59 lines
1.9 KiB
Plaintext
59 lines
1.9 KiB
Plaintext
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VSN Board Support Package, for the NuttX, Uros Platise <uros.platise@isotel.eu>
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===============================================================================
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http://www.netClamps.com
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The directory contains start-up and board level functions.
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Execution starts in the following order:
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- sysclock, immediately after reset stm32_rcc calls external
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clock configuration when
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CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG=y
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is set. It must be set for the VSN board.
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- boot, performs initial chip and board initialization
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- sched/os_bringup.c then calls either user_start or exec_namedapp()
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with application as set in the .config
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Naming throughout the code
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==========================
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- _init(): used to be called once only, after powerup, to perform board
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initialization
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- _start() or called via FS _open(): starts peripheral power, puts it
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into operation
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- _stop() or called via FS _close(): opposite to _start()
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System notifications (a sort of run-levels)
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===========================================
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On the VSN, NSH represents the core application as it supports scripts
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easily adaptable for any custom application configuration. NSH is
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invoked as follows (argument runs a script from the /etc/init.d directory):
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- nsh init: on system powerup called by the NuttX APP_START
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TODOs:
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- nsh xpowerup: run on external power used to:
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- try to setup an USB serial connection
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- configure SLIP mode, internet
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- start other internet services, such as telnetd, ftpd, httpd
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- nsh xpowerdown: run whenever USB recevied suspend signal or
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external power has been removed.
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- used to stop internet services
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- nsh batdown: whenever battery is completely discharged
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Compile notes
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===============================
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To link-in the sif_main() utility do, in this folder:
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- make context TOPDIR=<path to nuttx top dir>
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This will result in registering the application into the namedapp.
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