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Commit	Line	Data
	1	/* vim:ts=4 sts=4 et tw=80
	2	*
	3	* fnordlicht firmware
	4	*
	5	* for additional information please
	6	* see http://lochraster.org/fnordlichtmini
	7	*
	8	* (c) by Alexander Neumann <alexander@bumpern.de>
	9	* Lars Noschinski <lars@public.noschinski.de>
	10	*
	11	* This program is free software: you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License version 3 as published by
	13	* the Free Software Foundation.
	14	*
	15	* This program is distributed in the hope that it will be useful, but WITHOUT
	16	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	17	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	18	* more details.
	19	*
	20	* You should have received a copy of the GNU General Public License along with
	21	* this program. If not, see <http://www.gnu.org/licenses/>.
	22	*/
	23
	24	#ifndef PWM_H
	25	#define PWM_H
	26
	27	#include "timer.h"
	28	#include "color.h"
	29
	30	#if PWM_CHANNELS != 3
	31	#error "PWM_CHANNELS is not 3, this is unsupported!"
	32	#endif
	33
	34	#define PWM_HSV_SIZE sizeof(struct hsv_color_t)
	35
	36	struct global_pwm_t
	37	{
	38	/* current color */
	39	struct rgb_color_t current;
	40
	41	/* target for fading engine */
	42	struct dual_color_t target;
	43
	44	/* delay and step for fading engine */
	45	uint8_t fade_delay[PWM_CHANNELS];
	46	uint8_t fade_step[PWM_CHANNELS];
	47	};
	48
	49	extern struct global_pwm_t global_pwm;
	50
	51	/* prototypes */
	52	void pwm_init(void);
	53	void pwm_poll(void);
	54	void pwm_poll_fading(void);
	55
	56	void pwm_fade_rgb(struct rgb_color_t *color, uint8_t step, uint8_t delay);
	57	void pwm_fade_hsv(struct hsv_color_t *color, uint8_t step, uint8_t delay);
	58
	59	/* return true if fading process is complete */
	60	bool pwm_target_reached(void);
	61
	62	/* convert hsv to rgb color */
	63	void pwm_hsv2rgb(struct dual_color_t *color);
	64	/* convert rgb to hsv color */
	65	void pwm_rgb2hsv(struct dual_color_t *color);
	66
	67	/* stop fading, hold current color */
	68	void pwm_stop_fading(void);
	69
	70	/* modify color */
	71	void pwm_modify_rgb(struct rgb_color_offset_t *color, uint8_t step, uint8_t delay);
	72	void pwm_modify_hsv(struct hsv_color_offset_t *color, uint8_t step, uint8_t delay);
	73
	74	#endif