libs/driver: Fix code bugs detected by ruff tool.

Signed-off-by: imliubo <imliubo@makingfun.xyz>

Author: imliubo

m5stack/libs/driver/mfrc522/__init__.py

@@ -301,7 +301,7 @@ def pcd_communicate_with_picc(
     ):
         _validBits = 0
 
-        txLastBits = validBits if validBits != None else 0
+        txLastBits = validBits if validBits is not None else 0
         bitFraming = (rxAlign << 4) + txLastBits
 
         self.pcd_write_register(COMMAND_REG, PCD_IDLE)
@@ -345,7 +345,7 @@ def pcd_communicate_with_picc(
             backData = bytearray(l)
             self.pcd_read_bytes(FIFODATA_REG, backData, rxAlign)
             _validBits = self.pcd_read_register(CONTROL_REG) & 0x07
-            if validBits != None:
+            if validBits is not None:
                 validBits = _validBits
 
         # print("backData:", backData)
@@ -1072,7 +1072,7 @@ def mifare_open_uid_backdoor(self, logErrors=False) -> bool:
 
         validBits = 8
         status, response1, validBits = self.pcd_transceive_data(
-            bytearray([0x43]), validBits=validBits, rxAlign=0, rxAlign=False
+            bytearray([0x43]), validBits=validBits, rxAlign=0, checkCRC=False
         )
         if response1:
             response[: len(response1)] = response1

m5stack/libs/driver/mfrc522/cmd.py

@@ -1,3 +1,4 @@
+from micropython import const
 # MFRC522 commands. Described in chapter 10 of the datasheet.
 
 # no action, cancels current command execution

m5stack/libs/driver/mfrc522/reg.py

@@ -1,3 +1,4 @@
+from micropython import const
 # MFRC522 registers. Described in chapter 9 of the datasheet.
 # Page 0: Command and status
 

m5stack/libs/driver/rotary/rotary.py

@@ -8,6 +8,7 @@
 #   https://github.com/MikeTeachman/micropython-rotary
 
 import micropython
+from micropython import const
 
 _DIR_CW = const(0x10)  # Clockwise step
 _DIR_CCW = const(0x20)  # Counter-clockwise step

m5stack/libs/module/dual_kmeter.py

@@ -1,3 +1,4 @@
+from micropython import const
 from .mbus import i2c1
 import struct
 

m5stack/libs/unit/lorawan.py

@@ -4,7 +4,7 @@
 
 class LoRaWANUnit(LoRaWAN_470):
     def __init__(self, port):
-        super(LoRaWAN, self).__init__(tx=port[1], rx=port[0])
+        super(LoRaWAN_470, self).__init__(tx=port[1], rx=port[0])
         self.tx = port[1]
         self.rx = port[0]