Diff: main.cpp

Revision:

0:76154cf1151b

diff -r 000000000000 -r 76154cf1151b main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Nov 20 00:12:58 2015 +0000
@@ -0,0 +1,36 @@
+#include "mbed.h"
+
+//------------------------------------
+// Hyperterminal configuration
+// 9600 bauds, 8-bit data, no parity
+// UART RX overrun: Type in characters quickly to see if program freezes
+//------------------------------------
+
+Serial pc(USBTX, USBRX);
+
+DigitalOut myled(LED1);
+
+void rx_cb()
+{
+    int i;
+
+    pc.putc(pc.getc()); // echo
+    myled = 1;
+
+    /* delay is very bad action here,
+     * but purpose is to create a UART RX overrun */
+    for (i = 0; i < 0x20000; i++)
+        __nop();    
+
+    myled = 0;
+}
+ 
+int main()
+{
+    pc.printf("\r\nstart\r\n");
+    pc.attach(&rx_cb);
+
+    while(1) { 
+        __nop();
+    }
+}