/* eeprom.avr.c */ /* io - Input & Output with Artificial Intelligence (ai) support on AVR. {{{ * * Copyright (C) 2008 Dufour Jérémy * * APBTeam: * Web: http://apbteam.org/ * Email: team AT apbteam DOT org * * 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. * * }}} */ #include "common.h" #include "eeprom.h" #include "modules/devices/servo/servo.h" #include "modules/devices/servo/servo_pos.h" #include /* eeprom_{read,write}_byte */ /** * @defgroup EepromPrivate EEPROM module private variables and functions * declarations * @{ */ /** * What is the address, in the EEPROM, where are stored the parameters values? */ #define EEPROM_PARAM_START 0 /** * Current version of the parameters organization. * @warning: you must update this value every time you change the structure of * data stored into the EEPROM. */ #define EEPROM_PARAM_KEY 0x07 /** @} */ /* Load parameters from the EEPROM. */ void eeprom_load_param () { uint8_t compt; uint8_t pos; /* The parameters start at the given address */ uint8_t *ptr8 = (uint8_t *) EEPROM_PARAM_START; /* Check if the key/version is correct */ if (eeprom_read_byte (ptr8++) != EEPROM_PARAM_KEY) /* Error, stop here */ return; /* Load servo pos module data */ for (compt = 0; compt < SERVO_NUMBER; compt++) { for (pos = 0; pos < SERVO_POS_NUMBER; pos++) servo_pos_high_time[compt][pos] = eeprom_read_byte(ptr8++); } } /* Store parameters in the EEPROM. */ void eeprom_save_param () { uint8_t compt, pos; /* The parameters start at the given address */ uint8_t *ptr8 = (uint8_t *) EEPROM_PARAM_START; /* Store the key */ eeprom_write_byte (ptr8++, EEPROM_PARAM_KEY); /* Store servo pos module data */ for (compt = 0; compt < SERVO_NUMBER; compt++) { for (pos = 0; pos < SERVO_POS_NUMBER; pos++) eeprom_write_byte (ptr8++, servo_pos_high_time[compt][pos]); } } /* Clear parameters in the EEPROM by invalidating the key. */ void eeprom_clear_param () { /* Write an invalid key */ eeprom_write_byte ((uint8_t *) EEPROM_PARAM_START, 0xFF); }