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Owen Bryan
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Blink/blink/managed_components/espressif__led_strip/examples/led_strip_rmt_ws2812/CMakeLists.txt Normal file
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# For more information about build system see
# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
# The following five 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)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(led_strip_rmt_ws2812)

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Blink/blink/managed_components/espressif__led_strip/examples/led_strip_rmt_ws2812/README.md Normal file
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# LED Strip Example (RMT backend + WS2812)
This example demonstrates how to blink the WS2812 LED using the [led_strip](https://components.espressif.com/component/espressif/led_strip) component.
## How to Use Example
### Hardware Required
* A development board with Espressif SoC
* A USB cable for Power supply and programming
* WS2812 LED strip
### Configure the Example
Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`. Then assign the proper GPIO in the [source file](main/led_strip_rmt_ws2812_main.c). If your led strip has multiple LEDs, don't forget update the number.
### Build and Flash
Run `idf.py -p PORT build flash monitor` to build, flash and monitor the project.
(To exit the serial monitor, type ``Ctrl-]``.)
See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
## Example Output
```text
I (299) gpio: GPIO[8]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (309) example: Created LED strip object with RMT backend
I (309) example: Start blinking LED strip
```

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idf_component_register(SRCS "led_strip_rmt_ws2812_main.c"
INCLUDE_DIRS ".")

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Blink/blink/managed_components/espressif__led_strip/examples/led_strip_rmt_ws2812/main/idf_component.yml Normal file
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## IDF Component Manager Manifest File
dependencies:
espressif/led_strip:
version: '^2'
override_path: '../../../'

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Blink/blink/managed_components/espressif__led_strip/examples/led_strip_rmt_ws2812/main/led_strip_rmt_ws2812_main.c Normal file
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/*
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "led_strip.h"
#include "esp_log.h"
#include "esp_err.h"
// GPIO assignment
#define LED_STRIP_BLINK_GPIO 2
// Numbers of the LED in the strip
#define LED_STRIP_LED_NUMBERS 24
// 10MHz resolution, 1 tick = 0.1us (led strip needs a high resolution)
#define LED_STRIP_RMT_RES_HZ (10 * 1000 * 1000)
static const char *TAG = "example";
led_strip_handle_t configure_led(void)
{
// LED strip general initialization, according to your led board design
led_strip_config_t strip_config = {
.strip_gpio_num = LED_STRIP_BLINK_GPIO, // The GPIO that connected to the LED strip's data line
.max_leds = LED_STRIP_LED_NUMBERS, // The number of LEDs in the strip,
.led_pixel_format = LED_PIXEL_FORMAT_GRB, // Pixel format of your LED strip
.led_model = LED_MODEL_WS2812, // LED strip model
.flags.invert_out = false, // whether to invert the output signal
};
// LED strip backend configuration: RMT
led_strip_rmt_config_t rmt_config = {
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
.rmt_channel = 0,
#else
.clk_src = RMT_CLK_SRC_DEFAULT, // different clock source can lead to different power consumption
.resolution_hz = LED_STRIP_RMT_RES_HZ, // RMT counter clock frequency
.flags.with_dma = false, // DMA feature is available on ESP target like ESP32-S3
#endif
};
// LED Strip object handle
led_strip_handle_t led_strip;
ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &rmt_config, &led_strip));
ESP_LOGI(TAG, "Created LED strip object with RMT backend");
return led_strip;
}
void app_main(void)
{
led_strip_handle_t led_strip = configure_led();
bool led_on_off = false;
ESP_LOGI(TAG, "Start blinking LED strip");
while (1) {
if (led_on_off) {
/* Set the LED pixel using RGB from 0 (0%) to 255 (100%) for each color */
for (int i = 0; i < LED_STRIP_LED_NUMBERS; i++) {
ESP_ERROR_CHECK(led_strip_set_pixel(led_strip, i, 5, 5, 5));
}
/* Refresh the strip to send data */
ESP_ERROR_CHECK(led_strip_refresh(led_strip));
ESP_LOGI(TAG, "LED ON!");
} else {
/* Set all LED off to clear all pixels */
ESP_ERROR_CHECK(led_strip_clear(led_strip));
ESP_LOGI(TAG, "LED OFF!");
}
led_on_off = !led_on_off;
vTaskDelay(pdMS_TO_TICKS(500));
}
}

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Blink/blink/managed_components/espressif__led_strip/examples/led_strip_spi_ws2812/CMakeLists.txt Normal file
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# For more information about build system see
# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
# The following five 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)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(led_strip_spi_ws2812)

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Blink/blink/managed_components/espressif__led_strip/examples/led_strip_spi_ws2812/README.md Normal file
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# LED Strip Example (SPI backend + WS2812)
This example demonstrates how to blink the WS2812 LED using the [led_strip](https://components.espressif.com/component/espressif/led_strip) component.
## How to Use Example
### Hardware Required
* A development board with Espressif SoC
* A USB cable for Power supply and programming
* WS2812 LED strip
### Configure the Example
Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`. Then assign the proper GPIO in the [source file](main/led_strip_spi_ws2812_main.c). If your led strip has multiple LEDs, don't forget update the number.
### Build and Flash
Run `idf.py -p PORT build flash monitor` to build, flash and monitor the project.
(To exit the serial monitor, type ``Ctrl-]``.)
See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
## Example Output
```text
I (299) gpio: GPIO[14]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (309) example: Created LED strip object with SPI backend
I (309) example: Start blinking LED strip
```

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idf_component_register(SRCS "led_strip_spi_ws2812_main.c"
INCLUDE_DIRS ".")

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## IDF Component Manager Manifest File
dependencies:
espressif/led_strip:
version: '^2.4'
override_path: '../../../'
idf: ">=5.1"

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/*
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "led_strip.h"
#include "esp_log.h"
#include "esp_err.h"
// GPIO assignment
#define LED_STRIP_BLINK_GPIO 2
// Numbers of the LED in the strip
#define LED_STRIP_LED_NUMBERS 24
static const char *TAG = "example";
led_strip_handle_t configure_led(void)
{
// LED strip general initialization, according to your led board design
led_strip_config_t strip_config = {
.strip_gpio_num = LED_STRIP_BLINK_GPIO, // The GPIO that connected to the LED strip's data line
.max_leds = LED_STRIP_LED_NUMBERS, // The number of LEDs in the strip,
.led_pixel_format = LED_PIXEL_FORMAT_GRB, // Pixel format of your LED strip
.led_model = LED_MODEL_WS2812, // LED strip model
.flags.invert_out = false, // whether to invert the output signal
};
// LED strip backend configuration: SPI
led_strip_spi_config_t spi_config = {
.clk_src = SPI_CLK_SRC_DEFAULT, // different clock source can lead to different power consumption
.flags.with_dma = true, // Using DMA can improve performance and help drive more LEDs
.spi_bus = SPI2_HOST, // SPI bus ID
};
// LED Strip object handle
led_strip_handle_t led_strip;
ESP_ERROR_CHECK(led_strip_new_spi_device(&strip_config, &spi_config, &led_strip));
ESP_LOGI(TAG, "Created LED strip object with SPI backend");
return led_strip;
}
void app_main(void)
{
led_strip_handle_t led_strip = configure_led();
bool led_on_off = false;
ESP_LOGI(TAG, "Start blinking LED strip");
while (1) {
if (led_on_off) {
/* Set the LED pixel using RGB from 0 (0%) to 255 (100%) for each color */
for (int i = 0; i < LED_STRIP_LED_NUMBERS; i++) {
ESP_ERROR_CHECK(led_strip_set_pixel(led_strip, i, 5, 5, 5));
}
/* Refresh the strip to send data */
ESP_ERROR_CHECK(led_strip_refresh(led_strip));
ESP_LOGI(TAG, "LED ON!");
} else {
/* Set all LED off to clear all pixels */
ESP_ERROR_CHECK(led_strip_clear(led_strip));
ESP_LOGI(TAG, "LED OFF!");
}
led_on_off = !led_on_off;
vTaskDelay(pdMS_TO_TICKS(500));
}
}