1/* Copyright (c) 2009 Dmitry Xmelkov 2 All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions are met: 6 7 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * Redistributions in binary form must reproduce the above copyright 10 notice, this list of conditions and the following disclaimer in 11 the documentation and/or other materials provided with the 12 distribution. 13 * Neither the name of the copyright holders nor the names of 14 contributors may be used to endorse or promote products derived 15 from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 POSSIBILITY OF SUCH DAMAGE. */ 28 29/* $Id: eerd_word.S 1979 2009-06-05 23:08:14Z dmix $ */ 30 31#ifndef __DOXYGEN__ 32 33#include <avr/io.h> 34 35#if E2END && __AVR_ARCH__ > 1 36 37#include <avr/eeprom.h> 38#include "asmdef.h" 39#include "eedef.h" 40 41/* uint16_t eeprom_read_word (const uint16_t *addr); 42 */ 43 44ENTRY eeprom_read_word 45 46#if __AVR_XMEGA__ 47 48 XCALL eeprom_mapen 49 ld r24, Z 50 ldd r25, Z+1 51 ret 52 53#else 54 55 ldi XL, 24 ; start address to write: r24 56# if RAMEND > 0xFF 57 ldi XH, 0 58# endif 59 60 ldi n_lo, lo8(2) 61# if E2END > 0xFF 62 ldi n_hi, hi8(2) 63# endif 64 65 XJMP eeprom_read_blraw 66 67#endif 68 69ENDFUNC 70 71#endif /* E2END && __AVR_ARCH__ > 1 */ 72#endif /* !__DOXYGEN__ */ 73