Jose Rios
A sleep (or deepSleep) example with button interrupt wakeup
Revision 0:4d80b159d444, committed 2014-09-08
- Comitter:
- jose_23991
- Date:
- Mon Sep 08 17:41:39 2014 +0000
- Commit message:
- Version 1.0
Changed in this revision
| 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 |
diff -r 000000000000 -r 4d80b159d444 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Sep 08 17:41:39 2014 +0000
@@ -0,0 +1,38 @@
+#include "mbed.h"
+
+InterruptIn event_button(USER_BUTTON); // Create the button event object
+volatile bool go_to_sleep = false; // Volatile variable to make the system sleep
+
+void ISR_pressed() // ISR for the button press
+{
+ printf("Button pressed\n"); // Show that the button has pressed
+ go_to_sleep = !go_to_sleep; // Toogle the sleep state
+ event_button.disable_irq(); // Disable the interrupt request
+}
+
+int main()
+{
+ int i = 0;
+
+ event_button.mode(PullUp); // Setup the internall pull-up resistor
+ event_button.fall(&ISR_pressed); // Set the ISR associated to event fall (push the button)
+
+ while(1)
+ {
+ if(go_to_sleep)
+ {
+ printf("%d: Entering sleep (press user button to resume)\n", i);
+
+ event_button.enable_irq(); // Enable the interrupt request
+ //sleep(); // Enter Low Power Mode
+ deepsleep(); // Enter Low Power Mode (deep)
+ wait_ms(200); // Wait 200ms for debounce
+ event_button.enable_irq(); // Enable the interrupt request
+ }
+ else
+ {
+ printf("%d: Running\n", i); // Show the counter
+ }
+ i++;
+ }
+}
diff -r 000000000000 -r 4d80b159d444 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Sep 08 17:41:39 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/9327015d4013 \ No newline at end of file