93f436ebe0
POSIX poll() provides a mechanism to attach a POLL_HUP event if the modem or device hangs up on you. POLL_HUP and POLL_OUT are mutually exclusive. We poll in the PPP_input() routine if the modem hung up. If it did we stop the data consumption, close PPP and go back to the driver for reserruction of AT parser and subsequent retries or application specific actions. This is achieved by attaching an interrupt to the DCD line of the modem. When DCD line goes high (off), we have lost the carrier. So we record an POLLHUP event using _poll_change(). |
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| LICENSE | ||
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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.