60 lines
1.5 KiB
ReStructuredText
60 lines
1.5 KiB
ReStructuredText
.. _footprint:
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Optimizing for Footprint
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########################
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Stack Sizes
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***********
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Stack sizes of various system threads are specified generously to allow for
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usage in different scenarios on as many supported platforms as possible. You
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should start the optimization process by reviewing all stack sizes and adjusting
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them for your application:
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:option:`CONFIG_ISR_STACK_SIZE`
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Set to 2048 by default
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:option:`CONFIG_MAIN_STACK_SIZE`
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Set to 1024 by default
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:option:`CONFIG_IDLE_STACK_SIZE`
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Set to 320 by default
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:option:`CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE`
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Set to 1024 by default
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:option:`CONFIG_PRIVILEGED_STACK_SIZE`
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Set to 1024 by default, depends on userspace feature.
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Unused Peripherals
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******************
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Some peripherals are enabled by default. You can disable unused
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peripherals in your project configuration, for example::
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CONFIG_GPIO=n
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CONFIG_SPI=n
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Various Debug/Informational Options
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***********************************
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The following options are enabled by default to provide more information about
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the running application and to provide means for debugging and error handling:
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:option:`CONFIG_BOOT_BANNER`
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This option can be disabled to save a few bytes.
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:option:`CONFIG_DEBUG`
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This option can be disabled for production builds
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MPU/MMU Support
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***************
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Depending on your application and platform needs, you can disable MPU/MMU
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support to gain some memory and improve performance. Consider the consequences
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of this configuration choice though, because you'll lose advanced stack
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checking and support.
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