Aim ARINC 429 - 3.2 Api429 CmdBiuIntrCheck

38 Software Library Reference Manual for VME 429
Section 3 - System Functions
3.2 Api429CmdBiuIntrCheck
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AiUInt8 Api429CmdBiuIntrCheck( AiUInt8 b_Module, AiUInt8 b_DestBiu,
AiUInt32 *pl_Stat,
TY_API429_INTR_REGS *px_Regs );
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API429_BIU_INTR_STATUS (0x40)
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This command is used to read the interrupt status of the API429 BIU. Up to 32
interrupt events can be stored for two consecutive calls of this function.
Note: 32 interrupt events as a maximum (API429_MAX_IR_EVENT_BUF) can be
buffered in the TY_API429_INTR_REGS data structure. Index 0 contains the
latest occurred interrupt event.
The number of valid buffered interrupt events is equal to the returned
'pl_stat' value. The number of interrupt events is cleared with every call of
this function. If 'pl_Stat' is > 32, the entries in the structure
TY_API429_INTR_REGS are undefined and set to 0xFFFFFFFF (overflow).
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Discrete Channel ID
Value Description
0
Channel 1..16
1
Channel 17..32
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Interrupt counter, number of occurred BIU interrupt events between two
consecutive calls of this function.
Value Description
0
No interrupt event occurred
>0
Count of interrupt events (set to 0 after calling this function!)
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Pointer to loglist structure of occurred BIU interrupt events (api429.h)
typedef struct
{
AiUInt32 l_Lla[ API429_MAX_IR_EVENT_BUF ];
AiUInt32 l_Llb[ API429_MAX_IR_EVENT_BUF ];
} TY_API429_INTR_REGS;