Renesas Single-Chip Microcomputer M38C89T-ADF Manuel d'utilisateur télécharger pdf (Page 32)

Rev.1.00 May 22 2012

REJ09B0566

4-12

Library Reference

R_INTC_GetExtInterruptStatus

4.2.2

33BInterrupt Control Unit

4) R_INTC_GetExtInterruptStatus

Synopsis

Read the external interrupt status.

Prototype bool R_INTC_GetExtInterruptStatus(

uint8_t data1, // Pin selection

uint8_t * data2

// A pointer to the buffer where the status data shall be stored.

);

Description

Acquire the status for the specified external interrupt.

[data1]

Choose the interrupt pin to be checked.

PDL_INTC_IRQ0 External interrupt 0

PDL_INTC_IRQ1 External interrupt 1

PDL_INTC_IRQ2 External interrupt 2

PDL_INTC_IRQ3 External interrupt 3

PDL_INTC_IRQ4 External interrupt 4

PDL_INTC_IRQ5 External interrupt 5

PDL_INTC_IRQ6 External interrupt 6

PDL_INTC_IRQ7 External interrupt 7

PDL_INTC_PINT0 External interrupt Pin 0

PDL_INTC_PINT1 External interrupt Pin 1

PDL_INTC_PINT2 External interrupt Pin 2

PDL_INTC_PINT3 External interrupt Pin 3

PDL_INTC_PINT4 External interrupt Pin 4

PDL_INTC_PINT5 External interrupt Pin 5

PDL_INTC_PINT6 External interrupt Pin 6

PDL_INTC_PINT7 External interrupt Pin 7

PDL_INTC_NMI NMI Interrupt

PDL_INTC_GEN_ILL_INSTRUCTI

ON General illegal instruction

PDL_INTC_SLOT_ILL_INSTRUCTI

ON Slot illegal instruction

PDL_INTC_CPU_ADDR_ERR CPU Address Error

PDL_INTC_DMA_ADDR_ERR DMA Address Error

PDL_INTC_FPU FPU Error

PDL_INTC_BANK_OVERFLOW BANK Overflow Error

PDL_INTC_BANK_UNDERFLOW BANK Underflow Error

PDL_INTC_DIV_BY_ZERO Divide by Zero Error

PDL_INTC_DIV_OVERFLOW Divide Overflow Error

[data2]

The status flags shall be stored in the following format:

For an IRQ and PINT pin:

b7 – b4 b3 – b2 b1 b0

00: Low level detection

01: Falling edge detection

10: Rising edge detection

11: Both edge detection

Pin logic

level

0: Idle

1: Valid interrupt condition detected

For the NMI pin:

b7 – b2 b1 b0

0: Falling edge detection

1: Rising edge detection

0: Idle

1: Valid interrupt condition detected

Return value

True if all parameters are valid and exclusive; otherwise false.

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