new file mode 100755
index 0000000..26a57df
--- /dev/null
+++ b/main/README.md
@@ -0,0 +1,29 @@
+# ledctl
+
+## Documentation
+
+Each command sent through Serial is a single character followed by arguments in g-code style. For example: `F T200 R0 G0 B107`. All characters must be capitalized.
+
+For any command's parameters, if it is not provided, the initial or last values will be used instead.
+
+If a parameter is repeated, or two parameters that change the same values are used at the same time, the right-most occurrence takes precedence.
+
+### `B` Breathe
+
+Usage `B`
+
+Changes into "Breathe" mode.
+
+### `F` Fade
+
+Usage: `F T<time> R<red> G<green> B<blue>`
+
+Fades into a color specified by `R` `G` `B` in `T` milliseconds. Use `T0` for an instant change. Changes into "Set Color" mode.
+
+Note that on a 328p, the maximum PWM resolution is 256 distinct values. If anything outside of that range is used, it will overflow.
+
+### `T` Tickrate
+
+Usage: `T R<rate> I<interval>`
+
+Changed the ticks-per-second to `R`, or the tick interval by `I` milliseconds.
\ No newline at end of file
diff --git a/main/letctl.code-workspace b/main/letctl.code-workspace
new file mode 100755
index 0000000..0d17c92
--- /dev/null
+++ b/main/letctl.code-workspace
@@ -0,0 +1,95 @@
+{
+	"folders": [
+		{
+			"path": ".."
+		},
+		{
+			"path": "../../js-ledctl-gui"
+		},
+		{
+			"path": "../../../Downloads/matrixclienttest"
+		}
+	],
+	"settings": {
+		"editor.insertSpaces": false,
+		"files.associations": {
+			"cstring": "cpp",
+			"algorithm": "cpp",
+			"associative_base": "cpp",
+			"basic_definitions": "cpp",
+			"bitset": "cpp",
+			"cctype": "cpp",
+			"char_traits": "cpp",
+			"clocale": "cpp",
+			"cmath": "cpp",
+			"complex": "cpp",
+			"cstdarg": "cpp",
+			"cstddef": "cpp",
+			"cstdio": "cpp",
+			"cstdlib": "cpp",
+			"ctime": "cpp",
+			"cwchar": "cpp",
+			"cwctype": "cpp",
+			"deque": "cpp",
+			"exception": "cpp",
+			"func_exception": "cpp",
+			"functional": "cpp",
+			"initializer_list": "cpp",
+			"iomanip": "cpp",
+			"ios": "cpp",
+			"iosfwd": "cpp",
+			"iostream": "cpp",
+			"istream": "cpp",
+			"istream_helpers": "cpp",
+			"iterator": "cpp",
+			"iterator_base": "cpp",
+			"limits": "cpp",
+			"list": "cpp",
+			"locale": "cpp",
+			"map": "cpp",
+			"memory": "cpp",
+			"new": "cpp",
+			"numeric": "cpp",
+			"ostream": "cpp",
+			"ostream_helpers": "cpp",
+			"queue": "cpp",
+			"serstream": "cpp",
+			"set": "cpp",
+			"sstream": "cpp",
+			"stack": "cpp",
+			"stdexcept": "cpp",
+			"streambuf": "cpp",
+			"string": "cpp",
+			"string_iostream": "cpp",
+			"type_traits": "cpp",
+			"typeinfo": "cpp",
+			"utility": "cpp",
+			"valarray": "cpp",
+			"vector": "cpp",
+			"array": "cpp",
+			"atomic": "cpp",
+			"strstream": "cpp",
+			"bit": "cpp",
+			"*.tcc": "cpp",
+			"chrono": "cpp",
+			"compare": "cpp",
+			"concepts": "cpp",
+			"condition_variable": "cpp",
+			"cstdint": "cpp",
+			"unordered_map": "cpp",
+			"memory_resource": "cpp",
+			"optional": "cpp",
+			"random": "cpp",
+			"ratio": "cpp",
+			"string_view": "cpp",
+			"system_error": "cpp",
+			"tuple": "cpp",
+			"fstream": "cpp",
+			"mutex": "cpp",
+			"ranges": "cpp",
+			"stop_token": "cpp",
+			"thread": "cpp",
+			"cinttypes": "cpp"
+		}
+	}
+}
\ No newline at end of file
diff --git a/main/main.ino b/main/main.ino
new file mode 100755
index 0000000..a02d56b
--- /dev/null
+++ b/main/main.ino
@@ -0,0 +1,274 @@
+#define RED_LED 5
+#define GREEN_LED 3
+#define BLUE_LED 6
+#define STATUS_LED 4
+
+#define MAX_NUMBER_DIGITS 4
+
+using namespace std;
+
+int tps = 33;
+unsigned long current_ms = millis();
+unsigned long tick_interval_tracker = 0;
+unsigned int tick_interval = 1000 / tps;
+
+int leds[] = {RED_LED, GREEN_LED, BLUE_LED};
+int led_iterator = 0;
+int mode = 0; // 0 = breathe, 1 = set color
+float current_vals[] = {0, 0, 0};
+
+int breathe_increments[] = {1, 2, 4};
+int breathe_directions[] = {0, 0, 0};
+
+int target_vals[] = {0, 0, 0};
+int fade_ticks = 0;
+int fade_ms = 0;
+float fade_increments[] = {0, 0, 0};
+
+char current_char = ' ';
+char command = ' ';
+char arg = ' ';
+char current_number_string[MAX_NUMBER_DIGITS + 1];
+int position = 0;
+int current_number_len = 0;
+int parsed_number = 0;
+bool end_of_line = 0;
+
+void setup() {
+
+	Serial.begin(9600);
+	Serial.println("ready.");
+
+	pinMode(RED_LED, OUTPUT);
+	pinMode(GREEN_LED, OUTPUT);
+	pinMode(BLUE_LED, OUTPUT);
+	pinMode(STATUS_LED, OUTPUT);
+
+	reset_number_string();
+
+}
+
+void loop() {
+
+	if (Serial.available()) {
+
+		current_char = Serial.read();
+
+		if (position == 0) {
+
+			switch (current_char) {
+
+				case 'F':
+				case 'T':
+				case 'B':
+					command = current_char;
+					break;
+
+				default:
+					Serial.println("invalid command.");
+					Serial.flush();
+
+					command = arg = ' ';
+					position = parsed_number = 0;
+
+					reset_number_string();
+
+					break;
+
+			}
+
+		} else {
+
+			switch (current_char) {
+
+				case '0' ... '9':
+					if (current_number_len < MAX_NUMBER_DIGITS) {
+
+						current_number_len++;
+						current_number_string[current_number_len - 1] = current_char;
+
+					}
+
+					break;
+
+				case 'R':
+				case 'G':
+				case 'B':
+				case 'T':
+				case 'I':
+					arg = current_char;
+					break;
+
+				case ' ':
+					if (current_number_len > 0) parsed_number = atoi(current_number_string);
+					if (arg != ' ') callback();
+
+					arg = current_char = ' ';
+					reset_number_string();
+
+					break;
+
+				case '\n':
+					if (current_number_len > 0) parsed_number = atoi(current_number_string);
+					end_of_line = true;
+					callback();
+
+					command = arg = ' ';
+					position = parsed_number = 0;
+					reset_number_string();
+
+					break;
+
+				default:
+					Serial.println("invalid syntax.");
+					Serial.flush();
+
+					command = arg = ' ';
+					position = parsed_number = 0;
+
+					reset_number_string();
+
+			}
+
+		}
+
+		if (current_char == '\n') {
+
+			end_of_line = false;
+			Serial.println("ok.");
+
+		} else position++;
+
+	}
+
+	if (millis() - tick_interval_tracker >= tick_interval) {
+
+		tick_interval_tracker += tick_interval;
+		execute_tick();
+
+	}
+
+}
+
+void callback() {
+
+	switch (command) {
+
+		case 'B':
+			mode = 0;
+			break;
+
+		case 'F':
+			switch (arg) {
+
+				case 'T':
+					fade_ms = parsed_number;
+					break;
+
+				case 'R':
+					target_vals[0] = parsed_number;
+					break;
+
+				case 'G':
+					target_vals[1] = parsed_number;
+					break;
+
+				case 'B':
+					target_vals[2] = parsed_number;
+					break;
+
+			}
+
+			if (end_of_line == true) {
+
+				if (fade_ms <= tick_interval) {
+
+					mode = 1;
+					fade_ticks = 0;
+
+				} else {
+
+					mode = 1;
+					fade_ticks = ceil(fade_ms / (float) tick_interval);
+
+					led_iterator = 0;
+					while (led_iterator < 3) {
+
+						fade_increments[led_iterator] = -((current_vals[led_iterator] - target_vals[led_iterator]) / (float) fade_ticks);
+						led_iterator++;
+
+					}
+
+				}
+
+			}
+
+			break;
+
+		case 'T':
+			if (arg == 'R') {
+				
+				tps = parsed_number;
+				tick_interval = 1000 / tps;
+				
+			} else if (arg == 'I') {
+				
+				tick_interval = parsed_number;
+				tps = 1000 / tick_interval;
+
+			}
+
+			break;
+
+	}
+}
+
+void reset_number_string() {
+
+	for (int i = 0; i < MAX_NUMBER_DIGITS; i++) current_number_string[i] = ' ';
+	current_number_string[MAX_NUMBER_DIGITS] = '\0';
+	current_number_len = 0;
+
+}
+
+void execute_tick() {
+
+	if (mode == 0) {
+
+		led_iterator = 0;
+		while (led_iterator < 3) {
+
+			if (current_vals[led_iterator] <= 0 || current_vals[led_iterator] >= 255) breathe_increments[led_iterator] = -breathe_increments[led_iterator];
+			analogWrite(leds[led_iterator], current_vals[led_iterator]);
+			current_vals[led_iterator] = constrain(current_vals[led_iterator] + breathe_increments[led_iterator], 0, 255);
+
+			led_iterator++;
+
+		}
+
+	} else if (mode == 1) {
+
+		if (fade_ticks > 0) {
+
+			led_iterator = 0;
+			while (led_iterator < 3) {
+
+				current_vals[led_iterator] += fade_increments[led_iterator];
+				analogWrite(leds[led_iterator], current_vals[led_iterator]);
+
+				led_iterator++;
+
+			}
+
+			fade_ticks--;
+
+		} else if (fade_ticks == 0) {
+
+			Serial.println("done.");
+			fade_ticks--;
+
+		}
+
+	}
+
+}