初始化提交

boards/default/micropython/build/lib/tm1680.py

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+"""
+TM1680
+
+library for the TM1680 Matrix32x12
+=======================================================
+
+#Preliminary composition					20230412
+
+@dahanzimin From the Mixly Team
+"""
+import uframebuf
+from micropython import const
+
+TM1680_SYS_EN			= const(0x81)
+TM1680_LED_ON			= const(0x83)
+TM1680_COM_16N			= const(0xA4)
+
+class TM1680(uframebuf.FrameBuffer_Uincode):
+	def __init__(self, i2c, address=0x72, brightness=0.3, width=32, height=12):
+		self._device= i2c
+		self._address = address	
+		self._blink_rate=0
+		self._brightness=brightness		
+		self._buffer = bytearray((width + 7) // 8 * height)
+		super().__init__(self._buffer, width, height, uframebuf.MONO_HMSB)
+		self._write_cmd(TM1680_SYS_EN)	 #打开系统振荡器
+		self._write_cmd(TM1680_LED_ON)	 #开启 LED 循环
+		self._write_cmd(TM1680_COM_16N)	 #16COM Nmos
+		self.blink_rate(0)
+		self.set_brightness(brightness)
+		self.fill(0)
+		self.show()
+
+	def _write_cmd(self, val):
+		'''I2C write command'''
+		self._device.writeto(self._address,val.to_bytes(1, 'little'))
+
+	def blink_rate(self, rate=None):
+		if rate is None:
+			return self._blink_rate
+		if not 0 <= rate <= 3:
+			raise ValueError("Blink rate must be an integer in the range: 0-3")
+		rate = rate & 0x03
+		self._blink_rate = rate
+		self._write_cmd(0x88 | rate)
+
+	def get_brightness(self):
+		return self._brightness
+
+	def set_brightness(self, brightness):
+		if not 0.0 <= brightness <= 1.0:
+			raise ValueError("Brightness must be a decimal number in the range: 0.0-1.0")
+		self._brightness = brightness
+		xbright = round(15 * brightness)
+		xbright = xbright & 0x0F
+		self._write_cmd(0xB0 | xbright)
+
+	def show(self):
+		"""Refresh the display and show the changes."""
+		tm_buffer = bytearray(48)
+		for i in range(len(self._buffer)):
+			if i<24:	#Convert the buffer content according to the address of tm1680 
+				tm_buffer[i]=self._buffer[i*2-1] if i%2  else self._buffer[i*2] 
+			else:
+				tm_buffer[i]=self._buffer[(i-23)*2-1] if i%2  else self._buffer[(i-23)*2] 
+						#Convert the high and low 4 bits of the address content
+			tm_buffer[i]= (tm_buffer[i]>>4) | (tm_buffer[i] <<4)
+		self._device.writeto_mem(self._address,0x00,tm_buffer)