26 lines
839 B
C
26 lines
839 B
C
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#pragma once
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#include <stm32wbxx_ll_dma.h>
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#include "led_driver.h"
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#define MAX_LED_COUNT 16
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// We store the HIGH/LOW durations (2 values) for each color bit (24 bits per LED)
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#define LED_DRIVER_BUFFER_SIZE (MAX_LED_COUNT * 2 * 24)
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// We use a setinel value to figure out when the timer is complete.
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#define LED_DRIVER_TIMER_SETINEL 0xFFFFU
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/** 64 transitions per us @ 64MHz. Our timing is in NANO_SECONDS */
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#define LED_DRIVER_TIMER_NANOSECOND (1000U / (SystemCoreClock / 1000000U))
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// Timings for WS2812B
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#define LED_DRIVER_T0H 400U
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#define LED_DRIVER_T1H 800U
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#define LED_DRIVER_T0L 850U
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#define LED_DRIVER_T1L 450U
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#define LED_DRIVER_TRESETL 55 * 1000U
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#define LED_DRIVER_TDONE 2000U
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// Max wait for the DMA to complete. NOTE: 4000 leds*(850ns+450ns)*24 = 124.8ms + 50ms blanking = 174.8ms
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#define LED_DRIVER_SETINEL_WAIT_MS 200
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