17892cbbb9
Some low power tickers take multiple cycles of the low power clock to set a compare value. Because of this if the compare value is set twice back-to-back these implementations will block until that time has passed. This can cause system stability issues since interrupts are disabling for this time. To gracefully support this kind of hardware this patch adds code to prevent back-to-back writes to the hardware. It does this by recording the low power clock cycle of the initial write. If any writes come in too soon after this initial write the microsecond ticker is used to schedule the new write in the future when the hardware is ready to accept a new value. To enable this feature on a target the macro LOWPOWERTIMER_DELAY_TICKS must be set to the number of low power clock cycles that must elapse between writes to the low power timer. |
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| .github | ||
| TESTS | ||
| cmsis | ||
| drivers | ||
| events | ||
| features | ||
| hal | ||
| platform | ||
| rtos | ||
| targets | ||
| tools | ||
| .coveragerc | ||
| .gitattributes | ||
| .gitignore | ||
| .pylintrc | ||
| .travis.yml | ||
| CONTRIBUTING.md | ||
| DOXYGEN_FRONTPAGE.md | ||
| Jenkinsfile | ||
| LICENSE | ||
| LICENSE-BSD-3-Clause | ||
| README.md | ||
| doxyfile_options | ||
| doxygen_options.json | ||
| logo.png | ||
| mbed.h | ||
| requirements.txt | ||
README.md
Arm Mbed OS is an open source embedded operating system designed specifically for the "things" in the Internet of Things. It includes all the features you need to develop a connected product based on an Arm Cortex-M microcontroller, including security, connectivity, an RTOS and drivers for sensors and I/O devices.
Mbed OS provides a platform that includes:
- Security foundations.
- Cloud management services.
- Drivers for sensors, I/O devices and connectivity.
Release notes
The release notes detail the current release. You can also find information about previous versions.
Getting started for developers
We have a developer website for asking questions, engaging with others, finding information on boards and components, using an online IDE and compiler, reading the documentation and learning about what's new and what's coming next in Mbed OS.
Getting started for contributors
We also have a contributing and publishing guide that covers licensing, contributor agreements and style guidelines.