Diff: main.cpp

Revision:

0:6c9ad71dd3b9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Jun 17 03:39:19 2012 +0000
@@ -0,0 +1,76 @@
+#include "mbed.h"
+#include "TextLCD.h"
+
+#define READBUFFERSIZE (32)
+
+Serial g_serial(USBTX, USBRX);
+TextLCD g_lcd(p15, p16, p17, p18, p19, p20);  // RS, E, DB4, DB5, DB6, DB7
+
+int ReadLineString( Serial& serial,
+                    char szReadBuffer[], const int ciReadBufferSize, int& riIndexChar,
+                    char szLineString[], const int ciLineStringSize )
+{
+    while( 1 )
+    {
+        if( !serial.readable() )
+        {
+            break;
+        }
+        char c = serial.getc();
+        if( '\r' == c  )
+        {
+            szReadBuffer[riIndexChar] = '\0';
+            strncpy( szLineString, szReadBuffer, ciLineStringSize - 1 );
+            szLineString[ciLineStringSize - 1] = '\0';
+            riIndexChar = 0;
+            return 1;
+        }
+        else if( '\n' == c )
+        {
+            ;
+        }
+        else
+        {
+            if( (ciReadBufferSize - 1) > riIndexChar )
+            {
+                szReadBuffer[riIndexChar] = c;
+                riIndexChar++;
+            }
+        }
+    }
+
+    return 0;
+}
+
+int main()
+{
+    // setup
+    g_serial.baud(9600);
+    wait(0.001);
+    g_lcd.cls(); wait(0.001);
+    g_lcd.printf( "(ready)" );
+    
+    // loop
+    int iCounter = 0;
+    char szReadBuffer[READBUFFERSIZE] = "";
+    int iIndexChar = 0;
+    while(1)
+    {
+        // send
+        g_serial.printf( "%d\n", iCounter );
+        iCounter++;
+        wait(1.0);
+        
+        // read
+        char szLineString[READBUFFERSIZE];
+        if( !ReadLineString( g_serial, 
+                             szReadBuffer, READBUFFERSIZE, iIndexChar,
+                             szLineString, READBUFFERSIZE ) )
+        {
+            continue;
+        }
+        g_lcd.cls(); wait(0.001);
+        g_lcd.locate(0, 0);
+        g_lcd.printf( szLineString );
+    }
+}