Flash Manager

Functions to control the ST MP25P80 serial flash device. More...

Defines
#define	FLASH_CS   PIN_B3
	Flash Chip Select - Port B3.
#define	FLASH_CLK   PIN_B5
	Flash Clock - Port B5.
#define	FLASH_D   PIN_B4
	Flash Data Input - Port B4.
#define	FLASH_Q   PIN_B2
	Flash Data Output - Port B2.
Functions
bool_t	flashIsWriteInProgress ()
	Determine if a flash write or erase operation is currently in progress.
void	flashReadBlock (uint32_t address, uint8_t *block, uint16_t length)
	Read a block of memory from the flash device.
void	flashWriteBlock (uint32_t address, uint8_t *block, uint8_t length)
	Write a block of memory to the flash device.
void	flashErase ()
	Erase the entire flash device (all locations set to 0xff).
uint8_t	flashGetByte ()
	Read a single byte from the flash device through the serial interface.
void	flashInit ()
	Initialize the flash memory subsystem.
void	flashSendByte (uint8_t value)
	Write a single byte to the flash device through the serial interface.
void	flashSendAddress (uint32_t address)
	Write the 24-bit address to the flash device through the serial interface.

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Detailed Description

Functions to control the ST MP25P80 serial flash device.

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Define Documentation

#define FLASH_CLK   PIN_B5

Flash Clock - Port B5.

Definition at line 1135 of file PicoBeacon.c.

Referenced by flashGetByte(), flashInit(), flashSendAddress(), and flashSendByte().

#define FLASH_CS   PIN_B3

Flash Chip Select - Port B3.

Definition at line 1132 of file PicoBeacon.c.

Referenced by flashErase(), flashInit(), flashIsWriteInProgress(), flashReadBlock(), and flashWriteBlock().

#define FLASH_D   PIN_B4

Flash Data Input - Port B4.

Definition at line 1138 of file PicoBeacon.c.

Referenced by flashInit(), flashSendAddress(), and flashSendByte().

#define FLASH_Q   PIN_B2

Flash Data Output - Port B2.

Definition at line 1141 of file PicoBeacon.c.

Referenced by flashGetByte().

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Function Documentation

void flashErase

(

)

Erase the entire flash device (all locations set to 0xff).

Definition at line 1245 of file PicoBeacon.c.

References FLASH_CS, flashIsWriteInProgress(), and flashSendByte().

Referenced by diagEraseFlash().

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uint8_t flashGetByte

(

)

Read a single byte from the flash device through the serial interface.

This function only controls the clock line. The chip select must be configured before calling this function.

Returns:

byte read from device

Definition at line 1267 of file PicoBeacon.c.

References FLASH_CLK, FLASH_Q, and value.

Referenced by flashIsWriteInProgress(), and flashReadBlock().

void flashInit

(

)

Initialize the flash memory subsystem.

Definition at line 1294 of file PicoBeacon.c.

References FLASH_CLK, FLASH_CS, and FLASH_D.

Referenced by main().

bool_t flashIsWriteInProgress

(

)

Determine if a flash write or erase operation is currently in progress.

Returns:

true if write/erase in progress

Definition at line 1148 of file PicoBeacon.c.

References FLASH_CS, flashGetByte(), and flashSendByte().

Referenced by flashErase(), and flashWriteBlock().

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void flashReadBlock	(	uint32_t	address,
		uint8_t *	block,
		uint16_t	length
	)

Read a block of memory from the flash device.

Parameters:

	address	of desired location in the range 0x00000 to 0xFFFFF (1MB)
	block	pointer to locate of data block
	length	number of bytes to read

Definition at line 1171 of file PicoBeacon.c.

References FLASH_CS, flashGetByte(), flashSendAddress(), and flashSendByte().

Referenced by diagReadFlash(), and logInit().

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void flashSendAddress

(

uint32_t

address

)

Write the 24-bit address to the flash device through the serial interface.

This function only controls the clock line. The chip select must be configured before calling this function.

Parameters:

address

24-bit flash device address

Definition at line 1338 of file PicoBeacon.c.

References FLASH_CLK, and FLASH_D.

Referenced by flashReadBlock(), and flashWriteBlock().

void flashSendByte

(

uint8_t

value

)

Write a single byte to the flash device through the serial interface.

This function only controls the clock line. The chip select must be configured before calling this function.

Parameters:

value

byte to write to device

Definition at line 1309 of file PicoBeacon.c.

References FLASH_CLK, and FLASH_D.

Referenced by flashErase(), flashIsWriteInProgress(), flashReadBlock(), and flashWriteBlock().

void flashWriteBlock	(	uint32_t	address,
		uint8_t *	block,
		uint8_t	length
	)

Write a block of memory to the flash device.

Parameters:

	address	of desired location in the range 0x00000 to 0xFFFFF (1MB)
	block	pointer data block to write
	length	number of bytes to write

Definition at line 1194 of file PicoBeacon.c.

References FLASH_CS, flashIsWriteInProgress(), flashSendAddress(), and flashSendByte().

Referenced by logFlush().

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