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uVisor doesn't set the PSP of the target thread. The RTOS sets the PSP of the target thread from the target thread's TCB. However, when interrupts of higher priority than PendSV happen between the call to uVisor to switch boxes, and the RTOS setting PSP, the uVisor vIRQ interrupt handler will attempt to use an invalid PSP (the PSP from before the box and thread switch). This leads to a crash. Make box and thread switching atomic by disabling interrupts immediately before the box switching until immediately after the new PSP is set. |
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| .github | ||
| TESTS | ||
| cmsis | ||
| drivers | ||
| events | ||
| features | ||
| hal | ||
| platform | ||
| rtos | ||
| targets | ||
| tools | ||
| .gitattributes | ||
| .gitignore | ||
| .pylintrc | ||
| .travis.yml | ||
| CONTRIBUTING.md | ||
| DOXYGEN_FRONTPAGE.md | ||
| Jenkinsfile | ||
| LICENSE | ||
| README.md | ||
| doxygen_options.json | ||
| mbed.h | ||
| requirements.txt | ||
README.md
ARM mbed OS
mbed OS is an open-source embedded operating system designed for the "things" in the Internet of Things (IoT). mbed OS includes the features you need to develop a connected product using an ARM Cortex-M microcontroller.
mbed OS provides a platform that includes:
- Security foundations.
- Cloud management services.
- Drivers for sensors, I/O devices and connectivity.
mbed OS is modular, configurable software that you can customize it to your device and to reduce memory requirements by excluding unused software.
Release Notes
The Release Notes detail the current release and previous versions.
Continuous Integration Status
We run continuous integration on all of our branches and pull requests to verify the stability of mbed OS. The following are the Travis CI indicators for mbed OS.
- Master branch
- Latest release
Getting Started for Developers
You need mbed CLI to build mbed OS. For more details, read the mbed OS Handbook.
Getting Started for Contributors
We have a Contributing and Publishing Guide in the mbed OS Handbook.