Hello Yao,

for mutexes, the RTEMS_BINARY_SEMAPHORE | RTEMS_PRIORITY | RTEMS_INHERIT_PRIORITY are the right semaphores (please note that they are recursive). For task/interrupt synchronization you can use RTEMS_SIMPLE_BINARY_SEMAPHORE | RTEMS_FIFO.

--
Sebastian Huber, embedded brains GmbH

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