Crash_Override/OVMS3-idf
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

add ledc driver code

Browse source
This commit is contained in:
Wangjialin 2016-09-23 09:21:37 +08:00
parent 28be72dbc7
commit 85cd269ef8
2 changed files with 669 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

301
components/driver/include/driver/ledc.h Normal file
View file

@ -0,0 +1,301 @@
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _DRIVER_LEDC_H_
#define _DRIVER_LEDC_H_
#include "esp_err.h"
#include "soc/soc.h"
#include "soc/ledc_reg.h"
#include "soc/ledc_reg.h"
#include "soc/ledc_struct.h"
#include "driver/gpio.h"
#ifdef __cplusplus
extern "C" {
#endif
#define LEDC_APB_CLK_HZ (APB_CLK_FREQ)
#define LEDC_REF_CLK_HZ (1*1000000)
typedef enum {
LEDC_HIGH_SPEED_MODE = 0, /*LEDC high speed speed_mode */
//in this version, we only support high speed speed_mode. We will access low speed speed_mode later
//LEDC_LOW_SPEED_MODE, /*LEDC low speed speed_mode */
LEDC_SPEED_MODE_MAX,
} ledc_mode_t;
typedef enum {
LEDC_INTR_DISABLE = 0, /*Disable LEDC interrupt */
LEDC_INTR_FADE_END, /*Enable LEDC interrupt */
} ledc_intr_type_t;
typedef enum {
LEDC_DUTY_DIR_DECREASE = 0, /*LEDC duty decrease direction */
LEDC_DUTY_DIR_INCREASE = 1, /*LEDC duty increase direction */
} ledc_duty_direction_t;
typedef enum {
LEDC_REF_TICK = 0, // 1MhZ
LEDC_APB_CLK, //80Mhz
}ledc_timer_src_t;
typedef enum {
LEDC_TIMER0 = 0, /*LEDC source time TIME0 */
LEDC_TIMER1, /*LEDC source time TIME1 */
LEDC_TIMER2, /*LEDC source time TIME2 */
LEDC_TIMER3, /*LEDC source time TIME3 */
} ledc_timer_source_t;
typedef enum {
LEDC_CHANNEL_0 = 0, /*LEDC channel 0 */
LEDC_CHANNEL_1, /*LEDC channel 1 */
LEDC_CHANNEL_2, /*LEDC channel 2 */
LEDC_CHANNEL_3, /*LEDC channel 3 */
LEDC_CHANNEL_4, /*LEDC channel 4 */
LEDC_CHANNEL_5, /*LEDC channel 5 */
LEDC_CHANNEL_6, /*LEDC channel 6 */
LEDC_CHANNEL_7, /*LEDC channel 7 */
} ledc_channel_t;
typedef enum {
LEDC_DUTY_DEPTH_10_BIT = 10, /*LEDC PWM depth 10Bit */
LEDC_DUTY_DEPTH_11_BIT = 11, /*LEDC PWM depth 11Bit */
LEDC_DUTY_DEPTH_12_BIT = 12, /*LEDC PWM depth 12Bit */
LEDC_DUTY_DEPTH_13_BIT = 13, /*LEDC PWM depth 13Bit */
LEDC_DUTY_DEPTH_14_BIT = 14, /*LEDC PWM depth 14Bit */
LEDC_DUTY_DEPTH_15_BIT = 15, /*LEDC PWM depth 15Bit */
} ledc_duty_depth_t;
typedef struct ledc_channel_t_config {
int gpio_num; /*the LEDC output gpio_num, if you want to use gpio16, ledc_config_t.gpio_num = 16*/
ledc_mode_t speed_mode; /*LEDC speed speed_mode*/
ledc_channel_t channel; /*LEDC channel(0 - 7)*/
ledc_intr_type_t intr_type; /*configure interrupt , Fade interrupt enable or Fade interrupt disable*/
ledc_timer_source_t timer_src; /*Select the timer source of channel (0 - 3)*/
uint32_t freq_hz; /*LEDC channel frequency(Hz)*/
uint32_t duty; /*LEDC channel duty,the duty range is [0,(2**duty_depth) - 1],*/
ledc_duty_depth_t duty_depth; /*LEDC channel duty depth*/
} ledc_config_t;
/**
* @brief LEDC common configuration
*
* User this Function,configure LEDC with the given channel/output gpio_num/interrupt/source timer/frequency(Hz)/LEDC depth
*
* @param[in] ledc_config_t
* ledc_config_t.speed_mode : LEDC speed speed_mode
* ledc_config_t.gpio_num : LEDC output gpio_num, if you want to use gpio16, ledc_config_t.gpio_num = 16
* ledc_config_t.channel : LEDC channel(0 - 7)
* ledc_config_t.intr_type : configure interrupt , Fade interrupt enable or Fade interrupt disable
* ledc_config_t.timer_src : Select the timer source of channel (0 - 3)
* When different channel ,select same timer ,their freq_hz and duty_depth must be the same
* ledc_config_t.freq_hz : LEDC channel frequency(Hz),
* When different channel ,select same time ,their freq_hz and duty_depth must be same
* ledc_config_t.duty : LEDC channel duty,the duty range is [0,(2**duty_depth) - 1],
* ledc_config_t.duty_depth : LEDC channel duty depth
* When different channel ,select same time ,their freq_hz and duty_depth must be same
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
* ESP_FAIL: spin_lock error
*
*/
esp_err_t ledc_config(ledc_config_t* ledc_conf);
/**
* @brief LEDC start
*
* Call this function to activate the LEDC updated parameters.
* After ledc_set_duty,ledc_set_fade, we need to call this function to update the settings.
*
* @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
*
* @param[in] channel : LEDC channel(0-7)
*
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
* ESP_FAIL: spin_lock error
*
*/
esp_err_t ledc_update(ledc_mode_t speed_mode, ledc_channel_t channel);
/**
* @brief LEDC stop
*
* Disable LEDC output,and set idle level
*
* @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
*
* @param[in] channel : LEDC channel(0-7)
*
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
* ESP_FAIL: spin_lock error
*/
esp_err_t ledc_stop(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t idle_level);
/**
* @brief LEDC set channel frequency(Hz)
*
* Set LEDC frequency(Hz)
*
* @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
*
* @param[in] channel : current channel(0-7)
*
* @param[in] freq_hz : set the LEDC frequency
*
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
* ESP_FAIL: spin_lock error
*/
esp_err_t ledc_set_freq(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t freq_hz);
/**
* @brief LEDC get channel frequency(Hz)
*
* @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
*
* @param[in] channel : LEDC channel(0-7)
*
* @return 0 : error
* others : current LEDC frequency
*
*/
uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_channel_t channel);
/**
* @brief LEDC set duty
*
* Set LEDC duty ,After the function calls the ledc_update function, the function can take effect.
*
* @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
*
* @param[in] channel : LEDC channel(0-7)
*
* @param[in] duty : set the LEDC duty ,the duty range is [0,(2**duty_depth) - 1]
*
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
* ESP_FAIL: spin_lock error
*/
esp_err_t ledc_set_duty(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty);
/**
* @brief LEDC get duty
*
* @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
*
* @param[in] channel : LEDC channel(0-7)
*
*
* @return current LEDC duty
*
*/
uint32_t ledc_get_duty(ledc_mode_t speed_mode, ledc_channel_t channel);
/**
* @brief LEDC set gradient
*
* Set LEDC gradient , After the function calls the ledc_update function , the function can take effect.
*
* @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
*
* @param[in] channel : LEDC channel(0-7)
*
* @param[in] duty : set the start of the gradient duty , the duty range is [0,(2**duty_depth) - 1]
*
* @param[in] gradule_direction : set the direction of the gradient
*
* @param[in] step_num : set the number of the gradient
*
* @param[in] duty_cyle_num : set how many LEDC tick each time the gradient lasts
*
* @param[in] duty_scale : set gradient change amplitude
*
* @return ESP_OK : success
* ESP_ERR_INVALID_ARG : parameter error
* ESP_FAIL : spin_lock error
*/
esp_err_t ledc_set_fade(ledc_mode_t speed_mode, uint32_t channel, uint32_t duty, ledc_duty_direction_t gradule_direction,
uint32_t step_num, uint32_t duty_cyle_num, uint32_t duty_scale);
/**
* @brief register LEDC interrupt handler, the handler is an ISR.
* The handler will be attached to the same CPU core that this function is running on.
* Users should know that which CPU is running and then pick a INUM that is not used by system.
* We can find the information of INUM and interrupt level in soc.h.
* TODO: to move INUM options to menu_config
* @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
* @parameter void (* fn)(void* ) : interrupt handler function.
* Note that the handler function MUST be defined with attribution of "IRAM_ATTR".
* @parameter void * arg : parameter for handler function
*
* @return ESP_OK : success ;
* ESP_ERR_INVALID_ARG : fucntion ptr error.
* ESP_FAIL : spin_lock error
*/
esp_err_t ledc_isr_register(uint32_t ledc_intr_num, void (*fn)(void*), void * arg);
/***************************EXAMPLE**********************************
*
*
* ----------------EXAMPLE OF LEDC SETTING ---------------------
* ledc_config_t ledc_conf = {
* .channel = LEDC_CHANNEL_0; //set LEDC channel 0
* .duty = 1000; //set the duty for initialization.(duty range is 0 ~ ((2**duty_depth)-1)
* .freq_hz = 1000; //set frequency , e.g.,1KHz
* .gpio_num = 16; //GPIO number
* .intr_type = LEDC_INTR_FADE_END; //GPIO INTR TYPE, as an example,we enable fade_end interrupt here.
* .duty_depth = LEDC_DUTY_DEPTH_12_BIT; //set duty_depth , (duty range is 0 ~ ((2**duty_depth)-1)
* .speed_mode = LEDC_HIGH_SPEED_MODE; //set LEDC mode, from ledc_mode_t
* .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
* }
* ledc_config(&ledc_conf); //setup the configuration
* ----------------EXAMPLE OF SETTING DUTY --- -----------------
* uint32_t ledc_channel = LEDC_CHANNEL_0; //LEDC channel(0-73)
* uint32_t duty = 2000; //duty range is 0 ~ ((2**duty_depth)-1)
* LEDC_set_duty(LEDC_HIGH_SPEED_MODE,ledc_channel,duty); //set speed mode, channel, and duty.
* ledc_update(LEDC_HIGH_SPEED_MODE,ledc_channel); //after set duty, we need to call ledc_update to update the settings.
*
*
* ----------------EXAMPLE OF LEDC INTERRUPT ------------------
* //we have fade_end interrupt and counter overflow interrupt. we just give an example of fade_end interrupt here.
* ledc_isr_register(18, ledc_isr_handler, NULL); //hook the isr handler for LEDC interrupt
* //the first parameter is INUM, you can pick one form interrupt level 1/2 which is not used by the system.
* //NOTE1:user should arrange the INUMs that used, better not to use a same INUM for different interrupt source.
* //NOTE2:do not pick the INUM that already occupied by the system.
* //NOTE3:refer to soc.h to check which INUMs that can be used.
* ----------------EXAMPLE OF INTERRUPT HANDLER ---------------
* #include "esp_attr.h"
* void IRAM_ATTR ledc_isr_handler(void* arg) //we should add 'IRAM_ATTR' attribution when we declare the isr function
* {
* uint32_t intr_st = LEDC.int_st.val; //read LEDC interrupt status.
*
* //you will find which channels have triggered fade_end interrupt here,
* //then , you can post some event to RTOS queue to process the event.
* //later we will add a queue in the driver code.
*
* LEDC.int_clr.val = intr_st; //clear LEDC interrupt status.
* }
*
*
*--------------------------END OF EXAMPLE --------------------------
*/
#ifdef __cplusplus
}
#endif
#endif /* _DRIVER_LEDC_H_ */

368
components/driver/ledc.c Normal file
View file

@ -0,0 +1,368 @@
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <esp_types.h>
#include "esp_intr.h"
#include "freertos/FreeRTOS.h"
#include "freertos/semphr.h"
#include "freertos/xtensa_api.h"
#include "soc/dport_reg.h"
#include "soc/gpio_sig_map.h"
#include "driver/ledc.h"
//TODO: Move these debug options to menuconfig
#define LEDC_DBG_WARING_ENABLE (0)
#define LEDC_DBG_ERROR_ENABLE (0)
#define LEDC_INFO_ENABLE (0)
#define LEDC_DBG_ENABLE (0)
//DBG INFOR
#if LEDC_DBG_ENABLE
#define LEDC_DBG(format,...) do{\
ets_printf("[dbg][%s#%u]",__FUNCTION__,__LINE__);\
ets_printf(format,##__VA_ARGS__);\
}while(0)
#else
#define LEDC_DBG(...)
#endif
#if LEDC_INFO_ENABLE
#define LEDC_INFO(format,...) do{\
ets_printf("[info][%s#%u]",__FUNCTION__,__LINE__);\
ets_printf(format,##__VA_ARGS__);\
}while(0)
#else
#define LEDC_INFO(...)
#endif
#if LEDC_DBG_WARING_ENABLE
#define LEDC_WARING(format,...) do{\
ets_printf("[waring][%s#%u]",__FUNCTION__,__LINE__);\
ets_printf(format,##__VA_ARGS__);\
}while(0)
#else
#define LEDC_WARING(...)
#endif
#if LEDC_DBG_ERROR_ENABLE
#define LEDC_ERROR(format,...) do{\
ets_printf("[error][%s#%u]",__FUNCTION__,__LINE__);\
ets_printf(format,##__VA_ARGS__);\
}while(0)
#else
#define LEDC_ERROR(...)
#endif
static portMUX_TYPE ledc_spinlock = portMUX_INITIALIZER_UNLOCKED;
static int ledc_is_valid_channel(uint32_t channel)
{
if(channel > LEDC_CHANNEL_7) {
LEDC_ERROR("LEDC CHANNEL ERR: %d\n",channel);
return 0;
}
return 1;
}
static int ledc_is_valid_mode(uint32_t mode)
{
if(mode >= LEDC_SPEED_MODE_MAX) {
LEDC_ERROR("LEDC MODE ERR: %d\n",mode);
return 0;
}
return 1;
}
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)
{
if(!ledc_is_valid_mode(speed_mode))
return ESP_ERR_INVALID_ARG;
portENTER_CRITICAL(&ledc_spinlock);
LEDC.high_speed_timer[timer_sel].conf.div_num = div_num;
LEDC.high_speed_timer[timer_sel].conf.tick_sel = clk;
LEDC.high_speed_timer[timer_sel].conf.timer_lim = timer_lim;
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;
}