How to save HCS12 interrupt state

AndersJ — Wed, 08 Dec 2010 19:12:39 GMT

CW for HCS08 provides "intrinsics_hcs12.h".

It provides the "__isflag_int_enabled()" function returning TRUE if interrupts are enabled.

This is useful for pushing and popping interrupt status when a disable is needed

and you do not know if you were called by interrupt or not,

and need to restore proper interrupt enable status.

Is there a similar possibility in CW for HCS12?

Thanks,

Anders J

Re: How to save HCS12 interrupt state

kef — Wed, 08 Dec 2010 20:10:40 GMT

I'd love intrinsic for carry flag on S12(X). But on S12(X) there're no BMC/BMS instructions like on S08. Such intrinsic function for S12 interrupt flag would generate something like this

PSHA

TFR CCR,A

BITA #0x10

PULA

BEQ / BNE depending on required branch condition

topic Re: How to save HCS12 interrupt state in CodeWarrior for MCU

How to save HCS12 interrupt state

Re: How to save HCS12 interrupt state