Luigi Frunzio
/
BlinkButton2Sec
assignment
Revision 0:6b65e6a1f3ae, committed 2018-11-27
- Comitter:
- frunzl
- Date:
- Tue Nov 27 21:51:53 2018 +0000
- Commit message:
- assignment;
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
mbed-os.lib | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Tue Nov 27 21:51:53 2018 +0000 @@ -0,0 +1,38 @@ +#include "mbed.h" + +DigitalOut led1(LED1); +InterruptIn button(USER_BUTTON); +EventQueue queue(32 * EVENTS_EVENT_SIZE); +Thread t; + +volatile time_t first_seconds = 0; + +void fall_handler_thread_context(void) { + printf("rise_handler_thread_context in context %p\r\n", Thread::gettid()); + printf("firt_seconds: %d\n", first_seconds); + time_t seconds = time(NULL); + if (first_seconds != 0 && ((seconds - first_seconds) < 2)) { + led1 = !led1; + } + printf("seconds: %d\n", seconds); + first_seconds = seconds; +} + +void fall_handler_iterrupt_context(void) { + // Execute the time critical part first + + // The rest can execute later in user context (and can contain code that's not interrupt safe) + // We use the 'queue.call' function to add an event (the call to 'rise_handler_user_context') to the queue + queue.call(fall_handler_thread_context); +} + + +int main() { + // Start the event queue + t.start(callback(&queue, &EventQueue::dispatch_forever)); + printf("Starting in context %p\r\n", Thread::gettid()); + // The 'rise' handler will execute in IRQ context + button.fall(fall_handler_iterrupt_context); + // button.rise(queue.event(rise_handler)); + // The 'fall' handler will execute in the context of thread 't' +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Tue Nov 27 21:51:53 2018 +0000 @@ -0,0 +1,1 @@ +https://github.com/armmbed/mbed-os/#bf6f2c3c6434a6de9eb9511feffa5948b3d1f20f