kopia lustrzana https://github.com/espressif/esp-idf
Get started example update for addressable LED compatibility.
Added the RMT/addr LED blink to the example and more detailed README.md Moved component/led_strip to common_components Added missing README file to common_components/led_strip README file update Makefile and Kconfig fixed for led_strip component Fixing end-of-line on main/blink.c Component updated to handle multiple instances Added note on the RMT channel number (ESP32 and ESP32-S2) Removed components folder from rmt/led_strip example and README updated Changed the led_strip_denit function and added ESP32-C3 RMT info on channel configuration Updates on README, Kconfig default settings and configure_led() function addedpull/6718/head
pedro.minatel
rodzic
2c0962f727
commit
cccdb3e4aa
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@ -0,0 +1,4 @@
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idf_component_register(SRCS "led_strip_rmt_ws2812.c"
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INCLUDE_DIRS "include"
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PRIV_REQUIRES "driver"
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)
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@ -0,0 +1,16 @@
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# LED Strip Component
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This directory contains an implementation for addressable LEDs using the RMT peripheral.
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It's compatible with:
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* [WS2812](http://www.world-semi.com/Certifications/WS2812B.html)
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* SK68XX
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This component is used as part of the following ESP-IDF examples:
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- [Blink Example](../../get-started/blink).
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- [LED Strip Example](../../peripherals/rmt/led_strip).
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To learn more about how to use this component, please check API Documentation from header file [led_strip.h](./include/led_strip.h).
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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.
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@ -121,6 +121,27 @@ typedef struct {
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*/
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led_strip_t *led_strip_new_rmt_ws2812(const led_strip_config_t *config);
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/**
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* @brief Init the RMT peripheral and LED strip configuration.
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*
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* @param[in] channel: RMT peripheral channel number.
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* @param[in] gpio: GPIO number for the RMT data output.
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* @param[in] led_num: number of addressable LEDs.
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* @return
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* LED strip instance or NULL
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*/
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led_strip_t * led_strip_init(uint8_t channel, uint8_t gpio, uint16_t led_num);
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/**
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* @brief Denit the RMT peripheral.
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*
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* @param[in] strip: LED strip
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* @return
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* - ESP_OK
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* - ESP_FAIL
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*/
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esp_err_t led_strip_denit(led_strip_t *strip);
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#ifdef __cplusplus
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}
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#endif
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@ -19,6 +19,8 @@
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#include "led_strip.h"
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#include "driver/rmt.h"
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#define RMT_TX_CHANNEL RMT_CHANNEL_0
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static const char *TAG = "ws2812";
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#define STRIP_CHECK(a, str, goto_tag, ret_value, ...) \
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do \
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@ -169,3 +171,37 @@ led_strip_t *led_strip_new_rmt_ws2812(const led_strip_config_t *config)
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err:
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return ret;
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}
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led_strip_t * led_strip_init(uint8_t channel, uint8_t gpio, uint16_t led_num)
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{
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static led_strip_t *pStrip;
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rmt_config_t config = RMT_DEFAULT_CONFIG_TX(gpio, channel);
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// set counter clock to 40MHz
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config.clk_div = 2;
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ESP_ERROR_CHECK(rmt_config(&config));
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ESP_ERROR_CHECK(rmt_driver_install(config.channel, 0, 0));
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// install ws2812 driver
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led_strip_config_t strip_config = LED_STRIP_DEFAULT_CONFIG(led_num, (led_strip_dev_t)config.channel);
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pStrip = led_strip_new_rmt_ws2812(&strip_config);
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if ( !pStrip ) {
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ESP_LOGE(TAG, "install WS2812 driver failed");
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return NULL;
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}
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// Clear LED strip (turn off all LEDs)
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ESP_ERROR_CHECK(pStrip->clear(pStrip, 100));
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return pStrip;
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}
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esp_err_t led_strip_denit(led_strip_t *strip)
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{
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ws2812_t *ws2812 = __containerof(strip, ws2812_t, parent);
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ESP_ERROR_CHECK(rmt_driver_uninstall(ws2812->rmt_channel));
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return strip->del(strip);
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}
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@ -2,5 +2,7 @@
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# CMakeLists in this exact order for cmake to work correctly
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cmake_minimum_required(VERSION 3.5)
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set(EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/examples/common_components/led_strip)
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include($ENV{IDF_PATH}/tools/cmake/project.cmake)
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project(blink)
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@ -5,4 +5,6 @@
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PROJECT_NAME := blink
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EXTRA_COMPONENT_DIRS = $(IDF_PATH)/examples/common_components/led_strip
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include $(IDF_PATH)/make/project.mk
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@ -1,5 +1,63 @@
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# Blink Example
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Starts a FreeRTOS task to blink an LED
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(See the README.md file in the upper level 'examples' directory for more information about examples.)
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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 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).
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See the RMT examples in the [RMT Peripheral](../../peripherals/rmt) for more information about how to use it.
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## How to Use Example
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Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`.
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### Hardware Required
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* A development board with ESP32/ESP32-S2/ESP32-C3 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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Some development boards use an addressable LED instead of a regular one. These development boards include:
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| Board | LED type | Pin |
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| -------------------- | -------------------- | -------------------- |
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| ESP32-C3-DevKitC-1 | Addressable | GPIO8 |
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| ESP32-C3-DevKitM-1 | Addressable | GPIO8 |
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| ESP32-S2-DevKitM-1 | Addressable | GPIO18 |
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| ESP32-S2-Saola-1 | Addressable | GPIO18 |
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See [Development Boards](https://www.espressif.com/en/products/devkits) for more information about it.
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### Configure the Project
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Open the project configuration menu (`idf.py menuconfig`).
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In the `Example Configuration` menu:
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* Select the LED type in the `Blink LED type` option.
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* * Use `GPIO` for regular LED blink.
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* * Use `RMT` for addressable LED blink.
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* * * Use `RMT Channel` to select the RMT peripheral channel.
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* Set the GPIO number used for the signal in the `Blink GPIO number` option.
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* Set the blinking period in the `Blink period in ms` option.
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### Build and Flash
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Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
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(To exit the serial monitor, type ``Ctrl-]``.)
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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.
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## Example Output
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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 `pStrip_a->set_pixel(pStrip_a, 0, 16, 16, 16);` (LED Strip, Pixel Number, Red, Green, Blue) with values from 0 to 255 in the `blink.c` file.
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Note: The color order could be different according to the LED model.
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The pixel number indicates the pixel position in the LED strip. For a single LED, use 0.
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## Troubleshooting
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* If the LED isn't blinking, check the GPIO or the LED type selection in the `Example Configuration` menu.
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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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@ -1,14 +1,46 @@
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menu "Example Configuration"
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choice BLINK_LED
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prompt "Blink LED type"
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default BLINK_LED_RMT if IDF_TARGET_ESP32C3
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default BLINK_LED_RMT if IDF_TARGET_ESP32S2
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default BLINK_LED_GPIO
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help
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Defines the default peripheral for blink example
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config BLINK_LED_GPIO
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bool "GPIO"
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config BLINK_LED_RMT
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bool "RMT - Addressable LED"
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endchoice
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config BLINK_LED_RMT_CHANNEL
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depends on BLINK_LED_RMT
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int "RMT Channel"
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range 0 7
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default 0
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help
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Set the RMT peripheral channel.
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ESP32 RMT channel from 0 to 7
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ESP32-S2 RMT channel from 0 to 3
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ESP32-C3 RMT channel from 0 to 1
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config BLINK_GPIO
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int "Blink GPIO number"
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range 0 34
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default 8 if IDF_TARGET_ESP32C3
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default 18 if IDF_TARGET_ESP32S2
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default 5
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help
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GPIO number (IOxx) to blink on and off.
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GPIO number (IOxx) to blink on and off or the RMT signal for the addressable LED.
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Some GPIOs are used for other purposes (flash connections, etc.) and cannot be used to blink.
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GPIOs 35-39 are input-only so cannot be used as outputs.
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config BLINK_PERIOD
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int "Blink period in ms"
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range 10 3600000
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default 1000
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help
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Define the blinking period in milliseconds.
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endmenu
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@ -10,32 +10,74 @@
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/gpio.h"
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#include "esp_log.h"
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#include "led_strip.h"
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#include "sdkconfig.h"
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/* Can use project configuration menu (idf.py menuconfig) to choose the GPIO to blink,
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static const char *TAG = "example";
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/* Use project configuration menu (idf.py menuconfig) to choose the GPIO to blink,
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or you can edit the following line and set a number here.
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*/
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#define BLINK_GPIO CONFIG_BLINK_GPIO
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void app_main(void)
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static uint8_t s_led_state = 0;
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#ifdef CONFIG_BLINK_LED_RMT
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static led_strip_t *pStrip_a;
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static void blink_led(void)
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{
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/* Configure the IOMUX register for pad BLINK_GPIO (some pads are
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muxed to GPIO on reset already, but some default to other
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functions and need to be switched to GPIO. Consult the
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Technical Reference for a list of pads and their default
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functions.)
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*/
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/* If the addressable LED is enabled */
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if (s_led_state) {
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/* Set the LED pixel using RGB from 0 (0%) to 255 (100%) for each color */
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pStrip_a->set_pixel(pStrip_a, 0, 16, 16, 16);
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/* Refresh the strip to send data */
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pStrip_a->refresh(pStrip_a, 100);
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} else {
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/* Set all LED off to clear all pixels */
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pStrip_a->clear(pStrip_a, 50);
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}
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}
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static void configure_led(void)
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{
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ESP_LOGI(TAG, "Example configured to blink addressable LED!");
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/* LED strip initialization with the GPIO and pixels number*/
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pStrip_a = led_strip_init(CONFIG_BLINK_LED_RMT_CHANNEL, BLINK_GPIO, 1);
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/* Set all LED off to clear all pixels */
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pStrip_a->clear(pStrip_a, 50);
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}
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#elif CONFIG_BLINK_LED_GPIO
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static void blink_led(void)
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{
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/* Set the GPIO level according to the state (LOW or HIGH)*/
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gpio_set_level(BLINK_GPIO, s_led_state);
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}
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static void configure_led(void)
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{
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ESP_LOGI(TAG, "Example configured to blink GPIO LED!");
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gpio_reset_pin(BLINK_GPIO);
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/* Set the GPIO as a push/pull output */
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gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);
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while(1) {
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/* Blink off (output low) */
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printf("Turning off the LED\n");
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gpio_set_level(BLINK_GPIO, 0);
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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/* Blink on (output high) */
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printf("Turning on the LED\n");
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gpio_set_level(BLINK_GPIO, 1);
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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}
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#endif
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void app_main(void)
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{
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/* Configure the peripheral according to the LED type */
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configure_led();
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while (1) {
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ESP_LOGI(TAG, "Turning the LED %s!", s_led_state == true ? "ON" : "OFF");
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blink_led();
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/* Toggle the LED state */
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s_led_state = !s_led_state;
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vTaskDelay(CONFIG_BLINK_PERIOD / portTICK_PERIOD_MS);
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}
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}
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@ -2,5 +2,7 @@
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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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set(EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/examples/common_components/led_strip)
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include($ENV{IDF_PATH}/tools/cmake/project.cmake)
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project(led_strip)
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@ -5,4 +5,6 @@
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PROJECT_NAME := led_strip
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EXTRA_COMPONENT_DIRS = $(IDF_PATH)/examples/common_components/led_strip
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include $(IDF_PATH)/make/project.mk
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@ -28,9 +28,9 @@ GPIO18 +-----------------+---|>| (WS2812)
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Open the project configuration menu (`idf.py menuconfig`).
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In the `Example Connection Configuration` menu:
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In the `Example Configuration` menu:
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* Set the GPIO number used for transmitting the IR signal under `RMT TX GPIO` optin.
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* Set the GPIO number used for transmitting the IR signal under `RMT TX GPIO` option.
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* Set the number of LEDs in a strip under `Number of LEDS in a strip` option.
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### Build and Flash
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@ -1,7 +0,0 @@
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set(component_srcs "src/led_strip_rmt_ws2812.c")
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idf_component_register(SRCS "${component_srcs}"
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INCLUDE_DIRS "include"
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PRIV_INCLUDE_DIRS ""
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PRIV_REQUIRES "driver"
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REQUIRES "")
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@ -1,3 +0,0 @@
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COMPONENT_ADD_INCLUDEDIRS := include
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COMPONENT_SRCDIRS := src
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Ładowanie…
Reference in New Issue