Diff: main.cpp

Revision:

0:5d08506cf3e3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Nov 24 18:07:25 2016 +0000
@@ -0,0 +1,22 @@
+#include "mbed.h"
+InterruptIn button(p30); // Interrupt on digital input p30
+DigitalOut led1(LED1); // digital out to onboard LED1
+Timer debounce; // define debounce timer
+LocalFileSystem local("local"); // define local file system
+void toggle(void); // function prototype
+
+int main()
+{
+    debounce.start(); // start debounce timer
+    button.rise(&toggle); // attach the toggle function to the rising edge
+}
+void toggle()   // perform toggle if debounce time has elapsed
+{
+    if (debounce.read_ms()>200) {
+        led1=!led1; // toggle LED
+        FILE* Logfile = fopen ("/local/log.txt","a"); // open file for appending
+        fprintf(Logfile,"time=%.3fs: setting led=%d\n\r",debounce.read(),led1.read());
+        fclose(Logfile); // close file
+        debounce.reset(); // reset debounce timer
+    }
+}
\ No newline at end of file