--- /dev/null
+/*
+ * Copyright Droids Corporation, Microb Technology, Eirbot (2005)
+ *
+ * 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
+ *
+ * Revision : $Id: main.c,v 1.9.4.5 2007-06-01 09:37:22 zer0 Exp $
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <aversive.h>
+#include <aversive/error.h>
+
+#include <timer.h>
+#include <scheduler.h>
+#include <time.h>
+
+#include <ax12.h>
+#include <pwm_ng.h>
+#include <pid.h>
+#include <quadramp.h>
+#include <control_system_manager.h>
+#include <trajectory_manager.h>
+#include <blocking_detection_manager.h>
+#include <robot_system.h>
+#include <position_manager.h>
+
+#include <parse.h>
+#include <rdline.h>
+
+#include "strat.h"
+#include "strat_utils.h"
+#include "main.h"
+
+static int32_t l_pwm, r_pwm;
+static int32_t l_enc, r_enc;
+
+static int fdr, fdw;
+
+/* */
+#define FILTER 97
+#define FILTER2 (100-FILTER)
+#define SHIFT 4
+
+void robotsim_dump(void)
+{
+ char buf[BUFSIZ];
+ int len;
+
+ len = snprintf(buf, sizeof(buf), "%d %d %d\n",
+ position_get_x_s16(&mainboard.pos),
+ position_get_y_s16(&mainboard.pos),
+ position_get_a_deg_s16(&mainboard.pos));
+ hostsim_lock();
+ write(fdw, buf, len);
+ hostsim_unlock();
+}
+
+/* must be called periodically */
+void robotsim_update(void)
+{
+ static int32_t l_pwm_shift[SHIFT];
+ static int32_t r_pwm_shift[SHIFT];
+ static int32_t l_speed, r_speed;
+ static unsigned i = 0;
+ static unsigned cpt = 0;
+ int32_t local_l_pwm, local_r_pwm;
+ double x, y, a, a2, d;
+ char cmd = 0;
+
+ /* corners of the robot */
+ double xfl, yfl; /* front left */
+ double xrl, yrl; /* rear left */
+ double xrr, yrr; /* rear right */
+ double xfr, yfr; /* front right */
+
+ /* time shift the command */
+ l_pwm_shift[i] = l_pwm;
+ r_pwm_shift[i] = r_pwm;
+ i ++;
+ i %= SHIFT;
+ local_l_pwm = l_pwm_shift[i];
+ local_r_pwm = r_pwm_shift[i];
+
+ /* read command */
+ if (((cpt ++) & 0x7) == 0) {
+ if (read(fdr, &cmd, 1) != 1)
+ cmd = 0;
+ }
+
+ x = position_get_x_double(&mainboard.pos);
+ y = position_get_y_double(&mainboard.pos);
+ a = position_get_a_rad_double(&mainboard.pos);
+
+ l_speed = ((l_speed * FILTER) / 100) +
+ ((local_l_pwm * 1000 * FILTER2)/1000);
+ r_speed = ((r_speed * FILTER) / 100) +
+ ((local_r_pwm * 1000 * FILTER2)/1000);
+
+ /* basic collision detection */
+ a2 = atan2(ROBOT_WIDTH/2, ROBOT_LENGTH/2);
+ d = norm(ROBOT_WIDTH/2, ROBOT_LENGTH/2);
+
+ xfl = x + cos(a+a2) * d;
+ yfl = y + sin(a+a2) * d;
+ if (!is_in_area(xfl, yfl, 0) && l_speed > 0)
+ l_speed = 0;
+
+ xrl = x + cos(a+M_PI-a2) * d;
+ yrl = y + sin(a+M_PI-a2) * d;
+ if (!is_in_area(xrl, yrl, 0) && l_speed < 0)
+ l_speed = 0;
+
+ xrr = x + cos(a+M_PI+a2) * d;
+ yrr = y + sin(a+M_PI+a2) * d;
+ if (!is_in_area(xrr, yrr, 0) && r_speed < 0)
+ r_speed = 0;
+
+ xfr = x + cos(a-a2) * d;
+ yfr = y + sin(a-a2) * d;
+ if (!is_in_area(xfr, yfr, 0) && r_speed > 0)
+ r_speed = 0;
+
+ /* perturbation */
+ if (cmd == 'l')
+ l_enc += 5000; /* push 1 cm */
+ if (cmd == 'r')
+ r_enc += 5000; /* push 1 cm */
+
+ /* XXX should lock */
+ l_enc += (l_speed / 1000);
+ r_enc += (r_speed / 1000);
+}
+
+void robotsim_pwm(void *arg, int32_t val)
+{
+ // printf("%p, %d\n", arg, val);
+ if (arg == LEFT_PWM)
+ l_pwm = val;
+ else if (arg == RIGHT_PWM)
+ r_pwm = val;
+}
+
+int32_t robotsim_encoder_get(void *arg)
+{
+ if (arg == LEFT_ENCODER)
+ return l_enc;
+ else if (arg == RIGHT_ENCODER)
+ return r_enc;
+ return 0;
+}
+
+int robotsim_init(void)
+{
+ mkfifo("/tmp/.robot_sim2dis", 0600);
+ mkfifo("/tmp/.robot_dis2sim", 0600);
+ fdw = open("/tmp/.robot_sim2dis", O_WRONLY, 0);
+ if (fdw < 0)
+ return -1;
+ fdr = open("/tmp/.robot_dis2sim", O_RDONLY | O_NONBLOCK, 0);
+ if (fdr < 0) {
+ close(fdw);
+ return -1;
+ }
+ return 0;
+}
git.droids-corp.org / aversive.git / blobdiff