Diff: main.cpp

Revision:

0:f1b1100243a3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Sep 27 09:46:05 2021 +0000
@@ -0,0 +1,100 @@
+#include "mbed.h"
+#include "rtos.h"
+
+#include "LM75B.h"
+#include "C12832.h"
+
+Mutex speaker_mutex; 
+
+C12832 lcd(p5, p7, p6, p8, p11);
+LM75B sensor(p28,p27);
+Serial pc(USBTX,USBRX);
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3); 
+
+PwmOut spkr(p26);
+DigitalIn fire(p14);
+
+void led1_thread(void const *args) {
+    while (true) {
+        
+         //play tone on speaker
+         
+         //lock mutex
+         /////////////////////
+         speaker_mutex.lock(); 
+         for (float i=2000.0; i<10000.0; i+=100) 
+            {
+            spkr.period(1.0/i);
+            spkr=0.5;
+            
+            led1 = !led1;
+            Thread::wait(50);
+            }
+          
+        spkr=0.0;
+        //unlock mutex
+        //////////////////////
+        speaker_mutex.unlock(); 
+        
+        //wait for user to hit fire before repeating
+        while(!fire) {
+            led1 = !led1;}
+
+    }
+}
+
+void led2_thread(void const *args) {
+        
+    //Try to open the LM75B
+    if (sensor.open()) {
+        printf("Device detected!\n");
+        }
+        
+    while (true) 
+        {
+        
+        lcd.cls();
+        lcd.locate(0,3);
+        lcd.printf("Temp = %.3f\n", (float)sensor.temp());
+             
+        //play one pulse tone for 1 second if temp high
+        if((float)sensor.temp() > 26)
+            {
+            //lock mutex
+            /////////////////////
+            speaker_mutex.lock(); 
+            
+            spkr.period(1.0/1000);
+            spkr=0.5;
+         
+         
+            }
+        else
+            {
+
+            
+            //turn off after every pulse
+            spkr=0.0;   
+                        
+            //unlock mutex
+            //////////////////////
+            speaker_mutex.unlock();   
+            }
+        
+        led2 = !led2;
+        Thread::wait(850);
+        }
+}
+ 
+int main() {
+    Thread thread1(led1_thread);
+    Thread thread2(led2_thread);
+    
+    while (true) {
+        led3 = !led3;
+        Thread::wait(1100);
+    }
+}