Hi all,
in the new x5xx family a lot of the memory mapping of the peripherals
has changed.
In particular, the watchdog is now defined as:
#define __MSP430_WDT_A_BASE__ 0x150 // msp430x54xx.h
#define WDTCTL_ __MSP430_WDT_A_BASE__ + 0x0C /* Watchdog
timer control register */ // wdt_a.h
In the libgcc.S file there is:
#if defined(L__low_level_init)
/*****************************************************************
* Initialize peripherial, particularly disable watchdog
* can be overwriten
*****************************************************************/
.section .init3, "ax", @progbits
.global __low_level_init
.weak __low_level_init
.func __low_level_init
__low_level_init:
mov #0x5a80, &0x120
.endfunc
#endif
where the watchdog address 0x120 is hardcoded. This is correct for
every MSP except for the newer x5xx family.
Is there anyone knowing the internals of the GCC who can fix or
suggest how to fix this ?
Parametrizing would be best, maybe with two different __low_level_init
functions that are linked against depending on the processor family.
R#
