Crt0.C And Crt.h - Freescale Semiconductor 802.15.4/Zigbee Reference Manual

802.15.4/zigbee embedded bootloader

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This file can also be used with the MC908HCS08GT60 MCU.

5.3.3 Crt0.c and Crt.h

These files contain the basic initialization code (basic system clock, memory and stack setup). The normal

basic init file(s) (like the start08.c from Metrowerks) is not needed when the Embedded Bootloader is

embedded.

In an 802.15.4/Zigbee application with Embedded Bootloader, these files only contain the _startupdata

structure. The Embedded Bootloader handles all the basic initialization (memory and stack setup) of the

application. That is, the application's main() function will be the first item called (entry point).

Do not include basic initialization (memory and stack setup) when

building an application with the Embedded Bootloader. Place any

necessary initialization function calls in the main() function. Whatever,

the initialization function or only the _startupdata structure is included is

controlled by compiler #defines. See

Application

5-4

Embedded Bootloader Reference Manual, Rev 0.0

NOTE

for more information.

Section 5.2.1, Compiler Defines

Freescale Semiconductor

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