pic24_flash.c File Reference

#include "pic24_flash.h"
#include "pic24_chip.h"
#include "pic24_unittest.h"
#include "pic24_util.h"

Go to the source code of this file.

Functions
void	doWriteLatchFlash (uint16_t u16_addrhi, uint16_t u16_addrlo, uint16_t u16_wordhi, uint16_t u16_wordlo)
uint32_t	doReadLatchFlash (uint16_t u16_addrhi, uint16_t u16_addrlo)
void	doErasePageFlash (uint16_t u16_addrhi, uint16_t u16_addrlo)
void	doWriteRowFlash ()
void	doWritePageFlash (union32 u32_pmemAddress, uint8_t *pu8_data, uint16_t u16_len)
void	doReadPageFlash (union32 u32_pmemAddress, uint8_t *pu8_data, uint16_t u16_len)

Detailed Description

FLASH memory read/write support functions. Thanks goes to David Weaver for suggestions on improving these functions.

Definition in file pic24_flash.c.

Function Documentation

doErasePageFlash()

void doErasePageFlash	(	uint16_t	u16_addrhi,
		uint16_t	u16_addrlo
	)

Erases a flash page at u16_addrhi:u16_addrlo flash address

Parameters

u16_addrhi	upper word of flash memory address
u16_addrlo	lower word of flash memory address

Definition at line 116 of file pic24_flash.c.

doReadLatchFlash()

uint32_t doReadLatchFlash	(	uint16_t	u16_addrhi,
		uint16_t	u16_addrlo
	)

Read table latch from address u16_addrhi:u16_addrlo

Parameters

u16_addrhi	upper word of flash memory address
u16_addrlo	lower word of flash memory address

Returns

24-bit data value returned in uint32_t type

Definition at line 102 of file pic24_flash.c.

doReadPageFlash()

void doReadPageFlash	(	union32	u32_pmemAddress,
		uint8_t *	pu8_data,
		uint16_t	u16_len
	)

Reads a flash page at u32_pmemAddress, returns u16_len bytes in buffer pu8_data

Parameters

u32_pmemAddress	flash memory address, should be on a page boundary
pu8_data	pointer to byte data to write
u16_len	number of bytes to read

Definition at line 247 of file pic24_flash.c.

doWriteLatchFlash()

void doWriteLatchFlash	(	uint16_t	u16_addrhi,
		uint16_t	u16_addrlo,
		uint16_t	u16_wordhi,
		uint16_t	u16_wordlo
	)

Write table latch with address u16_addrhi:u16_addrlo, data: u16_wordhi:u16_wordlo

Parameters

u16_addrhi	upper word of flash memory address
u16_addrlo	lower word of flash memory address
u16_wordhi	upper data word (only lower 8-bits are valid, upper 8-bits should be zero)
u16_wordlo	lower data word

Definition at line 49 of file pic24_flash.c.

doWritePageFlash()

void doWritePageFlash	(	union32	u32_pmemAddress,
		uint8_t *	pu8_data,
		uint16_t	u16_len
	)

Erases a flash page at u32_pmemAddress, then writes u16_len bytes from pu8_data to program memory.

Parameters

u32_pmemAddress	flash memory address, should be on a page boundary
pu8_data	pointer to byte data to write
u16_len	number of bytes to write, this is rounded up nearest row boundary! (should be evenly divisible by 64*3). For

Definition at line 194 of file pic24_flash.c.

doWriteRowFlash()

void doWriteRowFlash

(

)

Write current flash row

Definition at line 168 of file pic24_flash.c.