Diff: main.cpp

Revision:

0:004b3a49f410

Child:

1:33b6bf21fbd4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Aug 17 05:35:38 2016 +0000
@@ -0,0 +1,103 @@
+#include "mbed.h"
+#include "rtos.h"
+#include "C12832.h"
+ 
+DigitalOut myled[]={LED1,LED2,LED3,LED4};
+AnalogIn pot(p20);
+C12832 lcd(p5, p7, p6, p8, p11);
+Serial pc(USBTX, USBRX); // tx, rx
+PwmOut Speaker(p26);
+
+int frequency[ ] = {440,0,440,0,440,0,349,0,523,0,440,0,349,0,523,0,440,0,
+                                                659,0,659,0,659,0,698,0,523,0,784,0,698,0,523,0,440,0};
+
+float beat[ ] = {1,0.4,1,0.4,1,0.4,0.8,0.1,0.4,0.1,1.2,0.2,0.8,0.1,0.4,0.1,1.2,1.6,
+                                     1,0.4,1,0.4,1,0.4,0.8,0.1,0.4,0.1,1.2,0.2,0.8,0.1,0.4,0.1,1.2,0.8};
+                                     
+                                     
+typedef struct {
+    uint32_t raw_data;  // ADC raw data     
+    float    voltage;   // AD result of measured voltage 
+} message_t;
+ 
+MemoryPool<message_t, 16> mpool;
+Queue<message_t, 16> queue;
+
+void Knight_Rider(void const *args) {
+    while(true){
+        for(int i=0;i<4;i++) {
+            myled[i]=1;
+            Thread::wait(100);
+            myled[i]=0;
+        }
+        for(int i=2;i>0;i--) {
+            myled[i]=1;
+            Thread::wait(100);
+            myled[i]=0;
+        }
+    }
+}
+
+void ADC_Update(void const *args) {
+    pc.printf("\n\r|*----------------------------*|\n\r");
+    pc.printf("|* Example ADC with Interrupt. |\n\r");
+    pc.printf("|*----------------------------*|\n\r\n\r");
+    while(1) {  
+        //osSignalWait(0x01,osWaitForever);
+        message_t *message = mpool.alloc();
+        message->raw_data = pot.read_u16();
+        message->voltage = pot*3.3; 
+        queue.put(message);  // Place a value in the message queue
+        pc.printf("ADC Value is: %d \n\r\n\r", message->raw_data);// Display ADC value on UART
+        Thread::wait(1000);
+    }
+}
+
+
+void LCD_Display(void const *args) {
+    while (true) {
+        osEvent evt = queue.get();
+        if (evt.status == osEventMessage) {
+            message_t *message = (message_t*)evt.value.p;
+            lcd.locate(0,11);
+            lcd.printf("Raw Data: %u"   , message->raw_data); 
+            lcd.locate(0,20);
+            lcd.printf("Voltage: %.2f volt"   , message->voltage);           
+            mpool.free(message);
+        }
+        Thread::wait(1000);
+    }
+}
+
+void Music(void const *args) {
+    while(1) {     
+  
+        for (uint8_t i=0; i<=35; i++) {
+            Speaker.period(1.0/frequency[i]);  // 4 second period
+            Speaker=0.5; 
+            Thread::wait(400*beat[i]);   // hold for beat period
+        }
+    
+    /*     
+        for (float i=2000.0; i<10000.0; i+=100) {
+            Speaker.period(1.0/i);
+            Speaker=0.5;
+            Thread::wait(100);
+        }
+    */
+    }
+}
+    
+int main() {
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("mBed-RTOS Mini Project");
+    
+    //Thread thread1(Knight_Rider, (void *)"Th 1"), osPriorityNormal, (uint32_t) DEFAULT_STACK_SIZE, (unsigned char *)NULL);
+    Thread thread1(Knight_Rider);
+    Thread thread2(ADC_Update,(void *)"Th 2", osPriorityAboveNormal,DEFAULT_STACK_SIZE,NULL);
+    Thread thread3(LCD_Display);
+    Thread thread4(Music);
+    
+    while (true);
+}