modify .receive timeout - fix README typo

Author: jerryneedell

README.rst

@@ -47,7 +47,6 @@ For breakout boards or other configurations where the boards are separated,
 it may be necessary to reduce the baudrate for reliable data transmission.
 The baud rate may be specified as an keyword parameter when initializing the board.
 To set it to 1000000 use :
-.. code-block:: python# Initialze RFM radio
 .. code-block:: python
 # Initialze RFM radio
 rfm9x = adafruit_rfm9x.RFM9x(spi, CS, RESET, RADIO_FREQ_MHZ,baudrate=1000000)

adafruit_rfm69.py

@@ -741,31 +741,32 @@ def receive(self, timeout=0.5, keep_listening=True):
         packet = None
         # Enter idle mode to stop receiving other packets.
         self.idle()
-        if not timed_out:
-            # Read the data from the FIFO.
-            with self._device as device:
-                self._BUFFER[0] = _REG_FIFO & 0x7F  # Strip out top bit to set 0
-                                                    # value (read).
-                device.write(self._BUFFER, end=1)
-                # Read the length of the FIFO.
-                device.readinto(self._BUFFER, end=1)
-                fifo_length = self._BUFFER[0]
-                # Handle if the received packet is too small to include the 4 byte
-                # RadioHead header--reject this packet and ignore it.
-                if fifo_length < 4:
-                    # Invalid packet, ignore it.  However finish reading the FIFO
-                    # to clear the packet.
-                    device.readinto(self._BUFFER, end=fifo_length)
-                    packet = None
-                else:
-                    # Read the 4 bytes of the RadioHead header.
-                    device.readinto(self._BUFFER, end=4)
-                    # Ignore validating any of the header bytes.
-                    # Now read the remaining packet payload as the result.
-                    fifo_length -= 4
-                    packet = bytearray(fifo_length)
-                    device.readinto(packet)
-            # Listen again if necessary and return the result packet.
-            if keep_listening:
-                self.listen()
+        if timed_out:
+            return None
+        # Read the data from the FIFO.
+        with self._device as device:
+            self._BUFFER[0] = _REG_FIFO & 0x7F  # Strip out top bit to set 0
+                                                # value (read).
+            device.write(self._BUFFER, end=1)
+            # Read the length of the FIFO.
+            device.readinto(self._BUFFER, end=1)
+            fifo_length = self._BUFFER[0]
+            # Handle if the received packet is too small to include the 4 byte
+            # RadioHead header--reject this packet and ignore it.
+            if fifo_length < 4:
+                # Invalid packet, ignore it.  However finish reading the FIFO
+                # to clear the packet.
+                device.readinto(self._BUFFER, end=fifo_length)
+                packet = None
+            else:
+                # Read the 4 bytes of the RadioHead header.
+                device.readinto(self._BUFFER, end=4)
+                # Ignore validating any of the header bytes.
+                # Now read the remaining packet payload as the result.
+                fifo_length -= 4
+                packet = bytearray(fifo_length)
+                device.readinto(packet)
+        # Listen again if necessary and return the result packet.
+        if keep_listening:
+            self.listen()
         return packet