mirror of
https://github.com/mariusgreuel/avrdude.git
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209f979c7f
prompted.
avr.c avr.h fileio.c term.c :
Change the avrpart data structure so that the typedef AVRMEM is
used as an index into an array for the sizes of the memory types
and also for pointers to buffers that represent the chip data for
that memory type. This removes a lot of conditional code of the
form:
switch (memtype) {
case AVR_FLASH :
...
}
Also, re-code avr_read_byte() and avr_write_byte() to properly
handle the flash memory type without having to tell them whether
they should program the high byte or the low byte - figure that
out from the address itself. For flash memory type, these
routines now take the actual byte address instead of the word
address. This _greatly_ simplifies many otherwise simple
operations, such a reading or writing a range of memory, by not
having to worry about whether the address starts on an odd byte
or an even byte.
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@45 81a1dc3b-b13d-400b-aceb-764788c761c2
138 lines
4.2 KiB
C
138 lines
4.2 KiB
C
/*
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* Copyright 2000 Brian S. Dean <bsd@bsdhome.com>
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* All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY BRIAN S. DEAN ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BRIAN S. DEAN BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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*/
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/* $Id$ */
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#ifndef __avr_h__
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#define __avr_h__
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#include <stdio.h>
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/*
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* bit definitions for AVR device connections
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*/
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#define AVR_POWER 0xf1 /* bit 0 and 4...7 of data register */
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#define AVR_CLOCK 0x02 /* bit 1 of data register */
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#define AVR_INSTR 0x04 /* bit 2 of data register */
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#define AVR_RESET 0x08 /* bit 3 of data register */
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#define AVR_DATA 0x40 /* bit 6 of status register */
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/*
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* AVR memory designations; the order of these is important, these are
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* used as indexes into statically initialized data, don't change them
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* around.
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*/
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typedef enum {
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AVR_EEPROM,
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AVR_FLASH
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} AVRMEM;
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#define AVR_MAXMEMTYPES 2 /* just flash and eeprom */
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#if 0
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struct avrmem {
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AVRMEM memtype;
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int startaddr;
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int size;
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unsigned char buf;
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struct avrmem * next;
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};
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#endif
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struct avrpart {
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char * partdesc; /* long part name */
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char * optiontag; /* short part name */
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int memsize[AVR_MAXMEMTYPES]; /* sizes for eeprom,
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flash, etc, indexed by
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AVR_EEPROM or AVR_FLASH */
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#if 0
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int flash_size; /* size in bytes of flash */
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int eeprom_size; /* size in bytes of eeprom */
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#endif
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unsigned char f_readback; /* flash write polled readback value */
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unsigned char e_readback[2]; /* eeprom write polled readback values */
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int min_write_delay; /* microseconds */
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int max_write_delay; /* microseconds */
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int chip_erase_delay; /* microseconds */
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unsigned char * mem[AVR_MAXMEMTYPES];
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#if 0
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unsigned char * flash;
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unsigned char * eeprom;
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#endif
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};
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extern struct avrpart parts[];
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int avr_list_parts ( FILE * f, char * prefix );
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struct avrpart * avr_find_part ( char * p );
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int avr_txrx_bit ( int fd, int bit );
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unsigned char avr_txrx ( int fd, unsigned char byte );
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int avr_cmd ( int fd, unsigned char cmd[4], unsigned char res[4] );
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unsigned char avr_read_byte ( int fd, struct avrpart * p,
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AVRMEM memtype, unsigned short addr );
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int avr_read ( int fd, struct avrpart * p, AVRMEM memtype );
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int avr_write_byte ( int fd, struct avrpart * p, AVRMEM memtype,
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unsigned short addr, unsigned char data );
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int avr_write ( int fd, struct avrpart * p, AVRMEM memtype, int size );
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int avr_program_enable ( int fd );
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int avr_chip_erase ( int fd, struct avrpart * p );
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int avr_signature ( int fd, unsigned char sig[4] );
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void avr_powerup ( int fd );
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void avr_powerdown ( int fd );
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int avr_initialize ( int fd, struct avrpart * p );
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char * avr_memtstr ( AVRMEM memtype );
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int avr_initmem ( struct avrpart * p );
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int avr_verify(struct avrpart * p, struct avrpart * v, AVRMEM memtype,
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int size);
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void avr_display ( FILE * f, struct avrpart * p, char * prefix );
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#endif
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