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https://github.com/DarkFlippers/unleashed-firmware
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36 lines
1.6 KiB
Markdown
36 lines
1.6 KiB
Markdown
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PyCortexMDebug
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==============
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## SVD
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ARM defines an SVD (System View Description) file format in its CMSIS standard as a means for Cortex-M-based chip manufacturers to provide a common description of peripherals, registers, and register fields. You can download SVD files for different manufacturers [here](http://www.arm.com/products/processors/cortex-m/cortex-microcontroller-software-interface-standard.php).
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The implementation consists of two components -- An lxml-based parser module (pysvd) and a GDB file (gdb_svd). I haven't yet worked out a perfect workflow for this, though it's quite easy to use when you already tend to have a GDB initialization file for starting up OpenOCD and the like. However your workflow works, just make sure to, in GDB:
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source gdb_svd.py
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svd_load [your_svd_file].svd
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These files can be huge so it might take a second or two. Anyways, after that, you can do
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svd
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to list available peripherals with descriptions. Or you can do
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svd [some_peripheral_name]
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to see all of the registers (with their values) for a given peripheral. For more details, run
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svd [some_peripheral_name] [some_register_name]
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to see all of the field values with descriptions.
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You can add format modifiers like:
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* `svd/x` will display values in hex
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* `svd/o` will display values in octal
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* `svd/t` or `svd/b` will display values in binary
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* `svd/a` will display values in hex and try to resolve symbols from the values
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All field values are displayed at the correct lengths as provided by the SVD files.
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Also, tab completion exists for nearly everything! When in doubt, run `svd help`.
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