/* test_counter.c */ /* asserv - Position & speed motor control on AVR. {{{ * * Copyright (C) 2008 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 "modules/utils/utils.h" #include "modules/uart/uart.h" #include "modules/proto/proto.h" #include "timer.h" #include "misc.h" #include "counter_ext.avr.c" uint8_t read, read_cpt; uint8_t ind, ind_cpt, ind_init; uint8_t count, count_cpt; int main (void) { uint8_t old_ind = 0; const int total = 5000; LED_SETUP; timer_init (); counter_init (); uart0_init (); proto_send0 ('z'); sei (); while (1) { timer_wait (); if (count) counter_update (); if (read && !--read_cpt) { proto_send2b ('r', counter_read (0), counter_read (3)); read_cpt = read; } if (ind && !--ind_cpt) { uint8_t i = counter_read (3); if (!ind_init && i != old_ind) { uint8_t eip = old_ind + total; uint8_t eim = old_ind - total; proto_send7b ('i', old_ind, i, eip, eim, i - eip, i - eim, i == eip || i == eim); } old_ind = i; ind_init = 0; ind_cpt = ind; } if (count && !--count_cpt) { proto_send3w ('C', counter_left, counter_right, counter_aux0); count_cpt = count; } while (uart0_poll ()) proto_accept (uart0_getc ()); } } /** Handle incoming messages. */ void proto_callback (uint8_t cmd, uint8_t size, uint8_t *args) { #define c(cmd, size) (cmd << 8 | size) switch (c (cmd, size)) { case c ('z', 0): /* Reset. */ utils_reset (); break; case c ('r', 1): read_cpt = read = args[0]; break; case c ('i', 1): ind_cpt = ind = args[0]; ind_init = 1; break; case c ('C', 1): count_cpt = count = args[0]; break; default: proto_send0 ('?'); return; } proto_send (cmd, size, args); #undef c }