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63c1e8ba00
Add lws_display and minimal example support for esp32-wrover to match wsp32-heltec-wb32 Since no usable buttons that don't affect something else on wrover kit, assumes a button to 0V on GPIO14.
80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/*
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* esp32 / esp-idf pwm
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*
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* Copyright (C) 2019 - 2020 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "private-lib-core.h"
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#include "soc/ledc_reg.h"
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#include "driver/ledc.h"
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static const ledc_timer_config_t tc = {
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.speed_mode = LEDC_HIGH_SPEED_MODE,
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.duty_resolution = LEDC_TIMER_13_BIT,
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.timer_num = LEDC_TIMER_0,
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.freq_hz = 5000,
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.clk_cfg = LEDC_AUTO_CLK
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};
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int
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lws_pwm_plat_init(const struct lws_pwm_ops *lo)
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{
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ledc_channel_config_t lc = {
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.duty = 8191,
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.intr_type = LEDC_INTR_FADE_END,
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.speed_mode = LEDC_HIGH_SPEED_MODE,
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.timer_sel = LEDC_TIMER_0,
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};
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size_t n;
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ledc_timer_config(&tc);
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for (n = 0; n < lo->count_pwm_map; n++) {
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lc.channel = LEDC_CHANNEL_0 + lo->pwm_map[n].index;
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lc.gpio_num = lo->pwm_map[n].gpio;
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ledc_channel_config(&lc);
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ledc_set_duty(LEDC_HIGH_SPEED_MODE, lc.channel, 0);
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ledc_update_duty(LEDC_HIGH_SPEED_MODE, lc.channel);
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}
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return 0;
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}
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void
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lws_pwm_plat_intensity(const struct lws_pwm_ops *lo, _lws_plat_gpio_t gpio,
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lws_led_intensity_t inten)
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{
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size_t n;
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for (n = 0; n < lo->count_pwm_map; n++) {
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if (lo->pwm_map[n].gpio == gpio) {
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if (!lo->pwm_map[n].active_level)
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inten = 65535 - inten;
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ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_0 +
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lo->pwm_map[n].index, inten >> 3);
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ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_0 +
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lo->pwm_map[n].index);
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return;
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}
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}
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lwsl_err("%s: unknown gpio for pwm\n", __func__);
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}
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