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Modify LEDC driver

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1. configure LEDC timer saparately
2. add peripher_crtl.c/.h
    To enable the peripheral modules, we have to set/clear the control register in dport_reg.h.
    These bits are disabled by default and they are all in a same register, so we need to add a lock on that.
3. add include esp_err.h in gpio.h
This commit is contained in:
Wangjialin 2016-09-28 23:20:34 +08:00
parent 9cfb3227a3
commit e523a2532a
5 changed files with 383 additions and 105 deletions
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2
components/driver/include/driver/gpio.h
View file

@ -14,7 +14,7 @@
#ifndef _DRIVER_GPIO_H_
#define _DRIVER_GPIO_H_
#include "esp_err.h"
#include <esp_types.h>
#include "soc/gpio_reg.h"
#include "soc/gpio_struct.h"

126
components/driver/include/driver/ledc.h
View file

@ -20,6 +20,7 @@
#include "soc/ledc_reg.h"
#include "soc/ledc_struct.h"
#include "driver/gpio.h"
#include "driver/periph_ctrl.h"
#ifdef __cplusplus
extern "C" {
@ -51,10 +52,10 @@ typedef enum {
} ledc_clk_src_t;
typedef enum {
LEDC_TIMER0 = 0, /*LEDC source timer TIMER0 */
LEDC_TIMER1, /*LEDC source timer TIMER1 */
LEDC_TIMER2, /*LEDC source timer TIMER2 */
LEDC_TIMER3, /*LEDC source timer TIMER3 */
LEDC_TIMER_0 = 0, /*LEDC source timer TIMER0 */
LEDC_TIMER_1, /*LEDC source timer TIMER1 */
LEDC_TIMER_2, /*LEDC source timer TIMER2 */
LEDC_TIMER_3, /*LEDC source timer TIMER3 */
} ledc_timer_t;
typedef enum {
@ -77,40 +78,57 @@ typedef enum {
LEDC_TIMER_15_BIT = 15, /*LEDC PWM depth 15Bit */
} ledc_timer_bit_t;
typedef struct ledc_channel_t_config {
typedef struct {
int gpio_num; /*the LEDC output gpio_num, if you want to use gpio16, gpio_num = 16*/
ledc_mode_t speed_mode; /*LEDC speed speed_mode, high-speed mode or low-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_t timer_sel; /*Select the timer source of channel (0 - 3)*/
uint32_t freq_hz; /*LEDC channel frequency(Hz)*/
ledc_timer_t timer_sel; /*Select the timer source of channel (0 - 3)*/
uint32_t duty; /*LEDC channel duty, the duty range is [0, (2**bit_num) - 1], */
} ledc_channel_config_t;
typedef struct {
ledc_mode_t speed_mode; /*LEDC speed speed_mode, high-speed mode or low-speed mode*/
ledc_timer_bit_t bit_num; /*LEDC channel duty depth*/
} ledc_config_t;
ledc_timer_t timer_num; /*The timer source of channel (0 - 3)*/
uint32_t freq_hz; /*LEDC timer frequency(Hz)*/
} ledc_timer_config_t;
/**
* @brief LEDC common configuration
* @brief LEDC channel configuration
*
* User this Function, configure LEDC with the given channel/output gpio_num/interrupt/source timer/frequency(Hz)/LEDC depth
* User this Function, configure LEDC channel 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_sel : Select the timer source of channel (0 - 3)
* When different channel, select same timer, their freq_hz and bit_num must be the same
* ledc_config_t.freq_hz : LEDC channel frequency(Hz),
* When different channel, select same time, their freq_hz and bit_num must be same
* ledc_config_t.duty : LEDC channel duty, the duty range is [0, (2**bit_num) - 1],
* ledc_config_t.bit_num : LEDC channel duty depth
* When different channel, select same time, their freq_hz and bit_num must be same
* @param[in] ledc_channel_config_t
* ledc_channel_config_t.speed_mode : LEDC speed speed_mode
* ledc_channel_config_t.gpio_num : LEDC output gpio_num, if you want to use gpio16, ledc_channel_config_t.gpio_num = 16
* ledc_channel_config_t.channel : LEDC channel(0 - 7)
* ledc_channel_config_t.intr_type : configure interrupt, Fade interrupt enable or Fade interrupt disable
* ledc_channel_config_t.timer_sel : Select the timer source of channel (0 - 3), high speed channel must bind with high speed timer.
* ledc_channel_config_t.duty : LEDC channel duty, the duty range is [0, (2**timer_bit_num) - 1],
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
*
*/
esp_err_t ledc_channel_config(ledc_channel_config_t* ledc_conf);
/**
* @brief LEDC timer configuration
*
* User this Function, configure LEDC timer with the given source timer/frequency(Hz)/bit_num
*
* @param[in] ledc_timer_config_t
* ledc_timer_config_t.speed_mode : LEDC speed speed_mode
* ledc_timer_config_t.timer_num : Select the timer source of channel (0 - 3)
* ledc_timer_config_t.freq_hz : LEDC channel frequency(Hz),
* ledc_timer_config_t.bit_num : LEDC channel duty depth
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
* ESP_FAIL: Can not find a proper pre-divider number base on the given frequency and the current bit_num.
*
*/
esp_err_t ledc_config(ledc_config_t* ledc_conf);
esp_err_t ledc_timer_config(ledc_timer_config_t* timer_conf);
/**
* @brief LEDC update channel parameters
@ -120,13 +138,13 @@ esp_err_t ledc_config(ledc_config_t* ledc_conf);
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] channel : LEDC channel(0-7)
* @param[in] channel : LEDC channel(0-7), select from ledc_channel_t
*
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
*
*/
esp_err_t ledc_update(ledc_mode_t speed_mode, ledc_channel_t channel);
esp_err_t ledc_update_duty(ledc_mode_t speed_mode, ledc_channel_t channel);
/**
* @brief LEDC stop
@ -135,7 +153,7 @@ esp_err_t ledc_update(ledc_mode_t speed_mode, ledc_channel_t channel);
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] channel : LEDC channel(0-7)
* @param[in] channel : LEDC channel(0-7), select from ledc_channel_t
*
* @return ESP_OK: success
* ESP_ERR_INVALID_ARG: parameter error
@ -149,7 +167,7 @@ esp_err_t ledc_stop(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t idl
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] timer_num : LEDC timer index(0-3)
* @param[in] timer_num : LEDC timer index(0-3), select from ledc_timer_t
*
* @param[in] freq_hz : set the LEDC frequency
*
@ -164,7 +182,7 @@ esp_err_t ledc_set_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num, uint32_t
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] timer_num : LEDC timer index(0-3)
* @param[in] timer_num : LEDC timer index(0-3), select from ledc_timer_t
*
* @return 0 : error
* others : current LEDC frequency
@ -175,11 +193,11 @@ uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num);
/**
* @brief LEDC set duty
*
* Set LEDC duty, After the function calls the ledc_update function, the function can take effect.
* Set LEDC duty, After the function calls the ledc_update_duty function, the function can take effect.
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] channel : LEDC channel(0-7)
* @param[in] channel : LEDC channel(0-7), select from ledc_channel_t
*
* @param[in] duty : set the LEDC duty, the duty range is [0, (2**bit_num) - 1]
*
@ -193,7 +211,7 @@ esp_err_t ledc_set_duty(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] channel : LEDC channel(0-7)
* @param[in] channel : LEDC channel(0-7), select from ledc_channel_t
*
*
* @return -1: parameter error
@ -205,11 +223,11 @@ int 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.
* Set LEDC gradient, After the function calls the ledc_update_duty function, the function can take effect.
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] channel : LEDC channel(0-7)
* @param[in] channel : LEDC channel(0-7), select from ledc_channel_t
*
* @param[in] duty : set the start of the gradient duty, the duty range is [0, (2**bit_num) - 1]
*
@ -233,10 +251,10 @@ esp_err_t ledc_set_fade(ledc_mode_t speed_mode, uint32_t channel, uint32_t duty,
* 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.
* @param[in] uint32_t ledc_intr_num : LEDC interrupt number, check the info in soc.h, and please see the core-isa.h for more details
* @param[in] 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
* @param[in] void * arg : parameter for handler function
*
* @return ESP_OK : success ;
* ESP_ERR_INVALID_ARG : function ptr error.
@ -260,14 +278,14 @@ esp_err_t ledc_isr_register(uint32_t ledc_intr_num, void (*fn)(void*), void * ar
* other value: current LEDC duty
*
*/
esp_err_t ledc_timer_config(ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t div_num, uint32_t bit_num, ledc_clk_src_t clk_src);
esp_err_t ledc_timer_set(ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t div_num, uint32_t bit_num, ledc_clk_src_t clk_src);
/**
* @brief reset LEDC timer
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] timer_sel : LEDC timer index(0-3)
* @param[in] timer_sel : LEDC timer index(0-3), select from ledc_timer_t
*
*
* @return ESP_ERR_INVALID_ARG: parameter error
@ -281,7 +299,7 @@ esp_err_t ledc_timer_rst(ledc_mode_t speed_mode, uint32_t timer_sel);
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] timer_sel : LEDC timer index(0-3)
* @param[in] timer_sel : LEDC timer index(0-3), select from ledc_timer_t
*
*
* @return ESP_ERR_INVALID_ARG: parameter error
@ -295,7 +313,7 @@ esp_err_t ledc_timer_pause(ledc_mode_t speed_mode, uint32_t timer_sel);
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] timer_sel : LEDC timer index(0-3)
* @param[in] timer_sel : LEDC timer index(0-3), select from ledc_timer_t
*
*
* @return ESP_ERR_INVALID_ARG: parameter error
@ -309,9 +327,9 @@ esp_err_t ledc_timer_resume(ledc_mode_t speed_mode, uint32_t timer_sel);
*
* @param[in] speed_mode : select the LEDC speed_mode, high-speed mode and low-speed mode, now we only support high-speed mode. We will access low-speed mode in next version
*
* @param[in] channel : LEDC channel index(0-7)
* @param[in] channel : LEDC channel index(0-7), select from ledc_channel_t
*
* @param[in] timer_idx : LEDC timer index(0-3)
* @param[in] timer_idx : LEDC timer index(0-3), select from ledc_timer_t
*
*
* @return ESP_ERR_INVALID_ARG: parameter error
@ -324,22 +342,34 @@ esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, uint32_t channel, uint
*
*
* ----------------EXAMPLE OF LEDC SETTING ---------------------
* ledc_config_t ledc_conf = {
* //1. enable LEDC
* periph_module_enable(PERIPH_LEDC_MODULE); //enable LEDC module, or you can not set any register of it.
*
* //2. set LEDC timer
* ledc_timer_config_t timer_conf = {
* .bit_num = LEDC_TIMER_12_BIT, //set timer counter bit number
* .freq_hz = 1000, //set frequency of pwm, here, 1000Hz
* .speed_mode = LEDC_HIGH_SPEED_MODE //timer mode,
* .timer_num = LEDC_TIMER_0, //timer number
* };
* ledc_timer_config(&timer_conf); //setup timer.
*
* //3. set LEDC channel
* ledc_channel_config_t ledc_conf = {
* .channel = LEDC_CHANNEL_0; //set LEDC channel 0
* .duty = 1000; //set the duty for initialization.(duty range is 0 ~ ((2**bit_num)-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.
* .bit_num = LEDC_TIMER_12_BIT; //set bit_num, (duty range is 0 ~ ((2**bit_num)-1)
* .speed_mode = LEDC_HIGH_SPEED_MODE; //set LEDC mode, from ledc_mode_t
* .timer_sel = LEDC_TIMER0; //set LEDC timer source, if different channel use one timer, the frequency and bit_num of these channels should be the same
* .timer_sel = LEDC_TIMER_0; //set LEDC timer source, if different channel use one timer, the frequency and bit_num of these channels should be the same
* }
* ledc_config(&ledc_conf); //setup the configuration
* ledc_channel_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**bit_num)-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.
* ledc_update_duty(LEDC_HIGH_SPEED_MODE, ledc_channel); //after set duty, we need to call ledc_update_duty to update the settings.
*
*
* ----------------EXAMPLE OF LEDC INTERRUPT ------------------

70
components/driver/include/driver/periph_ctrl.h Normal file
View file

@ -0,0 +1,70 @@
// 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_PERIPH_CTRL_H_
#define _DRIVER_PERIPH_CTRL_H_
#include "esp_err.h"
#include "soc/soc.h"
#include "soc/dport_reg.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
PERIPH_LEDC_MODULE = 0,
PERIPH_UART0_MODULE,
PERIPH_UART1_MODULE,
PERIPH_UART2_MODULE,
PERIPH_I2C0_MODULE,
PERIPH_I2C1_MODULE,
PERIPH_I2S0_MODULE,
PERIPH_I2S1_MODULE,
PERIPH_TIMG0_MODULE,
PERIPH_TIMG1_MODULE,
PERIPH_PWM0_MODULE,
PERIPH_PWM1_MODULE,
PERIPH_PWM2_MODULE,
PERIPH_PWM3_MODULE,
PERIPH_UHCI0_MODULE,
PERIPH_UHCI1_MODULE,
} periph_module_t;
/**
* @brief enable peripheral module
*
* @param[in] periph : Peripheral module name
*
*
* @return NULL
*
*/
void periph_module_enable(periph_module_t periph);
/**
* @brief disable peripheral module
*
* @param[in] periph : Peripheral module name
*
*
* @return NULL
*
*/
void periph_module_disable(periph_module_t periph);
#ifdef __cplusplus
}
#endif
#endif /* _DRIVER_PERIPH_CTRL_H_ */

120
components/driver/ledc.c
View file

@ -16,7 +16,6 @@
#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"
@ -84,14 +83,14 @@ static bool ledc_is_valid_mode(uint32_t mode)
static bool ledc_is_valid_timer(int timer)
{
if(timer > LEDC_TIMER3) {
if(timer > LEDC_TIMER_3) {
LEDC_ERROR("LEDC TIMER ERR: %d\n", timer);
return false;
}
return true;
}
esp_err_t ledc_timer_config(ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t div_num, uint32_t bit_num, ledc_clk_src_t clk_src)
esp_err_t ledc_timer_set(ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_t div_num, uint32_t bit_num, ledc_clk_src_t clk_src)
{
if(!ledc_is_valid_mode(speed_mode)) {
return ESP_ERR_INVALID_ARG;
@ -103,7 +102,7 @@ esp_err_t ledc_timer_config(ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint
LEDC.timer_group[speed_mode].timer[timer_sel].conf.div_num = div_num;
LEDC.timer_group[speed_mode].timer[timer_sel].conf.tick_sel = clk_src;
LEDC.timer_group[speed_mode].timer[timer_sel].conf.bit_num = bit_num;
if(speed_mode == LEDC_HIGH_SPEED_MODE) {
if(speed_mode != LEDC_HIGH_SPEED_MODE) {
LEDC.timer_group[speed_mode].timer[timer_sel].conf.low_speed_update = 1;
}
portEXIT_CRITICAL(&ledc_spinlock);
@ -213,45 +212,28 @@ esp_err_t ledc_isr_register(uint32_t ledc_intr_num, void (*fn)(void*), void * ar
return ESP_OK;
}
esp_err_t ledc_config(ledc_config_t* ledc_conf)
esp_err_t ledc_timer_config(ledc_timer_config_t* timer_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);
int freq_hz = timer_conf->freq_hz;
int bit_num = timer_conf->bit_num;
int timer_num = timer_conf->timer_num;
int speed_mode = timer_conf->speed_mode;
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_sel;
uint32_t bit_num = ledc_conf->bit_num;
uint32_t intr_type = ledc_conf->intr_type;
uint32_t duty = ledc_conf->duty;
uint32_t div_param = 0;
uint32_t precision = 0;
int timer_clk_src = 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_IS_VALID_OUTPUT_GPIO(gpio_num)) {
LEDC_ERROR("GPIO number error: IO%d\n ", gpio_num);
return ESP_ERR_INVALID_ARG;
}
if(freq_hz == 0 || bit_num == 0 || bit_num > LEDC_TIMER_15_BIT) {
LEDC_ERROR("freq_hz=%u bit_num=%u\n", div_param, bit_num);
LEDC_ERROR("freq_hz=%u bit_num=%u\n", freq_hz, bit_num);
return ESP_ERR_INVALID_ARG;
}
if(timer_select > LEDC_TIMER3) {
LEDC_ERROR("Time Select %u\n", timer_select);
if(timer_num > LEDC_TIMER_3) {
LEDC_ERROR("Time Select %u\n", timer_num);
return ESP_ERR_INVALID_ARG;
}
portENTER_CRITICAL(&ledc_spinlock);
esp_err_t ret = ESP_OK;
precision = (0x1 << bit_num); //2**depth
div_param = ((uint64_t) LEDC_APB_CLK_HZ << 8) / freq_hz / precision; //8bit fragment
uint32_t precision = (0x1 << bit_num); //2**depth
uint64_t div_param = ((uint64_t) LEDC_APB_CLK_HZ << 8) / freq_hz / precision; //8bit fragment
int timer_clk_src;
/*Fail ,because the div_num overflow or too small*/
if(div_param <= 256 || div_param > LEDC_DIV_NUM_HSTIMER0_V) { //REF TICK
/*Selet the reference tick*/
@ -264,33 +246,59 @@ esp_err_t ledc_config(ledc_config_t* ledc_conf)
} else { //APB TICK
timer_clk_src = LEDC_APB_CLK;
}
//1. set timer parameters
// timer settings decide the clk of counter and the period of PWM
ledc_timer_config(speed_mode, timer_select, div_param, bit_num, timer_clk_src);
// reset timer.
ledc_timer_rst(speed_mode, timer_select);
//2. set channel parameters
// channel parameters decide how the waveform looks like in one period
// set channel duty, duty range is (0 ~ ((2 ** bit_num) - 1))
ledc_set_duty(speed_mode, ledc_channel, duty);
//update duty settings
ledc_update(speed_mode, ledc_channel);
//3. bind the channel with the timer
ledc_bind_channel_timer(speed_mode, ledc_channel, timer_select);
//4. set interrupt type
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, bit_num, timer_select, timer_clk_src, div_param
);
/*5. 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);
gpio_matrix_out(gpio_num, LEDC_HS_SIG_OUT0_IDX + ledc_channel, 0, 0);
portEXIT_CRITICAL(&ledc_spinlock);
/*set timer parameters*/
/*timer settings decide the clk of counter and the period of PWM*/
ledc_timer_set(speed_mode, timer_num, div_param, bit_num, timer_clk_src);
/* reset timer.*/
ledc_timer_rst(speed_mode, timer_num);
return ret;
}
esp_err_t ledc_update(ledc_mode_t speed_mode, ledc_channel_t channel)
esp_err_t ledc_channel_config(ledc_channel_config_t* 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;
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_IS_VALID_OUTPUT_GPIO(gpio_num)) {
LEDC_ERROR("GPIO number error: IO%d\n ", gpio_num);
return ESP_ERR_INVALID_ARG;
}
if(timer_select > LEDC_TIMER_3) {
LEDC_ERROR("Time Select %u\n", timer_select);
return ESP_ERR_INVALID_ARG;
}
esp_err_t ret = ESP_OK;
/*set channel parameters*/
/* channel parameters decide how the waveform looks like in one period*/
/* set channel duty, duty range is (0 ~ ((2 ** bit_num) - 1))*/
ledc_set_duty(speed_mode, ledc_channel, duty);
/*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);
LEDC_INFO("LEDC_PWM CHANNEL %1u|GPIO %02u|Duty %04u|Time %01u\n",
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);
gpio_matrix_out(gpio_num, LEDC_HS_SIG_OUT0_IDX + ledc_channel, 0, 0);
return ret;
}
esp_err_t ledc_update_duty(ledc_mode_t speed_mode, ledc_channel_t channel)
{
if(!ledc_is_valid_mode(speed_mode)) {
return ESP_ERR_INVALID_ARG;

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components/driver/periph_ctrl.c Normal file
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// 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 "driver/periph_ctrl.h"
static portMUX_TYPE periph_spinlock = portMUX_INITIALIZER_UNLOCKED;
void periph_module_enable(periph_module_t periph)
{
portENTER_CRITICAL(&periph_spinlock);
switch(periph) {
case PERIPH_LEDC_MODULE:
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);
break;
case PERIPH_UART0_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_UART_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_UART_RST);
break;
case PERIPH_UART1_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_UART1_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_UART1_RST);
break;
case PERIPH_UART2_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_UART2_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_UART2_RST);
break;
case PERIPH_I2C0_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_I2C_EXT0_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_I2C_EXT0_RST);
break;
case PERIPH_I2C1_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_I2C_EXT1_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_I2C_EXT1_RST);
break;
case PERIPH_I2S0_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_I2S0_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_I2S0_RST);
break;
case PERIPH_I2S1_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_I2S1_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_I2S1_RST);
break;
case PERIPH_TIMG0_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_TIMERGROUP_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_TIMERGROUP_RST);
break;
case PERIPH_TIMG1_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_TIMERGROUP1_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_TIMERGROUP1_RST);
break;
case PERIPH_PWM0_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_PWM0_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_PWM0_RST);
break;
case PERIPH_PWM1_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_PWM1_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_PWM1_RST);
break;
case PERIPH_PWM2_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_PWM2_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_PWM2_RST);
break;
case PERIPH_PWM3_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_PWM3_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_PWM3_RST);
break;
case PERIPH_UHCI0_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_UHCI0_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_UHCI0_RST);
break;
case PERIPH_UHCI1_MODULE:
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_UHCI1_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_UHCI1_RST);
break;
default:
break;
}
portENTER_CRITICAL(&periph_spinlock);
}
void periph_module_disable(periph_module_t periph)
{
portENTER_CRITICAL(&periph_spinlock);
switch(periph) {
case PERIPH_LEDC_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_LEDC_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_LEDC_RST);
break;
case PERIPH_UART0_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_UART_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_UART_RST);
break;
case PERIPH_UART1_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_UART1_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_UART1_RST);
break;
case PERIPH_UART2_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_UART2_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_UART2_RST);
break;
case PERIPH_I2C0_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_I2C_EXT0_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_I2C_EXT0_RST);
break;
case PERIPH_I2C1_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_I2C_EXT0_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_I2C_EXT1_RST);
break;
case PERIPH_I2S0_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_I2S0_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_I2S0_RST);
break;
case PERIPH_I2S1_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_I2S1_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_I2S1_RST);
break;
case PERIPH_TIMG0_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_TIMERGROUP_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_TIMERGROUP_RST);
break;
case PERIPH_TIMG1_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_TIMERGROUP1_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_TIMERGROUP1_RST);
break;
case PERIPH_PWM0_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_PWM0_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_PWM0_RST);
break;
case PERIPH_PWM1_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_PWM1_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_PWM1_RST);
break;
case PERIPH_PWM2_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_PWM2_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_PWM2_RST);
break;
case PERIPH_PWM3_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_PWM3_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_PWM3_RST);
break;
case PERIPH_UHCI0_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_UHCI0_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_UHCI0_RST);
break;
case PERIPH_UHCI1_MODULE:
CLEAR_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_UHCI1_CLK_EN);
SET_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_UHCI1_RST);
break;
default:
break;
}
portENTER_CRITICAL(&periph_spinlock);
}