Diff: main.cpp

Revision:

0:1420a38edeb2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Oct 16 20:20:09 2018 +0000
@@ -0,0 +1,118 @@
+#include "mbed.h"
+#include "rtos.h"
+#include "uLCD_4DGL.h"
+#include "wave_player.h"
+#include "SDFileSystem.h"
+
+uLCD_4DGL lcd(p28,p27,p29);        // LCD (serial tx, serial rx, reset pin;)
+//leds using PwmOut
+PwmOut red(p26);
+PwmOut green(p25);
+PwmOut blue(p24);
+//Serial out for changing led color using ble
+RawSerial bluemod(p9,p10);
+//Analog out for speaker, and waveplayer linked to this pin
+AnalogOut DACout(p18);
+//Wave player and sd system for playing sound clips
+wave_player waver(&DACout);
+SDFileSystem sd(p5, p6, p7, p8, "sd");
+// mutex to make the lcd lib thread safe
+Mutex lcd_mutex;
+// Global color values used for lighting the led
+float ble_red;
+float ble_green;
+float ble_blue;
+
+// Thread 1
+// Read in the color input from ble
+void thread1(void const *args)
+{   
+    char bred=0;
+    char bgreen=0;
+    char bblue=0;
+    
+    while(1) {
+        //lcd_mutex.lock();
+        if (bluemod.getc()=='!') {
+            if (bluemod.getc()=='C') { //color data packet
+                bred = bluemod.getc(); // RGB color values
+                bgreen = bluemod.getc();
+                bblue = bluemod.getc();
+                if (bluemod.getc()==char(~('!' + 'C' + bred + bgreen + bblue))) { //checksum OK?
+                    ble_red = bred/255.0; //send new color to RGB LED PWM outputs
+                    ble_green = bgreen/255.0;
+                    ble_blue = bblue/255.0;
+                }
+            }
+        }
+        //lcd_mutex.unlock();
+    }
+}
+// Thread 2
+// Update the lcd with the current rgb values
+void thread2(void const *args)
+{
+    while(true) {       // thread loop
+        lcd_mutex.lock();
+        lcd.color(WHITE);
+        lcd.locate(1,1);
+        lcd.printf("R: %f", (float)red);
+        lcd.locate(1,3);
+        lcd.printf("B: %f", (float)blue);
+        lcd.locate(1,5);
+        lcd.printf("G: %f", (float)green);
+        lcd_mutex.unlock();
+        Thread::wait(150);
+    }
+}
+// Thread 3
+// Display the current program time
+void thread3(void const *args)
+{
+    int t = 0;
+    while(1) {
+        lcd_mutex.lock();
+        lcd.locate(1,9);
+        lcd.color(RED);
+        lcd.printf("Time: %d seconds", t);
+        lcd_mutex.unlock();
+        
+        t++;
+        Thread::wait(1000);
+    }
+}
+// Thread 4
+// Take the color input from ble and ramp it up on the leds
+void thread4(void const *args)
+{   
+    while(1) {
+        red = green = blue = 0;
+        for (int i = 5; i >= 1; --i) {
+            red = ble_red/i;
+            green = ble_green/i;
+            blue = ble_blue/i;
+            Thread::wait(300);
+        }
+    }   
+}
+
+int main()
+{
+    //Get a file pointer for playing audio
+    FILE *wave_file;
+    //Jack up the lcds baud rate
+    lcd.baudrate(3000000);
+    
+    Thread t1(thread1); //start thread1
+    Thread t2(thread2); //start thread2
+    Thread t3(thread3); //start thread3
+    Thread t4(thread4); //start thread4
+
+    while(1) {
+        wave_file=fopen("/sd/mydir/siren.wav","r");
+        if(wave_file==NULL) printf("file open error!\n\n\r");
+        waver.play(wave_file);
+        fclose(wave_file);
+        Thread::wait(1000);
+    }
+}