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61 lines
1.3 KiB
Python
61 lines
1.3 KiB
Python
5 years ago
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"""ILI9341 demo (color palette)."""
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from time import sleep
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from ili9341 import Display, color565
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from machine import Pin, SPI
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def hsv_to_rgb(h, s, v):
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"""
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Convert HSV to RGB (based on colorsys.py).
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Args:
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h (float): Hue 0 to 1.
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s (float): Saturation 0 to 1.
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v (float): Value 0 to 1 (Brightness).
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"""
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if s == 0.0:
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return v, v, v
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i = int(h * 6.0)
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f = (h * 6.0) - i
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p = v * (1.0 - s)
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q = v * (1.0 - s * f)
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t = v * (1.0 - s * (1.0 - f))
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i = i % 6
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v = int(v * 255)
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t = int(t * 255)
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p = int(p * 255)
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q = int(q * 255)
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if i == 0:
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return v, t, p
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if i == 1:
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return q, v, p
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if i == 2:
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return p, v, t
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if i == 3:
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return p, q, v
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if i == 4:
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return t, p, v
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if i == 5:
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return v, p, q
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def test():
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"""Test code."""
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# Baud rate of 40000000 seems about the max
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spi = SPI(2, baudrate=40000000, sck=Pin(18), mosi=Pin(23))
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display = Display(spi, dc=Pin(4), cs=Pin(16), rst=Pin(17))
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c = 0
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for x in range(0, 240, 20):
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for y in range(0, 320, 20):
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color = color565(*hsv_to_rgb(c / 192, 1, 1))
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display.fill_circle(x + 9, y + 9, 9, color)
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c += 1
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sleep(9)
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display.cleanup()
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test()
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