58 lines
2.4 KiB
Plaintext
58 lines
2.4 KiB
Plaintext
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NuttX-5.0
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---------
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This is 47th release of NuttX and the successor to nuttx-4.14. This
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major revision number has been incremented to indicate that an
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incompatibility with previous nuttx releases has been introduced.
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This version adopts standard fixed width integer names as specified
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by the ANSI C99 standard. The core logic of NuttX is older than
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that standard and did not conform to it.
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If you have applications running on NuttX-4.14, those applications
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should continue to build and execute without problem on NuttX-5.0.
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However, if you have device drivers or other OS-internal logic, you
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will probably have to make some minor changes to your code to use
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this version. Below is a summary of those changes:
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* If you include sys/types.h to get the non-standard, fixed width
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integer types (uint32, uint16, ubyte, etc.), that is no longer
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necessary.
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* Instead, you will need to include stdint.h where the new fixed
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width integer types are defined (uint32_t, uint16_t, uint8_t, etc).
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* You will have to change all occurrences of the following types:
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uint32 -> uint32_t
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uint16 -> uint16_t
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ubyte -> uint8_t
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uint8 -> uint8_t
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sint32 -> int32_t
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sint16 -> int16_t
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sint8 -> int8_t
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* In addition, the non-standard type 'boolean' must replaced with
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the standard type 'bool'. The type definition for 'bool' is in
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stdbool.h
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This change in typing caused small changes to many, many files. It
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was verified that all configurations in the release still build
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correctly (other than the SDCC-based configurations). Regression
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testing was performed on a few configurations, but it is possible
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that minor build issues still exist. (If you encounter any, please
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let me know and I will help you to fix them.)
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In the course of the regression testing, several important bugs
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unrelated to the type changes were found and corrected.
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* Fixed an important error in the RX FIFO handling logic of the
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LM3S6918 Ethernet driver.
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* Corrected the handling of TCP sequence numbers in the TCP stack.
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* And other less important bugs as detailed in the ChangeLog.
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The primary focus of this release was standards compatibility, but
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a few new features were added including a (1) Flash Translation
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Layer (FTL) that will support filesystems on a FLASH device and (2)
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partial ports for the STM32F107VC and HCS12 C9S12NE64 MCUs. Those
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ports are very incomplete as of this writing.
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This tarball contains a complete CVS snapshot from December 21, 2009
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