Diff: main.cpp

Revision:

0:0f5f8d4652d3

Child:

1:469f8bbbd5f0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Jan 21 23:25:46 2016 +0000
@@ -0,0 +1,75 @@
+#include "mbed.h"
+#include "C12832.h"
+#include <string>
+
+using namespace std;
+
+/*
+ * Outputs
+ */
+C12832 lcd(D11, D13, D12, D7, D10);
+Serial host (USBTX, USBRX);
+PwmOut speaker(D6);
+
+InterruptIn sw3(PTA4);
+
+volatile int bufferInsert = 0;
+volatile int currentBufferSize = 0;
+const int bufferSize = 512;
+char rxBuffer[bufferSize];
+//Ascii code for "-", it is used to end messages
+const char dash = 45;
+
+void rxInterrupt(void){
+    //Reads all available data from the serial into the buffer as long as the buffer is not full       
+    while ((host.readable()) && (currentBufferSize != bufferSize)){
+        rxBuffer[bufferInsert] = host.getc();
+        bufferInsert = (bufferInsert + 1) % bufferSize;
+        currentBufferSize++;
+    }
+    int index = (bufferInsert - currentBufferSize) % bufferSize;
+    string message = "";
+    //Looks for a message in buffer
+    while (index != bufferInsert){
+        if(rxBuffer[index] == dash){
+            //everything between (bufferInsert - currentBufferSize) and index is the message
+            //Removes the message from the buffer
+            while(((bufferInsert - currentBufferSize) % bufferSize) != index){
+                message.append(string(1, rxBuffer[((bufferInsert - currentBufferSize) % bufferSize)]));
+                currentBufferSize--;
+            }
+            //The last character will be "-", so it removes it from the buffer
+            currentBufferSize--;                
+            break;
+        }
+        index = (index + 1) % bufferSize;
+    }
+    if(message == "jordan ping" || message == "arez ping" || message == "niklas ping"){
+        lcd.cls();
+        lcd.locate(0,10);
+        lcd.printf("%sed you", message.c_str());
+        for (float i=2000.0f; i<10000.0f; i+=100) {
+            speaker.period(1.0f/i);
+            speaker=0.5;
+            wait(0.02);
+        }
+        speaker=0.0;
+    }
+}
+
+void sw3interrupt(void){
+    host.printf("niklas ping-");
+}
+
+int main(void){
+    host.baud(38400);
+    
+    sw3.mode(PullUp);
+    sw3.fall(&sw3interrupt);
+    
+    host.attach(&rxInterrupt, Serial::RxIrq);
+    
+    for(;;){
+        wait(0.1);
+    }
+}
\ No newline at end of file