caeb1757f6
To simplify processing, the existed SBI function code is just invoking the ecall and return the error value. This omits potential return value in "a1", which is defined in SBI doc. Add the "sbiret" struct so it can handle all the return value. In addition, there are some minor improvement: 1. move the SBI related interface to a separate file to make it clean. 2. add all necessary SBI ecall interface macro until version 2.0. 3. add an utilty function to convert sbi error numner to standard error number. Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).
For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.
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Documentation
You can find the current NuttX documentation on the Documentation Page.
Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.
The old NuttX documentation is still available in the Apache wiki.
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NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.
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