Maxim Integrated 73S12xxF Software - Manual (Page 59)

UG_12xxF_016
73S12xxF Software User Guide
Rev. 1.50 59
USR_INT_Config ()
Purpose Configure USER IO as an interrupt source for T0, T1, INT0 or INT1.
Synopsis
void USR_INT_Config (
IN enum USRINTSRC usr_src,
IN enum USRINTSEL int_select,
IN Boolean Enable,
IN Boolean EdgeTrigger )
Parameters
usr_src: Input parameter
Specifies which USER IO is to be used as the interrupt source. The available
choices (defined in USRINTSRC in api_struct_12.h) are:
USR0SRC 0,
USR1SRC 1,
USR2SRC 2,
USR3SRC 3,
USR4SRC 4,
USR5SRC 5,
USR6SRC 6,
USR7SRC 7
Int_select: Input parameter
Selects the interrupt source (defined in USRINTSEL in api_struct_12.h) as:
NOT_USE1 0,
NOT_USE2 1,
SEL_TIMER0 2,
SEL_TIMER1 3,
SEL_INT0_HI_RISE 4,
SEL_INT1_HI_RISE 5,
SEL_INT0_LOW_FALL 6,
SEL_INT1_LOW_FALL 7;
Enable: Input parameter
If TRUE, enables the selected interrupt source; otherwise, disables it.
EdgeTrigger: Inupt parameter
For INT0 and INT1 only, sets the interrupt to be level (FALSE) or edge (TRUE).
Return Codes None.
USR_INT_Read()
Purpose Read the current interrupt settings of the specified USER IO pin.
Synopsis
enum USRINTSEL USR_INT_Read ( enum USRINTSRC usr_src );
Parameters
usr_src: Input parameter
Corresponding USR pin to read the interrupt setting from.
Return Codes One of the following as defined in USRINTSEL:
NULL,
SEL_TIMER0
2,
SEL_TIMER1 3,
SEL_INT0_HI_RISE 4,
SEL_INT1_HI_RISE 5,
SEL_INT0_LOW_FALL 6,
SEL_INT1_LOW_FALL 7;