VSN Board Support Package, for the NuttX, Uros Platise <uros.platise@isotel.eu>
===============================================================================
http://www.netClamps.com
The directory contains start-up and board level functions.
Execution starts in the following order:
- sysclock, immediately after reset stm32_rcc calls external
clock configuration when
CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG=y
is set. It must be set for the VSN board.
- boot, performs initial chip and board initialization
- sched/os_bringup.c then calls either user_start or exec_builtin()
with application as set in the .config
Naming throughout the code
==========================
- _init(): used to be called once only, after powerup, to perform board
initialization
- _start() or called via FS _open(): starts peripheral power, puts it
into operation
- _stop() or called via FS _close(): opposite to _start()
System notifications (a sort of run-levels)
===========================================
On the VSN, NSH represents the core application as it supports scripts
easily adaptable for any custom application configuration. NSH is
invoked as follows (argument runs a script from the /etc/init.d directory):
- nsh init: on system powerup called by the NuttX APP_START
TODOs:
- nsh xpowerup: run on external power used to:
- try to setup an USB serial connection
- configure SLIP mode, internet
- start other internet services, such as telnetd, ftpd, httpd
- nsh xpowerdown: run whenever USB recevied suspend signal or
external power has been removed.
- used to stop internet services
- nsh batdown: whenever battery is completely discharged
Compile notes
===============================
To link-in the sif_main() utility do, in this folder:
- make context TOPDIR=<path to nuttx top dir>
This will result in registering the application into the builtin application
registry.
fc8b6759b7