/* prog.c */ /* binwatch - Tiny binary wristwatch. {{{ * * Copyright (C) 2010 Nicolas Schodet * * This program 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 2 of the License, or * (at your option) any later version. * * This program 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, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * Contact : * Web: http://ni.fr.eu.org/ * Email: * }}} */ #include "common.h" #include "bwbootloader.h" #include "prog.h" #include #include void prog_read (uint16_t address, uint8_t *buffer, uint8_t length) { while (length--) *buffer++ = pgm_read_byte (address++); } uint8_t prog_page_write (uint16_t address, const uint8_t *buffer) { /* Bootloader area is protected. */ if (address >= BWBOOTLOADER_LIMIT) return 0; /* Aligned write only. */ if (address % PROG_PAGE_SIZE != 0) return 0; /* No EEPROM or interrupt protection, there is none in this bootloader. */ /* Load page buffer. */ uint16_t w; uint8_t i; for (i = 0; i < PROG_PAGE_SIZE; i += 2) { /* Protect reset vector. */ if (address == 0 && i == 0) { w = pgm_read_word (0); if (AC_BWBOOTLOADER_BOOTSTRAP && w != *(const uint16_t *) (buffer)) return 0; } else w = *(const uint16_t *) (buffer + i); boot_page_fill (address + i, w); } /* Erase page. */ boot_page_erase (address); boot_spm_busy_wait (); /* Program page. */ boot_page_write (address); boot_spm_busy_wait (); /* All done. */ return 1; } void prog_read_fuses (uint8_t *buffer) { buffer[0] = boot_lock_fuse_bits_get (GET_LOW_FUSE_BITS); buffer[1] = boot_lock_fuse_bits_get (GET_HIGH_FUSE_BITS); buffer[2] = boot_lock_fuse_bits_get (GET_EXTENDED_FUSE_BITS); } void prog_start (void) { /* Jump after vectors. */ application_entry (); }