FlashProgramming Class Reference

Provides the programming engine for flash self programming. More...

#include <flashprog.h>

Inheritance diagram for FlashProgramming:

[legend]

Collaboration diagram for FlashProgramming:

[legend]

List of all members.

Public Types
enum	{ SPM_TINY_MODE = 0, SPM_MEGA_MODE = 1, SPM_SIG_OPR = 2, SPM_TIMEOUT = 4000000 }
Public Member Functions
	FlashProgramming (AvrDevice *c, unsigned int pgsz, unsigned int nrww, int mode)
	Create a instance of FlashProgramming class.
	~FlashProgramming ()
unsigned int	CpuCycle ()
void	Reset ()
unsigned char	LPM_action (unsigned int xaddr, unsigned int addr)
int	SPM_action (unsigned int data, unsigned int xaddr, unsigned int addr)
void	SetSpmcr (unsigned char v)
unsigned char	GetSpmcr ()
Public Attributes
IOReg< FlashProgramming >	spmcr_reg
Protected Types
enum	SPM_ACTIONtype { SPM_ACTION_NOOP = 0, SPM_ACTION_PREPARE, SPM_ACTION_LOCKCPU, SPM_ACTION_WAIT }
	states of processing engine More...
enum	SPM_OPStype { SPM_OPS_NOOP = 0, SPM_OPS_STOREBUFFER, SPM_OPS_WRITEBUFFER, SPM_OPS_ERASE, SPM_OPS_LOCKBITS, SPM_OPS_UNLOCKRWW, SPM_OPS_CLEARBUFFER, SPM_OPS_READSIG }
	SPM operations. More...
Protected Member Functions
void	ClearOperationBits (void)
void	SetRWWLock (unsigned int addr)
Protected Attributes
unsigned int	pageSize
	page size in words
unsigned int	nrww_addr
	start address of non RWW area of flash (word address)
unsigned char	spmcr_val
	holds the register value
unsigned char	spmcr_opr_bits
	mask for operation bits, including SPMEN bit
unsigned char	spmcr_valid_bits
	mask for valid bits
int	opr_enable_count
	enable counter for SPM operation
SPM_ACTIONtype	action
	state of the processing engine
SPM_OPStype	spm_opr
	selected SPM operation
AvrDevice *	core
	link to AvrDevice
SystemClockOffset	timeout
	system time till operation run
unsigned char *	tempBuffer
	hidden buffer for flash page operations
bool	isATMega
	Flag: true, if in ATMega mode, if false, it's ATTiny mode.

Detailed Description

Provides the programming engine for flash self programming.

Todo:: not implemented yet: SPM interrupt. Support of LPM operation. Setting boot lock bits. Read-While-Write, if run code in NRWW section.

Definition at line 38 of file flashprog.h.

Member Enumeration Documentation

anonymous enum

Enumerator:

SPM_TINY_MODE
SPM_MEGA_MODE
SPM_SIG_OPR
SPM_TIMEOUT

Definition at line 76 of file flashprog.h.

enum FlashProgramming::SPM_ACTIONtype [protected]

states of processing engine

Enumerator:

SPM_ACTION_NOOP
SPM_ACTION_PREPARE
SPM_ACTION_LOCKCPU
SPM_ACTION_WAIT

Definition at line 42 of file flashprog.h.

enum FlashProgramming::SPM_OPStype [protected]

SPM operations.

Enumerator:

SPM_OPS_NOOP
SPM_OPS_STOREBUFFER
SPM_OPS_WRITEBUFFER
SPM_OPS_ERASE
SPM_OPS_LOCKBITS
SPM_OPS_UNLOCKRWW
SPM_OPS_CLEARBUFFER
SPM_OPS_READSIG

Definition at line 49 of file flashprog.h.

Constructor & Destructor Documentation

FlashProgramming::FlashProgramming	(	AvrDevice *	c,
		unsigned int	pgsz,
		unsigned int	nrww,
		int	mode
	)

Create a instance of FlashProgramming class.

Definition at line 52 of file flashprog.cpp.

References AvrDevice::AddToCycleList(), avr_new, core, isATMega, pageSize, Reset(), SPM_MEGA_MODE, SPM_SIG_OPR, spmcr_opr_bits, spmcr_valid_bits, and tempBuffer.

Here is the call graph for this function:

FlashProgramming::~FlashProgramming ( )

Definition at line 86 of file flashprog.cpp.

References avr_free(), and tempBuffer.

Here is the call graph for this function:

Member Function Documentation

void FlashProgramming::ClearOperationBits ( void ) [protected]

Definition at line 35 of file flashprog.cpp.

References action, SPM_ACTION_NOOP, spm_opr, SPM_OPS_NOOP, spmcr_opr_bits, and spmcr_val.

Referenced by CpuCycle(), and SPM_action().

Here is the caller graph for this function:

unsigned int FlashProgramming::CpuCycle ( void ) [virtual]

Called for each AVR cycle when this hardware has registered itself as a receiver for AVR clocks. Returns nonzero if instructions should not be executed (e.g. a Flash write is in progress).

Reimplemented from Hardware.

Definition at line 90 of file flashprog.cpp.

References action, ClearOperationBits(), SystemClock::Instance(), opr_enable_count, SPM_ACTION_LOCKCPU, and timeout.

Here is the call graph for this function: