初始化提交

boards/default/micropython/build/lib/tm1650.py

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+"""
+TM1650 for Four Digit LED Display
+
+CircuitPython library for the TM1650
+=======================================================
+
+#Changed from circuitpython to micropython       20220216
+
+dahanzimin From the Mixly Team 
+"""
+import time
+from micropython import const
+
+
+COMMAND_I2C_ADDRESS        = const(0x24)
+DISPLAY_I2C_ADDRESS        = const(0x34)
+
+
+buf = (0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71)
+
+class TM1650:
+
+	def __init__(self, i2c_bus):
+		self.i2c = i2c_bus
+		self._intensity = 2
+		self.dbuf = [0, 0, 0, 0]
+		self.tbuf = bytearray(1)
+		self.on()
+		
+	def intensity(self, dat = -1):
+		if dat < 0 or dat > 8:
+			return self._intensity
+		if dat == 0:
+			self.off()
+		else:
+			self._intensity = dat
+			self.cmd((dat<<4)|0x01)
+			
+	def cmd(self,command):
+		self.tbuf[0]  = command &0xff
+		self.i2c.writeto(COMMAND_I2C_ADDRESS, self.tbuf)
+			
+	def dat(self,bit, data):
+		self.tbuf[0] = data&0xff
+		self.i2c.writeto(DISPLAY_I2C_ADDRESS + bit%4, self.tbuf)
+
+	def on(self):
+		self.cmd((self._intensity<<4)|0x01)
+
+	def off(self):
+		self._intensity = 0
+		self.cmd(0)
+
+	def clear(self):
+		self.dat(0, 0)
+		self.dat(1, 0)
+		self.dat(2, 0)
+		self.dat(3, 0)
+		self.dbuf = [0, 0, 0, 0]
+
+	def showbit(self, num, bit = 0):
+		self.dbuf[bit%4] = buf[num%16]
+		self.dat(bit, buf[num%16])
+
+	def shownum(self, num):
+		if num < 0:
+			self.dat(0, 0x40)   # '-'
+			num = -num
+		else:
+			self.showbit((num // 1000) % 10)
+		self.showbit(num % 10, 3)
+		self.showbit((num // 10) % 10, 2)
+		self.showbit((num // 100) % 10, 1)
+
+	def showhex(self, num):
+		if num < 0:
+			self.dat(0, 0x40)   # '-'
+			num = -num
+		else:
+			self.showbit((num >> 12) % 16)
+		self.showbit(num % 16, 3)
+		self.showbit((num >> 4) % 16, 2)
+		self.showbit((num >> 8) % 16, 1)
+        
+	def showDP(self, bit = 1, show = True):
+		if show:
+			self.dat(bit, self.dbuf[bit] | 0x80)
+		else:
+			self.dat(bit, self.dbuf[bit] & 0x7F)