Final pass

Author: Jonathan Swoboda

components/sx127x.rst

@@ -37,8 +37,10 @@ Configuration variables:
 
 - **rst_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): Reset pin.
 - **nss_pin** (**Required**, :ref:`Pin Schema <config-pin_schema>`): SPI select pin.
-- **dio0_pin** (**Optional**, :ref:`Pin Schema <config-pin_schema>`): Digital IO pin 0, required in
+- **dio0_pin** (**Optional**, :ref:`Pin Schema <config-pin_schema>`): Digital IO pin 0, only required in
   packet mode.
+- **dio2_pin** (**Optional**, :ref:`Pin Schema <config-pin_schema>`): Digital IO pin 2, only required for
+  FSK debug.
 - **frequency** (**Required**, int): Frequency in Hz of the transceiver.
 - **modulation** (**Required**, enum): Modulation can be ``OOK`` or ``FSK``.
 - **payload_length** (**Optional**, int): If greater than zero packet mode is enabled, otherwise
@@ -54,13 +56,11 @@ Configuration variables:
 - **preamble_polarity** (**Optional**, int): Polarity of the preamble, either 0xAA or 0x55.
 - **preamble_errors** (**Optional**, int): Number of chip errors tolerated in the receiver.
 - **sync_value** (**Optional**, list): Synchronization bytes found after the preamble and before the
-  payload. Required in packet mode.
+  payload.
 
 Receiver configuration variables:
 *********************************
 
-- **dio2_pin** (**Optional**, :ref:`Pin Schema <config-pin_schema>`): Digital IO pin 2, required for
-  ``rx_duration``.
 - **rx_start** (**Optional**, bool): Start the receiver automatically on boot.
 - **rx_bandwidth** (**Optional**, enum): Receive bandwidth can be ``2_6kHz``, ``3_1kHz``, ``3_9kHz``,
   ``5_2kHz``, ``6_3kHz``, ``7_8kHz``, ``10_4kHz``, ``12_5kHz``, ``15_6kHz``, ``20_8kHz``, ``25_0kHz``,
@@ -71,9 +71,9 @@ Receiver configuration variables:
   (ie closer to -128) too much noise will get through. When receiving FSK without a preamble configured
   ``rx_floor`` is used to trigger the receiver.
 - **rx_duration** (**Optional**, int or :ref:`config-time`): Requires ``dio0_pin`` and ``dio2_pin`` to be
-  configured in continuous mode. It is recommended to use ``rx_duration`` for FSK debug only. The FSK
-  demodulator unlike OOK cannot be gated by signal strength. In order isolate the wanted signal DIO2
-  can be gated until the receiver is triggered by either ``rx_floor`` or preamble detection.
+  configured in continuous mode. The FSK demodulator, unlike OOK, cannot be gated by signal strength. In
+  order to isolate the wanted signal DIO2 can be gated until the receiver is triggered by ``rx_floor`` or
+  preamble detection. Intended for FSK debug, packet mode is recommended for FSK.
 
 Transmit configuration variables:
 *********************************