diff --git a/boards/default_src/micropython_esp32c2/origin/build/lib/mini_bot.py b/boards/default_src/micropython_esp32c2/origin/build/lib/mini_bot.py
index de1343e4..dca92853 100644
--- a/boards/default_src/micropython_esp32c2/origin/build/lib/mini_bot.py
+++ b/boards/default_src/micropython_esp32c2/origin/build/lib/mini_bot.py
@@ -348,12 +348,13 @@ class BOT035(FrameBuffer):
 			print("Warning: Please upgrade the coprocessor firmware to use this feature")
 
 	def mic_pga(self, value=None):
+		'''0:4x, 1:8x, 2:16x, 3:32x, 4:OFF'''
 		if value is None:
 			return self._rreg(_BOT035_FLAG) >> 4
 		else:
 			self._wreg(_BOT035_FLAG, (self._rreg(_BOT035_FLAG) & 0x0F) | (value & 0x03) << 4)
 
-	def pcm_power(self, power=None):
+	def pcm_en(self, power=None):
 		if self._version >= 3:
 			if power is None:
 				return bool(self._rreg(_BOT035_STA) & 0x08)
@@ -362,28 +363,28 @@ class BOT035(FrameBuffer):
 		else:
 			print("Warning: Please upgrade the coprocessor firmware to use this feature")
 
-	def pcm_state(self, power=None):
+	def pcm_any(self):
 		return bool(self._rreg(_BOT035_STA) & 0x80)
 
-	def pcm_data(self, ibuf=1600):
+	def pcm_read(self, ibuf=1600):
 		return self._rreg(_BOT035_PCM, ibuf)
 
 	def pcm_record(self, path='mixly.wav', seconds=5, ibuf=1600, timeout=2000):
 		if self._version >= 3:
-			self.pcm_power(True)
+			self.pcm_en(True)
 			_star = time.ticks_ms()
 			_size = int(ibuf * seconds * 10)
 			_header = b'RIFF' + (36 + _size).to_bytes(4, 'little') + b'WAVEfmt \x10\x00\x00\x00\x01\x00\x01\x00' + (ibuf * 5).to_bytes(4, 'little') + (ibuf * 10).to_bytes(4, 'little') + b'\x02\x00\x10\x00data' + _size.to_bytes(4, 'little')
 			with open(path, 'wb') as f:
 				f.write(_header)
 				while _size > 0:
-					if self.pcm_state():
-						f.write(self.pcm_data(ibuf))
+					if self.pcm_any():
+						f.write(self.pcm_read(ibuf))
 						_size -= ibuf
 						_star = time.ticks_ms()
 					if time.ticks_diff(time.ticks_ms(), _star) > timeout:
 						raise OSError("Timeout write error")
-				self.pcm_power(False)
+				self.pcm_en(False)
 		else:
 			print("Warning: Please upgrade the coprocessor firmware to use this feature")