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samples:drivers:led_ws2812: support for nRF7002DK and nRF5340DK #64823

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Nov 13, 2023
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samples:drivers:led_ws2812: support for nRF7002DK and nRF5340DK #64823

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2 changes: 2 additions & 0 deletions samples/drivers/led_ws2812/README.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -102,6 +102,8 @@ This sample uses different drivers depending on the selected board:
I2S driver:

- thingy52_nrf52832
- nrf5340dk_nrf5340 (3.3V logic level, a logic level shifter may be required)
- should work for other boards featuring an nRF5340 host processor

SPI driver:

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5 changes: 5 additions & 0 deletions samples/drivers/led_ws2812/boards/nrf5340dk_nrf5340.conf
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@@ -0,0 +1,5 @@
CONFIG_SPI=n

CONFIG_I2S=y
CONFIG_WS2812_STRIP=y
CONFIG_WS2812_STRIP_I2S=y
36 changes: 36 additions & 0 deletions samples/drivers/led_ws2812/boards/nrf5340dk_nrf5340.overlay
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#include <zephyr/dt-bindings/led/led.h>

&pinctrl {
i2s0_default_alt: i2s0_default_alt {
group1 {
/* Default I2S config for the nRF5340, P1.13 is the output */
psels = <NRF_PSEL(I2S_SCK_M, 1, 15)>,
<NRF_PSEL(I2S_LRCK_M, 1, 12)>,
<NRF_PSEL(I2S_SDOUT, 1, 13)>,
<NRF_PSEL(I2S_SDIN, 1, 14)>;
};
};
};

i2s_led: &i2s0 {
status = "okay";
pinctrl-0 = <&i2s0_default_alt>;
pinctrl-names = "default";
};

/ {
led_strip: ws2812 {
compatible = "worldsemi,ws2812-i2s";

i2s-dev = <&i2s_led>;
chain-length = <42>; /* arbitrary; change at will */
color-mapping = <LED_COLOR_ID_GREEN
LED_COLOR_ID_RED
LED_COLOR_ID_BLUE>;
reset-delay = <500>;
};

aliases {
led-strip = &led_strip;
};
};
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