#ifndef pwm_h #define pwm_h /* pwm.h */ /* io-hub - Modular Input/Output. {{{ * * Copyright (C) 2011 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. * * }}} */ /** Handle PWM output with direction. Also handle timed PWM setting to apply * a PWM value for a given number of update, then switch to a resting value. * * AC_IOHUB_PWM should be set to a list of space separated PWM macro call: * * PWM (timer, pwm, pwm_io_port, pwm_io_n, dir_io_port, dir_io_n) * * For example: * * PWM (1, A, B, 1, B, 2) => use output compare A on timer 1, PWM output on * B1, direction on B2. */ /** Maximum positive value. */ #define PWM_MAX 0x3ff /** Initialise PWM module. */ void pwm_init (void); /** Update PWM module (handle timed PWM). */ void pwm_update (void); /** Set PWM value for given PWM index. */ void pwm_set (uint8_t index, int16_t value); /** Set PWM value for given PWM index for a given time. After time elapsed, * use a rest value. */ void pwm_set_timed (uint8_t index, int16_t value, uint16_t time, int16_t value_rest); #endif /* pwm_h */