91 lines
3.2 KiB
Plaintext
91 lines
3.2 KiB
Plaintext
README.txt
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^^^^^^^^^^
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This is the README file for the NuttX port to the ZiLog ZNEO MCU.
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ZDS-II Compiler Versions
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^^^^^^^^^^^^^^^^^^^^^^^^
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4.10.2
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The ZDS-II version 4.10.2 will not compile NuttX. It reports "internal
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errors" on some of the files. Upgrades to ZDS-II are available for
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download from the Zilog website: http://www.zilog.com/software/zds2.asp
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4.11.0
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NuttX compiles correctly with the newer 4.11.0 version of the ZDS-II
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toolchain. However, I have found a few issues:
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- The code will not run without the -reduceopt option. There is,
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apparently, some optimization related issue. This issue has not
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been analyzed as of this writing.
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- Not all NuttX logic will not run with the -regvars option. There is
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at least one failure that has been reported to ZiLOG as incident 81400.
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- The Pascal add-on interpreter includes a large switch statement and
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exposes another compiler problem. This is reported as incident 81459.
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4.11.1
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As of this writing (30 September 2010), the latest release of ZDS-II for the
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ZNEO is 4.11.1. It is unknown if this release includes fixes for incidents
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81400 and 81459 or not. It is unknown if the code will run without -reduceopt
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either. (Basically, it compiles with 4.11.1, but is untested with that version).
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If you use any version of ZDS-II other than 4.11.1 or if you install ZDS-II
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at any location other than the default location, you will have to modify
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two files: (1) configs/z16f2800100zcog/*/setenv.sh and (2)
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configs/z16f2800100zcog/*/Make.defs. Simply edit these two files, changing
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4.11.1 to whatever.
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Issues
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^^^^^^
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There are several, important open issues with the ZNEO port (8 as of this writing).
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See the TODO file in the top-level NuttX directory. One of these should be
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mentioned here because it causes a failure to compile Nuttx:
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Description: The file drivers/mmcsd/mmcsd_sdio.c generates an internal compiler
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error like:
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mmcsd\mmcsd_sdio.c
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Internal Error(0503) On line 2524 of "MMCSD\MMCSD_SDIO.C"
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File <c3>, Args(562,46)
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Status: Open. Recommended workaround: remove mmcsd_sdio.c from
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drivers/mmcsd/Make.defs. There is no SDIO support for the Z16 anyway
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Priority: Low
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This is bug in ZDS-II. It was discovered in version 4.11.0 and still exists
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in version 4.11.1.
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Configuration Subdirectories
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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- source/ and include/
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These directories contain common logic for all z16f2800100zcog
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configurations.
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Variations on the basic z8f162800100zcog configuration are maintained
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in subdirectories. To configure any specific configuration, do the
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following steps:
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cd <nuttx-top-directory>/tools
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./configure.sh z16f2800100zcog/<sub-directory>
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cd <nuttx-top-directory>
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make
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Where <sub-directory> is the specific board configuration that you
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wish to build. The following board-specific configurations are
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available:
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- ostest
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This builds the examples/ostest application for execution from FLASH.
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See examples/README.txt for information about ostest.
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- pashello
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Configures to use examples/pashello for execution from FLASH
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See examples/README.txt for information about pashello.
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Check out any README.txt files in these <sub-directory>s.
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