From 17cd185559320a20f09ccb3cd7743b96b79dcc4c Mon Sep 17 00:00:00 2001 From: Nicolas Schodet Date: Fri, 4 Apr 2008 20:29:50 +0200 Subject: * digital/io/src, host/inter: - added host support to io. --- digital/io/src/eeprom.avr.c | 121 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 digital/io/src/eeprom.avr.c (limited to 'digital/io/src/eeprom.avr.c') diff --git a/digital/io/src/eeprom.avr.c b/digital/io/src/eeprom.avr.c new file mode 100644 index 00000000..b16130c6 --- /dev/null +++ b/digital/io/src/eeprom.avr.c @@ -0,0 +1,121 @@ +/* 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 0x03 + +/** @} */ + +/* 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); +} -- cgit v1.2.3