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led_strip: use component manager in the example

pull/9565/head
morris 2022-08-11 14:54:50 +08:00
rodzic 2761ad4865
commit dfafa619c7
15 zmienionych plików z 16 dodań i 515 usunięć
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9
examples/common_components/led_strip/CMakeLists.txt
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set(srcs "src/led_strip_api.c")
if(CONFIG_SOC_RMT_SUPPORTED)
list(APPEND srcs "src/led_strip_rmt_dev.c" "src/led_strip_rmt_encoder.c")
endif()
idf_component_register(SRCS ${srcs}
INCLUDE_DIRS "include" "interface"
PRIV_REQUIRES "driver")

15
examples/common_components/led_strip/README.md
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# LED Strip Component
This directory contains an implementation for addressable LEDs by different peripherals. Currently only RMT is supported as the led strip backend.
It's compatible with:
* [WS2812](http://www.world-semi.com/Certifications/WS2812B.html)
* SK68XX
This component is used as part of the following ESP-IDF examples:
- [Blink Example](../../get-started/blink).
To learn more about how to use this component, please check API Documentation from header file [led_strip.h](./include/led_strip.h).
Please note that this component is not considered to be a part of ESP-IDF stable API. It may change and it may be removed in the future releases.

95
examples/common_components/led_strip/include/led_strip.h
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/*
* SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdint.h>
#include "esp_err.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief LED strip handle
*/
typedef struct led_strip_t *led_strip_handle_t;
/**
* @brief Set RGB for a specific pixel
*
* @param strip: LED strip
* @param index: index of pixel to set
* @param red: red part of color
* @param green: green part of color
* @param blue: blue part of color
*
* @return
* - ESP_OK: Set RGB for a specific pixel successfully
* - ESP_ERR_INVALID_ARG: Set RGB for a specific pixel failed because of invalid parameters
* - ESP_FAIL: Set RGB for a specific pixel failed because other error occurred
*/
esp_err_t led_strip_set_pixel(led_strip_handle_t strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue);
/**
* @brief Refresh memory colors to LEDs
*
* @param strip: LED strip
*
* @return
* - ESP_OK: Refresh successfully
* - ESP_FAIL: Refresh failed because some other error occurred
*
* @note:
* After updating the LED colors in the memory, a following invocation of this API is needed to flush colors to strip.
*/
esp_err_t led_strip_refresh(led_strip_handle_t strip);
/**
* @brief Clear LED strip (turn off all LEDs)
*
* @param strip: LED strip
*
* @return
* - ESP_OK: Clear LEDs successfully
* - ESP_FAIL: Clear LEDs failed because some other error occurred
*/
esp_err_t led_strip_clear(led_strip_handle_t strip);
/**
* @brief Free LED strip resources
*
* @param strip: LED strip
*
* @return
* - ESP_OK: Free resources successfully
* - ESP_FAIL: Free resources failed because error occurred
*/
esp_err_t led_strip_del(led_strip_handle_t strip);
/**
* @brief LED Strip Configuration
*/
typedef struct {
uint32_t strip_gpio_num; /*!< GPIO number that used by LED strip */
uint32_t max_leds; /*!< Maximum LEDs in a single strip */
} led_strip_config_t;
/**
* @brief Create LED strip based on RMT TX channel
*
* @param config LED strip specific configuration
* @param ret_strip Returned LED strip handle
* @return
* - ESP_OK: create LED strip handle successfully
* - ESP_ERR_INVALID_ARG: create LED strip handle failed because of invalid argument
* - ESP_ERR_NO_MEM: create LED strip handle failed because of out of memory
* - ESP_FAIL: create LED strip handle failed because some other error
*/
esp_err_t led_strip_new_rmt_device(const led_strip_config_t *config, led_strip_handle_t *ret_strip);
#ifdef __cplusplus
}
#endif

78
examples/common_components/led_strip/interface/led_strip_interface.h
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/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdint.h>
#include "esp_err.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct led_strip_t led_strip_t; /*!< Type of LED strip */
/**
* @brief LED strip interface definition
*/
struct led_strip_t {
/**
* @brief Set RGB for a specific pixel
*
* @param strip: LED strip
* @param index: index of pixel to set
* @param red: red part of color
* @param green: green part of color
* @param blue: blue part of color
*
* @return
* - ESP_OK: Set RGB for a specific pixel successfully
* - ESP_ERR_INVALID_ARG: Set RGB for a specific pixel failed because of invalid parameters
* - ESP_FAIL: Set RGB for a specific pixel failed because other error occurred
*/
esp_err_t (*set_pixel)(led_strip_t *strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue);
/**
* @brief Refresh memory colors to LEDs
*
* @param strip: LED strip
* @param timeout_ms: timeout value for refreshing task
*
* @return
* - ESP_OK: Refresh successfully
* - ESP_FAIL: Refresh failed because some other error occurred
*
* @note:
* After updating the LED colors in the memory, a following invocation of this API is needed to flush colors to strip.
*/
esp_err_t (*refresh)(led_strip_t *strip);
/**
* @brief Clear LED strip (turn off all LEDs)
*
* @param strip: LED strip
* @param timeout_ms: timeout value for clearing task
*
* @return
* - ESP_OK: Clear LEDs successfully
* - ESP_FAIL: Clear LEDs failed because some other error occurred
*/
esp_err_t (*clear)(led_strip_t *strip);
/**
* @brief Free LED strip resources
*
* @param strip: LED strip
*
* @return
* - ESP_OK: Free resources successfully
* - ESP_FAIL: Free resources failed because error occurred
*/
esp_err_t (*del)(led_strip_t *strip);
};
#ifdef __cplusplus
}
#endif

35
examples/common_components/led_strip/src/led_strip_api.c
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/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "esp_log.h"
#include "esp_check.h"
#include "led_strip.h"
#include "led_strip_interface.h"
static const char *TAG = "led_strip";
esp_err_t led_strip_set_pixel(led_strip_handle_t strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue)
{
ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
return strip->set_pixel(strip, index, red, green, blue);
}
esp_err_t led_strip_refresh(led_strip_handle_t strip)
{
ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
return strip->refresh(strip);
}
esp_err_t led_strip_clear(led_strip_handle_t strip)
{
ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
return strip->clear(strip);
}
esp_err_t led_strip_del(led_strip_handle_t strip)
{
ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
return strip->del(strip);
}

112
examples/common_components/led_strip/src/led_strip_rmt_dev.c
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/*
* SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdlib.h>
#include <string.h>
#include <sys/cdefs.h>
#include "esp_log.h"
#include "esp_check.h"
#include "driver/rmt_tx.h"
#include "led_strip.h"
#include "led_strip_interface.h"
#include "led_strip_rmt_encoder.h"
#define LED_SRIP_RMT_RESOLUTION 10000000 // 10MHz resolution
static const char *TAG = "led_strip_rmt";
typedef struct {
led_strip_t base;
rmt_channel_handle_t rmt_chan;
rmt_encoder_handle_t strip_encoder;
uint32_t strip_len;
uint8_t pixel_buf[];
} led_strip_rmt_obj;
static esp_err_t led_strip_rmt_set_pixel(led_strip_t *strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue)
{
led_strip_rmt_obj *rmt_strip = __containerof(strip, led_strip_rmt_obj, base);
ESP_RETURN_ON_FALSE(index < rmt_strip->strip_len, ESP_ERR_INVALID_ARG, TAG, "index out of maximum number of LEDs");
uint32_t start = index * 3;
// In thr order of GRB, as LED strip like WS2812 sends out pixels in this order
rmt_strip->pixel_buf[start + 0] = green & 0xFF;
rmt_strip->pixel_buf[start + 1] = red & 0xFF;
rmt_strip->pixel_buf[start + 2] = blue & 0xFF;
return ESP_OK;
}
static esp_err_t led_strip_rmt_refresh(led_strip_t *strip)
{
led_strip_rmt_obj *rmt_strip = __containerof(strip, led_strip_rmt_obj, base);
rmt_transmit_config_t tx_conf = {
.loop_count = 0,
};
ESP_RETURN_ON_ERROR(rmt_transmit(rmt_strip->rmt_chan, rmt_strip->strip_encoder, rmt_strip->pixel_buf,
rmt_strip->strip_len * 3, &tx_conf), TAG, "transmit pixels by RMT failed");
ESP_RETURN_ON_ERROR(rmt_tx_wait_all_done(rmt_strip->rmt_chan, -1), TAG, "flush RMT channel failed");
return ESP_OK;
}
static esp_err_t led_strip_rmt_clear(led_strip_t *strip)
{
led_strip_rmt_obj *rmt_strip = __containerof(strip, led_strip_rmt_obj, base);
// Write zero to turn off all leds
memset(rmt_strip->pixel_buf, 0, rmt_strip->strip_len * 3);
return led_strip_rmt_refresh(strip);
}
static esp_err_t led_strip_rmt_del(led_strip_t *strip)
{
led_strip_rmt_obj *rmt_strip = __containerof(strip, led_strip_rmt_obj, base);
ESP_RETURN_ON_ERROR(rmt_disable(rmt_strip->rmt_chan), TAG, "disable RMT channel failed");
ESP_RETURN_ON_ERROR(rmt_del_channel(rmt_strip->rmt_chan), TAG, "delete RMT channel failed");
ESP_RETURN_ON_ERROR(rmt_del_encoder(rmt_strip->strip_encoder), TAG, "delete strip encoder failed");
free(rmt_strip);
return ESP_OK;
}
esp_err_t led_strip_new_rmt_device(const led_strip_config_t *config, led_strip_handle_t *ret_strip)
{
led_strip_rmt_obj *rmt_strip = NULL;
esp_err_t ret = ESP_OK;
ESP_GOTO_ON_FALSE(config && ret_strip, ESP_ERR_INVALID_ARG, err, TAG, "invalid argument");
rmt_strip = calloc(1, sizeof(led_strip_rmt_obj) + config->max_leds * 3);
ESP_GOTO_ON_FALSE(rmt_strip, ESP_ERR_NO_MEM, err, TAG, "no mem for rmt strip");
rmt_tx_channel_config_t rmt_chan_config = {
.clk_src = RMT_CLK_SRC_DEFAULT,
.gpio_num = config->strip_gpio_num,
.mem_block_symbols = 64,
.resolution_hz = LED_SRIP_RMT_RESOLUTION,
.trans_queue_depth = 4,
};
ESP_GOTO_ON_ERROR(rmt_new_tx_channel(&rmt_chan_config, &rmt_strip->rmt_chan), err, TAG, "create RMT TX channel failed");
led_strip_encoder_config_t strip_encoder_conf = {
.resolution = LED_SRIP_RMT_RESOLUTION,
};
ESP_GOTO_ON_ERROR(rmt_new_led_strip_encoder(&strip_encoder_conf, &rmt_strip->strip_encoder), err, TAG, "create LED strip encoder failed");
ESP_GOTO_ON_ERROR(rmt_enable(rmt_strip->rmt_chan), err, TAG, "enable RMT channel failed");
rmt_strip->strip_len = config->max_leds;
rmt_strip->base.set_pixel = led_strip_rmt_set_pixel;
rmt_strip->base.refresh = led_strip_rmt_refresh;
rmt_strip->base.clear = led_strip_rmt_clear;
rmt_strip->base.del = led_strip_rmt_del;
*ret_strip = &rmt_strip->base;
return ESP_OK;
err:
if (rmt_strip) {
if (rmt_strip->rmt_chan) {
rmt_del_channel(rmt_strip->rmt_chan);
}
if (rmt_strip->strip_encoder) {
rmt_del_encoder(rmt_strip->strip_encoder);
}
free(rmt_strip);
}
return ret;
}

124
examples/common_components/led_strip/src/led_strip_rmt_encoder.c
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/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "esp_check.h"
#include "led_strip_rmt_encoder.h"
static const char *TAG = "led_encoder";
typedef struct {
rmt_encoder_t base;
rmt_encoder_t *bytes_encoder;
rmt_encoder_t *copy_encoder;
int state;
rmt_symbol_word_t reset_code;
} rmt_led_strip_encoder_t;
static size_t rmt_encode_led_strip(rmt_encoder_t *encoder, rmt_channel_handle_t channel, const void *primary_data, size_t data_size, rmt_encode_state_t *ret_state)
{
rmt_led_strip_encoder_t *led_encoder = __containerof(encoder, rmt_led_strip_encoder_t, base);
rmt_encoder_handle_t bytes_encoder = led_encoder->bytes_encoder;
rmt_encoder_handle_t copy_encoder = led_encoder->copy_encoder;
rmt_encode_state_t session_state = 0;
rmt_encode_state_t state = 0;
size_t encoded_symbols = 0;
switch (led_encoder->state) {
case 0: // send RGB data
encoded_symbols += bytes_encoder->encode(bytes_encoder, channel, primary_data, data_size, &session_state);
if (session_state & RMT_ENCODING_COMPLETE) {
led_encoder->state = 1; // switch to next state when current encoding session finished
}
if (session_state & RMT_ENCODING_MEM_FULL) {
state |= RMT_ENCODING_MEM_FULL;
goto out; // yield if there's no free space for encoding artifacts
}
// fall-through
case 1: // send reset code
encoded_symbols += copy_encoder->encode(copy_encoder, channel, &led_encoder->reset_code,
sizeof(led_encoder->reset_code), &session_state);
if (session_state & RMT_ENCODING_COMPLETE) {
led_encoder->state = 0; // back to the initial encoding session
state |= RMT_ENCODING_COMPLETE;
}
if (session_state & RMT_ENCODING_MEM_FULL) {
state |= RMT_ENCODING_MEM_FULL;
goto out; // yield if there's no free space for encoding artifacts
}
}
out:
*ret_state = state;
return encoded_symbols;
}
static esp_err_t rmt_del_led_strip_encoder(rmt_encoder_t *encoder)
{
rmt_led_strip_encoder_t *led_encoder = __containerof(encoder, rmt_led_strip_encoder_t, base);
rmt_del_encoder(led_encoder->bytes_encoder);
rmt_del_encoder(led_encoder->copy_encoder);
free(led_encoder);
return ESP_OK;
}
static esp_err_t rmt_led_strip_encoder_reset(rmt_encoder_t *encoder)
{
rmt_led_strip_encoder_t *led_encoder = __containerof(encoder, rmt_led_strip_encoder_t, base);
rmt_encoder_reset(led_encoder->bytes_encoder);
rmt_encoder_reset(led_encoder->copy_encoder);
led_encoder->state = 0;
return ESP_OK;
}
esp_err_t rmt_new_led_strip_encoder(const led_strip_encoder_config_t *config, rmt_encoder_handle_t *ret_encoder)
{
esp_err_t ret = ESP_OK;
rmt_led_strip_encoder_t *led_encoder = NULL;
ESP_GOTO_ON_FALSE(config && ret_encoder, ESP_ERR_INVALID_ARG, err, TAG, "invalid argument");
led_encoder = calloc(1, sizeof(rmt_led_strip_encoder_t));
ESP_GOTO_ON_FALSE(led_encoder, ESP_ERR_NO_MEM, err, TAG, "no mem for led strip encoder");
led_encoder->base.encode = rmt_encode_led_strip;
led_encoder->base.del = rmt_del_led_strip_encoder;
led_encoder->base.reset = rmt_led_strip_encoder_reset;
// different led strip might have its own timing requirements, following parameter is for WS2812
rmt_bytes_encoder_config_t bytes_encoder_config = {
.bit0 = {
.level0 = 1,
.duration0 = 0.3 * config->resolution / 1000000, // T0H=0.3us
.level1 = 0,
.duration1 = 0.9 * config->resolution / 1000000, // T0L=0.9us
},
.bit1 = {
.level0 = 1,
.duration0 = 0.9 * config->resolution / 1000000, // T1H=0.9us
.level1 = 0,
.duration1 = 0.3 * config->resolution / 1000000, // T1L=0.3us
},
.flags.msb_first = 1 // WS2812 transfer bit order: G7...G0R7...R0B7...B0
};
ESP_GOTO_ON_ERROR(rmt_new_bytes_encoder(&bytes_encoder_config, &led_encoder->bytes_encoder), err, TAG, "create bytes encoder failed");
rmt_copy_encoder_config_t copy_encoder_config = {};
ESP_GOTO_ON_ERROR(rmt_new_copy_encoder(&copy_encoder_config, &led_encoder->copy_encoder), err, TAG, "create copy encoder failed");
uint32_t reset_ticks = config->resolution / 1000000 * 50 / 2; // reset code duration defaults to 50us
led_encoder->reset_code = (rmt_symbol_word_t) {
.level0 = 0,
.duration0 = reset_ticks,
.level1 = 0,
.duration1 = reset_ticks,
};
*ret_encoder = &led_encoder->base;
return ESP_OK;
err:
if (led_encoder) {
if (led_encoder->bytes_encoder) {
rmt_del_encoder(led_encoder->bytes_encoder);
}
if (led_encoder->copy_encoder) {
rmt_del_encoder(led_encoder->copy_encoder);
}
free(led_encoder);
}
return ret;
}

36
examples/common_components/led_strip/src/led_strip_rmt_encoder.h
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/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdint.h>
#include "driver/rmt_encoder.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Type of led strip encoder configuration
*/
typedef struct {
uint32_t resolution; /*!< Encoder resolution, in Hz */
} led_strip_encoder_config_t;
/**
* @brief Create RMT encoder for encoding LED strip pixels into RMT symbols
*
* @param[in] config Encoder configuration
* @param[out] ret_encoder Returned encoder handle
* @return
* - ESP_ERR_INVALID_ARG for any invalid arguments
* - ESP_ERR_NO_MEM out of memory when creating led strip encoder
* - ESP_OK if creating encoder successfully
*/
esp_err_t rmt_new_led_strip_encoder(const led_strip_encoder_config_t *config, rmt_encoder_handle_t *ret_encoder);
#ifdef __cplusplus
}
#endif

2
examples/get-started/blink/CMakeLists.txt
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@ -2,7 +2,5 @@
# CMakeLists in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
set(EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/examples/common_components/led_strip)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(blink)

8
examples/get-started/blink/README.md
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@ -5,9 +5,9 @@
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example demonstrates how to blink a LED using GPIO or RMT for the addressable LED, i.e. [WS2812](http://www.world-semi.com/Certifications/WS2812B.html).
This example demonstrates how to blink a LED using GPIO or using the [led_strip](https://components.espressif.com/component/espressif/led_strip) component for the addressable LED, i.e. [WS2812](http://www.world-semi.com/Certifications/WS2812B.html).
See the RMT examples in the [RMT Peripheral](../../peripherals/rmt) for more information about how to use it.
The `led_strip` is installed via [component manager](main/idf_component.yml).
## How to Use Example
@ -37,7 +37,7 @@ Open the project configuration menu (`idf.py menuconfig`).
In the `Example Configuration` menu:
* Select the LED type in the `Blink LED type` option.
* Use `GPIO` for regular LED blink.
* Use `GPIO` for regular LED blink.
* Set the GPIO number used for the signal in the `Blink GPIO number` option.
* Set the blinking period in the `Blink period in ms` option.
@ -53,7 +53,7 @@ See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/l
As you run the example, you will see the LED blinking, according to the previously defined period. For the addressable LED, you can also change the LED color by setting the `led_strip_set_pixel(led_strip, 0, 16, 16, 16);` (LED Strip, Pixel Number, Red, Green, Blue) with values from 0 to 255 in the [source file](main/blink_example_main.c).
```
```text
I (315) example: Example configured to blink addressable LED!
I (325) example: Turning the LED OFF!
I (1325) example: Turning the LED ON!

5
examples/get-started/blink/main/blink_example_main.c
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@ -49,7 +49,10 @@ static void configure_led(void)
.strip_gpio_num = BLINK_GPIO,
.max_leds = 1, // at least one LED on board
};
ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &led_strip));
led_strip_rmt_config_t rmt_config = {
.resolution_hz = 10 * 1000 * 1000, // 10MHz
};
ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &rmt_config, &led_strip));
/* Set all LED off to clear all pixels */
led_strip_clear(led_strip);
}

2
examples/get-started/blink/main/idf_component.yml 100644
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@ -0,0 +1,2 @@
dependencies:
espressif/led_strip: "^2.0.0"

4
examples/zigbee/light_sample/light_bulb/CMakeLists.txt
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@ -1,8 +1,6 @@
# The following lines of boilerplate have to be in your project's CMakeLists
# in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)
set(EXTRA_COMPONENT_DIRS
$ENV{IDF_PATH}/examples/common_components/led_strip
)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(light_bulb)

1
examples/zigbee/light_sample/light_bulb/main/idf_component.yml
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@ -1,6 +1,7 @@
## IDF Component Manager Manifest File
dependencies:
espressif/esp-zboss-lib: "~0.0.4"
espressif/led_strip: "~2.0.0"
## Required IDF version
idf:
version: ">=5.0.0"

5
examples/zigbee/light_sample/light_bulb/main/light_driver.c
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@ -53,6 +53,9 @@ void light_driver_init(bool power)
.max_leds = CONFIG_EXAMPLE_STRIP_LED_NUMBER,
.strip_gpio_num = CONFIG_EXAMPLE_STRIP_LED_GPIO,
};
ESP_ERROR_CHECK(led_strip_new_rmt_device(&led_strip_conf, &s_led_strip));
led_strip_rmt_config_t rmt_conf = {
.resolution_hz = 10 * 1000 * 1000, // 10MHz
};
ESP_ERROR_CHECK(led_strip_new_rmt_device(&led_strip_conf, &rmt_conf, &s_led_strip));
light_driver_set_power(power);
}