osSemaphoreid bsem;
osSemaphoreDef(bsem);
bsem = osSemaphoreCreate (osSemaphore(bsem), 1);
osSemaphoreWait (bsem, osWaitForever);
osSemaphoreid bsem;
osSemaphoreDef(bsem);
bsem = osSemaphoreCreate (osSemaphore(bsem), 1);
osSemaphoreWait (bsem, osWaitForever);