The Apache Software Foundation has recently released version 0.9 Apache Mynewt open source real-time operating systems for micro-controllers under… an Apache 2.0 license. The RTOS works on STMicro STM32 Cortex-M4, and Arduino Zero / M0 Cortex-M0 boards, but they’ve also implemented the first open source Bluetooth Low Energy stack for MCUs, starting with support for Nordic Semi nRF52 Cortex-M4 and nRF51 Cortex-M1 evaluation boards, and acting as a replacement for Nordic SoftDevice Bluetooth Smart / LE solution.
The operating system competes with ARM mbed, the Zephyr Project, and RIoT, but the foundation claims it is the only one that’s both community driven and permissively licensed (Apache 2.0) project in the embedded space.
You can find more information and/or get started with the project on Apache Mynewt microsite.
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