add pinout comment
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@ -37,14 +37,14 @@
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#define WS2812B_SPI_DR SPI1_DR
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#define WS2812B_SPI_RCC RCC_SPI1
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#define WS2812B_SPI_PORT GPIOA
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#define WS2812B_SPI_CLK GPIO_SPI1_SCK
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#define WS2812B_SPI_DOUT GPIO_SPI1_MISO
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#define WS2812B_SPI_CLK GPIO_SPI1_SCK // connect PWM output to clock input on PA5
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#define WS2812B_SPI_DOUT GPIO_SPI1_MISO // connect WS2812b DIN to MISO pin PA6
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#define WS2812B_TIMER TIM3
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#define WS2812B_TIMER_RCC RCC_TIM3
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#define WS2812B_TIMER_OC TIM_OC3
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#define WS2812B_CLK_RCC RCC_GPIOB
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#define WS2812B_CLK_PORT GPIOB
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#define WS2812B_CLK_PIN GPIO_TIM3_CH3
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#define WS2812B_CLK_PIN GPIO_TIM3_CH3 // connect SPI clock input to PWM clock output PB0
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#define WS2812B_DMA DMA1 // DMA1 supports SPI1_TX interrupt
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#define WS2812B_DMA_RCC RCC_DMA1 // follows previous definition
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#define WS2812B_DMA_CH DMA_CHANNEL3 // only DMA1 channel 3 supports SPI1_TX interrupt
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