040000 tree 2e640198c15b269c50942dba509f3fb98d0fc144	cmsis_rtos_v1
040000 tree d34741295220749cefefd645d4919154d9ae7257	cmsis_rtos_v2
100644 blob bf282e945477ca5e995cb97c425878d105b1ddae	portability.rst