CMSIS_5/CMSIS/RTOS2/RTX/Template/Events.c

#include "cmsis_os2.h"                                           // CMSIS RTOS header file

/*----------------------------------------------------------------------------
 *  Event Flags creation & usage
 *---------------------------------------------------------------------------*/

void Thread_EventSender   (void *argument);                   // thread function 1
void Thread_EventReceiver (void *argument);                   // thread function 2
osThreadId_t tid_Thread_EventSender;                                // thread id 1
osThreadId_t tid_Thread_EventReceiver;                                // thread id 2

#define MSGQUEUE_OBJECTS      16                                // number of Message Queue Objects

typedef struct {                                                // object data type
  uint8_t Buf[32];
  uint8_t Idx;
} MEM_BLOCK_t;

typedef struct {                                                // object data type
  uint8_t Buf[32];
  uint8_t Idx;
} MSGQUEUE_OBJ_t;


osEventFlagsId_t evt_id;                                      // message queue id

#define FLAGS_MSK1 0x00000001ul

int Init_Events (void)
{
  tid_Thread_EventSender = osThreadNew (Thread_EventSender, NULL, NULL);
  if (tid_Thread_EventSender == NULL) {
    return(-1);
  }
  tid_Thread_EventReceiver = osThreadNew (Thread_EventReceiver, NULL, NULL);
  if (tid_Thread_EventReceiver == NULL) {
    return(-1);
  }

  return(0);
}

void Thread_EventSender (void *argument)
{
	evt_id = osEventFlagsNew(NULL);
  while (1) {    
    osEventFlagsSet(evt_id, FLAGS_MSK1);
    osThreadYield ();                                           // suspend thread
  }
}

void Thread_EventReceiver (void *argument)
{
  uint32_t  flags;

  while (1) {
    flags = osEventFlagsWait (evt_id,FLAGS_MSK1,osFlagsWaitAny, osWaitForever);
    //handle event

  }
}