Diff: main.cpp

Revision:

0:94cb0da877bc

Child:

1:1d27be3b634d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Sep 07 20:54:08 2016 +0000
@@ -0,0 +1,33 @@
+#include "mbed.h"
+// This program will blink LED1 and LED4
+// using assembly language for LED1 and
+// API functions for LED4
+// declare external assembly language function (in a *.s file)
+extern "C" int my_asm(int value);
+// declare LED outputs – let C set them up as output bits
+DigitalOut myled1(LED1);
+DigitalOut myled4(LED4);
+DigitalOut digOut(p30);
+DigitalIn digIn(p21);
+ 
+int main() {
+     int value = 0; 
+     while(1) {
+     if (digIn) {
+            value = 1;
+        } else {
+            value = 0;
+        }
+    
+  
+    // loop forever
+    
+      //call assembly language function to control LED1
+      my_asm(value);
+      //API function to control LED4
+     // myled4 = value;
+      // flip value and wait
+     
+      wait(0.2);
+    }
+}
\ No newline at end of file