Diff: main.cpp

Revision:

0:24f914e903b4

Child:

1:756c9df9881f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jun 10 15:36:18 2015 +0000
@@ -0,0 +1,75 @@
+/* 
+Serial Communication with a PC
+The mbed Microcontroller can communicate with a host PC through a "USB Virtual Serial Port" 
+over the same USB cable that is used for programming.
+This enables you to:
+a) Print out messages to a host PC terminal (useful for debugging!)
+b) Read input from the host PC keyboard
+c) Communicate with applications and programming languages running on the host PC 
+   that can communicate with a serial port, e.g. perl, python, java, c# and so on.
+.. see http://mbed.org/handbook/SerialPC 
+
+The C stdin, stdout and stderr file handles are also defaulted to the PC serial connection
+standard calls are: printf, scanf, getc, putc, ..
+*/
+
+#include "mbed.h"
+// global vars and objects
+BusOut doLeds(LED1,LED2,LED3,LED4);
+DigitalOut led2(LED2);
+Serial pc(USBTX, USBRX); // tx, rx    ; is default !!! (9600, 8N1)
+char recChar=0;
+bool recFlag=false;
+char recArr[20];
+int index=0;
+
+// functions
+void flushSerialBuffer() { 
+    while (pc.readable()) { 
+        pc.getc(); 
+    } 
+}
+    
+void readData() {
+    recChar = pc.getc();
+    recArr[index] = recChar;
+    index++;
+    
+        recFlag = true;
+        recArr[index] = 0;
+        index = 0;
+        pc.printf(" - That's the input: %s\r\n", recArr);  
+        
+        if(recArr[0]=='a')
+        {
+            doLeds = 0;
+            };
+        if(recArr[0]=='b')
+        {
+            doLeds = 16;
+            };
+        
+        flushSerialBuffer();
+        
+    
+}
+    
+int main() {
+//    pc.baud(115200);
+    pc.baud(38400);
+    pc.format(8, SerialBase::Odd, 2);
+    led2 = 1;
+
+    flushSerialBuffer();
+    pc.printf("Hatzl Andreas: Gruppe A\r\n Bitte geben Sie einen Befehl ein:\r\n");
+    pc.attach(&readData);
+    
+    while(1) {
+        if (recFlag) {
+            flushSerialBuffer();
+//            pc.printf(" - That's the input: %s\r\n", recArr);  // non reantrant function
+            recFlag = false;
+            led2 = !led2;
+        }
+    }
+}