System Exception Module
19.2.1.3 ROM_SysExcIntEnable
Enables individual system exception interrupt sources.
Prototype:
void
ROM_SysExcIntEnable(uint32_t ui32IntFlags)
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_SYSEXCTABLE is an array of pointers located at ROM_APITABLE[30].
ROM_SysExcIntEnable is a function pointer located at ROM_SYSEXCTABLE[3].
Parameters:
ui32IntFlags is the bit mask of the interrupt sources to be enabled.
Description:
This function enables the indicated system exception interrupt sources. Only the sources that
are enabled can be reflected to the processor interrupt; disabled sources have no effect on the
processor.
The ui32IntFlags parameter is the logical OR of any of the following:
SYSEXCP_INT_FP_IXC - Floating-point inexact exception interrupt
SYSEXCP_INT_FP_OFC - Floating-point overflow exception interrupt
SYSEXCP_INT_FP_UFC - Floating-point underflow exception interrupt
SYSEXCP_INT_FP_IOC - Floating-point invalid operation interrupt
SYSEXCP_INT_FP_DZC - Floating-point divide by zero exception interrupt
SYSEXCP_INT_FP_IDC - Floating-point input denormal exception interrupt
Returns:
None.
19.2.1.4 ROM_SysExcIntStatus
Gets the current system exception interrupt status.
Prototype:
uint32_t
ROM_SysExcIntStatus(bool bMasked)
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_SYSEXCTABLE is an array of pointers located at ROM_APITABLE[30].
ROM_SysExcIntStatus is a function pointer located at ROM_SYSEXCTABLE[0].
Parameters:
bMasked is false if the raw interrupt status is required and true if the masked interrupt status
is required.
Description:
This function returns the system exception interrupt status. Either the raw interrupt status or
the status of interrupts that are allowed to reflect to the processor can be returned.
April 8, 2013 225
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