SM16703 LED strips

Defines

LED_STRIP_BRIGHTNESS

Enums

enum led_strip_type_t

LED type.

Values:

enumerator LED_STRIP_WS2812

enumerator LED_STRIP_SK6812

enumerator LED_STRIP_APA106

enumerator LED_STRIP_SM16703

enumerator LED_STRIP_TYPE_MAX

Functions

void led_strip_install()

Setup library.

This method must be called before any other led_strip methods

esp_err_t led_strip_init(led_strip_t *strip)

Initialize LED strip and allocate buffer memory.

Parameters:

strip – Descriptor of LED strip

Returns:

ESP_OK on success

esp_err_t led_strip_free(led_strip_t *strip)

Deallocate buffer memory and release RMT channel.

Parameters:

strip – Descriptor of LED strip

Returns:

ESP_OK on success

esp_err_t led_strip_flush(led_strip_t *strip)

Send strip buffer to LEDs.

Parameters:

strip – Descriptor of LED strip

Returns:

ESP_OK on success

bool led_strip_busy(led_strip_t *strip)

Check if associated RMT channel is busy.

Parameters:

strip – Descriptor of LED strip

Returns:

true if RMT peripherals is busy

esp_err_t led_strip_wait(led_strip_t *strip, TickType_t timeout)

Wait until RMT peripherals is free to send buffer to LEDs.

Parameters:

strip – Descriptor of LED strip

timeout – Timeout in RTOS ticks

Returns:

ESP_OK on success

esp_err_t led_strip_set_pixel(led_strip_t *strip, size_t num, rgb_t color)

Set color of single LED in strip.

This function does not actually change colors of the LEDs. Call led_strip_flush() to send buffer to the LEDs.

Parameters:

strip – Descriptor of LED strip

num – LED number, 0..strip length - 1

color – RGB color

Returns:

ESP_OK on success

esp_err_t led_strip_set_pixels(led_strip_t *strip, size_t start, size_t len, rgb_t *data)

Set colors of multiple LEDs.

This function does not actually change colors of the LEDs. Call led_strip_flush() to send buffer to the LEDs.

Parameters:

strip – Descriptor of LED strip

start – First LED index, 0-based

len – Number of LEDs

data – Pointer to RGB data

Returns:

ESP_OK on success

esp_err_t led_strip_fill(led_strip_t *strip, size_t start, size_t len, rgb_t color)

Set multiple LEDs to the one color.

This function does not actually change colors of the LEDs. Call led_strip_flush() to send buffer to the LEDs.

Parameters:

strip – Descriptor of LED strip

start – First LED index, 0-based

len – Number of LEDs

color – RGB color

Returns:

ESP_OK on success

struct led_strip_t

#include <led_strip.h>

LED strip descriptor.

Public Members

led_strip_type_t type

LED type.

bool is_rgbw

true for RGBW strips

uint8_t brightness

Brightness 0..255, call led_strip_flush() after change.

Supported only for ESP-IDF version >= 4.3

size_t length

Number of LEDs in strip.

gpio_num_t gpio

Data GPIO pin.

rmt_channel_t channel

RMT channel.

uint8_t *buf