kopia lustrzana https://github.com/espressif/esp-idf
add ledc driver code
Wangjialin
rodzic
28be72dbc7
commit
85cd269ef8
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// Copyright 2015-2016 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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#ifndef _DRIVER_LEDC_H_
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#define _DRIVER_LEDC_H_
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#include "esp_err.h"
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#include "soc/soc.h"
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#include "soc/ledc_reg.h"
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#include "soc/ledc_reg.h"
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#include "soc/ledc_struct.h"
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#include "driver/gpio.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define LEDC_APB_CLK_HZ (APB_CLK_FREQ)
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#define LEDC_REF_CLK_HZ (1*1000000)
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typedef enum {
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LEDC_HIGH_SPEED_MODE = 0, /*LEDC high speed speed_mode */
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//in this version, we only support high speed speed_mode. We will access low speed speed_mode later
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//LEDC_LOW_SPEED_MODE, /*LEDC low speed speed_mode */
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LEDC_SPEED_MODE_MAX,
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} ledc_mode_t;
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typedef enum {
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LEDC_INTR_DISABLE = 0, /*Disable LEDC interrupt */
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LEDC_INTR_FADE_END, /*Enable LEDC interrupt */
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} ledc_intr_type_t;
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typedef enum {
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LEDC_DUTY_DIR_DECREASE = 0, /*LEDC duty decrease direction */
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LEDC_DUTY_DIR_INCREASE = 1, /*LEDC duty increase direction */
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} ledc_duty_direction_t;
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typedef enum {
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LEDC_REF_TICK = 0, // 1MhZ
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LEDC_APB_CLK, //80Mhz
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}ledc_timer_src_t;
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typedef enum {
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LEDC_TIMER0 = 0, /*LEDC source time TIME0 */
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LEDC_TIMER1, /*LEDC source time TIME1 */
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LEDC_TIMER2, /*LEDC source time TIME2 */
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LEDC_TIMER3, /*LEDC source time TIME3 */
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} ledc_timer_source_t;
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typedef enum {
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LEDC_CHANNEL_0 = 0, /*LEDC channel 0 */
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LEDC_CHANNEL_1, /*LEDC channel 1 */
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LEDC_CHANNEL_2, /*LEDC channel 2 */
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LEDC_CHANNEL_3, /*LEDC channel 3 */
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LEDC_CHANNEL_4, /*LEDC channel 4 */
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LEDC_CHANNEL_5, /*LEDC channel 5 */
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LEDC_CHANNEL_6, /*LEDC channel 6 */
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LEDC_CHANNEL_7, /*LEDC channel 7 */
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} ledc_channel_t;
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typedef enum {
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LEDC_DUTY_DEPTH_10_BIT = 10, /*LEDC PWM depth 10Bit */
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LEDC_DUTY_DEPTH_11_BIT = 11, /*LEDC PWM depth 11Bit */
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LEDC_DUTY_DEPTH_12_BIT = 12, /*LEDC PWM depth 12Bit */
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LEDC_DUTY_DEPTH_13_BIT = 13, /*LEDC PWM depth 13Bit */
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LEDC_DUTY_DEPTH_14_BIT = 14, /*LEDC PWM depth 14Bit */
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LEDC_DUTY_DEPTH_15_BIT = 15, /*LEDC PWM depth 15Bit */
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} ledc_duty_depth_t;
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typedef struct ledc_channel_t_config {
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int gpio_num; /*the LEDC output gpio_num, if you want to use gpio16, ledc_config_t.gpio_num = 16*/
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ledc_mode_t speed_mode; /*LEDC speed speed_mode*/
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ledc_channel_t channel; /*LEDC channel(0 - 7)*/
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ledc_intr_type_t intr_type; /*configure interrupt , Fade interrupt enable or Fade interrupt disable*/
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ledc_timer_source_t timer_src; /*Select the timer source of channel (0 - 3)*/
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uint32_t freq_hz; /*LEDC channel frequency(Hz)*/
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uint32_t duty; /*LEDC channel duty,the duty range is [0,(2**duty_depth) - 1],*/
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ledc_duty_depth_t duty_depth; /*LEDC channel duty depth*/
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} ledc_config_t;
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/**
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* @brief LEDC common configuration
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*
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* User this Function,configure LEDC with the given channel/output gpio_num/interrupt/source timer/frequency(Hz)/LEDC depth
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*
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* @param[in] ledc_config_t
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* ledc_config_t.speed_mode : LEDC speed speed_mode
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* ledc_config_t.gpio_num : LEDC output gpio_num, if you want to use gpio16, ledc_config_t.gpio_num = 16
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* ledc_config_t.channel : LEDC channel(0 - 7)
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* ledc_config_t.intr_type : configure interrupt , Fade interrupt enable or Fade interrupt disable
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* ledc_config_t.timer_src : Select the timer source of channel (0 - 3)
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* When different channel ,select same timer ,their freq_hz and duty_depth must be the same
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* ledc_config_t.freq_hz : LEDC channel frequency(Hz),
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* When different channel ,select same time ,their freq_hz and duty_depth must be same
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* ledc_config_t.duty : LEDC channel duty,the duty range is [0,(2**duty_depth) - 1],
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* ledc_config_t.duty_depth : LEDC channel duty depth
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* When different channel ,select same time ,their freq_hz and duty_depth must be same
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* @return ESP_OK: success
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* ESP_ERR_INVALID_ARG: parameter error
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* ESP_FAIL: spin_lock error
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*
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*/
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esp_err_t ledc_config(ledc_config_t* ledc_conf);
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/**
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* @brief LEDC start
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*
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* Call this function to activate the LEDC updated parameters.
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* After ledc_set_duty,ledc_set_fade, we need to call this function to update the settings.
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*
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* @param[in] speed_mode : select the LEDC speed_mode, high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode
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*
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* @param[in] channel : LEDC channel(0-7)
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*
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* @return ESP_OK: success
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* ESP_ERR_INVALID_ARG: parameter error
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* ESP_FAIL: spin_lock error
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*
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*/
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esp_err_t ledc_update(ledc_mode_t speed_mode, ledc_channel_t channel);
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/**
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* @brief LEDC stop
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*
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* Disable LEDC output,and set idle level
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*
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* @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode
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*
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* @param[in] channel : LEDC channel(0-7)
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*
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* @return ESP_OK: success
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* ESP_ERR_INVALID_ARG: parameter error
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* ESP_FAIL: spin_lock error
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*/
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esp_err_t ledc_stop(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t idle_level);
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/**
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* @brief LEDC set channel frequency(Hz)
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*
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* Set LEDC frequency(Hz)
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*
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* @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode
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*
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* @param[in] channel : current channel(0-7)
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*
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* @param[in] freq_hz : set the LEDC frequency
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*
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* @return ESP_OK: success
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* ESP_ERR_INVALID_ARG: parameter error
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* ESP_FAIL: spin_lock error
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*/
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esp_err_t ledc_set_freq(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t freq_hz);
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/**
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* @brief LEDC get channel frequency(Hz)
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*
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* @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode
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*
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* @param[in] channel : LEDC channel(0-7)
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*
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* @return 0 : error
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* others : current LEDC frequency
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*
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*/
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uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_channel_t channel);
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/**
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* @brief LEDC set duty
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*
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* Set LEDC duty ,After the function calls the ledc_update function, the function can take effect.
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*
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* @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode
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*
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* @param[in] channel : LEDC channel(0-7)
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*
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* @param[in] duty : set the LEDC duty ,the duty range is [0,(2**duty_depth) - 1]
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*
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* @return ESP_OK: success
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* ESP_ERR_INVALID_ARG: parameter error
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* ESP_FAIL: spin_lock error
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*/
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esp_err_t ledc_set_duty(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty);
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/**
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* @brief LEDC get duty
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*
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* @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode
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*
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* @param[in] channel : LEDC channel(0-7)
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*
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*
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* @return current LEDC duty
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*
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*/
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uint32_t ledc_get_duty(ledc_mode_t speed_mode, ledc_channel_t channel);
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/**
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* @brief LEDC set gradient
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*
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* Set LEDC gradient , After the function calls the ledc_update function , the function can take effect.
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*
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* @param[in] speed_mode : select the LEDC speed_mode,high-speed speed_mode and low-speed speed_mode,now we only support high-speed speed_mode ,next will add low-speed speed_mode
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*
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* @param[in] channel : LEDC channel(0-7)
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*
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* @param[in] duty : set the start of the gradient duty , the duty range is [0,(2**duty_depth) - 1]
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*
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* @param[in] gradule_direction : set the direction of the gradient
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*
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* @param[in] step_num : set the number of the gradient
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*
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* @param[in] duty_cyle_num : set how many LEDC tick each time the gradient lasts
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*
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* @param[in] duty_scale : set gradient change amplitude
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*
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* @return ESP_OK : success
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* ESP_ERR_INVALID_ARG : parameter error
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* ESP_FAIL : spin_lock error
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*/
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esp_err_t ledc_set_fade(ledc_mode_t speed_mode, uint32_t channel, uint32_t duty, ledc_duty_direction_t gradule_direction,
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uint32_t step_num, uint32_t duty_cyle_num, uint32_t duty_scale);
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/**
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* @brief register LEDC interrupt handler, the handler is an ISR.
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* The handler will be attached to the same CPU core that this function is running on.
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* Users should know that which CPU is running and then pick a INUM that is not used by system.
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* We can find the information of INUM and interrupt level in soc.h.
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* TODO: to move INUM options to menu_config
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* @parameter uint32_t ledc_intr_num : LEDC interrupt number,check the info in soc.h, and please see the core-isa.h for more details
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* @parameter void (* fn)(void* ) : interrupt handler function.
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* Note that the handler function MUST be defined with attribution of "IRAM_ATTR".
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* @parameter void * arg : parameter for handler function
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*
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* @return ESP_OK : success ;
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* ESP_ERR_INVALID_ARG : fucntion ptr error.
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* ESP_FAIL : spin_lock error
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*/
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esp_err_t ledc_isr_register(uint32_t ledc_intr_num, void (*fn)(void*), void * arg);
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/***************************EXAMPLE**********************************
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*
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*
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* ----------------EXAMPLE OF LEDC SETTING ---------------------
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* ledc_config_t ledc_conf = {
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* .channel = LEDC_CHANNEL_0; //set LEDC channel 0
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* .duty = 1000; //set the duty for initialization.(duty range is 0 ~ ((2**duty_depth)-1)
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* .freq_hz = 1000; //set frequency , e.g.,1KHz
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* .gpio_num = 16; //GPIO number
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* .intr_type = LEDC_INTR_FADE_END; //GPIO INTR TYPE, as an example,we enable fade_end interrupt here.
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* .duty_depth = LEDC_DUTY_DEPTH_12_BIT; //set duty_depth , (duty range is 0 ~ ((2**duty_depth)-1)
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* .speed_mode = LEDC_HIGH_SPEED_MODE; //set LEDC mode, from ledc_mode_t
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* .timer_src = LEDC_TIMER0; //set LEDC timer source, if different channel use one timer, the frequency and duty_depth of these channels should be the same
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* }
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* ledc_config(&ledc_conf); //setup the configuration
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* ----------------EXAMPLE OF SETTING DUTY --- -----------------
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* uint32_t ledc_channel = LEDC_CHANNEL_0; //LEDC channel(0-73)
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* uint32_t duty = 2000; //duty range is 0 ~ ((2**duty_depth)-1)
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* LEDC_set_duty(LEDC_HIGH_SPEED_MODE,ledc_channel,duty); //set speed mode, channel, and duty.
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* ledc_update(LEDC_HIGH_SPEED_MODE,ledc_channel); //after set duty, we need to call ledc_update to update the settings.
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*
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*
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* ----------------EXAMPLE OF LEDC INTERRUPT ------------------
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* //we have fade_end interrupt and counter overflow interrupt. we just give an example of fade_end interrupt here.
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* ledc_isr_register(18, ledc_isr_handler, NULL); //hook the isr handler for LEDC interrupt
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* //the first parameter is INUM, you can pick one form interrupt level 1/2 which is not used by the system.
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* //NOTE1:user should arrange the INUMs that used, better not to use a same INUM for different interrupt source.
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* //NOTE2:do not pick the INUM that already occupied by the system.
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* //NOTE3:refer to soc.h to check which INUMs that can be used.
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* ----------------EXAMPLE OF INTERRUPT HANDLER ---------------
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* #include "esp_attr.h"
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* void IRAM_ATTR ledc_isr_handler(void* arg) //we should add 'IRAM_ATTR' attribution when we declare the isr function
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* {
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* uint32_t intr_st = LEDC.int_st.val; //read LEDC interrupt status.
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*
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* //you will find which channels have triggered fade_end interrupt here,
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* //then , you can post some event to RTOS queue to process the event.
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* //later we will add a queue in the driver code.
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*
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* LEDC.int_clr.val = intr_st; //clear LEDC interrupt status.
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* }
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*
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*
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*--------------------------END OF EXAMPLE --------------------------
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* _DRIVER_LEDC_H_ */
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@ -0,0 +1,368 @@
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// Copyright 2015-2016 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 <esp_types.h>
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#include "esp_intr.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 "soc/dport_reg.h"
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#include "soc/gpio_sig_map.h"
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#include "driver/ledc.h"
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//TODO: Move these debug options to menuconfig
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#define LEDC_DBG_WARING_ENABLE (0)
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#define LEDC_DBG_ERROR_ENABLE (0)
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#define LEDC_INFO_ENABLE (0)
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#define LEDC_DBG_ENABLE (0)
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//DBG INFOR
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#if LEDC_DBG_ENABLE
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#define LEDC_DBG(format,...) do{\
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ets_printf("[dbg][%s#%u]",__FUNCTION__,__LINE__);\
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ets_printf(format,##__VA_ARGS__);\
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}while(0)
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#else
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#define LEDC_DBG(...)
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#endif
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#if LEDC_INFO_ENABLE
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#define LEDC_INFO(format,...) do{\
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ets_printf("[info][%s#%u]",__FUNCTION__,__LINE__);\
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ets_printf(format,##__VA_ARGS__);\
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}while(0)
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#else
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#define LEDC_INFO(...)
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#endif
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#if LEDC_DBG_WARING_ENABLE
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#define LEDC_WARING(format,...) do{\
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ets_printf("[waring][%s#%u]",__FUNCTION__,__LINE__);\
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ets_printf(format,##__VA_ARGS__);\
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}while(0)
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#else
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#define LEDC_WARING(...)
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#endif
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#if LEDC_DBG_ERROR_ENABLE
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#define LEDC_ERROR(format,...) do{\
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ets_printf("[error][%s#%u]",__FUNCTION__,__LINE__);\
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ets_printf(format,##__VA_ARGS__);\
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}while(0)
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#else
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#define LEDC_ERROR(...)
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#endif
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static portMUX_TYPE ledc_spinlock = portMUX_INITIALIZER_UNLOCKED;
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static int ledc_is_valid_channel(uint32_t channel)
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{
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if(channel > LEDC_CHANNEL_7) {
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LEDC_ERROR("LEDC CHANNEL ERR: %d\n",channel);
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return 0;
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}
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return 1;
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}
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static int ledc_is_valid_mode(uint32_t mode)
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{
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if(mode >= LEDC_SPEED_MODE_MAX) {
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LEDC_ERROR("LEDC MODE ERR: %d\n",mode);
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return 0;
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}
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return 1;
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}
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static esp_err_t ledc_timer_config(ledc_mode_t speed_mode, uint32_t timer_sel, uint32_t div_num, uint32_t timer_lim,ledc_timer_source_t clk)
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{
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if(!ledc_is_valid_mode(speed_mode))
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return ESP_ERR_INVALID_ARG;
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portENTER_CRITICAL(&ledc_spinlock);
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LEDC.high_speed_timer[timer_sel].conf.div_num = div_num;
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LEDC.high_speed_timer[timer_sel].conf.tick_sel = clk;
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LEDC.high_speed_timer[timer_sel].conf.timer_lim = timer_lim;
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portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
static esp_err_t ledc_duty_config(ledc_mode_t speed_mode, uint32_t channel_num, uint32_t hpoint_val, uint32_t duty_val,
|
||||
uint32_t duty_direction, uint32_t duty_num, uint32_t duty_cycle, uint32_t duty_scale)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
LEDC.high_speed_channel[channel_num].hpoint.hpoint = hpoint_val;
|
||||
LEDC.high_speed_channel[channel_num].duty.duty = duty_val;
|
||||
LEDC.high_speed_channel[channel_num].conf1.duty_inc = duty_direction;
|
||||
LEDC.high_speed_channel[channel_num].conf1.duty_num = duty_num;
|
||||
LEDC.high_speed_channel[channel_num].conf1.duty_cycle = duty_cycle;
|
||||
LEDC.high_speed_channel[channel_num].conf1.duty_scale = duty_scale;
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
static esp_err_t ledc_set_channel_timer(ledc_mode_t speed_mode, uint32_t channel, uint32_t timer_idx)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
LEDC.high_speed_channel[channel].conf0.timer_sel = timer_idx;
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
static esp_err_t ledc_timer_rst(ledc_mode_t speed_mode, uint32_t timer_sel)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
LEDC.high_speed_timer[timer_sel].conf.rst = 1;
|
||||
LEDC.high_speed_timer[timer_sel].conf.rst = 0;
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ESP_OK;
|
||||
}
|
||||
static esp_err_t ledc_enable_intr_type(ledc_mode_t speed_mode, uint32_t channel, ledc_intr_type_t type)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
uint32_t value;
|
||||
uint32_t intr_type = type;
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
value = LEDC.int_ena.val;
|
||||
if(intr_type & LEDC_INTR_FADE_END) {
|
||||
LEDC.int_ena.val = value | BIT(8 + channel);
|
||||
} else {
|
||||
LEDC.int_ena.val = (value & (~(BIT(8 + channel))));
|
||||
}
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
esp_err_t ledc_isr_register(uint32_t ledc_intr_num, void (*fn)(void*), void * arg)
|
||||
{
|
||||
if(fn == NULL)
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
ESP_INTR_DISABLE(ledc_intr_num);
|
||||
intr_matrix_set(xPortGetCoreID(), ETS_LEDC_INTR_SOURCE, ledc_intr_num);
|
||||
xt_set_interrupt_handler(ledc_intr_num, fn, arg);
|
||||
ESP_INTR_ENABLE(ledc_intr_num);
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
esp_err_t ledc_config(ledc_config_t* ledc_conf)
|
||||
{
|
||||
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_LEDC_CLK_EN);
|
||||
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_LEDC_RST);
|
||||
|
||||
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 freq_hz = ledc_conf->freq_hz;
|
||||
uint32_t timer_select = ledc_conf->timer_src;
|
||||
uint32_t duty_depth = ledc_conf->duty_depth;
|
||||
uint32_t intr_type = ledc_conf->intr_type;
|
||||
uint32_t duty = ledc_conf->duty;
|
||||
uint64_t div_param = 0;
|
||||
uint32_t precision = 0;
|
||||
if(!ledc_is_valid_channel(ledc_channel))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
if(gpio_num >= GPIO_NUM_34 || gpio_num == 20 || gpio_num == 24 || gpio_num == 28 || gpio_num == 29 || gpio_num == 30
|
||||
|| gpio_num == 31) {
|
||||
LEDC_ERROR("GPIO number error: IO%d\n ", gpio_num);
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
}
|
||||
if(gpio_num >= GPIO_PIN_COUNT || 0 == GPIO_PIN_MUX_REG[gpio_num]) {
|
||||
LEDC_ERROR("io_num=%d does not exist\n", gpio_num);
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
}
|
||||
if(freq_hz == 0 || duty_depth == 0 || duty_depth > LEDC_DUTY_DEPTH_15_BIT) {
|
||||
LEDC_ERROR("freq_hz=%u duty_depth=%u\n", div_param, duty_depth);
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
}
|
||||
if(timer_select > LEDC_TIMER3) {
|
||||
LEDC_ERROR("Time Select %u\n", timer_select);
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
}
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
esp_err_t ret = ESP_OK;
|
||||
/*gpio matrix ledc pwm signal*/
|
||||
PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[gpio_num], 2);
|
||||
gpio_set_direction(gpio_num, GPIO_MODE_OUTPUT);
|
||||
gpio_matrix_out(gpio_num, LEDC_HS_SIG_OUT0_IDX + ledc_channel, 0, 0);
|
||||
/*configure ledc param*/
|
||||
/*calculate the div_param and select which base clock and first we will select the apb_clk */
|
||||
precision = (0x1 << duty_depth); //2**depth
|
||||
div_param = (uint64_t) LEDC_APB_CLK_HZ * 256 / freq_hz / precision; //8bit fragment
|
||||
/*Fail ,because the div num overflow or too small*/
|
||||
if(div_param <= 256 || div_param > LEDC_DIV_NUM_HSTIMER0) { //REF TICK
|
||||
/*Selet the reference tick*/
|
||||
div_param = (uint64_t) LEDC_REF_CLK_HZ * 256 / freq_hz / precision;
|
||||
if(div_param <= 256 || div_param > LEDC_DIV_NUM_HSTIMER0_V) {
|
||||
LEDC_ERROR("div param err,div_param=%u\n", div_param);
|
||||
ret = ESP_FAIL;
|
||||
}
|
||||
ledc_timer_config(speed_mode, timer_select, div_param, duty_depth, LEDC_REF_TICK);
|
||||
ledc_set_channel_timer(speed_mode, ledc_channel, timer_select);
|
||||
} else { //APB TICK
|
||||
ledc_timer_config(speed_mode, timer_select, div_param, duty_depth, LEDC_APB_CLK);
|
||||
ledc_set_channel_timer(speed_mode, ledc_channel, timer_select);
|
||||
}
|
||||
ledc_timer_rst(speed_mode, timer_select);
|
||||
ledc_set_duty(speed_mode, ledc_channel, duty);
|
||||
ledc_enable_intr_type(speed_mode, ledc_channel, intr_type);
|
||||
LEDC_INFO("LEDC_PWM CHANNEL %1u|GPIO %02u|FreHz %05u|Duty %04u|Depth %04u|Time %01u|SourceClk %01u|Divparam %u\n",
|
||||
ledc_channel, gpio_num, freq_hz, duty, duty_depth, timer_select, timer_source_clk_flag, div_param
|
||||
);
|
||||
ledc_update(speed_mode, ledc_channel);
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
esp_err_t ledc_update(ledc_mode_t speed_mode, ledc_channel_t channel)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
if(!ledc_is_valid_channel(channel))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
LEDC.high_speed_channel[channel].conf0.sig_out_en = 1;
|
||||
LEDC.high_speed_channel[channel].conf1.duty_start = 1;
|
||||
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)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
if(!ledc_is_valid_channel(channel))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
LEDC.high_speed_channel[channel].conf0.idle_lv = idle_level;
|
||||
LEDC.high_speed_channel[channel].conf0.sig_out_en = 0;
|
||||
LEDC.high_speed_channel[channel].conf1.duty_start = 0;
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ESP_OK;
|
||||
}
|
||||
esp_err_t ledc_set_fade(ledc_mode_t speed_mode, uint32_t channel, uint32_t duty, ledc_duty_direction_t fade_direction,
|
||||
uint32_t step_num, uint32_t duty_cyle_num, uint32_t duty_scale)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
if(!ledc_is_valid_channel(channel))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
if(fade_direction > LEDC_DUTY_DIR_INCREASE) {
|
||||
LEDC_ERROR("Duty direction err\n");
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
}
|
||||
if(step_num > 0X3FF || duty_cyle_num > 0X3FF || duty_scale > 0X3FF) {
|
||||
LEDC_ERROR("step_num=%u duty_cyle_num=%u duty_scale=%u\n", step_num, duty_cyle_num, duty_scale);
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
}
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
ledc_duty_config(speed_mode,
|
||||
channel, //uint32_t chan_num,
|
||||
0, //uint32_t hpoint_val,
|
||||
duty << 4, //uint32_t duty_val,the least 4 bits are decimal part
|
||||
fade_direction, //uint32_t increase,
|
||||
step_num, //uint32_t duty_num,
|
||||
duty_cyle_num, //uint32_t duty_cycle,
|
||||
duty_scale //uint32_t duty_scale
|
||||
);
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
esp_err_t ledc_set_duty(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
if(!ledc_is_valid_channel(channel))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
ledc_duty_config(speed_mode,
|
||||
channel, //uint32_t chan_num,
|
||||
0, //uint32_t hpoint_val,
|
||||
duty << 4, //uint32_t duty_val,the least 4 bits are decimal part
|
||||
1, //uint32_t increase,
|
||||
1, //uint32_t duty_num,
|
||||
1, //uint32_t duty_cycle,
|
||||
0 //uint32_t duty_scale
|
||||
);
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
uint32_t ledc_get_duty(ledc_mode_t speed_mode, ledc_channel_t channel)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
uint32_t duty = 0;
|
||||
duty = (LEDC.high_speed_channel[channel].duty_rd.duty_read >> 4);
|
||||
return duty;
|
||||
}
|
||||
|
||||
esp_err_t ledc_set_freq(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t freq_hz)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
if(!ledc_is_valid_channel(channel))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
esp_err_t ret = ESP_OK;
|
||||
uint32_t div_num = 0;
|
||||
/*Select timer*/
|
||||
uint32_t timer_select = LEDC.high_speed_channel[channel].conf0.timer_sel;
|
||||
/*Get timer limit*/
|
||||
uint32_t duty_depth = LEDC.high_speed_timer[timer_select].conf.timer_lim;
|
||||
uint32_t timer_source_clk = LEDC.high_speed_timer[timer_select].conf.tick_sel;
|
||||
uint32_t precision = (0x1 << duty_depth);
|
||||
if(timer_source_clk == LEDC_APB_CLK) {
|
||||
div_num = (uint64_t) LEDC_APB_CLK_HZ * 256 / freq_hz / precision;
|
||||
} else {
|
||||
div_num = (uint64_t) LEDC_REF_CLK_HZ * 256 / freq_hz / precision;
|
||||
}
|
||||
if(div_num <= 256 || div_num > LEDC_DIV_NUM_HSTIMER0) {
|
||||
LEDC_ERROR("channel %u,div param err,div_param=%u\n", channel, div_num);
|
||||
ret = ESP_FAIL;
|
||||
}
|
||||
LEDC.high_speed_timer[timer_select].conf.div_num = div_num;
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_channel_t channel)
|
||||
{
|
||||
if(!ledc_is_valid_mode(speed_mode))
|
||||
return 0;
|
||||
if(!ledc_is_valid_channel(channel))
|
||||
return ESP_ERR_INVALID_ARG;
|
||||
portENTER_CRITICAL(&ledc_spinlock);
|
||||
uint32_t freq = 0;
|
||||
uint32_t timer_select = LEDC.high_speed_channel[channel].conf0.timer_sel;
|
||||
uint32_t timer_source_clk = LEDC.high_speed_timer[timer_select].conf.tick_sel;
|
||||
uint32_t duty_depth = LEDC.high_speed_timer[timer_select].conf.timer_lim;
|
||||
uint32_t div_num = LEDC.high_speed_timer[timer_select].conf.div_num;
|
||||
uint32_t precision = (0x1 << duty_depth);
|
||||
if(timer_source_clk == LEDC_APB_CLK) {
|
||||
freq = ((uint64_t) LEDC_APB_CLK_HZ) * 256 / precision / div_num;
|
||||
} else {
|
||||
freq = ((uint64_t) LEDC_REF_CLK_HZ) * 256 / precision / div_num;
|
||||
}
|
||||
portEXIT_CRITICAL(&ledc_spinlock);
|
||||
return freq;
|
||||
}
|
||||
Ładowanie…
Reference in New Issue