/* eeprom.avr.c - Save parameters to internal EEPROM. */ /* asserv - Position & speed motor control on AVR. {{{ * * Copyright (C) 2005 Nicolas Schodet * * 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/utils/byte.h" #include #include "counter.h" #include "pwm.h" #include "pos.h" #include "speed.h" #define EEPROM_START 0 /* WARNING: * If you change EEPROM format, be sure to change the EEPROM_KEY in header if * your new format is not compatible with the old one or you will load * garbages in parameters. */ /* Read parameters from eeprom. */ void eeprom_read_params (void) { uint8_t *p8 = (uint8_t *) EEPROM_START; uint16_t *p16; if (eeprom_read_byte (p8++) != EEPROM_KEY) return; speed_aux[0].max = eeprom_read_byte (p8++); speed_aux[1].max = eeprom_read_byte (p8++); speed_aux[0].slow = eeprom_read_byte (p8++); speed_aux[1].slow = eeprom_read_byte (p8++); pwm_set_reverse (eeprom_read_byte (p8++)); p16 = (uint16_t *) p8; speed_aux[0].acc = eeprom_read_word (p16++); speed_aux[1].acc = eeprom_read_word (p16++); pos_aux[0].kp = eeprom_read_word (p16++); pos_aux[1].kp = eeprom_read_word (p16++); pos_aux[0].ki = eeprom_read_word (p16++); pos_aux[1].ki = eeprom_read_word (p16++); pos_aux[0].kd = eeprom_read_word (p16++); pos_aux[1].kd = eeprom_read_word (p16++); pos_aux[0].blocked_error_limit = eeprom_read_word (p16++); pos_aux[0].blocked_speed_limit = eeprom_read_word (p16++); pos_aux[0].blocked_counter_limit = eeprom_read_word (p16++); pos_aux[1].blocked_error_limit = eeprom_read_word (p16++); pos_aux[1].blocked_speed_limit = eeprom_read_word (p16++); pos_aux[1].blocked_counter_limit = eeprom_read_word (p16++); pos_e_sat = eeprom_read_word (p16++); pos_i_sat = eeprom_read_word (p16++); pos_d_sat = eeprom_read_word (p16++); } /* Write parameters to eeprom. */ void eeprom_write_params (void) { uint8_t *p8 = (uint8_t *) EEPROM_START; uint16_t *p16; eeprom_write_byte (p8++, EEPROM_KEY); eeprom_write_byte (p8++, speed_aux[0].max); eeprom_write_byte (p8++, speed_aux[1].max); eeprom_write_byte (p8++, speed_aux[0].slow); eeprom_write_byte (p8++, speed_aux[1].slow); eeprom_write_byte (p8++, pwm_reverse); p16 = (uint16_t *) p8; eeprom_write_word (p16++, speed_aux[0].acc); eeprom_write_word (p16++, speed_aux[1].acc); eeprom_write_word (p16++, pos_aux[0].kp); eeprom_write_word (p16++, pos_aux[1].kp); eeprom_write_word (p16++, pos_aux[0].ki); eeprom_write_word (p16++, pos_aux[1].ki); eeprom_write_word (p16++, pos_aux[0].kd); eeprom_write_word (p16++, pos_aux[1].kd); eeprom_write_word (p16++, pos_aux[0].blocked_error_limit); eeprom_write_word (p16++, pos_aux[0].blocked_speed_limit); eeprom_write_word (p16++, pos_aux[0].blocked_counter_limit); eeprom_write_word (p16++, pos_aux[1].blocked_error_limit); eeprom_write_word (p16++, pos_aux[1].blocked_speed_limit); eeprom_write_word (p16++, pos_aux[1].blocked_counter_limit); eeprom_write_word (p16++, pos_e_sat); eeprom_write_word (p16++, pos_i_sat); eeprom_write_word (p16++, pos_d_sat); } /* Clear eeprom parameters. */ void eeprom_clear_params (void) { uint8_t *p = (uint8_t *) EEPROM_START; eeprom_write_byte (p, 0xff); }