Mbed Blog

Mbed OS 5.7.3 released

We are pleased to announce the Mbed OS 5.7.3 release is now available. This is the latest patch release based on the feature set introduced by Mbed OS 5.7.

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Share your Github-hosted code

We know that it’s common to keep Mbed programs in other source control systems, and based on feedback from many of you in the developer survey earlier this year we decided it was high time to allow you to share your code directly from GitHub. We’ve added a new option that allows you to do just this. Your code is hosted in GitHub, but is listed and searchable alongside Mbed-hosted repositories on the Code page and your My repositories page. GitHub-hosted code can be imported directly into the Online Compiler or with Mbed CLI.

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Mbed OS 5.7.2 released

We are pleased to announce the Mbed OS 5.7.2 release is now available. This is the latest patch release based on the feature set introduced by Mbed OS 5.7.

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Reducing memory usage with a custom printf and newlib-nano

We’ve blogged about memory optimization before: Reducing memory usage by tuning RTOS configuration, Optimizing memory usage in Mbed OS 5.2 and Where did my flash go? Visualizing linker statistics. Mbed OS also supports runtime memory tracing and runtime memory statistics.

Both flash memory and RAM are limited on most microcontrollers, so reducing the memory footprint of your application can help you squeeze in more features or reduce cost. In this blog post we'll look at making Mbed OS 5 applications smaller, first by replacing standard I/O calls with a smaller implementation, and then by switching the whole standard library. All numbers in this post are based on Mbed OS 5.6.6 and GCC 6.3.1, and verified on NUCLEO-F401RE.

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Mbed OS 5.7.1 released

We are pleased to announce the Mbed OS 5.7.1 release is now available. This is the latest patch release based on the feature set introduced by Mbed OS 5.7.

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LittleFS - A high-integrity embedded file system

Having a small and resilient file system is crucial for many IoT devices. But utilizing the file system and pairing it with the correct storage technology such as external flash or SD cards can be difficult. Mbed OS is making it easy to add file system support by providing a wide portfolio of file systems. Mbed OS 5.7 supports both a FAT file system and introduces a new high-integrity embedded file system. This high-integrity file system is small, power-cut resilient and has wear-leveling support for flash chips that do not have their own wear levelling controller.

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Mbed OS 5.7 released: Focus on robustness, connectivity and ease of use


The Arm Mbed OS 5.7.0 release helps to further simplify the Internet of Things (IoT) and embedded product development with the addition of several new features, such as the high-integrity embedded file system, which provides power loss resilient operation and maximizes the life of the external memory block device by implementing wear leveling techniques. The release also includes an open-source mesh networking stack, which is IPv6, 6LoWPAN and one of the only two open-source certified Thread networking stacks. This release also continues our efforts to add comprehensive documentation for Mbed OS. Our ongoing efforts in this area include adding documentation about contributing and using our platform, drivers, RTOS, connectivity and storage APIs, as well as information about our tools. This release also includes improvements to the user experience of our documentation.

In addition, this release contains many minor fixes and enhancements and brings support for 103 target development boards. In the release note below, we summarize some of the key updates to Mbed OS that are part of the Mbed OS 5.7.0 release.

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Differences in documentation to match the evolving Mbed Ecosystem

"If it's not documented, it didn't happen," is a mantra often heard in the Arm office these days. That's because documentation is important to us at Arm. Because documentation is so important, the Mbed OS 5.6 release included dramatic improvements to our Mbed OS documentation to better serve our users. These improvements include a new documentation site and engine, a new documentation structure and new content.

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Built with Mbed - Gaming with Pokitto

A big gray box on a desk. A bulky display next to it, gray text on a blue background. A child in front of it, frantically typing commands on the keyboard. Then the wonderful sense of excitement when the computer responds… "Hello world". For many of us, this was not only how we started programming, but also how we became developers. Naturally, we'd want to instill this feeling into the next generation.

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Adding a Visual Studio Code exporter

Visual Studio Code, Microsoft's new cross-platform IDE, is gaining a lot of momentum. In the 2017 Stack Overflow Developer Survey it ranked in the top five for most popular developer environment for both web and desktop developers. Unfortunately, the survey did not have numbers on embedded developers - but its popularity is definitely on the rise in the Mbed offices, thanks to the excellent C/C++ support and the built-in support for visual debugging through GDB.

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