tuyaopen-peripheral-leds-pixel

name	tuyaopen/peripheral-leds-pixel
description	TDL addressable LED strip (pixel) usage for TuyaOpen: register a WS2812 / SM16703P / YX1903B strip, set per-pixel or whole-strip RGB color, and refresh the strip. 灯带、像素灯、幻彩、WS2812、可寻址、RGB灯带、跑马灯、流水灯、led strip、neopixel、pixel。
when_to_use	Use when the user wants to control an addressable RGB LED strip / ring / matrix (WS2812 / NeoPixel and compatibles) — per-pixel colors, animations.
id	peripheral-leds-pixel
surfaces	["embedded"]
tags	["leds-pixel","ws2812","neopixel","strip","rgb","addressable"]

TuyaOpen TDL Addressable LED Strip (leds-pixel)

For addressable strips (WS2812 / SM16703P / YX1903B …) where each pixel has its own color. This is not the single indicator LED — for that use peripheral-led.

Write color into the pixel framebuffer, then tdl_pixel_dev_refresh() to push it to the strip. Nothing shows until you refresh.

Usually a custom peripheral. Unless the board adapts a strip, register the driver yourself (SPI port + RGB byte order) and add CONFIG_ENABLE_LEDS_PIXEL=y to app_default.config.

Driver Registration (TDD)

#include "tdd_pixel_ws2812.h"

static OPERATE_RET app_pixel_register(char *name)
{
    PIXEL_DRIVER_CONFIG_T cfg = {
        .port     = TUYA_SPI_NUM_0,    // WS2812 is driven over SPI timing
        .line_seq = RGB_ORDER,         // byte order: RGB / GRB / … per strip
    };
    return tdd_ws2812_driver_register(name, &cfg);
}

Other controllers: tdd_sm16703p_driver_register(), tdd_yx1903b_driver_register(), or PWM-based via tdd_pixel_pwm. Pick the one matching the user's IC.

---

Headers

#include "tdl_pixel_dev_manage.h"
#include "tdl_pixel_color_manage.h"

Usage Template

#include "tal_api.h"
#include "tkl_output.h"
#include "tdl_pixel_dev_manage.h"
#include "tdl_pixel_color_manage.h"

#define APP_PIXEL_NAME  "led_pixel"
#define APP_PIXEL_NUM   60

static PIXEL_HANDLE_T s_pixel_hdl = NULL;

void app_pixel_init(void)
{
    app_pixel_register(APP_PIXEL_NAME);          /* TDD register (see above) */

    if (OPRT_OK != tdl_pixel_dev_find(APP_PIXEL_NAME, &s_pixel_hdl)) {
        PR_ERR("pixel strip not found");
        return;
    }

    PIXEL_DEV_CONFIG_T cfg = {
        .pixel_num        = APP_PIXEL_NUM,
        .pixel_resolution = 255,                 /* color channel full-scale */
    };
    if (OPRT_OK != tdl_pixel_dev_open(s_pixel_hdl, &cfg)) {
        PR_ERR("pixel open failed");
    }
}

/* Set the whole strip to one color. Channels are 0..pixel_resolution. */
void app_pixel_fill(uint16_t r, uint16_t g, uint16_t b)
{
    PIXEL_COLOR_T color = { .red = r, .green = g, .blue = b, .cold = 0, .warm = 0 };
    tdl_pixel_set_single_color_all(s_pixel_hdl, &color);
    tdl_pixel_dev_refresh(s_pixel_hdl);          /* REQUIRED to display */
}

/* Set a contiguous range starting at index_start. */
void app_pixel_set_range
{
    PIXEL_COLOR_T color = { .red = r, .green = g, .blue = b };
    tdl_pixel_set_single_color(s_pixel_hdl, index_start, count, &color);
    tdl_pixel_dev_refresh(s_pixel_hdl);
}

API Reference

Function	Description
tdd_ws2812_driver_register(name, &cfg)	Register a WS2812 strip (SPI port + line_seq)
tdl_pixel_dev_find(name, &hdl)	Find the registered strip
tdl_pixel_dev_open(hdl, &cfg)	Open with pixel_num + pixel_resolution
tdl_pixel_set_single_color_all(hdl, &color)	Set every pixel to one color
tdl_pixel_set_single_color(hdl, start, num, &color)	Set num pixels from start to one color
tdl_pixel_set_multi_color(hdl, start, num, color_arr)	Set num pixels from a color array
tdl_pixel_get_color(hdl, index, &color)	Read one pixel's current color
tdl_pixel_dev_refresh(hdl)	Push the framebuffer to the strip — required after any set
tdl_pixel_dev_config(hdl, cmd, arg)	Runtime config (e.g. PIXEL_DEV_CMD_SET_PIXEL_NUM)
tdl_pixel_dev_close(hdl)	Stop and release the device

Color struct

typedef struct {
    uint16_t red;
    uint16_t green;
    uint16_t blue;
    uint16_t cold;   /* used by RGBCW strips; 0 for plain RGB */
    uint16_t warm;
} PIXEL_COLOR_T;       /* alias of LIGHT_RGBCW_T */

Each channel ranges 0 .. pixel_resolution (set in tdl_pixel_dev_open, e.g. 255 or 1000). For a plain RGB strip leave cold/warm at 0.

Enable Macro and NAME Macro

CONFIG_ENABLE_LEDS_PIXEL=y        # enables the addressable-strip subsystem
CONFIG_LEDS_PIXEL_NAME="led_pixel" # device name passed to find()

LEDS_PIXEL_NAME is the name passed to tdl_pixel_dev_find() (and the TDD register).

Reference Example

examples/peripherals/leds-pixel/