flash.c File Reference

Flash read and bit test utilities. More...

#include "user_config.h"
#include <stdint.h>
#include <stdarg.h>
#include <string.h>
#include <math.h>
#include "flash.h"

Go to the source code of this file.

Macros
#define	USE_CACHE

Functions
uint8_t	read_flash8 (uint8_t *p)
void	cpy_flash (uint8_t *src, uint8_t *dest, int size)
	Copy data from Flash to Ram Uses flash_read8() to avoid alighnment problems. More...
uint16_t	read_flash16 (uint8_t *p)
	16 bits reads from Flash memory space Uses cpy_flash() to avoid alighnment problems More...
uint32_t	read_flash32 (uint8_t *p)
	32 bits reads from Flash memory space Uses cpy_flash() to avoid alighnment problems More...
uint64_t	read_flash64 (uint8_t *p)
	64 bits reads from Flash memory space Uses cpy_flash() to avoid alighnment problems More...
uint32_t	read_flash_ptr (uint8_t *p)
	Pointer read from Flash memory space Uses cpy_flash() to avoid alighnment problems. More...
int	bittestv (unsigned char *ptr, int off)
	Test bit in byte array. More...
int	bittestxy (unsigned char *ptr, int x, int y, int w, int h)
	Test bit in w * h size bit array usng x and y offsets. More...

Variables
uint32_t	_addr = 0
	Read bit bit value from flash Supports 8 bits reads from memory spaced that must have 32bit aligned data Caches the 32bit read. More...
uint32_t	_data
uint8_t *	p8 = (uint8_t *) &_data

Detailed Description

Flash read and bit test utilities.

Copyright © 2015 Mike Gore, GPL License

You are free to use this code under the terms of GPL

please retain a copy of this notice in any code you use it in.

This is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file flash.c.

Macro Definition Documentation

#define USE_CACHE

Definition at line 33 of file flash.c.

Function Documentation

int bittestv	(	unsigned char *	ptr,
		int	off
	)

Test bit in byte array.

Parameters

[in]	*ptr	byte array
[in]	off	bit offset to test

Returns

1 if bit is set, 0 if not

Definition at line 151 of file flash.c.

Referenced by bittestxy(), and tft_bit_blit().

int bittestxy	(	unsigned char *	ptr,
		int	x,
		int	y,
		int	w,
		int	h
	)

Test bit in w * h size bit array usng x and y offsets.

Parameters

[in]	*ptr	byte array
[in]	x	bit x offset
[in]	y	bit y offset
[in]	w	bit array wide
[in]	h	bit array high

Returns

1 if bit is set, 0 if not

Definition at line 166 of file flash.c.

void cpy_flash	(	uint8_t *	src,
		uint8_t *	dest,
		int	size
	)

Copy data from Flash to Ram Uses flash_read8() to avoid alighnment problems.

Parameters

[in]	*src	address to read from
[out]	*dest	address to write to
[in]	size	number of bytes to copy

Returns

void

Definition at line 89 of file flash.c.

Referenced by font_attr(), read_flash16(), read_flash32(), read_flash64(), read_flash_ptr(), and wire_draw().

uint16_t read_flash16

(

uint8_t *

p

)

16 bits reads from Flash memory space Uses cpy_flash() to avoid alighnment problems

Parameters

[in]

*p

address to read

Returns

uint16_t

Definition at line 103 of file flash.c.

Referenced by user_tests().

uint32_t read_flash32

(

uint8_t *

p

)

32 bits reads from Flash memory space Uses cpy_flash() to avoid alighnment problems

Parameters

[in]

*p

address to read

Returns

uint32_t

Definition at line 115 of file flash.c.

Referenced by user_tests().

uint64_t read_flash64

(

uint8_t *

p

)

64 bits reads from Flash memory space Uses cpy_flash() to avoid alighnment problems

Parameters

[in]

*p

address to read

Returns

uint64_t

Definition at line 127 of file flash.c.

uint8_t read_flash8

(

uint8_t *

p

)

Definition at line 46 of file flash.c.

Referenced by bittestv(), cpy_flash(), read_flash8(), and user_tests().

uint32_t read_flash_ptr

(

uint8_t *

p

)

Pointer read from Flash memory space Uses cpy_flash() to avoid alighnment problems.

Parameters

[in]

*p

address to read

Returns

uint32_t

Definition at line 139 of file flash.c.

Variable Documentation

uint32_t _addr = 0

Read bit bit value from flash Supports 8 bits reads from memory spaced that must have 32bit aligned data Caches the 32bit read.

Parameters

[in]

*p

address to read

Returns

uint8_t

Definition at line 43 of file flash.c.

Referenced by read_flash8().

uint32_t _data

Definition at line 44 of file flash.c.

Referenced by read_flash8().

uint8_t* p8 = (uint8_t *) &_data

Definition at line 45 of file flash.c.

Referenced by read_flash8().