Documentation/ReleaseNotes/NuttX-5.0 - nuttx - Git at Google

 NuttX-5.0
 ---------

 This is 47th release of NuttX and the successor to nuttx-4.14. This
 major revision number has been incremented to indicate that an
 incompatibility with previous nuttx releases has been introduced.
 This version adopts standard fixed width integer names as specified
 by the ANSI C99 standard. The core logic of NuttX is older than
 that standard and did not conform to it.

 If you have applications running on NuttX-4.14, those applications
 should continue to build and execute without problem on NuttX-5.0.
 However, if you have device drivers or other OS-internal logic, you
 will probably have to make some minor changes to your code to use
 this version. Below is a summary of those changes:

 * If you include sys/types.h to get the non-standard, fixed width
 integer types (uint32, uint16, ubyte, etc.), that is no longer
 necessary.
 * Instead, you will need to include stdint.h where the new fixed
 width integer types are defined (uint32_t, uint16_t, uint8_t, etc).
 * You will have to change all occurrences of the following types:

 uint32 -> uint32_t
 uint16 -> uint16_t
 ubyte -> uint8_t
 uint8 -> uint8_t
 sint32 -> int32_t
 sint16 -> int16_t
 sint8 -> int8_t

 * In addition, the non-standard type 'boolean' must replaced with
 the standard type 'bool'. The type definition for 'bool' is in
 stdbool.h

 This change in typing caused small changes to many, many files. It
 was verified that all configurations in the release still build
 correctly (other than the SDCC-based configurations). Regression
 testing was performed on a few configurations, but it is possible
 that minor build issues still exist. (If you encounter any, please
 let me know and I will help you to fix them.)

 In the course of the regression testing, several important bugs
 unrelated to the type changes were found and corrected.

 * Fixed an important error in the RX FIFO handling logic of the
 LM3S6918 Ethernet driver.
 * Corrected the handling of TCP sequence numbers in the TCP stack.
 * And other less important bugs as detailed in the ChangeLog.

 The primary focus of this release was standards compatibility, but
 a few new features were added including a (1) Flash Translation
 Layer (FTL) that will support filesystems on a FLASH device and (2)
 partial ports for the STM32F107VC and HCS12 C9S12NE64 MCUs. Those
 ports are very incomplete as of this writing.

 This tarball contains a complete CVS snapshot from December 21, 2009
	NuttX-5.0
	---------

	This is 47th release of NuttX and the successor to nuttx-4.14. This
	major revision number has been incremented to indicate that an
	incompatibility with previous nuttx releases has been introduced.
	This version adopts standard fixed width integer names as specified
	by the ANSI C99 standard. The core logic of NuttX is older than
	that standard and did not conform to it.

	If you have applications running on NuttX-4.14, those applications
	should continue to build and execute without problem on NuttX-5.0.
	However, if you have device drivers or other OS-internal logic, you
	will probably have to make some minor changes to your code to use
	this version. Below is a summary of those changes:

	* If you include sys/types.h to get the non-standard, fixed width
	integer types (uint32, uint16, ubyte, etc.), that is no longer
	necessary.
	* Instead, you will need to include stdint.h where the new fixed
	width integer types are defined (uint32_t, uint16_t, uint8_t, etc).
	* You will have to change all occurrences of the following types:

	uint32 -> uint32_t
	uint16 -> uint16_t
	ubyte -> uint8_t
	uint8 -> uint8_t
	sint32 -> int32_t
	sint16 -> int16_t
	sint8 -> int8_t

	* In addition, the non-standard type 'boolean' must replaced with
	the standard type 'bool'. The type definition for 'bool' is in
	stdbool.h

	This change in typing caused small changes to many, many files. It
	was verified that all configurations in the release still build
	correctly (other than the SDCC-based configurations). Regression
	testing was performed on a few configurations, but it is possible
	that minor build issues still exist. (If you encounter any, please
	let me know and I will help you to fix them.)

	In the course of the regression testing, several important bugs
	unrelated to the type changes were found and corrected.

	* Fixed an important error in the RX FIFO handling logic of the
	LM3S6918 Ethernet driver.
	* Corrected the handling of TCP sequence numbers in the TCP stack.
	* And other less important bugs as detailed in the ChangeLog.

	The primary focus of this release was standards compatibility, but
	a few new features were added including a (1) Flash Translation
	Layer (FTL) that will support filesystems on a FLASH device and (2)
	partial ports for the STM32F107VC and HCS12 C9S12NE64 MCUs. Those
	ports are very incomplete as of this writing.

	This tarball contains a complete CVS snapshot from December 21, 2009