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Implement portASSERT_IF_INTERRUPT_PRIORITY_INVALID() for PIC32.

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This commit is contained in:
Richard Barry 2013-07-12 19:25:21 +00:00
parent 25310a6796
commit 4b964814de
1 changed files with 39 additions and 14 deletions
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35
FreeRTOS/Source/portable/MPLAB/PIC32MX/portmacro.h
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@ -122,11 +122,30 @@ extern "C" {
#define portSW0_BIT ( 0x01 << 8 )
/* This clears the IPL bits, then sets them to
configMAX_SYSCALL_INTERRUPT_PRIORITY. This function should not be called
from an interrupt, so therefore will not be called with an IPL setting
above configMAX_SYSCALL_INTERRUPT_PRIORITY. Therefore, when used correctly, the
instructions in this macro can only result in the IPL being raised, and
therefore never lowered. */
configMAX_SYSCALL_INTERRUPT_PRIORITY. An extra check is performed if
configASSERT() is defined to ensure an assertion handler does not inadvertently
attempt to lower the IPL when the call to assert was triggered because the IPL
value was found to be above configMAX_SYSCALL_INTERRUPT_PRIORITY when an ISR
safe FreeRTOS API function was executed. ISR safe FreeRTOS API functions are
those that end in FromISR. FreeRTOS maintains a separate interrupt API to
ensure API function and interrupt entry is as fast and as simple as possible. */
#ifdef configASSERT
#define portDISABLE_INTERRUPTS() \
{ \
unsigned long ulStatus; \
\
/* Mask interrupts at and below the kernel interrupt priority. */ \
ulStatus = _CP0_GET_STATUS(); \
\
/* Is the current IPL below configMAX_SYSCALL_INTERRUPT_PRIORITY? */ \
if( ( ( ulStatus & portALL_IPL_BITS ) >> portIPL_SHIFT ) < configMAX_SYSCALL_INTERRUPT_PRIORITY ) \
{ \
ulStatus &= ~portALL_IPL_BITS; \
_CP0_SET_STATUS( ( ulStatus | ( configMAX_SYSCALL_INTERRUPT_PRIORITY << portIPL_SHIFT ) ) ); \
} \
}
#else
#define portDISABLE_INTERRUPTS() \
{ \
unsigned long ulStatus; \
@ -136,6 +155,7 @@ unsigned long ulStatus; \
ulStatus &= ~portALL_IPL_BITS; \
_CP0_SET_STATUS( ( ulStatus | ( configMAX_SYSCALL_INTERRUPT_PRIORITY << portIPL_SHIFT ) ) ); \
}
#endif /* configASSERT */
#define portENABLE_INTERRUPTS() \
{ \
@ -190,6 +210,11 @@ unsigned long ulStatus; \
_CP0_SET_CAUSE( ulStatus ); \
}
#ifdef configASSERT
#define portCURRENT_INTERRUPT_PRIORITY ( ( _CP0_GET_STATUS() & portALL_IPL_BITS ) >> portIPL_SHIFT )
#define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() configASSERT( portCURRENT_INTERRUPT_PRIORITY <= configMAX_SYSCALL_INTERRUPT_PRIORITY )
#endif /* configASSERT */
#define portNOP() asm volatile ( "nop" )