5e7c0976fa
This was a small hole in the logic that handles initializing the lookahead buffer. To imitate exhaustion (so the block allocator will trigger a scan), the lookahead buffer is rewound a full lookahead and set up to look like it is exhausted. However, unlike normal allocation, this rewind was not kept aligned to a multiple of the scan size, which is limited by both the lookahead buffer and the total storage size. This bug went unnoticed for so long because it only causes problems when the block device is both: 1. Not aligned to the lookahead buffer (not a power of 2) 2. Smaller than the lookahead buffer While this seems like a strange corner case for a block device, this turned out to be very common for internal flash, especially when a handleful of blocks are reserved for code. |
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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 | ||
| 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 webiste 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.