- added svn props for newly added files
git-svn-id: svn://svn.berlios.de/openocd/trunk@752 b42882b7-edfa-0310-969c-e2dbd0fdcd60
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Plan for hosted scripting support in OpenOCD
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Plan for hosted scripting support in OpenOCD
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============================================
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============================================
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Jim Tcl support in OpenOCD currently exists as a patch.
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Jim Tcl support in OpenOCD currently exists as a patch.
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There has been some discussion on the list as to what
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There has been some discussion on the list as to what
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purpose scripting support might serve in OpenOCD.
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purpose scripting support might serve in OpenOCD.
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Also Lua was proposed as a scripting language, but
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Also Lua was proposed as a scripting language, but
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only Jim Tcl has been forwarded as a patch.
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only Jim Tcl has been forwarded as a patch.
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Tcl is also backwards syntax compatible with OpenOCD
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Tcl is also backwards syntax compatible with OpenOCD
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commands.
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commands.
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What scripting will not do
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What scripting will not do
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==========================
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==========================
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It is not the intention that normal OpenOCD users will
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It is not the intention that normal OpenOCD users will
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use tcl scripting extensively, write lots of clever scripts,
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use tcl scripting extensively, write lots of clever scripts,
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or contribute back to OpenOCD.
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or contribute back to OpenOCD.
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The scripting support is intended for developers of OpenOCD.
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The scripting support is intended for developers of OpenOCD.
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Target scripts can contain new procedures that end users may
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Target scripts can contain new procedures that end users may
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tinker to their needs without really understanding tcl.
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tinker to their needs without really understanding tcl.
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Since end users are not expected to mess with the scripting
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Since end users are not expected to mess with the scripting
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language, the choice of language is not terribly important
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language, the choice of language is not terribly important
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to those same end users.
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to those same end users.
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Uses of scripting
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Uses of scripting
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=================
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=================
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Default implementation of procedures in tcl/procedures.tcl.
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Default implementation of procedures in tcl/procedures.tcl.
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- Polymorphic commands for target scripts.
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- Polymorphic commands for target scripts.
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- there will be added some commands in Tcl that the target
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- there will be added some commands in Tcl that the target
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scripts can replace.
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scripts can replace.
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- produce <productionfile> <serialnumber>. Default implementation
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- produce <productionfile> <serialnumber>. Default implementation
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is to ignore serial number and write a raw binary file
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is to ignore serial number and write a raw binary file
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to beginning of first flash. Target script can dictate
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to beginning of first flash. Target script can dictate
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file format and structure of serialnumber. Tcl allows
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file format and structure of serialnumber. Tcl allows
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an argument to consit of e.g. a list so the structure of
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an argument to consit of e.g. a list so the structure of
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the serial number is not limited to a single string.
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the serial number is not limited to a single string.
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- reset handling. Precise control of how srst, trst &
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- reset handling. Precise control of how srst, trst &
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tms is handled.
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tms is handled.
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- replace some parts of the current command line handler.
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- replace some parts of the current command line handler.
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This is only to simplify the implementation of OpenOCD
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This is only to simplify the implementation of OpenOCD
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and will have no externally visible consequences.
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and will have no externally visible consequences.
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Tcl has an advantage in that it's syntax is backwards
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Tcl has an advantage in that it's syntax is backwards
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compatible with the current OpenOCD syntax.
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compatible with the current OpenOCD syntax.
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