PikeAero::CFlash Class Reference

#include <cflash.h>

Inheritance diagram for PikeAero::CFlash:

[legend]

Collaboration diagram for PikeAero::CFlash:

[legend]

Public Member Functions
	CFlash ()
CMachine::ubit32	erase (CMachine::ubit32 sectors=0)
void	reset ()
CMachine::ubit32	status ()
CMachine::ubit32	writeDoubleWord (CMachine::ubit32 *address, CMachine::ubit32 *data)
	write a double word to flash
CMachine::ubit32	writeWord (CMachine::ubit32 *address, CMachine::ubit32 data)
	write a word to flash
CMachine::bit32	writeWords (CMachine::ubit32 *address, CMachine::ubit32 *data, CMachine::bit32 size)
	write a block of data to flash
virtual	~CFlash ()
Private Member Functions
FLASHR_TypeDef *	flash ()

---

Detailed Description

Implements the interface to on-chip FLASH memory. CAUTION: This class is non-reentrant!

Author:

Michael Sharkey <mike@pikeaero.com>

Definition at line 31 of file cflash.h.

---

Constructor & Destructor Documentation

PikeAero::CFlash::CFlash

(

)

Definition at line 29 of file cflash.cpp.

References initializeFLASH(), and reset().

: inherited()
{
    flashOp = (CMachine::ubit32 (*)())initializeFLASH();
    reset();
}

Here is the call graph for this function:

PikeAero::CFlash::~CFlash

(

)

[virtual]

Definition at line 36 of file cflash.cpp.

References reset().

{
   reset();
}

Here is the call graph for this function:

---

Member Function Documentation

CMachine::ubit32 PikeAero::CFlash::erase

(

CMachine::ubit32

sectors = 0

)

Definition at line 60 of file cflash.cpp.

References PikeAero::FLASHR_TypeDef::CR0, PikeAero::FLASHR_TypeDef::CR1, flash(), FLASH_SER, and reset().

Referenced by PikeAero::CConfiguration::initializeStorage().

{
    if ( sectors )
    {
        reset();
        /* Set the sector erase bit */
        flash()->CR0 |= FLASH_SER;
        /* Select the sectors to be erased */
        flash()->CR1 |= sectors;
        /* Start the operation */
        return flashOp();
    }
    return 0;
}

Here is the call graph for this function:

Here is the caller graph for this function:

FLASHR_TypeDef* PikeAero::CFlash::flash

(

)

[inline, private]

Definition at line 46 of file cflash.h.

References FLASHR.

Referenced by erase(), reset(), status(), writeDoubleWord(), and writeWord().

{return FLASHR;}

Here is the caller graph for this function:

void PikeAero::CFlash::reset

(

)

Definition at line 43 of file cflash.cpp.

References PikeAero::FLASHR_TypeDef::AR, PikeAero::FLASHR_TypeDef::CR0, PikeAero::FLASHR_TypeDef::CR1, PikeAero::FLASHR_TypeDef::DR0, PikeAero::FLASHR_TypeDef::DR1, PikeAero::FLASHR_TypeDef::ER, and flash().

Referenced by CFlash(), erase(), writeDoubleWord(), writeWord(), and ~CFlash().

{
    /* Reset the Flash control registers */
    flash()->CR0 = 0x00000000;
    flash()->CR1 = 0x00000000;

    /* Reset the Flash data registers */
    flash()->DR0 = 0xFFFFFFFF;
    flash()->DR1 = 0xFFFFFFFF;

    /* Reset the Flash address register */
    flash()->AR = 0x00000000;

    /* Reset the Flash error register */
    flash()->ER = 0x00000000;
}

Here is the call graph for this function:

Here is the caller graph for this function:

CMachine::ubit32 PikeAero::CFlash::status

(

)

[inline]

Definition at line 38 of file cflash.h.

References PikeAero::FLASHR_TypeDef::ER, and flash().

{return flash()->ER;}

Here is the call graph for this function:

CMachine::ubit32 PikeAero::CFlash::writeDoubleWord	(	CMachine::ubit32 *	address,
		CMachine::ubit32 *	data
	)

write a double word to flash

Definition at line 94 of file cflash.cpp.

References PikeAero::FLASHR_TypeDef::AR, PikeAero::FLASHR_TypeDef::CR0, PikeAero::FLASHR_TypeDef::DR0, PikeAero::FLASHR_TypeDef::DR1, flash(), FLASH_DWPG, and reset().

{
    reset();
    /* Set the double word programming bit */
    flash()->CR0 |= FLASH_DWPG;
    /* Load the destination address */
    flash()->AR   = (CMachine::ubit32)address;
    /* Load FLASH_Data_1 in the DR0 register */
    flash()->DR0  = data[0];
    /* Load FLASH_Data_2 in the DR1 register */
    flash()->DR1  = data[1];
    /* Start the operation */
    return flashOp();
}

Here is the call graph for this function:

CMachine::ubit32 PikeAero::CFlash::writeWord	(	CMachine::ubit32 *	address,
		CMachine::ubit32	data
	)

write a word to flash

Definition at line 78 of file cflash.cpp.

References PikeAero::FLASHR_TypeDef::AR, PikeAero::FLASHR_TypeDef::CR0, PikeAero::FLASHR_TypeDef::DR0, flash(), FLASH_WPG, and reset().

Referenced by writeWords().

{
    reset();
    /* Set the word programming bit */
    flash()->CR0 |= FLASH_WPG;
    /* Load the destination address */
    flash()->AR   = (CMachine::ubit32)address;
    /* Load DATA to be programmed */
    flash()->DR0  = data;
    /* Start the operation */
    return flashOp();
}

Here is the call graph for this function:

Here is the caller graph for this function:

CMachine::bit32 PikeAero::CFlash::writeWords	(	CMachine::ubit32 *	address,
		CMachine::ubit32 *	data,
		CMachine::bit32	size
	)

write a block of data to flash

Parameters:

	address	Specifies the target base assress in FLASH memory.
	data	Specifies the source base address of memory to write to FLASH.
	size	Specifies aize of source data in WORDS.

Returns:

0 on success, error code otherwise.

Definition at line 116 of file cflash.cpp.

References writeWord().

{
    CMachine::ubit32 rc = 0;
    /* check for word boundary... */
    while ( size > 0 && rc == 0 )
    {
        rc = writeWord( address++, *data++ );
        --size;
    }
    return rc;
}

Here is the call graph for this function:

---

The documentation for this class was generated from the following files:

• cflash.h
• cflash.cpp