How to merge Arduino code with flutter bluetooth? [closed] - flutter

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This is the Slider code: (without bluetooth)
import 'package:flutter/material.dart';
import 'package:syncfusion_flutter_sliders/sliders.dart';
import 'package:flutter_blue/flutter_blue.dart';
import 'package:intl/intl.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title;
#override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
double height = 70;
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("LED control"),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text("Brightness: ${height}", style: TextStyle(fontSize: 30),),
ElevatedButton(
onPressed: (){
showModalBottomSheet(context: context,
builder: (BuildContext context){
return Container(
height: 200,
child: Center(child:
StatefulBuilder(
builder: (context,state){
return Center(
child: SfSlider(
value: height.toDouble(),
max: 100,
min: 50,
showTicks: true,
showLabels: true,
enableTooltip: true,
onChanged: (value) {
state(() {
height = value.round() as double;
});
setState(() {
});
},
),
);
},
),
),
);
}
);
},
child: Text(" Select Value "),
),
],
),
),
);
}
}
This is the ESP 32 Arduino code:
# # ```
Library for Bluetooth Related Functionalities
# # #include "BluetoothSerial.h"
# # //Intialise the Bluetooth
BluetoothSerial ESP_BT;
Stored Variable
String incoming_value;
int onoff=0;
float brightness=0.5;
int colour=127;
int autowc=1;
float g=2.0; //gamma correction
GPIO for LED (Warm- RX2(PIN 16) , Cool-TX2 (Pin17))
int LED1=16;
int LED2=17;
Setting PWM Properties
const int freq = 100000;
const int ledChannel1 = 0;
const int ledChannel2 = 1;
Duty Cycle
const int resolution = 9;
Gamma Correction
const uint8_t PROGMEM gamma8[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2,
2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5,
5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10,
10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14,
15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20,
21, 21, 22, 22, 23, 24, 24, 25, 25, 26, 27, 27,
28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 35, 36,
37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 50, 51, 52, 54, 55, 56, 57, 58, 59,
60, 61, 62, 63, 64, 66, 67, 68, 69, 70, 72, 73,
74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89,
90, 92, 93, 95, 96, 98, 99, 101, 102, 104, 105,
107, 109, 110, 112, 114, 115, 117, 119, 120, 122,
124, 126, 127, 129, 131, 133, 135, 137, 138, 140,
142, 144, 146, 148, 150, 152, 154, 156, 158, 160,
162, 164, 167, 169, 171, 173, 175, 177, 180, 182,
184, 186, 189, 191, 193, 196, 198, 200, 203, 205,
208, 210, 213, 215, 218, 220, 223, 225, 228, 231,
233, 236, 239, 241, 244, 247, 249, 252, 255
# # };
void setup() {
Serial.begin(9600); // Initialise Bluetooth Interface
ESP_BT.begin("ESP32_LED_Control"); // name of bluetooth
Serial.println("Pair your Device"); // Serial Monitor prints this once upload
ledcSetup(ledChannel1, freq, resolution); // Configure and set up LED PWM functions for channel 1
ledcSetup(ledChannel2, freq, resolution); // Configure and set up LED PWM functions for channel 2
ledcAttachPin(LED1, ledChannel1); // LED1 for singal output, Channel 1 will genertate the signal
ledcAttachPin(LED2, ledChannel2); // LED2 for singal output, Channel 2 will genertate the signal
# # }
void loop(){
if (Serial.available()) { // For testing purposes
String input= Serial.readString(); // Key in and read (0-100)
colour= input.toFloat() / 100.0 * 255.0; // Convert to 0-255
Serial.print("Colour inout:"); // print the conversion
Serial.println(input);
# # }
if (ESP_BT.available()) // Check if we receive anything from Bluetooth, adn proceed to next line.
# # {
incoming_value = ESP_BT.readString(); // Read what we received from the phone application
Serial.println(incoming_value); // print what we received from phone application
ON (LED: 1) & OFF (LED:0)
if (incoming_value.indexOf("LED:") >=0)
# # {
incoming_value = incoming_value.substring(incoming_value.lastIndexOf(':') + 1); // Take the string after semicolon (LED)
onoff= incoming_value.toInt(); // Convert the string into Integer
Serial.print("Received:"); // Print the LED value
Serial.println(onoff);
# # }
# # //Brightness (Brightness: x)
else if (incoming_value.indexOf("Brightness:") >=0)
# # {
incoming_value = incoming_value.substring(incoming_value.indexOf(':') + 1); // Take the string after semicolon(Brightness)
brightness = incoming_value.toFloat() / 100.0; // Convert the string into float and divide by 100
brightness= pow(brightness, g);
Serial.print("Received:");
Serial.println(brightness);
# # }
Colour Temperature (colour:x) 0-255
else if (incoming_value.indexOf("Colour Temperature:") >=0)
# # {
incoming_value= incoming_value.substring(incoming_value.indexOf(':') + 1); // Take the string after the semicolon (Colour temperature)
colour= incoming_value.toInt();
Serial.print("Received");
Serial.println(colour);
# # }
# # //Auto-warm 3000K / Auto-Cool 5700k
else if (incoming_value.indexOf("Auto:") >=0 )
# # {
incoming_value = incoming_value.substring(incoming_value.indexOf(':') + 1); // Take the string after semicolon (Auto-Warm / Auto-Cool)
autowc = incoming_value.toInt();
Serial.print("Received:");
Serial.println(autowc);
# # }
# # }
ON
if (onoff ==1 ){
float cool_val= 0;
float warm_val= 0;
ON > Colour temperature 3000K > Get user brightness > Warm Light On > Cool Light Off
if (autowc == 3000){
warm_val = brightness * 255.0;
cool_val = 0;
# # }
ON > Colour Temperature 5700K> Get user brightness > Cool Light On > Warm Light Off
else if (autowc == 5700) {
warm_val = 0;
cool_val = brightness *255.0;
# # }
ON > Customisation > User Input
else if (autowc ==1) {
warm_val = byte(brightness * (255.0 - float(colour)));
cool_val = byte(brightness * float(colour));
# # }
warm_val *= 2.0;
cool_val *= 2.0;
Serial.printf("warm val:%f cool val: %f\n", warm_val, cool_val);
ledcWrite(ledChannel1, int(warm_val));
ledcWrite(ledChannel2, int(cool_val));
# # }
# # //OFF
if (onoff == 0){
ledcWrite(ledChannel1, 0); // Warm Light Off
ledcWrite(ledChannel2, 0); // Cool Light Off
# # }
delay(1); // Short Delay
# # }
# # ```
# # ```
Right now I need some opinions on how to get the create the app using Flutter to work with the Arduino code as well as on the app interface to have a slider control which is able to use bluetooth to communicate with the esp32 to control the hardware which is the LED.