Diff: main.cpp

Revision:

0:87d9eb921232

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Nov 29 06:17:30 2017 +0000
@@ -0,0 +1,152 @@
+#include "mbed.h"
+#include "Servo.h"
+#include "rtos.h"
+#include "SDFileSystem.h"
+#include "wave_player.h"
+RawSerial  pi(USBTX, USBRX);
+Mutex serial_mutex;
+
+Servo myservo(p21);
+AnalogIn LM61(p15);
+
+SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
+AnalogOut DACout(p18);
+//On Board Speaker
+//PwmOut PWMout(p25);
+wave_player waver(&DACout);
+
+volatile float temp_out;
+volatile float rpm_out;
+volatile float wheel_speed_out;
+volatile int treat = 0;
+volatile int music = 0;
+volatile bool x;
+
+DigitalOut myled1(LED1);
+DigitalOut myled2(LED2);
+DigitalOut myled3(LED3);
+
+volatile long int count;
+
+Serial pc(USBTX, USBRX);
+Timer t;
+InterruptIn risingEdge(p11);
+
+void dev_recv()
+{   while(1){
+        char temp = 0;
+        while(pi.readable()) {
+            myled3 = !myled3;
+            serial_mutex.lock();
+            temp = pi.getc();
+            if (temp=='t'){
+                myled2=1;
+                treat=1;
+            }
+            if (temp=='m'){
+                myled1=1;
+                music=1;
+            }
+            serial_mutex.unlock();
+        }
+    }
+}
+
+void check_temp() {
+    float tempC, tempF;
+    while (1) {
+        //conversion to degrees C - from sensor output voltage per LM61 data sheet
+        tempC = ((LM61*3.3) - 0.600)*100.0;
+        //convert to degrees F
+        tempF = (9.0*tempC) / 5.0 + 32.0;
+        temp_out = tempF + 16.7;
+        //print current temp
+        Thread::wait(500);
+    }
+}
+
+void deliver_snack()
+{   while(1){
+        if (treat == 1) {
+            myservo = 1; //closed position
+            Thread::wait(1000);
+            myservo = .7; //open position
+            Thread::wait(200); // open for .2 secs delivers half a small tupperware
+            myservo = 1;
+            Thread::wait(500);
+            treat = 0;
+            myled2=0;
+        }
+        Thread::yield();
+    }
+}
+
+
+
+
+char* getOut()
+{
+    char output[22];
+
+    snprintf(output, 22, "%3.1f, %4.0f, %1.5f \n", temp_out, rpm_out, wheel_speed_out);
+    return output;
+}
+
+void send_data() {
+    while(1)
+    {
+        serial_mutex.lock();
+        pi.puts(getOut());
+        serial_mutex.unlock();
+        Thread::wait(5000);
+        
+    }
+}
+
+void pulses() {
+    count++;
+}
+
+void check_wheel() {
+    double rpm = 0;
+    double speed = 0;
+    double circumference = 0.266 * 3.1416; // 26. cm wheel diameter * pi 
+    risingEdge.rise(&pulses);
+    long int temp = count;
+    while (1) {
+        count = 0;
+        t.reset();
+        t.start();
+        while (t.read_ms() < 2001) {
+            ;
+        }
+        t.stop();
+        temp=count;
+        double rev = (double)temp;
+        double rpm = rev * 30;
+        double speed = circumference * rev;
+        rpm_out = (float)rpm;
+        wheel_speed_out = (float)speed;
+    }
+}
+
+
+int main() {
+    //printf("Hello, in Main");
+    Thread t1(check_temp);
+    Thread t2(send_data);
+    Thread t3(check_wheel);
+    Thread t4(dev_recv);
+    Thread t5(deliver_snack);
+
+    while (1) {
+        if (music == 1) {
+            FILE *wave_file = fopen("/sd/wavfiles/crickets.wav", "r");
+            waver.play(wave_file);
+            fclose(wave_file);
+            Thread::wait(1000);
+            music = 0;
+            myled2=0;
+        }
+    }
+}