Params: * spi_bus = SPI bus ID (1 or 2) * led_count = count of LEDs * intensity = light intensity (float up to 1)
(self, spi_bus=1, led_count=1, intensity=1)
| 29 | buf_bytes = (0x88, 0x8e, 0xe8, 0xee) |
| 30 | |
| 31 | def __init__(self, spi_bus=1, led_count=1, intensity=1): |
| 32 | """ |
| 33 | Params: |
| 34 | * spi_bus = SPI bus ID (1 or 2) |
| 35 | * led_count = count of LEDs |
| 36 | * intensity = light intensity (float up to 1) |
| 37 | """ |
| 38 | self.led_count = led_count |
| 39 | self.intensity = intensity |
| 40 | self._rgblist = [(0,0,0)]*self.led_count |
| 41 | |
| 42 | # prepare SPI data buffer (4 bytes for each color) |
| 43 | self.buf_length = self.led_count * 3 * 4 |
| 44 | self.buf = bytearray(self.buf_length) |
| 45 | |
| 46 | # SPI init |
| 47 | try: |
| 48 | self.spi = pyb.SPI(spi_bus, pyb.SPI.MASTER, baudrate=3200000, polarity=0, phase=1) |
| 49 | except: |
| 50 | self.spi = pyb.SPI(spi_bus, baudrate=3200000, polarity=0, phase=1) |
| 51 | |
| 52 | # turn LEDs off |
| 53 | self.show([]) |
| 54 | |
| 55 | def __len__(self): |
| 56 | return self.led_count |