279 lines
9.6 KiB
Plaintext
279 lines
9.6 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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- Console output is on UART0.
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- NOTE: My board has a 20MHz crystal, but I have heard of other boards with
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18.432MHz crystals. If you board has a diff crystal installed, then
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modify the system frequency in include/board.h.
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Contents
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========
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- ZDS-II Compiler Versions
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- Patches
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- Serial Console
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- Selecting Configurations
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- Configuration Sub-directories
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ZDS-II Compiler Versions
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========================
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Version 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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Version 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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Version 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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Version 4.12.0
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Never tested
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Version 5.0.0
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Never tested
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Version 5.0.1
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On November 29, 2012, all of the z16f configurations were converted to use 5.0.1,
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but have not been verified on a running target.
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Paths were also updated that are specific to a 32-bit toolchain running on
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a 64 bit windows platform. Change to a different toolchain, you will need
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to modify the versioning in Make.defs and setenv.sh; if you want to build
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on a different platform, you will need to change the path in the ZDS binaries
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in those same files.
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Other Versions
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If you use any version of ZDS-II other than 5.0.1 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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5.0.1 to whatever.
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Patches
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=======
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A bug has been found in the ZDS-II toolchain version 5.0.1. a patch is
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available to work around the bug. A summary of the nature the bug and
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instructions for applying the patch follow.
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Parameters are passed different to variadic functions (i.e., functions
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that accept a varying number of parameters) than to regular functions. For
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most functions, parameters are passed in registers, beginning with R1. But
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for variadic functions, all parameters must be passed on the stack.
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The logic works correctly for global functions, local functions, and most
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function pointers. It does not work correctly for the case where a variadic
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function point is included within a structure. In that case, the caller
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inappropriately passes the parameters in registers; the receiver will
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attempt to recover the parameters from the stack and a failure then follows.
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This bug prevents the use of NSH with the ZNEO. However, a patch has been
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developed that works around the problem. That patch can be found at
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configs/z16f2800100zcog/tools/zneo-zdsii-5_0_1-variadic-func-fix.patch. In
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that directory is also a bash script that will apply that patch for you.
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The patch would be applied when NuttX is configured as follows:
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cd tools
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./configure.sh z16f2800100zcog/nsh
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cd ..
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. ./setenv.sh
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dopatch.sh
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make
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The patch can also be removed with:
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dopatch.sh -R
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See the section "Selecting Configurations" below.
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Serial Console
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==============
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By default, console output is on UART1 which corresponds to the DB9
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connector labelled CONSOLE.
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UART1 is also available on JP2:
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MCU PIN GPIO JP2
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Pin 86 TXD1 PD5 JP2 Pin 26
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Pin 87 RXD1 PD4 JP2 Pin 27
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Vcc JP2 Pin 59
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GND JP2 Pins 19, 39, 46, 48, 56
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Selecting Configurations
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========================
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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. You may also need to apply a path to NuttX before making.
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Please refer the the section "Patches" above"
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Configuration Sub-directories
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=============================
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source/ and include/
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--------------------
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These directories contain common logic for all z16f2800100zcog
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configurations.
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nsh
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---
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nsh:
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This configuration directory will built the NuttShell (NSH). See
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the NSH user manual in the documents directory (or online at nuttx.org).
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See also the README.txt file in the nsh sub-directory for information
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about using ZDS-II.
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NOTES:
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1. This configuration uses the mconf-based configuration tool. To
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change this configuration using that tool, you should:
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a. Build and install the kconfig-mconf tool. See nuttx/README.txt
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see additional README.txt files in the NuttX tools repository.
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b. Execute 'make menuconfig' in nuttx/ in order to start the
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reconfiguration process.
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2. By default, this configuration assumes that you are using the
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Cygwin environment on Windows. An option is to use the native
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CMD.exe window build as described in the top-level README.txt
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file. To set up that configuration:
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-CONFIG_WINDOWS_CYGWIN=y
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+CONFIG_WINDOWS_NATIVE=y
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And after configuring, make sure that CONFIG_APPS_DIR uses
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the back slash character. For example:
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CONFIG_APPS_DIR="..\apps"
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NOTES:
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a. If you need to change the toolchain path used in Make.defs, you
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will need to use the short 8.3 filenames to avoid spaces. On my
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PC, C:\PROGRA~1\ is is C:\Program Files\ and C:\PROGRA~2\ is
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C:\Program Files (x86)\
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b. I have not tried to use this configuration with the native
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Windows build, but I would expect the same issues as is listed
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for the ostest configuration..
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STATUS:
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1. Note that you must apply the ZNEO patch if you are using ZDS-II 5.0.1.
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See the README.txt file in the parent directory for more information.
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The configuration will run correctly with the patch applied.
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ostest
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------
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This builds the examples/ostest application for execution from FLASH.
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See the README.txt file in the ostest sub-directory for information
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about using ZDS-II. See also apps/examples/README.txt for information
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about ostest.
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NOTES:
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1. This configuration uses the mconf-based configuration tool. To
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change this configuration using that tool, you should:
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a. Build and install the kconfig-mconf tool. See nuttx/README.txt
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see additional README.txt files in the NuttX tools repository.
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b. Execute 'make menuconfig' in nuttx/ in order to start the
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reconfiguration process.
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2. By default, this configuration assumes that you are using the
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Cygwin environment on Windows. An option is to use the native
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CMD.exe window build as described in the top-level README.txt
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file. To set up that configuration:
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-CONFIG_WINDOWS_CYGWIN=y
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+CONFIG_WINDOWS_NATIVE=y
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And after configuring, make sure that CONFIG_APPS_DIR uses
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the back slash character. For example:
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CONFIG_APPS_DIR="..\apps"
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NOTES:
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a. If you need to change the toolchain path used in Make.defs, you
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will need to use the short 8.3 filenames to avoid spaces. On my
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PC, C:\PROGRA~1\ is is C:\Program Files\ and C:\PROGRA~2\ is
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C:\Program Files (x86)\
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b. You can't use setenv.sh in the native Windows environment. Try
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scripts/setenv.bat instead.
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c. At present, the native Windows build fails at the final link stages.
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The failure is due to problems in arch/z16/src/nuttx.linkcmd that
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is autogenerated by arch/z16/src/Makefile. The basic problem
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is the spurious spaces and and carriage returns are generated at
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the end of the lines after a line continuation (\ ^M). If these
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trailing bad characters are manually eliminated, then the build
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will succeed on the next try.
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pashello
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--------
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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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NOTES:
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1. This configuration uses the mconf-based configuration tool. To
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change this configuration using that tool, you should:
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a. Build and install the kconfig-mconf tool. See nuttx/README.txt
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see additional README.txt files in the NuttX tools repository.
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b. Execute 'make menuconfig' in nuttx/ in order to start the
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reconfiguration process.
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2. The last time I tried building this configuration, there were
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a few undefined symbols from the PCODE logic. It might require
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a little TLC to get this all working again.
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3. The native windows build has not been tried with this configuration
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but should, in principle, work (see notes for the ostest configuration
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above).
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Check out any README.txt files in these <sub-directory>s.
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