099d0500ef
There are scenarios where putc is called within a critical section, e.g to log ASSERTs in early initialization code. The interrupts being disabled here prevents the handlers for the UARTE from executing. This breaks the tx_in_progress flag based approach. The tx_in_progress never gets reset. Poll on the TXDRDY instead. It can be recreated with a simple program as shown here: *************** Current Behavior **************** ++ MbedOS Error Info ++ Error Status: 0x80FF0100 Code: 256 Module: 255 Error Message: F ************** With Fix ************************* ++ MbedOS Error Info ++ Error Status: 0x80FF0100 Code: 256 Module: 255 Error Message: Fatal Run-time error Location: 0x2C0A9 Error Value: 0x0 Current Thread: Id: 0x20005520 Entry: 0x30EBF StackSize: 0x1000 StackMem: 0x20004520 SP: 0x20005490 For more info, visit: https://armmbed.github.io/mbedos-error/?error=0x80FF0100 -- MbedOS Error Info -- nrf failure at .\main.cpp:22 *************************************************** |
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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.
Documentation
For more information about Mbed OS, please see our published documentation. It includes published Doxygen for our APIs, step-by-step tutorials, porting information and background reference materials about our architecture and tools.
To contribute to this documentation, please see the mbed-os-5-docs repo.