CloudEdge/bl_mcu_sdk
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bl_mcu_sdk/examples/spi/spi_ws2812b/readme.md

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将 board/bl706_iot/peripheral_config.h 中 BSP_USING_SPI0 的 spi 外设的 clk 配置为 8000000; 由于 WS2812B 的时序要求，所以 spi 发送时 clk 必须选择 8000000

board/bl706_iot/pinmux_config.h 中 CONFIG_GPIO3_FUNC 、CONFIG_GPIO4_FUNC 、CONFIG_GPIO5_FUNC、CONFIG_GPIO6_FUNC 选择 GPIO_FUN_SPI


$ make APP=spi_ws2812b BOARD=bl706_iot