/*********
* Aula10_3_0_0.ino
*
* Multiprocessamento
*
* Leds ligados de forma direta resistor em série ao GND GPIO 16 e 17
* potenciometro 0 extremos VCC e GND central ligado GPIO 34 ADC1_6
* potenciometro 1 extremos VCC e GND central ligado GPIO 14 ADC2_6
*
* Versão:0.0.0 - Exemplo de maultiprocessamento
*                https://randomnerdtutorials.com/esp32-dual-core-arduino-ide/?authuser=0
*        1.0.0 - Introdução decontrole PWM no core0        
*        2.0.0 - Introdução decontrole PWM no core1
*        3.0.0 - OLEDI2C mostrandoos percentuai de PWM
*                Exemplo Monochrome OLEDs based on SSD1306 drivers Adafruit 128x64 pixel display using I2C
*
* Data: 12/10/2023               
* Luiz Oscar Ruschel Pilger
*
*/

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // largura da tela OLED, em pixels
#define SCREEN_HEIGHT 64 // altura da tela OLED, em pixels

// Declaração para um monitor SSD1306 conectado ao I2C (pinos SDA, SCL)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

TaskHandle_t Task1;
TaskHandle_t Task2;

// LED pins
const int led0 = 16;
const int led1 = 17;

// Constantes
#define sensorPino0 34
#define sensorPino1 14

#define leituras 10

#define canalPwm0 0
#define canalPwm1 1
#define resolucaoAdPwm 12
#define freqPwm 1000

int perct0, perct1;

void setup() {
  Serial.begin(115200); 

  // oled
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Endereço 0x3D para 128x64
    Serial.println(F("Falha na alocação SSD1306"));
    for (;;);
  }
  //delay(2000);
  display.clearDisplay();

  display.setTextSize(2);
  display.setTextColor(WHITE);

  // configurações do A/D
  analogReadResolution ( resolucaoAdPwm ); // resolução de 12 bits
  // Atenuação: ADC_0db, ADC_2_5db, ADC_6db, ADC_11db
  // 0dB: 100 - 950mV # 2.5dB: 100 - 1250mV # 6dB: 150 - 1750mV # 11dB: 150 - 2450mV
  analogSetPinAttenuation (sensorPino0, ADC_11db); // Atenuação de 6db no pino sensorPino
  analogSetPinAttenuation (sensorPino1, ADC_11db); // Atenuação de 6db no pino sensorPino
  // pwm
  ledcSetup(canalPwm0, freqPwm, resolucaoAdPwm);
  ledcAttachPin(led0, canalPwm0);
  ledcSetup(canalPwm1, freqPwm, resolucaoAdPwm);
  ledcAttachPin(led1, canalPwm1);
  
//  pinMode(led1, OUTPUT);
//  pinMode(led2, OUTPUT);

  //create a task that will be executed in the Task1code() function, with priority 1 and executed on core 0
  xTaskCreatePinnedToCore(
                    Task1code,   /* Task function. */
                    "Task1",     /* name of task. */
                    10000,       /* Stack size of task */
                    NULL,        /* parameter of the task */
                    1,           /* priority of the task */
                    &Task1,      /* Task handle to keep track of created task */
                    0);          /* pin task to core 0 */                  
  delay(500); 

  //create a task that will be executed in the Task2code() function, with priority 1 and executed on core 1
  xTaskCreatePinnedToCore(
                    Task2code,   /* Task function. */
                    "Task2",     /* name of task. */
                    10000,       /* Stack size of task */
                    NULL,        /* parameter of the task */
                    1,           /* priority of the task */
                    &Task2,      /* Task handle to keep track of created task */
                    1);          /* pin task to core 1 */
    delay(500); 
}

//Task1code: blinks an LED every 1000 ms
void Task1code( void * pvParameters ){
  while(1){
    // Leitura do sensor
    long sensorValor0 = 0;  // zera as leituras
    for (int i = 0; i < leituras; i++) {
      sensorValor0 = sensorValor0 + analogRead(sensorPino0); // acumula as leituras
      delay(1); // tempo para o conversor
    }
    sensorValor0 = sensorValor0 / leituras; // calcula a média
    perct0 = map(sensorValor0,0,4095,0,100);
    Serial.println(sensorValor0);  // imprime a media da conversão
    ledcWrite(canalPwm0,sensorValor0);
  
    Serial.print("Task1 running on core ");
    Serial.println(xPortGetCoreID());
    delay(500);
  }
//  Serial.print("Task1 running on core ");
//  Serial.println(xPortGetCoreID());
//
//  for(;;){
//    digitalWrite(led1, HIGH);
//    delay(1000);
//    digitalWrite(led1, LOW);
//    delay(1000);
//    } 
}

//Task2code: blinks an LED every 700 ms
void Task2code( void * pvParameters ){
  while(1){
    long sensorValor1 = 0;  // zera as leituras
    for (int i = 0; i < leituras; i++) {
      sensorValor1 = sensorValor1 + analogRead(sensorPino1); // acumula as leituras
      delay(1); // tempo para o conversor
    }
    sensorValor1 = sensorValor1 / leituras; // calcula a média
    perct1 = map(sensorValor1,0,4095,0,100);
    Serial.println(sensorValor1);  // imprime a media da conversão
    ledcWrite(canalPwm1,sensorValor1);
  
    Serial.print("Task1 running on core ");
    Serial.println(xPortGetCoreID());
    delay(500);
  }
//  Serial.print("Task2 running on core ");
//  Serial.println(xPortGetCoreID());
//
//  for(;;){
//    digitalWrite(led2, HIGH);
//    delay(700);
//    digitalWrite(led2, LOW);
//    delay(700);
//  }
}

void loop() {
  AtualizaOled();
}

void AtualizaOled(){
  display.clearDisplay();
  display.setCursor(0, 10);
  display.println("PWM0 =" + String(perct0) + "%");
  display.println("PWM1 =" + String(perct1) + "%");
  display.display();
}