main.cpp

// ECE 4180 Fall 2019 Project
// Section A: Geuntae Park & Youngjae Cho
// Team name: Dancing Groot

#include "mbed.h"
#include "rtos.h"
#include "SDFileSystem.h"
#include "wave_player.h"
#include "Servo.h"
AnalogIn moisture(p15); // Moisture sensor
SDFileSystem sd(p5, p6, p7, p8, "sd"); //SD card
AnalogOut DACout(p18);
wave_player waver(&DACout);
volatile bool myspeaker = 0;
Servo myservo(p21);
Servo mymotor(p22);

// Thread controlling a servo motor based on the level of moisture
void thread_servo(void const *args)
{
    while(true) {     // thread loop
        if(moisture<=0.18){
        myservo = -1.0;
        wait(0.1);
        myservo = 1.0;
        wait(0.1);
        }
        Thread::wait(200);        
    }
    
}

// Thread controlling a speaker based on the level of moisture

void thread_speaker(void const *args)
{
    while(true) {       // thread loop
        if(moisture<=0.18 && myspeaker ==0)
        {
            FILE *wave_file;
            wave_file=fopen("/sd/sound.wav","r"); 
            waver.play(wave_file);//        
            myspeaker = 1;
        }
        else if(moisture<=0.18 && myspeaker==1)
        {
            FILE *wave_file;
            wave_file=fopen("/sd/sound.wav","r"); 
            waver.play(wave_file);//
            myspeaker = 0;    
        }
        else if(moisture>0.18 && myspeaker ==0)
        {
              
        }
        else if(moisture>0.18 && myspeaker ==1)
        {
            myspeaker = 0;   
        }
        Thread::wait(1100); //
    }
}

// Thread controlling a DC motor based on the level of moisture

void thread_motor(void const *args)
{
    while(true) {     // thread loop
        if(moisture<=0.18){
        mymotor = -1.0;
        wait(0.5);
        mymotor = 1.0;
        wait(0.5);
        }
        Thread::wait(200);        
    }
    
    
}


int main()
{
    Thread tservo(thread_servo);
    Thread tspeaker(thread_speaker);
    Thread tmotor(thread_motor); //start thread_motor

    
    float value = 0.0f;
 
    while(1) {
        value = moisture;
        printf("Moisture reading is %3.5f\n", value);
        wait(1000);
    }
}