/* 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 "servo.h" /* SERVO_NUMBER */ #include "trap.h" /* trap_high_time_pos */ #include "sharp.h" /* sharp_threshold */ #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. */ #define EEPROM_PARAM_KEY 0x04 /** @} */ /* Load parameters from the EEPROM. */ void eeprom_load_param () { uint8_t compt; uint16_t *ptr16; /* 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 trap module data */ /* Extreme position of the servos motor (high time value of the PWM) */ for (compt = 0; compt < SERVO_NUMBER; compt++) { trap_high_time_pos[0][compt] = eeprom_read_byte(ptr8++); trap_high_time_pos[1][compt] = eeprom_read_byte(ptr8++); } /* Load sharp module data */ ptr16 = (uint16_t *) ptr8; /* Threshold values, high and low */ for (compt = 0; compt < SHARP_NUMBER; compt++) { sharp_threshold[compt][0] = eeprom_read_word (ptr16++); sharp_threshold[compt][1] = eeprom_read_word (ptr16++); } } /* Store parameters in the EEPROM. */ void eeprom_save_param () { uint8_t compt; uint16_t *ptr16; /* 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 trap module data */ /* Extreme position of the servos motor (high time value of the PWM) */ for (compt = 0; compt < SERVO_NUMBER; compt++) { eeprom_write_byte (ptr8++, trap_high_time_pos[0][compt]); eeprom_write_byte (ptr8++, trap_high_time_pos[1][compt]); } /* Store sharp module data */ ptr16 = (uint16_t *) ptr8; /* Threshold values, high and low */ for (compt = 0; compt < SHARP_NUMBER; compt++) { eeprom_write_word (ptr16++, sharp_threshold[compt][0]); eeprom_write_word (ptr16++, sharp_threshold[compt][1]); } } /* 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); }