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; This file defines a wrapper for the interrupt generated each time the button | |
; on the target board is pushed. The asm wrapper is used to save and restore | |
; the task context as a context switch may occur within the ISR itself. | |
; The C portion of the ISR is defined within ButtonTask.c. | |
; | |
; Include the portSAVE_CONTEXT and portRESTORE_CONTEXT macros. | |
#include "ISR_Support.h" | |
PUBLIC vButtonISRWrapper | |
EXTERN vButtonISRHandler | |
RSEG CODE:CODE | |
vButtonISRWrapper: | |
; Save the current task context. | |
portSAVE_CONTEXT | |
; Call the C portion of the ISR. | |
call vButtonISRHandler | |
; Restore the context of whichever task is to run next - which might be | |
; different from the task that was originally interrupted. | |
portRESTORE_CONTEXT | |
reti | |
; Place the ISR into the vector table. | |
COMMON INTVEC:CODE:ROOT(1) | |
ORG 8 | |
`??vButtonISRWrapper??INTVEC 8`: | |
DW vButtonISRWrapper | |
END |