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添加智能灯固件代码
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kerwincui
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# The following lines of boilerplate have to be in your project's CMakeLists
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# in this exact order for cmake to work correctly
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cmake_minimum_required(VERSION 3.5)
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include($ENV{IDF_PATH}/tools/cmake/project.cmake)
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project(ledc)
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#
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# This is a project Makefile. It is assumed the directory this Makefile resides in is a
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# project subdirectory.
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#
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PROJECT_NAME := ledc
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include $(IDF_PATH)/make/project.mk
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# _LEDC Example_
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(See the README.md file in the upper level 'examples' directory for more information about examples.)
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This example shows how to control intensity of LEDs using ESP32's on-board hardware LED PWM Controller module.
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## How to use example
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### Hardware Required
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* A development board with ESP32 SoC (e.g., ESP32-DevKitC, ESP-WROVER-KIT, etc.)
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* A USB cable for power supply and programming
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Connect four LEDs to the following LEDC channels / individual GPIOs:
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|ledc channel|GPIO|
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|:---:|:---:|
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|channel 0|GPIO18|
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|channel 1|GPIO19|
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|channel 2|GPIO4|
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|channel 3|GPIO5|
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### Configure the project
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```
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idf.py menuconfig
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```
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### Build and Flash
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Build the project and flash it to the board, then run monitor tool to view serial output:
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```
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idf.py -p PORT flash monitor
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```
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
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## Example Output
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Running this example, you will see each ledc's brightness changes differently
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* LEDC 1: Fade up / increase intensity
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* LEDC 2: Fade down / decrease intensity
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* LEDC 3: Keep a stable intensity
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* LEDC 4: LED is not on
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you can also see the following output log on the serial monitor:
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```
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1. LEDC fade up to duty = 4000
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2. LEDC fade down to duty = 0
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3. LEDC set duty = 4000 without fade
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4. LEDC set duty = 0 without fade
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...
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```
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## Troubleshooting
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* Programming fail
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* Hardware connection is not correct: run `idf.py -p PORT monitor`, and reboot your board to see if there are any output logs.
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* The baud rate for downloading is too high: lower your baud rate in the `menuconfig` menu, and try again.
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For any technical queries, please open an [issue] (https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you soon.
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idf_component_register(SRCS "ledc_example_main.c"
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INCLUDE_DIRS ".")
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#
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# Main Makefile. This is basically the same as a component makefile.
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#
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/* LEDC (LED Controller) fade example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <stdio.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/ledc.h"
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#include "esp_err.h"
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/*
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* About this example
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*
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* 1. Start with initializing LEDC module:
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* a. Set the timer of LEDC first, this determines the frequency
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* and resolution of PWM.
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* b. Then set the LEDC channel you want to use,
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* and bind with one of the timers.
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*
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* 2. You need first to install a default fade function,
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* then you can use fade APIs.
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*
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* 3. You can also set a target duty directly without fading.
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*
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* 4. This example uses GPIO18/19/4/5 as LEDC output,
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* and it will change the duty repeatedly.
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*
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* 5. GPIO18/19 are from high speed channel group.
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* GPIO4/5 are from low speed channel group.
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*
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*/
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#ifdef CONFIG_IDF_TARGET_ESP32
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#define LEDC_HS_TIMER LEDC_TIMER_0
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#define LEDC_HS_MODE LEDC_HIGH_SPEED_MODE
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#define LEDC_HS_CH0_GPIO (18)
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#define LEDC_HS_CH0_CHANNEL LEDC_CHANNEL_0
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#define LEDC_HS_CH1_GPIO (19)
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#define LEDC_HS_CH1_CHANNEL LEDC_CHANNEL_1
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#endif
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#define LEDC_LS_TIMER LEDC_TIMER_1
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#define LEDC_LS_MODE LEDC_LOW_SPEED_MODE
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#ifdef CONFIG_IDF_TARGET_ESP32S2
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#define LEDC_LS_CH0_GPIO (18)
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#define LEDC_LS_CH0_CHANNEL LEDC_CHANNEL_0
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#define LEDC_LS_CH1_GPIO (19)
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#define LEDC_LS_CH1_CHANNEL LEDC_CHANNEL_1
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#endif
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#define LEDC_LS_CH2_GPIO (4)
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#define LEDC_LS_CH2_CHANNEL LEDC_CHANNEL_2
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#define LEDC_LS_CH3_GPIO (5)
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#define LEDC_LS_CH3_CHANNEL LEDC_CHANNEL_3
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#define LEDC_TEST_CH_NUM (4)
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#define LEDC_TEST_DUTY (4000)
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#define LEDC_TEST_FADE_TIME (3000)
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void app_main(void)
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{
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int ch;
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/*
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* Prepare and set configuration of timers
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* that will be used by LED Controller
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*/
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ledc_timer_config_t ledc_timer = {
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.duty_resolution = LEDC_TIMER_13_BIT, // resolution of PWM duty
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.freq_hz = 5000, // frequency of PWM signal
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.speed_mode = LEDC_LS_MODE, // timer mode
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.timer_num = LEDC_LS_TIMER, // timer index
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.clk_cfg = LEDC_AUTO_CLK, // Auto select the source clock
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};
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// Set configuration of timer0 for high speed channels
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ledc_timer_config(&ledc_timer);
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#ifdef CONFIG_IDF_TARGET_ESP32
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// Prepare and set configuration of timer1 for low speed channels
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ledc_timer.speed_mode = LEDC_HS_MODE;
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ledc_timer.timer_num = LEDC_HS_TIMER;
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ledc_timer_config(&ledc_timer);
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#endif
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/*
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* Prepare individual configuration
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* for each channel of LED Controller
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* by selecting:
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* - controller's channel number
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* - output duty cycle, set initially to 0
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* - GPIO number where LED is connected to
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* - speed mode, either high or low
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* - timer servicing selected channel
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* Note: if different channels use one timer,
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* then frequency and bit_num of these channels
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* will be the same
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*/
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ledc_channel_config_t ledc_channel[LEDC_TEST_CH_NUM] = {
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#ifdef CONFIG_IDF_TARGET_ESP32
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{
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.channel = LEDC_HS_CH0_CHANNEL,
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.duty = 0,
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.gpio_num = LEDC_HS_CH0_GPIO,
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.speed_mode = LEDC_HS_MODE,
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.hpoint = 0,
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.timer_sel = LEDC_HS_TIMER
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},
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{
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.channel = LEDC_HS_CH1_CHANNEL,
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.duty = 0,
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.gpio_num = LEDC_HS_CH1_GPIO,
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.speed_mode = LEDC_HS_MODE,
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.hpoint = 0,
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.timer_sel = LEDC_HS_TIMER
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},
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#elif defined CONFIG_IDF_TARGET_ESP32S2
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{
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.channel = LEDC_LS_CH0_CHANNEL,
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.duty = 0,
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.gpio_num = LEDC_LS_CH0_GPIO,
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.speed_mode = LEDC_LS_MODE,
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.hpoint = 0,
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.timer_sel = LEDC_LS_TIMER
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},
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{
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.channel = LEDC_LS_CH1_CHANNEL,
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.duty = 0,
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.gpio_num = LEDC_LS_CH1_GPIO,
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.speed_mode = LEDC_LS_MODE,
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.hpoint = 0,
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.timer_sel = LEDC_LS_TIMER
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},
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#endif
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{
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.channel = LEDC_LS_CH2_CHANNEL,
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.duty = 0,
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.gpio_num = LEDC_LS_CH2_GPIO,
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.speed_mode = LEDC_LS_MODE,
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.hpoint = 0,
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.timer_sel = LEDC_LS_TIMER
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},
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{
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.channel = LEDC_LS_CH3_CHANNEL,
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.duty = 0,
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.gpio_num = LEDC_LS_CH3_GPIO,
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.speed_mode = LEDC_LS_MODE,
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.hpoint = 0,
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.timer_sel = LEDC_LS_TIMER
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},
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};
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// Set LED Controller with previously prepared configuration
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for (ch = 0; ch < LEDC_TEST_CH_NUM; ch++) {
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ledc_channel_config(&ledc_channel[ch]);
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}
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// Initialize fade service.
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ledc_fade_func_install(0);
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while (1) {
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printf("1. LEDC fade up to duty = %d\n", LEDC_TEST_DUTY);
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for (ch = 0; ch < LEDC_TEST_CH_NUM; ch++) {
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ledc_set_fade_with_time(ledc_channel[ch].speed_mode,
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ledc_channel[ch].channel, LEDC_TEST_DUTY, LEDC_TEST_FADE_TIME);
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ledc_fade_start(ledc_channel[ch].speed_mode,
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ledc_channel[ch].channel, LEDC_FADE_NO_WAIT);
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}
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vTaskDelay(LEDC_TEST_FADE_TIME / portTICK_PERIOD_MS);
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printf("2. LEDC fade down to duty = 0\n");
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for (ch = 0; ch < LEDC_TEST_CH_NUM; ch++) {
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ledc_set_fade_with_time(ledc_channel[ch].speed_mode,
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ledc_channel[ch].channel, 0, LEDC_TEST_FADE_TIME);
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ledc_fade_start(ledc_channel[ch].speed_mode,
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ledc_channel[ch].channel, LEDC_FADE_NO_WAIT);
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}
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vTaskDelay(LEDC_TEST_FADE_TIME / portTICK_PERIOD_MS);
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printf("3. LEDC set duty = %d without fade\n", LEDC_TEST_DUTY);
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for (ch = 0; ch < LEDC_TEST_CH_NUM; ch++) {
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ledc_set_duty(ledc_channel[ch].speed_mode, ledc_channel[ch].channel, LEDC_TEST_DUTY);
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ledc_update_duty(ledc_channel[ch].speed_mode, ledc_channel[ch].channel);
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}
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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printf("4. LEDC set duty = 0 without fade\n");
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for (ch = 0; ch < LEDC_TEST_CH_NUM; ch++) {
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ledc_set_duty(ledc_channel[ch].speed_mode, ledc_channel[ch].channel, 0);
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ledc_update_duty(ledc_channel[ch].speed_mode, ledc_channel[ch].channel);
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}
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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}
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}
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