Prep for 4.14 release
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2296 42af7a65-404d-4744-a932-0658087f49c3
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<tr align="center" bgcolor="#e4e4e4">
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<td>
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<h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
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<p>Last Updated: December 1, 2009</p>
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<p>Last Updated: December 2, 2009</p>
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</td>
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</table>
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@ -729,10 +729,10 @@
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</tr>
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</table>
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<p><b>nuttx-0.4.12</b>.
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<p><b>nuttx-4.14</b>.
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<p>
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This 45<sup>th</sup> release of NuttX was made on November 4, 2009 and is available for download from the
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This 46<sup>th</sup> release of NuttX was made on December 2, 2009 and is available for download from the
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<a href="http://sourceforge.net/project/showfiles.php?group_id=189573">SourceForge</a> website.
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The change log associated with the release is available <a href="#currentrelease">here</a>.
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Unreleased changes after this release are available in CVS.
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</p>
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<p>
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The release extends the support for the STMicro STM32 microcontroller.
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Minimul support for the STM3210E-EVAL development board based around the STM32F103ZET6
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MCU was released in NuttX-0.4.12.
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This release adds:
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Minimal support for the STM3210E-EVAL development board based around the STM32F103ZET6
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MCU was released in NuttX-0.4.12 and extended in Nuttx-0.4.13 to include initial USB support.
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This completes the STM32F103ZET6 support and adds:
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</p>
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<p>
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New Generic RTOS Features:
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<ul>
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<li>A simple interface definition to support some FLASH, EEPROM, NVRAM, etc. devices.</li>
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<li>Verified SPI operation using driver for SPI based FLASH parts M25P64 and M25P128.</li>
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<li>Improved Cortex-M3 context switching.
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This should improve context switching performance be 2x in certain cases.</li>
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<li>Added a USB device-side driver for the STM32.
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This is an early release of a very complex driver; some bugs are expected.</li>
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<li>The USB driver has been verified against the USB serial device class driver.
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There is at least one known outstanding issue (see the full bug description in
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the TODO list).</li>
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<li>Added generic support that can be included in any block driver to provide
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read-ahead buffering and write buffering for improved driver performance.</li>
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<li>Added a generic worker thread that can used to defer processing from an
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interrupt to a task.</li>
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<li>Defined a generic SD/SDIO interface can can be bound to a MMC/SD or SDIO
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driver to orovide SDIO support.</li>
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<li>Implemented a an SDIO-based MMC/SD driver using this new SDIO interface</li>
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</ul>
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</p>
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<p>
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This release also corrects some important bugs in the early STM32 release:
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New STM32-specific Features:
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<ul>
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<li>Fixed several errors the prevented operation of NuttX on an STM32 development
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board using USART2 as the serial console.</li>
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<li>Fixed and optimization-dependent race condition in the clock initialization.</li>
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<li>Fixed a critical bug in the interrupt control logic that could cause interrupt
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operations to failed used for interrupts in a certain range.</li>
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<li>Add support to configure an STM32 input GPIO to generate an EXTI interrupt.</li>
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<li>Added support for buttons on the STM3210E-EVAL board.</li>
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<li>Implemented an STM32 version of the common the SDIO interface.</li>
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<li>Added a configuration to exercise the STM32 with the USB mass storage
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device class example.</li>
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</ul>
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</p>
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<p>
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This release also corrects some important bugs in the earlier STM32 releases:
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<ul>
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<li>Correct error handling in the mount() logic.</li>
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<li> Fixed several STM32 DMA-related issues. Integrated and debugged STM32 DMA
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functionality that was added in 0.4.12.</li>
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<li>Fixed several bugs in the STM32 USB device-side driver.</li>
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</ul>
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</p>
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<p>
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DMA and external memory support are included in the 0.4.13 release, but is not yet tested.
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This basic STM32 port will be further extended in the 0.4.14 NuttX release to include
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MicroSD support and verified USB mass storage class support.
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NOTE: This version, 4.14, is equivalent to what would have been called 0.4.14
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to follow 0.4.13. The zero has been eliminated from the front of the version
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number to avoid confusion about the state of development: Some have interpreted
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the leading zero to mean that the code is in some way unstable. That was not
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the intent. Beginning in January 2010, I will switch to the 2010.nn versioning
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as many others have done to avoid such confusion.
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</p>
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<table width ="100%">
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@ -990,12 +1003,10 @@
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<b>STATUS:</b>
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The basic STM32 port was released in NuttX version 0.4.12. The basic port includes boot-up
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logic, interrupt driven serial console, and system timer interrupts.
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The 0.4.13 release added support for SPI, serial FLASH, and USB device.
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The 0.4.13 release added support for SPI, serial FLASH, and USB device.;
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The 4.14 release added support for buttons and SDIO-based MMC/SD and verifed DMA support.
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Verified configurations are available for NuttX OS test, the NuttShell (NSH) example,
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and a USB serial device class.
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DMA and external memory support are included in the 0.4.13 release, but is not yet tested.
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This basic STM32 port will be further extended in the 0.4.14 NuttX release to include
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MicroSD support and verified USB mass storage class support.
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the USB serial device class, and the USB mass storage device class example.
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</p>
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<p>
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<b>Development Environments:</b>
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@ -1534,67 +1545,7 @@ Other memory:
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</table>
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<ul><pre>
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nuttx-0.4.13 2009-11-04 Gregory Nutt <spudmonkey@racsa.co.cr>
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* include/nuttx/mtd.h. Added a simple interface definition to support some
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FLASH, EEPROM, NVRAM, etc. devices.
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* driver/mtd/m25px.c. Added a driver for SPI based FLASH parts M25P64 and M25P128.
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* configs/stm3210e-eval/usbserial. Add a USB serial configuration for the STM32.
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Depends on the STM32 USB driver.
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* arch/arm/src/cortexm3/up_switchcontext.S & up_svccall.c. Made an improvement
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to context switching. There are two types of context switches: interrupt
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context switches and background/user context switches. This change should
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improve the performance of those background/user context switches by a factor
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of about two.
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* arch/arm/src/stm32/ - fix several typos in the serial logic. It turns out
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that these typose don't make any difference as long as you use only one
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serial port and all uarts are configured the same. But the typos are bugs
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waiting to happen in any other configuration.
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* arch/arm/src/stm32/ - You have to configure CTS/RTS function pins for USART
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2 and USART 3 even if you are not using flow control.
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* arch/arm/src/stm32/stm32_usbdev.c - Added a USB device-side driver for the
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STM32. NOTE: This is an early release of the USB driver. There is at least
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one known issue. The examples/usbserial test only executes correctly under
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certain conditions (see the full bug description in the TODO list).
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* arch/arm/src/stm32/stm32_rcc.c - Fixed an error in clock initialization.
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On some boards (none of mine), the HSE (high speed external clock) delay
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loop times out if the optimization level is high. The STM32 then falls
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back to the HSI (internal clock), and the system clock is too slow by a
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factor of 11.1%. This was fixed by simply add the volatile storage class
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to the timeout loop counter
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* arch/arm/src/stm32/stm32_irq.c - Fixed a critical bug in the interrupt
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control logic. The wrong register was being used for interrupts in a
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certain range. Worked fine until you try to use an interrupt in that
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range!
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pascal-0.1.2 2008-02-10 Gregory Nutt <spudmonkey@racsa.co.cr>
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* Add logic to build and link with the ZDS-II toolchain
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use with the z16f.
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* Make sure that POFF header structures are aligned
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* Standardized POFF file format to big-endian
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* Break up large switch statements to lower complexity
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and eliminate a compiler bug
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* Changes so that runtime compiles with SDCC.
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buildroot-0.1.7 2009-06-26 <spudmonkey@racsa.co.cr>
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* configs/avr-defconfig-4.3.3: Added support for AVR to support a NuttX
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port of the ATmega128.
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* toolchain/nxflat: Added logic to build NuttX NXFLAT binding support tools
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* toolchain/genromfs: Added support for the genromfs tool
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</pre></ul>
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<table width ="100%">
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<tr bgcolor="#e4e4e4">
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<td>
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<a name="pendingchanges">Unreleased Changes</a>
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</td>
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</tr>
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</table>
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<ul><pre>
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nuttx-4.14 2009-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
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nuttx-4.14 2009-12-02 Gregory Nutt <spudmonkey@racsa.co.cr>
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* arch/arm/src/stm32/stm32_gpio.c - Add support for configure an input GPIO
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to generate an EXTI interrupt.
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@ -1628,9 +1579,38 @@ nuttx-4.14 2009-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
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driver: (1) Need to disconnect after reset received, (2) Status setup
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to recover from stall on TX endpoint.
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pascal-0.1.3 2009-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
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pascal-0.1.2 2008-02-10 Gregory Nutt <spudmonkey@racsa.co.cr>
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buildroot-0.1.8 2009-xx-xx <spudmonkey@racsa.co.cr>
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* Add logic to build and link with the ZDS-II toolchain
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use with the z16f.
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* Make sure that POFF header structures are aligned
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* Standardized POFF file format to big-endian
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* Break up large switch statements to lower complexity
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and eliminate a compiler bug
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* Changes so that runtime compiles with SDCC.
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buildroot-0.1.7 2009-06-26 <spudmonkey@racsa.co.cr>
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* configs/avr-defconfig-4.3.3: Added support for AVR to support a NuttX
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port of the ATmega128.
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* toolchain/nxflat: Added logic to build NuttX NXFLAT binding support tools
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* toolchain/genromfs: Added support for the genromfs tool
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</pre></ul>
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<table width ="100%">
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<tr bgcolor="#e4e4e4">
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<td>
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<a name="pendingchanges">Unreleased Changes</a>
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</td>
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</tr>
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</table>
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<ul><pre>
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nuttx-2010.1 2010-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
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pascal-2010.1 2010-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
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buildroot-2010.1 2010-xx-xx <spudmonkey@racsa.co.cr>
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</pre></ul>
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<table width ="100%">
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