040000 tree 185f61b1f9adef2cffb0959d13dfebf5c3fa4cc3	dummy
040000 tree 316e68a32749e18a81f5fa5fc7fede9d8b5f663f	freertos
040000 tree ba6ef22acf90940e801788115bca1a6e28d45bbd	linux
040000 tree 6801d8ef7d903c14a91bd41d1d6012dbb23d0a18	mynewt
040000 tree b9ecca6ddb35bbea42917e6cf137c27f5949b8b6	riot