Diff: main.cpp

Revision:

0:50979b0f2f9e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Jan 07 14:12:28 2016 +0000
@@ -0,0 +1,41 @@
+/** 08_wakeup
+ *
+ * The LED is "off" for 2 seconds (the target spends this interval in deepsleep() mode)
+ * then the LED is "on" for the other second. Awakening is arranged by using the WakeUp
+ * class library.
+ *
+ * Author: Erik Olieman
+ * Link: https://developer.mbed.org/users/Sissors/code/WakeUp/
+ * Minor modifications: I. Cserny
+ *
+ * A note about the implementation of the WakeUp library:
+ * ------------------------------------------------------
+ * The KL25z target board uses the same LPTMR for both WakeUp and for ticker generation.
+ * The WakeUp code is nice, and it will backup the old values when being set, and restore
+ * those after waking up, allowing you to continue using your ticker, and a ticker which
+ * was already set will continue again. However you are not allowed to set a new ticker
+ * after you already set WakeUp, since this will give clashes. Do you for whatever reason
+ * need to do it (for example you set WakeUp, and then you wake using an InteruptIn),
+ * you can disable the WakeUp timer and restore the ticker functionality by setting
+ * WakeUp for 0 seconds.
+ */
+
+#include "mbed.h"
+#include "WakeUp.h"
+
+DigitalOut myled(LED1);         //LED_RED
+
+int main() {
+    //The low-power oscillator can be quite inaccurate on some targets
+    //this function calibrates it against the main clock
+    WakeUp::calibrate();
+
+    while(1) {
+        myled = 1;              //Switch LED off        
+        WakeUp::set_ms(2000);   //Set wakeup time for 2 seconds
+        deepsleep();            //Enter deepsleep mode
+//-- zzZZ sleep here for 2 seconds -------------------        
+        myled = 0;              //Switch LED on after wakeup 
+        wait(1);                //Run state for 1 sec
+    }
+}
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