51 lines
1.6 KiB
Plaintext
51 lines
1.6 KiB
Plaintext
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#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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if ARCH_BOARD_SAME54_XPLAINED_PRO
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choice
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prompt "Execution memory"
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default SAME54_XPLAINED_PRO_RUNFROMFLASH
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config SAME54_XPLAINED_PRO_RUNFROMFLASH
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bool "Run from FLASH"
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select BOOT_RUNFROMFLASH
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---help---
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This is the normal configuration for building SAM E54 Xplained
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Pro code.
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config SAME54_XPLAINED_PRO_RUNFROMSRAM
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bool "Run from SRAM"
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select BOOT_RUNFROMISRAM
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---help---
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During early bring-up, it is safer to execute entirely from
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SRAM until you are confident in the initialization logic.
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Then you can safely switch to FLASH.
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REVISIT: This auto-selects CONFIG_BOOT_RUNFROMISRAM but I have
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found, with some difficulty, that that choice still defaults to
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CONFIG_BOOT_RUNFROMFLASH, causing link-time failures when running
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from SRAM.
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endchoice # Execution memory
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config SAME54_XPLAINED_PRO_32KHZXTAL
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bool "32.768 KHz XTAL"
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default n
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---help---
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According to the schematic, a 32.768 KHz crystal is installed on
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board. However, I have been unable to use this crystal and thought
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perhaps it is missing or defective on my board (there is a metal
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package that could be a crystal on board, but I am not certain).
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Another, more likely option is that there is a coding error on my
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part that prevents the 32.768 KHz crystal from usable(?)
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The configuration defaults to using the always-on OSCULP32 as the
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slow clock source. This option will select instead XOSC32 as the
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slow clock source.
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endif # ARCH_BOARD_SAME54_XPLAINED_PRO
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