hobbielektronika / Mbed 2 deprecated 08_wakeup

LED blinking by using deepsleep() and WakeUp. A demo written by Erik Olieman, author the WakeUp class library. Link: https://developer.mbed.org/users/Sissors/code/WakeUp/

Dependencies:   WakeUp mbed

Files at this revision

API Documentation at this revision

Revision 0:50979b0f2f9e, committed 2016-01-07

Comitter:
icserny
Date:
Thu Jan 07 14:12:28 2016 +0000
Commit message:
First version

Changed in this revision

WakeUp.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WakeUp.lib	Thu Jan 07 14:12:28 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/Sissors/code/WakeUp/#49ca85e8822f

--- /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
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Jan 07 14:12:28 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/4336505e4b1c
\ No newline at end of file