Periodic Interval Timer

Periodic interval timer registers. More...

Collaboration diagram for Periodic Interval Timer:

Periodic Inverval Timer Mode Register
#define	PIT_MR_OFF   0x00000000
	Mode register offset.
#define	PIT_MR   (PIT_BASE + PIT_MR_OFF)
	Mode register address.
#define	PIT_PIV   0x000FFFFF
	Periodic interval value mask.
#define	PIT_PIV_LSB   0
	Periodic interval value LSB.
#define	PIT_PITEN   0x01000000
	Periodic interval timer enable.
#define	PIT_PITIEN   0x02000000
	Periodic interval timer interrupt enable.
Periodic Inverval Timer Status Register
#define	PIT_SR_OFF   0x00000004
	Status register offset.
#define	PIT_SR   (PIT_BASE + PIT_SR_OFF)
	Status register address.
#define	PIT_PITS   0x00000001
	Timer has reached PIT_PIV.
Periodic Inverval Timer Value and Image Registers
#define	PIT_PIVR_OFF   0x00000008
	Value register offset.
#define	PIT_PIVR   (PIT_BASE + PIT_PIVR_OFF)
	Value register address.
#define	PIT_PIIR_OFF   0x0000000C
	Image register offset.
#define	PIT_PIIR   (PIT_BASE + PIT_PIIR_OFF)
	Image register address.
#define	PIT_CPIV   0x000FFFFF
	Current periodic interval value mask.
#define	PIT_CPIV_LSB   0
	Current periodic interval value LSB.
#define	PIT_PICNT   0xFFF00000
	Periodic interval counter mask.
#define	PIT_PICNT_LSB   20
	Periodic interval counter LSB.

---

Detailed Description

Periodic interval timer registers.

---

Define Documentation

#define PIT_MR_OFF   0x00000000

Mode register offset.

Definition at line 57 of file at91_pit.h.

#define PIT_MR   (PIT_BASE + PIT_MR_OFF)

Mode register address.

Definition at line 58 of file at91_pit.h.

Referenced by NutGetTickClock(), and NutRegisterTimer().

#define PIT_PIV   0x000FFFFF

Periodic interval value mask.

Definition at line 59 of file at91_pit.h.

Referenced by NutGetTickClock().

#define PIT_PIV_LSB   0

Periodic interval value LSB.

Definition at line 60 of file at91_pit.h.

Referenced by NutRegisterTimer().

#define PIT_PITEN   0x01000000

Periodic interval timer enable.

Definition at line 61 of file at91_pit.h.

Referenced by NutRegisterTimer().

#define PIT_PITIEN   0x02000000

Periodic interval timer interrupt enable.

Definition at line 62 of file at91_pit.h.

Referenced by NutRegisterTimer().

#define PIT_SR_OFF   0x00000004

Status register offset.

Definition at line 67 of file at91_pit.h.

#define PIT_SR   (PIT_BASE + PIT_SR_OFF)

Status register address.

Definition at line 68 of file at91_pit.h.

#define PIT_PITS   0x00000001

Timer has reached PIT_PIV.

Definition at line 69 of file at91_pit.h.

#define PIT_PIVR_OFF   0x00000008

Value register offset.

Definition at line 74 of file at91_pit.h.

#define PIT_PIVR   (PIT_BASE + PIT_PIVR_OFF)

Value register address.

Definition at line 75 of file at91_pit.h.

Referenced by NutRegisterTimer().

#define PIT_PIIR_OFF   0x0000000C

Image register offset.

Definition at line 76 of file at91_pit.h.

#define PIT_PIIR   (PIT_BASE + PIT_PIIR_OFF)

Image register address.

Definition at line 77 of file at91_pit.h.

#define PIT_CPIV   0x000FFFFF

Current periodic interval value mask.

Definition at line 78 of file at91_pit.h.

#define PIT_CPIV_LSB   0

Current periodic interval value LSB.

Definition at line 79 of file at91_pit.h.

#define PIT_PICNT   0xFFF00000

Periodic interval counter mask.

Definition at line 80 of file at91_pit.h.

#define PIT_PICNT_LSB   20

Periodic interval counter LSB.

Definition at line 81 of file at91_pit.h.