Reset Controller

Reset controller registers. More...

Collaboration diagram for Reset Controller:

Functions
void	At91Reset (void)
	System reset.
int	At91ResetCause (void)
Reset Controller Control Register
#define	RSTC_CR   (RSTC_BASE + 0x00)
	Reset controller control register address.
#define	RSTC_PROCRST   0x00000001
	Processor reset.
#define	RSTC_PERRST   0x00000004
	Peripheral reset.
#define	RSTC_EXTRST   0x00000008
	External reset.
#define	RSTC_KEY   0xA5000000
	Password.
Reset Controller Status Register
#define	RSTC_SR   (RSTC_BASE + 0x04)
	Reset controller status register address.
#define	RSTC_URSTS   0x00000001
	User reset status.
#define	RSTC_BODSTS   0x00000002
	Brownout detection status.
#define	RSTC_RSTTYP   0x00000700
	Reset type.
#define	RSTC_RSTTYP_POWERUP   0x00000000
	Power-up reset.
#define	RSTC_RSTTYP_WAKEUP   0x00000100
	VDDCORE rising.
#define	RSTC_RSTTYP_WATCHDOG   0x00000200
	Watchdog reset.
#define	RSTC_RSTTYP_SOFTWARE   0x00000300
	Software reset.
#define	RSTC_RSTTYP_USER   0x00000400
	User reset.
#define	RSTC_RSTTYP_BROWNOUT   0x00000500
	Brownout reset.
#define	RSTC_NRSTL   0x00010000
	NRST pin level.
#define	RSTC_SRCMP   0x00020000
	Software reset command in progress.
Reset Controller Mode Register
#define	RSTC_MR   (RSTC_BASE + 0x08)
	Reset controller mode register address.
#define	RSTC_URSTEN   0x00000001
	User reset enable.
#define	RSTC_URSTIEN   0x00000010
	User reset interrupt enable.
#define	RSTC_ERSTL   0x00000F00
	External reset length.
#define	RSTC_ERSTL_LSB   8
	Least significant bit of external reset length.
#define	RSTC_BODIEN   0x00010000
	Brown-out detection interrupt enable.
#define	RSTC_KEY_MSK   0xFF000000
	Password mask.

---

Detailed Description

Reset controller registers.

---

Define Documentation

#define RSTC_CR   (RSTC_BASE + 0x00)

Reset controller control register address.

Referenced by At91Reset().

#define RSTC_PROCRST   0x00000001

Processor reset.

Referenced by At91Reset().

#define RSTC_PERRST   0x00000004

Peripheral reset.

Referenced by At91Reset().

#define RSTC_EXTRST   0x00000008

External reset.

Referenced by At91Reset().

#define RSTC_KEY   0xA5000000

Password.

Referenced by __init2(), and At91Reset().

#define RSTC_SR   (RSTC_BASE + 0x04)

Reset controller status register address.

Referenced by At91ResetCause().

#define RSTC_URSTS   0x00000001

User reset status.

#define RSTC_BODSTS   0x00000002

Brownout detection status.

#define RSTC_RSTTYP   0x00000700

Reset type.

Referenced by At91ResetCause().

#define RSTC_RSTTYP_POWERUP   0x00000000

Power-up reset.

Referenced by At91ResetCause().

#define RSTC_RSTTYP_WAKEUP   0x00000100

VDDCORE rising.

#define RSTC_RSTTYP_WATCHDOG   0x00000200

Watchdog reset.

Referenced by At91ResetCause().

#define RSTC_RSTTYP_SOFTWARE   0x00000300

Software reset.

Referenced by At91ResetCause().

#define RSTC_RSTTYP_USER   0x00000400

User reset.

Referenced by At91ResetCause().

#define RSTC_RSTTYP_BROWNOUT   0x00000500

Brownout reset.

Referenced by At91ResetCause().

#define RSTC_NRSTL   0x00010000

NRST pin level.

#define RSTC_SRCMP   0x00020000

Software reset command in progress.

#define RSTC_MR   (RSTC_BASE + 0x08)

Reset controller mode register address.

Referenced by __init2().

#define RSTC_URSTEN   0x00000001

User reset enable.

Referenced by __init2().

#define RSTC_URSTIEN   0x00000010

User reset interrupt enable.

#define RSTC_ERSTL   0x00000F00

External reset length.

#define RSTC_ERSTL_LSB   8

Least significant bit of external reset length.

#define RSTC_BODIEN   0x00010000

Brown-out detection interrupt enable.

#define RSTC_KEY_MSK   0xFF000000

Password mask.

---

Function Documentation

void At91Reset

(

void

)

System reset.

References At91WatchDogStart(), outr, RSTC_CR, RSTC_EXTRST, RSTC_KEY, RSTC_PERRST, and RSTC_PROCRST.

Referenced by NutReset().

Here is the call graph for this function:

int At91ResetCause

(

void

)

References inr, NUT_RSTTYP_BROWNOUT, NUT_RSTTYP_EXTERNAL, NUT_RSTTYP_POWERUP, NUT_RSTTYP_SOFTWARE, NUT_RSTTYP_UNKNOWN, NUT_RSTTYP_WATCHDOG, rc, RSTC_RSTTYP, RSTC_RSTTYP_BROWNOUT, RSTC_RSTTYP_POWERUP, RSTC_RSTTYP_SOFTWARE, RSTC_RSTTYP_USER, RSTC_RSTTYP_WATCHDOG, and RSTC_SR.

Referenced by NutResetCause().