1 /* 2 * Generic PWM controller ops 3 * 4 * Copyright (C) 2019 - 2020 Andy Green <andy@warmcat.com> 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 22 * IN THE SOFTWARE. 23 */ 24 25 typedef struct lws_pwm_map { 26 _lws_plat_gpio_t gpio; 27 uint8_t index; 28 uint8_t active_level; 29 } lws_pwm_map_t; 30 31 typedef struct lws_pwm_ops { 32 int (*init)(const struct lws_pwm_ops *lo); 33 void (*intensity)(const struct lws_pwm_ops *lo, _lws_plat_gpio_t gpio, 34 lws_led_intensity_t inten); 35 const lws_pwm_map_t *pwm_map; 36 uint8_t count_pwm_map; 37 } lws_pwm_ops_t; 38 39 LWS_VISIBLE LWS_EXTERN int 40 lws_pwm_plat_init(const struct lws_pwm_ops *lo); 41 42 LWS_VISIBLE LWS_EXTERN void 43 lws_pwm_plat_intensity(const struct lws_pwm_ops *lo, _lws_plat_gpio_t gpio, 44 lws_led_intensity_t inten); 45 46 #define lws_pwm_plat_ops \ 47 .init = lws_pwm_plat_init, \ 48 .intensity = lws_pwm_plat_intensity 49 50 /* 51 * May be useful for making your own transitions or sequences 52 */ 53 54 LWS_VISIBLE LWS_EXTERN lws_led_intensity_t 55 lws_led_func_linear(lws_led_seq_phase_t n); 56 LWS_VISIBLE LWS_EXTERN lws_led_intensity_t 57 lws_led_func_sine(lws_led_seq_phase_t n); 58 59 /* canned sequences that can work out of the box */ 60 61 extern const lws_led_sequence_def_t lws_pwmseq_sine_endless_slow, 62 lws_pwmseq_sine_endless_fast, 63 lws_pwmseq_linear_wipe, 64 lws_pwmseq_sine_up, lws_pwmseq_sine_down, 65 lws_pwmseq_static_on, 66 lws_pwmseq_static_half, 67 lws_pwmseq_static_off; 68