53 lines
1.3 KiB
Python
53 lines
1.3 KiB
Python
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import time
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from machine import Pin
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import rp2
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max_lum =100
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r=0
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g=0
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b=0
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@rp2.asm_pio(sideset_init=rp2.PIO.OUT_LOW, out_shiftdir=rp2.PIO.SHIFT_LEFT, autopull=True, pull_thresh=24)
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def ws2812():
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T1 = 2
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T2 = 5
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T3 = 3
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wrap_target()
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label("bitloop")
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out(x, 1) .side(0) [T3 - 1]
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jmp(not_x, "do_zero") .side(1) [T1 - 1]
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jmp("bitloop") .side(1) [T2 - 1]
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label("do_zero")
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nop() .side(0) [T2 - 1]
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wrap()
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# Create the StateMachine with the ws2812 program, outputting on Pin(4).
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sm = rp2.StateMachine(0, ws2812, freq=8_000_000, sideset_base=Pin(25))
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# Start the StateMachine, it will wait for data on its FIFO.
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sm.active(1)
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# Color change
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while True:
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for i in range(0,max_lum):
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r=i
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b=max_lum-i
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rgb =(g<<24) | (r<<16) | (b<<8)
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sm.put(rgb)
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time.sleep_ms(10)
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time.sleep_ms(300)
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for i in range(0,max_lum):
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g=i
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r=max_lum-i
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rgb =(g<<24) | (r<<16) | (b<<8)
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sm.put(rgb)
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time.sleep_ms(10)
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time.sleep_ms(300)
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for i in range(0,max_lum):
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b=i
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g=max_lum-i
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rgb =(g<<24) | (r<<16) | (b<<8)
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sm.put(rgb)
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time.sleep_ms(10)
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time.sleep_ms(300)
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