896 lines
39 KiB
C
896 lines
39 KiB
C
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <string.h>
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#include <esp_types.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/semphr.h"
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#include "freertos/xtensa_api.h"
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#include "esp_log.h"
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#include "soc/gpio_periph.h"
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#include "soc/ledc_periph.h"
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#include "soc/rtc.h"
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#include "hal/ledc_hal.h"
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#include "driver/ledc.h"
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#include "esp_rom_gpio.h"
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static const char* LEDC_TAG = "ledc";
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#define LEDC_CHECK(a, str, ret_val) \
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if (!(a)) { \
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ESP_LOGE(LEDC_TAG, "%s(%d): %s", __FUNCTION__, __LINE__, str); \
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return (ret_val); \
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}
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#define LEDC_ARG_CHECK(a, param) LEDC_CHECK(a, param " argument is invalid", ESP_ERR_INVALID_ARG)
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typedef struct {
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ledc_mode_t speed_mode;
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ledc_duty_direction_t direction;
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uint32_t target_duty;
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int cycle_num;
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int scale;
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ledc_fade_mode_t mode;
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xSemaphoreHandle ledc_fade_sem;
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xSemaphoreHandle ledc_fade_mux;
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#if CONFIG_SPIRAM_USE_MALLOC
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StaticQueue_t ledc_fade_sem_storage;
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#endif
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} ledc_fade_t;
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typedef struct {
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ledc_hal_context_t ledc_hal; /*!< LEDC hal context*/
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} ledc_obj_t;
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static ledc_obj_t *p_ledc_obj[LEDC_SPEED_MODE_MAX] = {0};
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static ledc_fade_t *s_ledc_fade_rec[LEDC_SPEED_MODE_MAX][LEDC_CHANNEL_MAX];
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static ledc_isr_handle_t s_ledc_fade_isr_handle = NULL;
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static portMUX_TYPE ledc_spinlock = portMUX_INITIALIZER_UNLOCKED;
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#define LEDC_VAL_NO_CHANGE (-1)
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#define LEDC_STEP_NUM_MAX (1023)
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#define LEDC_DUTY_DECIMAL_BIT_NUM (4)
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#define LEDC_TIMER_DIV_NUM_MAX (0x3FFFF)
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#define LEDC_DUTY_NUM_MAX (LEDC_DUTY_NUM_LSCH0_V)
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#define LEDC_DUTY_CYCLE_MAX (LEDC_DUTY_CYCLE_LSCH0_V)
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#define LEDC_DUTY_SCALE_MAX (LEDC_DUTY_SCALE_LSCH0_V)
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#define LEDC_HPOINT_VAL_MAX (LEDC_HPOINT_LSCH1_V)
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#define DELAY_CLK8M_CLK_SWITCH (5)
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#define SLOW_CLK_CYC_CALIBRATE (13)
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#define LEDC_FADE_TOO_SLOW_STR "LEDC FADE TOO SLOW"
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#define LEDC_FADE_TOO_FAST_STR "LEDC FADE TOO FAST"
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static const char *LEDC_NOT_INIT = "LEDC is not initialized";
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static const char *LEDC_FADE_SERVICE_ERR_STR = "LEDC fade service not installed";
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static const char *LEDC_FADE_INIT_ERROR_STR = "LEDC fade channel init error, not enough memory or service not installed";
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//This value will be calibrated when in use.
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static uint32_t s_ledc_slow_clk_8M = 0;
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static void ledc_ls_timer_update(ledc_mode_t speed_mode, ledc_timer_t timer_sel)
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{
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if (speed_mode == LEDC_LOW_SPEED_MODE) {
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ledc_hal_ls_timer_update(&(p_ledc_obj[speed_mode]->ledc_hal), timer_sel);
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}
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}
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static IRAM_ATTR void ledc_ls_channel_update(ledc_mode_t speed_mode, ledc_channel_t channel)
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{
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if (speed_mode == LEDC_LOW_SPEED_MODE) {
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ledc_hal_ls_channel_update(&(p_ledc_obj[speed_mode]->ledc_hal), channel);
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}
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}
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//We know that CLK8M is about 8M, but don't know the actual value. So we need to do a calibration.
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static bool ledc_slow_clk_calibrate(void)
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{
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#ifdef CONFIG_IDF_TARGET_ESP32
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//Enable CLK8M for LEDC
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SET_PERI_REG_MASK(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_DIG_CLK8M_EN_M);
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//Waiting for CLK8M to turn on
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ets_delay_us(DELAY_CLK8M_CLK_SWITCH);
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uint32_t cal_val = rtc_clk_cal(RTC_CAL_8MD256, SLOW_CLK_CYC_CALIBRATE);
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if(cal_val == 0) {
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ESP_LOGE(LEDC_TAG, "CLK8M_CLK calibration failed");
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return false;
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}
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s_ledc_slow_clk_8M = 1000000ULL * (1 << RTC_CLK_CAL_FRACT) * 256 / cal_val;
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ESP_LOGD(LEDC_TAG, "Calibrate CLK8M_CLK : %d Hz", s_ledc_slow_clk_8M);
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return true;
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#else
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ESP_LOGE(LEDC_TAG, "CLK8M source currently only supported on ESP32");
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return false;
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#endif
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}
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static uint32_t ledc_get_src_clk_freq(ledc_clk_cfg_t clk_cfg)
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{
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uint32_t src_clk_freq = 0;
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if (clk_cfg == LEDC_USE_APB_CLK) {
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src_clk_freq = LEDC_APB_CLK_HZ;
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} else if (clk_cfg == LEDC_USE_REF_TICK) {
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src_clk_freq = LEDC_REF_CLK_HZ;
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} else if (clk_cfg == LEDC_USE_RTC8M_CLK) {
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src_clk_freq = s_ledc_slow_clk_8M;
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#ifdef CONFIG_IDF_TARGET_ESP32S2
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} else if (clk_cfg == LEDC_USE_XTAL_CLK) {
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src_clk_freq = rtc_clk_xtal_freq_get() * 1000000;
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#endif
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}
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return src_clk_freq;
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}
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static esp_err_t ledc_enable_intr_type(ledc_mode_t speed_mode, ledc_channel_t channel, ledc_intr_type_t type)
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{
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portENTER_CRITICAL(&ledc_spinlock);
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if (type == LEDC_INTR_FADE_END) {
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ledc_hal_set_fade_end_intr(&(p_ledc_obj[speed_mode]->ledc_hal), channel, true);
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} else {
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ledc_hal_set_fade_end_intr(&(p_ledc_obj[speed_mode]->ledc_hal), channel, false);
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}
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portEXIT_CRITICAL(&ledc_spinlock);
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return ESP_OK;
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}
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static void _ledc_fade_hw_acquire(ledc_mode_t mode, ledc_channel_t channel)
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{
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ledc_fade_t* fade = s_ledc_fade_rec[mode][channel];
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if (fade) {
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xSemaphoreTake(fade->ledc_fade_sem, portMAX_DELAY);
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ledc_enable_intr_type(mode, channel, LEDC_INTR_DISABLE);
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}
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}
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static void _ledc_fade_hw_release(ledc_mode_t mode, ledc_channel_t channel)
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{
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ledc_fade_t* fade = s_ledc_fade_rec[mode][channel];
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if (fade) {
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xSemaphoreGive(fade->ledc_fade_sem);
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}
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}
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static void _ledc_op_lock_acquire(ledc_mode_t mode, ledc_channel_t channel)
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{
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ledc_fade_t* fade = s_ledc_fade_rec[mode][channel];
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if (fade) {
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xSemaphoreTake(fade->ledc_fade_mux, portMAX_DELAY);
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}
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}
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static void _ledc_op_lock_release(ledc_mode_t mode, ledc_channel_t channel)
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{
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ledc_fade_t* fade = s_ledc_fade_rec[mode][channel];
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if (fade) {
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xSemaphoreGive(fade->ledc_fade_mux);
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}
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}
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static int ledc_get_max_duty(ledc_mode_t speed_mode, ledc_channel_t channel)
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{
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// The arguments are checked before internally calling this function.
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uint32_t max_duty;
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ledc_hal_get_max_duty(&(p_ledc_obj[speed_mode]->ledc_hal), channel, &max_duty);
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return max_duty;
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}
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esp_err_t ledc_timer_set(ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t clock_divider, uint32_t duty_resolution,
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ledc_clk_src_t clk_src)
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{
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LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
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LEDC_ARG_CHECK(timer_sel < LEDC_TIMER_MAX, "timer_select");
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LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
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portENTER_CRITICAL(&ledc_spinlock);
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ledc_hal_set_clock_divider(&(p_ledc_obj[speed_mode]->ledc_hal), timer_sel, clock_divider);
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ledc_hal_set_clock_source(&(p_ledc_obj[speed_mode]->ledc_hal), timer_sel, clk_src);
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ledc_hal_set_duty_resolution(&(p_ledc_obj[speed_mode]->ledc_hal), timer_sel, duty_resolution);
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ledc_ls_timer_update(speed_mode, timer_sel);
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portEXIT_CRITICAL(&ledc_spinlock);
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return ESP_OK;
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}
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static IRAM_ATTR esp_err_t ledc_duty_config(ledc_mode_t speed_mode, ledc_channel_t channel, int hpoint_val, int duty_val,
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ledc_duty_direction_t duty_direction, uint32_t duty_num, uint32_t duty_cycle, uint32_t duty_scale)
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{
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portENTER_CRITICAL(&ledc_spinlock);
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if (hpoint_val >= 0) {
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ledc_hal_set_hpoint(&(p_ledc_obj[speed_mode]->ledc_hal), channel, hpoint_val);
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}
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if (duty_val >= 0) {
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ledc_hal_set_duty_int_part(&(p_ledc_obj[speed_mode]->ledc_hal), channel, duty_val);
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}
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ledc_hal_set_duty_direction(&(p_ledc_obj[speed_mode]->ledc_hal), channel, duty_direction);
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ledc_hal_set_duty_num(&(p_ledc_obj[speed_mode]->ledc_hal), channel, duty_num);
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ledc_hal_set_duty_cycle(&(p_ledc_obj[speed_mode]->ledc_hal), channel, duty_cycle);
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ledc_hal_set_duty_scale(&(p_ledc_obj[speed_mode]->ledc_hal), channel, duty_scale);
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ledc_ls_channel_update(speed_mode, channel);
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portEXIT_CRITICAL(&ledc_spinlock);
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return ESP_OK;
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}
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esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, ledc_channel_t channel, ledc_timer_t timer_sel)
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{
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LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
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LEDC_ARG_CHECK(timer_sel < LEDC_TIMER_MAX, "timer_select");
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LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
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portENTER_CRITICAL(&ledc_spinlock);
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ledc_hal_bind_channel_timer(&(p_ledc_obj[speed_mode]->ledc_hal), channel, timer_sel);
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ledc_ls_channel_update(speed_mode, channel);
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portEXIT_CRITICAL(&ledc_spinlock);
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return ESP_OK;
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}
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esp_err_t ledc_timer_rst(ledc_mode_t speed_mode, ledc_timer_t timer_sel)
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{
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LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
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LEDC_ARG_CHECK(timer_sel < LEDC_TIMER_MAX, "timer_select");
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LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
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portENTER_CRITICAL(&ledc_spinlock);
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ledc_hal_timer_rst(&(p_ledc_obj[speed_mode]->ledc_hal), timer_sel);
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ledc_ls_timer_update(speed_mode, timer_sel);
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portEXIT_CRITICAL(&ledc_spinlock);
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return ESP_OK;
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}
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esp_err_t ledc_timer_pause(ledc_mode_t speed_mode, ledc_timer_t timer_sel)
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{
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LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
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LEDC_ARG_CHECK(timer_sel < LEDC_TIMER_MAX, "timer_select");
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LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
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portENTER_CRITICAL(&ledc_spinlock);
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ledc_hal_timer_pause(&(p_ledc_obj[speed_mode]->ledc_hal), timer_sel);
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ledc_ls_timer_update(speed_mode, timer_sel);
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portEXIT_CRITICAL(&ledc_spinlock);
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return ESP_OK;
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}
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esp_err_t ledc_timer_resume(ledc_mode_t speed_mode, ledc_timer_t timer_sel)
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{
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LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
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LEDC_ARG_CHECK(timer_sel < LEDC_TIMER_MAX, "timer_select");
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LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
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portENTER_CRITICAL(&ledc_spinlock);
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ledc_hal_timer_resume(&(p_ledc_obj[speed_mode]->ledc_hal), timer_sel);
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ledc_ls_timer_update(speed_mode, timer_sel);
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portEXIT_CRITICAL(&ledc_spinlock);
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return ESP_OK;
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}
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esp_err_t ledc_isr_register(void (*fn)(void*), void * arg, int intr_alloc_flags, ledc_isr_handle_t *handle)
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{
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esp_err_t ret;
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LEDC_ARG_CHECK(fn, "fn");
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portENTER_CRITICAL(&ledc_spinlock);
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ret = esp_intr_alloc(ETS_LEDC_INTR_SOURCE, intr_alloc_flags, fn, arg, handle);
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portEXIT_CRITICAL(&ledc_spinlock);
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return ret;
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}
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// Setting the LEDC timer divisor with the given source clock, frequency and resolution.
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static esp_err_t ledc_set_timer_div(ledc_mode_t speed_mode, ledc_timer_t timer_num, ledc_clk_cfg_t clk_cfg, int freq_hz, int duty_resolution)
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{
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uint32_t div_param = 0;
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uint32_t precision = ( 0x1 << duty_resolution );
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ledc_clk_src_t timer_clk_src = LEDC_APB_CLK;
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// Calculate the divisor
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// User specified source clock(RTC8M_CLK) for low speed channel
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if ((speed_mode == LEDC_LOW_SPEED_MODE) && (clk_cfg == LEDC_USE_RTC8M_CLK)) {
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if(s_ledc_slow_clk_8M == 0) {
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if (ledc_slow_clk_calibrate() == false) {
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goto error;
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}
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}
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div_param = ( (uint64_t) s_ledc_slow_clk_8M << 8 ) / freq_hz / precision;
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} else {
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// Automatically select APB or REF_TICK as the source clock.
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if (clk_cfg == LEDC_AUTO_CLK) {
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// Try calculating divisor based on LEDC_APB_CLK
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div_param = ( (uint64_t) LEDC_APB_CLK_HZ << 8 ) / freq_hz / precision;
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if (div_param > LEDC_TIMER_DIV_NUM_MAX) {
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// APB_CLK results in divisor which too high. Try using REF_TICK as clock source.
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timer_clk_src = LEDC_REF_TICK;
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div_param = ((uint64_t) LEDC_REF_CLK_HZ << 8) / freq_hz / precision;
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} else if (div_param < 256) {
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// divisor is too low
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goto error;
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}
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// User specified source clock(LEDC_APB_CLK_HZ or LEDC_REF_TICK)
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} else {
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timer_clk_src = (clk_cfg == LEDC_USE_REF_TICK) ? LEDC_REF_TICK : LEDC_APB_CLK;
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uint32_t src_clk_freq = ledc_get_src_clk_freq(clk_cfg);
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div_param = ( (uint64_t) src_clk_freq << 8 ) / freq_hz / precision;
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}
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}
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if (div_param < 256 || div_param > LEDC_TIMER_DIV_NUM_MAX) {
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goto error;
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}
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if (speed_mode == LEDC_LOW_SPEED_MODE) {
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portENTER_CRITICAL(&ledc_spinlock);
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ledc_hal_set_slow_clk(&(p_ledc_obj[speed_mode]->ledc_hal), clk_cfg);
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portEXIT_CRITICAL(&ledc_spinlock);
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}
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//Set the divisor
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ledc_timer_set(speed_mode, timer_num, div_param, duty_resolution, timer_clk_src);
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// reset the timer
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ledc_timer_rst(speed_mode, timer_num);
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return ESP_OK;
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error:
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ESP_LOGE(LEDC_TAG, "requested frequency and duty resolution can not be achieved, try reducing freq_hz or duty_resolution. div_param=%d",
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(uint32_t ) div_param);
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return ESP_FAIL;
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}
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esp_err_t ledc_timer_config(const ledc_timer_config_t* timer_conf)
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{
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LEDC_ARG_CHECK(timer_conf != NULL, "timer_conf");
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uint32_t freq_hz = timer_conf->freq_hz;
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uint32_t duty_resolution = timer_conf->duty_resolution;
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uint32_t timer_num = timer_conf->timer_num;
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uint32_t speed_mode = timer_conf->speed_mode;
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LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
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LEDC_ARG_CHECK(!((timer_conf->clk_cfg == LEDC_USE_RTC8M_CLK) && (speed_mode != LEDC_LOW_SPEED_MODE)), "Only low speed channel support RTC8M_CLK");
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periph_module_enable(PERIPH_LEDC_MODULE);
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if (freq_hz == 0 || duty_resolution == 0 || duty_resolution >= LEDC_TIMER_BIT_MAX) {
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ESP_LOGE(LEDC_TAG, "freq_hz=%u duty_resolution=%u", freq_hz, duty_resolution);
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return ESP_ERR_INVALID_ARG;
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}
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if (timer_num > LEDC_TIMER_3) {
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ESP_LOGE(LEDC_TAG, "invalid timer #%u", timer_num);
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return ESP_ERR_INVALID_ARG;
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}
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if(p_ledc_obj[speed_mode] == NULL) {
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p_ledc_obj[speed_mode] = (ledc_obj_t *) heap_caps_calloc(1, sizeof(ledc_obj_t), MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
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ledc_hal_init(&(p_ledc_obj[speed_mode]->ledc_hal), speed_mode);
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}
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return ledc_set_timer_div(speed_mode, timer_num, timer_conf->clk_cfg, freq_hz, duty_resolution);
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}
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esp_err_t ledc_set_pin(int gpio_num, ledc_mode_t speed_mode, ledc_channel_t ledc_channel)
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{
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LEDC_ARG_CHECK(ledc_channel < LEDC_CHANNEL_MAX, "ledc_channel");
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LEDC_ARG_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(gpio_num), "gpio_num");
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LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
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PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[gpio_num], PIN_FUNC_GPIO);
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gpio_set_direction(gpio_num, GPIO_MODE_OUTPUT);
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esp_rom_gpio_connect_out_signal(gpio_num, ledc_periph_signal[speed_mode].sig_out0_idx + ledc_channel, 0, 0);
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return ESP_OK;
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}
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|
esp_err_t ledc_channel_config(const ledc_channel_config_t* ledc_conf)
|
|
{
|
|
LEDC_ARG_CHECK(ledc_conf, "ledc_conf");
|
|
uint32_t speed_mode = ledc_conf->speed_mode;
|
|
uint32_t gpio_num = ledc_conf->gpio_num;
|
|
uint32_t ledc_channel = ledc_conf->channel;
|
|
uint32_t timer_select = ledc_conf->timer_sel;
|
|
uint32_t intr_type = ledc_conf->intr_type;
|
|
uint32_t duty = ledc_conf->duty;
|
|
uint32_t hpoint = ledc_conf->hpoint;
|
|
LEDC_ARG_CHECK(ledc_channel < LEDC_CHANNEL_MAX, "ledc_channel");
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(gpio_num), "gpio_num");
|
|
LEDC_ARG_CHECK(timer_select < LEDC_TIMER_MAX, "timer_select");
|
|
periph_module_enable(PERIPH_LEDC_MODULE);
|
|
esp_err_t ret = ESP_OK;
|
|
|
|
if(p_ledc_obj[speed_mode] == NULL) {
|
|
p_ledc_obj[speed_mode] = (ledc_obj_t *) heap_caps_calloc(1, sizeof(ledc_obj_t), MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
|
|
ledc_hal_init(&(p_ledc_obj[speed_mode]->ledc_hal), speed_mode);
|
|
}
|
|
|
|
/*set channel parameters*/
|
|
/* channel parameters decide how the waveform looks like in one period*/
|
|
/* set channel duty and hpoint value, duty range is (0 ~ ((2 ** duty_resolution) - 1)), max hpoint value is 0xfffff*/
|
|
ledc_set_duty_with_hpoint(speed_mode, ledc_channel, duty, hpoint);
|
|
/*update duty settings*/
|
|
ledc_update_duty(speed_mode, ledc_channel);
|
|
/*bind the channel with the timer*/
|
|
ledc_bind_channel_timer(speed_mode, ledc_channel, timer_select);
|
|
/*set interrupt type*/
|
|
ledc_enable_intr_type(speed_mode, ledc_channel, intr_type);
|
|
ESP_LOGD(LEDC_TAG, "LEDC_PWM CHANNEL %1u|GPIO %02u|Duty %04u|Time %01u",
|
|
ledc_channel, gpio_num, duty, timer_select
|
|
);
|
|
/*set LEDC signal in gpio matrix*/
|
|
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[gpio_num], PIN_FUNC_GPIO);
|
|
gpio_set_direction(gpio_num, GPIO_MODE_OUTPUT);
|
|
esp_rom_gpio_connect_out_signal(gpio_num, ledc_periph_signal[speed_mode].sig_out0_idx + ledc_channel, 0, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
esp_err_t ledc_update_duty(ledc_mode_t speed_mode, ledc_channel_t channel)
|
|
{
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
|
portENTER_CRITICAL(&ledc_spinlock);
|
|
ledc_hal_set_sig_out_en(&(p_ledc_obj[speed_mode]->ledc_hal), channel, true);
|
|
ledc_hal_set_duty_start(&(p_ledc_obj[speed_mode]->ledc_hal), channel, true);
|
|
ledc_ls_channel_update(speed_mode, channel);
|
|
portEXIT_CRITICAL(&ledc_spinlock);
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t ledc_stop(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t idle_level)
|
|
{
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
|
portENTER_CRITICAL(&ledc_spinlock);
|
|
ledc_hal_set_idle_level(&(p_ledc_obj[speed_mode]->ledc_hal), channel, idle_level);
|
|
ledc_hal_set_sig_out_en(&(p_ledc_obj[speed_mode]->ledc_hal), channel, false);
|
|
ledc_hal_set_duty_start(&(p_ledc_obj[speed_mode]->ledc_hal), channel, false);
|
|
ledc_ls_channel_update(speed_mode, channel);
|
|
portEXIT_CRITICAL(&ledc_spinlock);
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t ledc_set_fade(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty, ledc_duty_direction_t fade_direction,
|
|
uint32_t step_num, uint32_t duty_cyle_num, uint32_t duty_scale)
|
|
{
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
|
|
LEDC_ARG_CHECK(fade_direction < LEDC_DUTY_DIR_MAX, "fade_direction");
|
|
LEDC_ARG_CHECK(step_num <= LEDC_DUTY_NUM_MAX, "step_num");
|
|
LEDC_ARG_CHECK(duty_cyle_num <= LEDC_DUTY_CYCLE_MAX, "duty_cycle_num");
|
|
LEDC_ARG_CHECK(duty_scale <= LEDC_DUTY_SCALE_MAX, "duty_scale");
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
|
_ledc_fade_hw_acquire(speed_mode, channel);
|
|
ledc_duty_config(speed_mode,
|
|
channel, //uint32_t chan_num,
|
|
LEDC_VAL_NO_CHANGE,
|
|
duty, //uint32_t duty_val,
|
|
fade_direction, //uint32_t increase,
|
|
step_num, //uint32_t duty_num,
|
|
duty_cyle_num, //uint32_t duty_cycle,
|
|
duty_scale //uint32_t duty_scale
|
|
);
|
|
_ledc_fade_hw_release(speed_mode, channel);
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t ledc_set_duty_with_hpoint(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty, uint32_t hpoint)
|
|
{
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
|
|
LEDC_ARG_CHECK(hpoint <= LEDC_HPOINT_VAL_MAX, "hpoint");
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
|
/* The channel configuration should not be changed before the fade operation is done. */
|
|
_ledc_fade_hw_acquire(speed_mode, channel);
|
|
ledc_duty_config(speed_mode,
|
|
channel, //uint32_t chan_num,
|
|
hpoint, //uint32_t hpoint_val,
|
|
duty, //uint32_t duty_val,
|
|
1, //uint32_t increase,
|
|
1, //uint32_t duty_num,
|
|
1, //uint32_t duty_cycle,
|
|
0 //uint32_t duty_scale
|
|
);
|
|
_ledc_fade_hw_release(speed_mode, channel);
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t ledc_set_duty(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty)
|
|
{
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
|
/* The channel configuration should not be changed before the fade operation is done. */
|
|
_ledc_fade_hw_acquire(speed_mode, channel);
|
|
ledc_duty_config(speed_mode,
|
|
channel, //uint32_t chan_num,
|
|
LEDC_VAL_NO_CHANGE,
|
|
duty, //uint32_t duty_val,
|
|
1, //uint32_t increase,
|
|
1, //uint32_t duty_num,
|
|
1, //uint32_t duty_cycle,
|
|
0 //uint32_t duty_scale
|
|
);
|
|
_ledc_fade_hw_release(speed_mode, channel);
|
|
return ESP_OK;
|
|
}
|
|
|
|
uint32_t ledc_get_duty(ledc_mode_t speed_mode, ledc_channel_t channel)
|
|
{
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
|
uint32_t duty = 0;
|
|
ledc_hal_get_duty(&(p_ledc_obj[speed_mode]->ledc_hal), channel, &duty);
|
|
return duty;
|
|
}
|
|
|
|
int ledc_get_hpoint(ledc_mode_t speed_mode, ledc_channel_t channel)
|
|
{
|
|
LEDC_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode argument is invalid", LEDC_ERR_VAL);
|
|
LEDC_CHECK(channel < LEDC_CHANNEL_MAX, "channel argument is invalid", LEDC_ERR_VAL);
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
|
uint32_t hpoint = 0;
|
|
ledc_hal_get_hpoint(&(p_ledc_obj[speed_mode]->ledc_hal), channel, &hpoint);
|
|
return hpoint;
|
|
}
|
|
|
|
esp_err_t ledc_set_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num, uint32_t freq_hz)
|
|
{
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(timer_num < LEDC_TIMER_MAX, "timer_num");
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
|
ledc_clk_cfg_t clk_cfg = LEDC_USE_APB_CLK;
|
|
uint32_t duty_resolution = 0;
|
|
ledc_hal_get_clk_cfg(&(p_ledc_obj[speed_mode]->ledc_hal), timer_num, &clk_cfg);
|
|
ledc_hal_get_duty_resolution(&(p_ledc_obj[speed_mode]->ledc_hal), timer_num, &duty_resolution);
|
|
return ledc_set_timer_div(speed_mode, timer_num, clk_cfg, freq_hz, duty_resolution);
|
|
}
|
|
|
|
uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num)
|
|
{
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(timer_num < LEDC_TIMER_MAX, "timer_num");
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
|
portENTER_CRITICAL(&ledc_spinlock);
|
|
uint32_t clock_divider = 0;
|
|
uint32_t duty_resolution = 0;
|
|
ledc_clk_cfg_t clk_cfg = LEDC_USE_APB_CLK;
|
|
ledc_hal_get_clock_divider(&(p_ledc_obj[speed_mode]->ledc_hal), timer_num, &clock_divider);
|
|
ledc_hal_get_duty_resolution(&(p_ledc_obj[speed_mode]->ledc_hal), timer_num, &duty_resolution);
|
|
ledc_hal_get_clk_cfg(&(p_ledc_obj[speed_mode]->ledc_hal), timer_num, &clk_cfg);
|
|
uint32_t precision = (0x1 << duty_resolution);
|
|
uint32_t src_clk_freq = ledc_get_src_clk_freq(clk_cfg);
|
|
portEXIT_CRITICAL(&ledc_spinlock);
|
|
return ((uint64_t) src_clk_freq << 8) / precision / clock_divider;
|
|
}
|
|
|
|
static inline void ledc_calc_fade_end_channel(uint32_t *fade_end_status, uint32_t *channel)
|
|
{
|
|
uint32_t i = __builtin_ffs((*fade_end_status)) - 1;
|
|
(*fade_end_status) &= ~(1 << i);
|
|
*channel = i;
|
|
}
|
|
|
|
void IRAM_ATTR ledc_fade_isr(void* arg)
|
|
{
|
|
portBASE_TYPE HPTaskAwoken = pdFALSE;
|
|
uint32_t speed_mode = 0;
|
|
uint32_t channel = 0;
|
|
uint32_t intr_status = 0;
|
|
|
|
for (speed_mode = 0; speed_mode < LEDC_SPEED_MODE_MAX; speed_mode++) {
|
|
if (p_ledc_obj[speed_mode] == NULL) {
|
|
continue;
|
|
}
|
|
ledc_hal_get_fade_end_intr_status(&(p_ledc_obj[speed_mode]->ledc_hal), &intr_status);
|
|
while(intr_status) {
|
|
ledc_calc_fade_end_channel(&intr_status, &channel);
|
|
|
|
// clear interrupt
|
|
portENTER_CRITICAL(&ledc_spinlock);
|
|
ledc_hal_clear_fade_end_intr_status(&(p_ledc_obj[speed_mode]->ledc_hal), channel);
|
|
portEXIT_CRITICAL(&ledc_spinlock);
|
|
|
|
if (s_ledc_fade_rec[speed_mode][channel] == NULL) {
|
|
//fade object not initialized yet.
|
|
continue;
|
|
}
|
|
|
|
uint32_t duty_cur = 0;
|
|
ledc_hal_get_duty(&(p_ledc_obj[speed_mode]->ledc_hal), channel, &duty_cur);
|
|
if (duty_cur == s_ledc_fade_rec[speed_mode][channel]->target_duty) {
|
|
xSemaphoreGiveFromISR(s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem, &HPTaskAwoken);
|
|
if (HPTaskAwoken == pdTRUE) {
|
|
portYIELD_FROM_ISR();
|
|
}
|
|
continue;
|
|
}
|
|
uint32_t duty_tar = s_ledc_fade_rec[speed_mode][channel]->target_duty;
|
|
int scale = s_ledc_fade_rec[speed_mode][channel]->scale;
|
|
if (scale == 0) {
|
|
xSemaphoreGiveFromISR(s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem, &HPTaskAwoken);
|
|
continue;
|
|
}
|
|
int cycle = s_ledc_fade_rec[speed_mode][channel]->cycle_num;
|
|
int delta = s_ledc_fade_rec[speed_mode][channel]->direction == LEDC_DUTY_DIR_DECREASE ? duty_cur - duty_tar : duty_tar - duty_cur;
|
|
int step = delta / scale > LEDC_STEP_NUM_MAX ? LEDC_STEP_NUM_MAX : delta / scale;
|
|
if (delta > scale) {
|
|
ledc_duty_config(
|
|
speed_mode,
|
|
channel,
|
|
LEDC_VAL_NO_CHANGE,
|
|
duty_cur,
|
|
s_ledc_fade_rec[speed_mode][channel]->direction,
|
|
step,
|
|
cycle,
|
|
scale);
|
|
} else {
|
|
ledc_duty_config(
|
|
speed_mode,
|
|
channel,
|
|
LEDC_VAL_NO_CHANGE,
|
|
duty_tar,
|
|
s_ledc_fade_rec[speed_mode][channel]->direction,
|
|
1,
|
|
1,
|
|
0);
|
|
}
|
|
portENTER_CRITICAL(&ledc_spinlock);
|
|
ledc_hal_set_duty_start(&(p_ledc_obj[speed_mode]->ledc_hal), channel, true);
|
|
portEXIT_CRITICAL(&ledc_spinlock);
|
|
}
|
|
}
|
|
}
|
|
|
|
static esp_err_t ledc_fade_channel_deinit(ledc_mode_t speed_mode, ledc_channel_t channel)
|
|
{
|
|
if (s_ledc_fade_rec[speed_mode][channel]) {
|
|
if (s_ledc_fade_rec[speed_mode][channel]->ledc_fade_mux) {
|
|
vSemaphoreDelete(s_ledc_fade_rec[speed_mode][channel]->ledc_fade_mux);
|
|
s_ledc_fade_rec[speed_mode][channel]->ledc_fade_mux = NULL;
|
|
}
|
|
if (s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem) {
|
|
vSemaphoreDelete(s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem);
|
|
s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem = NULL;
|
|
}
|
|
free(s_ledc_fade_rec[speed_mode][channel]);
|
|
s_ledc_fade_rec[speed_mode][channel] = NULL;
|
|
}
|
|
return ESP_OK;
|
|
}
|
|
|
|
static esp_err_t ledc_fade_channel_init_check(ledc_mode_t speed_mode, ledc_channel_t channel)
|
|
{
|
|
if (s_ledc_fade_isr_handle == NULL) {
|
|
ESP_LOGE(LEDC_TAG, "Fade service not installed, call ledc_fade_func_install");
|
|
return ESP_FAIL;
|
|
}
|
|
if (s_ledc_fade_rec[speed_mode][channel] == NULL) {
|
|
#if CONFIG_SPIRAM_USE_MALLOC
|
|
s_ledc_fade_rec[speed_mode][channel] = (ledc_fade_t *) heap_caps_calloc(1, sizeof(ledc_fade_t), MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
|
|
if (!s_ledc_fade_rec[speed_mode][channel]) {
|
|
ledc_fade_channel_deinit(speed_mode, channel);
|
|
return ESP_FAIL;
|
|
}
|
|
|
|
memset(&s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem_storage, 0, sizeof(StaticQueue_t));
|
|
s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem = xSemaphoreCreateBinaryStatic(&s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem_storage);
|
|
#else
|
|
s_ledc_fade_rec[speed_mode][channel] = (ledc_fade_t *) calloc(1, sizeof(ledc_fade_t));
|
|
s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem = xSemaphoreCreateBinary();
|
|
#endif
|
|
s_ledc_fade_rec[speed_mode][channel]->ledc_fade_mux = xSemaphoreCreateMutex();
|
|
xSemaphoreGive(s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem);
|
|
}
|
|
if (s_ledc_fade_rec[speed_mode][channel]
|
|
&& s_ledc_fade_rec[speed_mode][channel]->ledc_fade_mux
|
|
&& s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem) {
|
|
return ESP_OK;
|
|
} else {
|
|
ledc_fade_channel_deinit(speed_mode, channel);
|
|
return ESP_FAIL;
|
|
}
|
|
}
|
|
|
|
static esp_err_t _ledc_set_fade_with_step(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t target_duty, int scale, int cycle_num)
|
|
{
|
|
portENTER_CRITICAL(&ledc_spinlock);
|
|
uint32_t duty_cur = 0;
|
|
ledc_hal_get_duty(&(p_ledc_obj[speed_mode]->ledc_hal), channel, &duty_cur);
|
|
// When duty == max_duty, meanwhile, if scale == 1 and fade_down == 1, counter would overflow.
|
|
if (duty_cur == ledc_get_max_duty(speed_mode, channel)) {
|
|
duty_cur -= 1;
|
|
}
|
|
s_ledc_fade_rec[speed_mode][channel]->speed_mode = speed_mode;
|
|
s_ledc_fade_rec[speed_mode][channel]->target_duty = target_duty;
|
|
s_ledc_fade_rec[speed_mode][channel]->cycle_num = cycle_num;
|
|
s_ledc_fade_rec[speed_mode][channel]->scale = scale;
|
|
int step_num = 0;
|
|
int dir = LEDC_DUTY_DIR_DECREASE;
|
|
if (scale > 0) {
|
|
if (duty_cur > target_duty) {
|
|
s_ledc_fade_rec[speed_mode][channel]->direction = LEDC_DUTY_DIR_DECREASE;
|
|
step_num = (duty_cur - target_duty) / scale;
|
|
step_num = step_num > LEDC_STEP_NUM_MAX ? LEDC_STEP_NUM_MAX : step_num;
|
|
} else {
|
|
s_ledc_fade_rec[speed_mode][channel]->direction = LEDC_DUTY_DIR_INCREASE;
|
|
dir = LEDC_DUTY_DIR_INCREASE;
|
|
step_num = (target_duty - duty_cur) / scale;
|
|
step_num = step_num > LEDC_STEP_NUM_MAX ? LEDC_STEP_NUM_MAX : step_num;
|
|
}
|
|
}
|
|
|
|
portEXIT_CRITICAL(&ledc_spinlock);
|
|
if (scale > 0 && step_num > 0) {
|
|
ledc_duty_config(speed_mode, channel, LEDC_VAL_NO_CHANGE, duty_cur, dir, step_num, cycle_num, scale);
|
|
ESP_LOGD(LEDC_TAG, "cur duty: %d; target: %d, step: %d, cycle: %d; scale: %d; dir: %d\n",
|
|
duty_cur, target_duty, step_num, cycle_num, scale, dir);
|
|
} else {
|
|
ledc_duty_config(speed_mode, channel, LEDC_VAL_NO_CHANGE, target_duty, dir, 0, 1, 0);
|
|
ESP_LOGD(LEDC_TAG, "Set to target duty: %d", target_duty);
|
|
}
|
|
return ESP_OK;
|
|
}
|
|
|
|
static esp_err_t _ledc_set_fade_with_time(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t target_duty, int max_fade_time_ms)
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{
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ledc_timer_t timer_sel;
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uint32_t duty_cur = 0;
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ledc_hal_get_channel_timer(&(p_ledc_obj[speed_mode]->ledc_hal), channel, &timer_sel);
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ledc_hal_get_duty(&(p_ledc_obj[speed_mode]->ledc_hal), channel, &duty_cur);
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uint32_t freq = ledc_get_freq(speed_mode, timer_sel);
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uint32_t duty_delta = target_duty > duty_cur ? target_duty - duty_cur : duty_cur - target_duty;
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if (duty_delta == 0) {
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return _ledc_set_fade_with_step(speed_mode, channel, target_duty, 0, 0);
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}
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int total_cycles = max_fade_time_ms * freq / 1000;
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if (total_cycles == 0) {
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ESP_LOGW(LEDC_TAG, LEDC_FADE_TOO_FAST_STR);
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return _ledc_set_fade_with_step(speed_mode, channel, target_duty, 0, 0);
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}
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int scale, cycle_num;
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if (total_cycles > duty_delta) {
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scale = 1;
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cycle_num = total_cycles / duty_delta;
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if (cycle_num > LEDC_DUTY_NUM_MAX) {
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ESP_LOGW(LEDC_TAG, LEDC_FADE_TOO_SLOW_STR);
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cycle_num = LEDC_DUTY_NUM_MAX;
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}
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} else {
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cycle_num = 1;
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scale = duty_delta / total_cycles;
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if (scale > LEDC_DUTY_SCALE_MAX) {
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ESP_LOGW(LEDC_TAG, LEDC_FADE_TOO_FAST_STR);
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scale = LEDC_DUTY_SCALE_MAX;
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}
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}
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return _ledc_set_fade_with_step(speed_mode, channel, target_duty, scale, cycle_num);
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}
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static void _ledc_fade_start(ledc_mode_t speed_mode, ledc_channel_t channel, ledc_fade_mode_t fade_mode)
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{
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s_ledc_fade_rec[speed_mode][channel]->mode = fade_mode;
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// Clear interrupt status of channel
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ledc_hal_clear_fade_end_intr_status(&(p_ledc_obj[speed_mode]->ledc_hal), channel);
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// Enable interrupt for channel
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ledc_enable_intr_type(speed_mode, channel, LEDC_INTR_FADE_END);
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ledc_update_duty(speed_mode, channel);
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if (fade_mode == LEDC_FADE_WAIT_DONE) {
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xSemaphoreTake(s_ledc_fade_rec[speed_mode][channel]->ledc_fade_sem, portMAX_DELAY);
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}
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}
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esp_err_t ledc_set_fade_with_time(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t target_duty, int max_fade_time_ms)
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{
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LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
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LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
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LEDC_ARG_CHECK(target_duty <= ledc_get_max_duty(speed_mode, channel), "target_duty");
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LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
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LEDC_CHECK(ledc_fade_channel_init_check(speed_mode, channel) == ESP_OK , LEDC_FADE_INIT_ERROR_STR, ESP_FAIL);
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_ledc_fade_hw_acquire(speed_mode, channel);
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_ledc_set_fade_with_time(speed_mode, channel, target_duty, max_fade_time_ms);
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_ledc_fade_hw_release(speed_mode, channel);
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return ESP_OK;
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}
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esp_err_t ledc_set_fade_with_step(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t target_duty, uint32_t scale, uint32_t cycle_num)
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{
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LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
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LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
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LEDC_ARG_CHECK((scale > 0) && (scale <= LEDC_DUTY_SCALE_MAX), "fade scale");
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LEDC_ARG_CHECK((cycle_num > 0) && (cycle_num <= LEDC_DUTY_CYCLE_MAX), "cycle_num");
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LEDC_ARG_CHECK(target_duty <= ledc_get_max_duty(speed_mode, channel), "target_duty");
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LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
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LEDC_CHECK(ledc_fade_channel_init_check(speed_mode, channel) == ESP_OK , LEDC_FADE_INIT_ERROR_STR, ESP_FAIL);
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_ledc_fade_hw_acquire(speed_mode, channel);
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_ledc_set_fade_with_step(speed_mode, channel, target_duty, scale, cycle_num);
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_ledc_fade_hw_release(speed_mode, channel);
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return ESP_OK;
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}
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esp_err_t ledc_fade_start(ledc_mode_t speed_mode, ledc_channel_t channel, ledc_fade_mode_t fade_mode)
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{
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LEDC_CHECK(s_ledc_fade_rec != NULL, LEDC_FADE_SERVICE_ERR_STR, ESP_ERR_INVALID_STATE);
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LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
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LEDC_ARG_CHECK(fade_mode < LEDC_FADE_MAX, "fade_mode");
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LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
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_ledc_fade_hw_acquire(speed_mode, channel);
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_ledc_fade_start(speed_mode, channel, fade_mode);
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_ledc_fade_hw_release(speed_mode, channel);
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return ESP_OK;
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}
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esp_err_t ledc_fade_func_install(int intr_alloc_flags)
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{
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//OR intr_alloc_flags with ESP_INTR_FLAG_IRAM because the fade isr is in IRAM
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return ledc_isr_register(ledc_fade_isr, NULL, intr_alloc_flags | ESP_INTR_FLAG_IRAM, &s_ledc_fade_isr_handle);
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}
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void ledc_fade_func_uninstall(void)
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{
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if (s_ledc_fade_rec == NULL) {
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return;
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}
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if (s_ledc_fade_isr_handle) {
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esp_intr_free(s_ledc_fade_isr_handle);
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s_ledc_fade_isr_handle = NULL;
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}
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int channel, mode;
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for (mode = 0; mode < LEDC_SPEED_MODE_MAX; mode++) {
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for (channel = 0; channel < LEDC_CHANNEL_MAX; channel++) {
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ledc_fade_channel_deinit(mode, channel);
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}
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}
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return;
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}
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/*
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* The functions below are thread-safe version of APIs for duty and fade control.
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* These APIs can be called from different tasks.
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*/
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esp_err_t ledc_set_duty_and_update(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty, uint32_t hpoint)
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{
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LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
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LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
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LEDC_ARG_CHECK(duty <= ledc_get_max_duty(speed_mode, channel), "target_duty");
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LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
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LEDC_CHECK(ledc_fade_channel_init_check(speed_mode, channel) == ESP_OK , LEDC_FADE_INIT_ERROR_STR, ESP_FAIL);
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_ledc_op_lock_acquire(speed_mode, channel);
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_ledc_fade_hw_acquire(speed_mode, channel);
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_ledc_set_fade_with_step(speed_mode, channel, duty, 0, 1);
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_ledc_fade_start(speed_mode, channel, LEDC_FADE_WAIT_DONE);
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_ledc_fade_hw_release(speed_mode, channel);
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_ledc_op_lock_release(speed_mode, channel);
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return ESP_OK;
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}
|
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esp_err_t ledc_set_fade_time_and_start(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t target_duty, uint32_t max_fade_time_ms, ledc_fade_mode_t fade_mode)
|
|
{
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
|
|
LEDC_ARG_CHECK(fade_mode < LEDC_FADE_MAX, "fade_mode");
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
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LEDC_CHECK(ledc_fade_channel_init_check(speed_mode, channel) == ESP_OK , LEDC_FADE_INIT_ERROR_STR, ESP_FAIL);
|
|
LEDC_ARG_CHECK(target_duty <= ledc_get_max_duty(speed_mode, channel), "target_duty");
|
|
_ledc_op_lock_acquire(speed_mode, channel);
|
|
_ledc_fade_hw_acquire(speed_mode, channel);
|
|
_ledc_set_fade_with_time(speed_mode, channel, target_duty, max_fade_time_ms);
|
|
_ledc_fade_start(speed_mode, channel, fade_mode);
|
|
if (fade_mode == LEDC_FADE_WAIT_DONE) {
|
|
_ledc_fade_hw_release(speed_mode, channel);
|
|
}
|
|
_ledc_op_lock_release(speed_mode, channel);
|
|
return ESP_OK;
|
|
}
|
|
|
|
esp_err_t ledc_set_fade_step_and_start(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t target_duty, uint32_t scale, uint32_t cycle_num, ledc_fade_mode_t fade_mode)
|
|
{
|
|
LEDC_ARG_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "speed_mode");
|
|
LEDC_ARG_CHECK(channel < LEDC_CHANNEL_MAX, "channel");
|
|
LEDC_ARG_CHECK(fade_mode < LEDC_FADE_MAX, "fade_mode");
|
|
LEDC_CHECK(p_ledc_obj[speed_mode] != NULL, LEDC_NOT_INIT, ESP_ERR_INVALID_STATE);
|
|
LEDC_CHECK(ledc_fade_channel_init_check(speed_mode, channel) == ESP_OK , LEDC_FADE_INIT_ERROR_STR, ESP_FAIL);
|
|
LEDC_ARG_CHECK((scale > 0) && (scale <= LEDC_DUTY_SCALE_MAX), "fade scale");
|
|
LEDC_ARG_CHECK((cycle_num > 0) && (cycle_num <= LEDC_DUTY_CYCLE_MAX), "cycle_num");
|
|
LEDC_ARG_CHECK(target_duty <= ledc_get_max_duty(speed_mode, channel), "target_duty");
|
|
_ledc_op_lock_acquire(speed_mode, channel);
|
|
_ledc_fade_hw_acquire(speed_mode, channel);
|
|
_ledc_set_fade_with_step(speed_mode, channel, target_duty, scale, cycle_num);
|
|
_ledc_fade_start(speed_mode, channel, fade_mode);
|
|
if (fade_mode == LEDC_FADE_WAIT_DONE) {
|
|
_ledc_fade_hw_release(speed_mode, channel);
|
|
}
|
|
_ledc_op_lock_release(speed_mode, channel);
|
|
return ESP_OK;
|
|
}
|