mirror of
https://github.com/espressif/esp-idf.git
synced 2024-09-20 00:36:01 -04:00
3f1c5c4d5b
2. add PIN_FUNC_GPIO in io_mux_reg.h, put the io_mux_regs in order 3. use braces around single line if statements in ledc.c and gpio.c
386 lines
14 KiB
C
386 lines
14 KiB
C
// 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;
|
|
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 || 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], 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);
|
|
/*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 << 8) / freq_hz / precision; //8bit fragment
|
|
/*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*/
|
|
div_param = ((uint64_t) LEDC_REF_CLK_HZ << 8) / 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;
|
|
}
|
|
timer_clk_src = LEDC_REF_TICK;
|
|
ledc_timer_config(speed_mode, timer_select, div_param, duty_depth, timer_clk_src);
|
|
ledc_set_channel_timer(speed_mode, ledc_channel, timer_select);
|
|
} else { //APB TICK
|
|
timer_clk_src = LEDC_APB_CLK;
|
|
ledc_timer_config(speed_mode, timer_select, div_param, duty_depth, timer_clk_src);
|
|
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_clk_src, 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 > LEDC_DUTY_NUM_HSCH0_V || duty_cyle_num > LEDC_DUTY_CYCLE_HSCH0_V || duty_scale > LEDC_DUTY_SCALE_HSCH0_V) {
|
|
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;
|
|
}
|
|
|
|
int ledc_get_duty(ledc_mode_t speed_mode, ledc_channel_t channel)
|
|
{
|
|
if(!ledc_is_valid_mode(speed_mode)) {
|
|
return -1;
|
|
}
|
|
uint32_t 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 << 8) / freq_hz / precision;
|
|
} else {
|
|
div_num = ((uint64_t) LEDC_REF_CLK_HZ << 8) / 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 0;
|
|
}
|
|
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 << 8) / precision / div_num;
|
|
} else {
|
|
freq = ((uint64_t) LEDC_REF_CLK_HZ << 8) / precision / div_num;
|
|
}
|
|
portEXIT_CRITICAL(&ledc_spinlock);
|
|
return freq;
|
|
}
|