![](/media/cache/group/logo-cachanx.jpg.50x50_q85.jpg)
Example using semaphore in ISR
Dependencies: IHM_V2
Purpose: Simple application example with 1 thread triggered by a interrupt service routine (ISR) through a semaphore. Target: L432KC / Nboard (from IUT-Cachan) Tested: YES (2019-01-09) Author: Jacques-Olivier Klein - IUT de CACHAN Date: 2018-02-10 rev. 2019-01-09 OS_STACK_SIZE=4096 Libraries: mbed-os rev5345:c966348(03jan2019) + IHMV2 (from IUT-Cachan) rev6:ad91067
main.cpp
- Committer:
- jacquesolivierklein
- Date:
- 2019-01-09
- Revision:
- 28:be81ea276c3a
- Parent:
- 27:edb6c6685907
File content as of revision 28:be81ea276c3a:
// Title : mbed-os-isr-semaphore // Author: Jacques-Olivier Klein - IUT de CACHAN // Date: 2018-02-10 - rev. 2019-01-06 #include "mbed.h" #include "IHM.h" IHM ihm; DigitalOut L0 (PB_3) ; // led L0 DigitalOut L1 (PA_7) ; // led L1 InterruptIn BP0_Interrupt(PA_9); void thread_Semaphore(); void isrBP0 (); Thread thread_waiting_for_semaphore (osPriorityNormal,OS_STACK_SIZE );; Semaphore mysemaphore(0); int main(void) { ihm.LCD_clear(); ihm.LCD_printf("irq-semaphore-%s %s",__DATE__,__TIME__); printf("mbed-os-irq-semaphore-%s %s\n\r",__DATE__,__TIME__); printf("DEFAULT_STACK_SIZE:%d\n\r", OS_STACK_SIZE); BP0_Interrupt.mode(PullUp); thread_waiting_for_semaphore.start(thread_Semaphore); BP0_Interrupt.fall(&isrBP0); while(1){ L0=!L0; printf("* [pid-%d]Main \n\r",osThreadGetId()); wait(0.200); } } void isrBP0 (){ mysemaphore.release(); } void thread_Semaphore(){ while(1){ mysemaphore.wait(); L1=!L1; printf(" * [pid-%d]Semaphore \n\r",osThreadGetId()); } }