Merge pull request #8 from stronnag/update_set_baud_rate

Update set baud rate

Author: stronnag

LTM/config.lua

@@ -31,6 +31,7 @@ S.onlyTracker = false
 -- S.LOGGER = true
 
 -- 2.3.12 and later
-S.baudrate = 115200
+-- if set to 0 (or less!) then the baud rate will not be changed
+S.baudrate = 0
 
 return S

README.md

@@ -2,13 +2,13 @@
 
 ## Introduction
 
-This project provides an OpenTX LUA script that outputs LTM (INAV'S Lightweight Tememetry) on a serial port on an OpenTX /EdgeTX radio. It is designed to work with [INAV](https://github.com/iNavFlight/inav) as the telemetry provider.
+This project provides an OpenTX LUA script that outputs LTM (INAV'S Lightweight Tememetry) on a serial port on an OpenTX / EdgeTX radio. It is designed to work with [INAV](https://github.com/iNavFlight/inav) as the telemetry provider.
 
 Typical use case:
 
 * Radiomaster TX16S radio (which has two normal / not inverted UARTS)
 * Bluetooth module attached to a radio UART
-* LTM aware ground station [mwp](https://github.com/stronnag/mwptools), ezgui, "mission planner for inav"
+* LTM aware ground station [mwp](https://github.com/stronnag/mwptools), ezgui, "mission planner for inav" or
 * Antenna tracker that uses LTM.
 
 ## Installation and Usage
@@ -36,19 +36,21 @@ Note that:
 * OpenTX 2.3.9, a bug causes no power to be supplied to the TX16S UARTS; this is fixed in the 2.3.10 nightlies.
 * OpenTX 2.3.10, a bug causes the Crossfire Flight Mode not to be set.
 * OpenTX 2.3.11, the baud rate is set incorrectly for LUA ports, rendering the data unreadable.
-* EdgeTX 2.7.0 and (2.8-dev of early May 2022) cannot set the serial baud rate to other than the default of 115200.
+* EdgeTX 2.7.1 and (2.8-dev of early May 2022) cannot set the LUA serial baud rate to other than the default of 115200.
 * The telemetry provider must be INAV for some status related fields.
 
 No known issues with
 * OpenTx 2.3.14
-* EdgeTX (2.5.0 and later)
+* EdgeTX (other than setting baud rate)
 
 ## Configuration
 
 There are a few user editable settings in the file `LTM/config.lua`; currently the user must edit this file directly as no radio UI is provdied.
 
 In particular, the `onlyTracker` setting may be used to provide only GPS data for antenna trackers. See the comments in  `LTM/config.lua` for details.
 
+The `S.baudrate` setting may be used to set the baud rate; if `S.baudrate` is `0`, then the device baud rate is unchanged, otherwise the specified baud rate is set. The default value is `0` (i.e. use radio setting).
+
 ## Audio
 
 The `audio` directory contains two synthesised voice files, `ltmon.wav` and `ltmoff.wav` that may be placed in `SOUNDS/en` and used to provide audible indications (via Special Functions) that LTM forwarding is enabled / disabled.
@@ -61,12 +63,12 @@ In the simulator human readable debug messages are generated unconditionally.
 
 ## Caveats
 
-Tested on a Radiomaster TX16S with OpenTX 2.3.9 (and 2.3.10 nightlies), internal module.
-Requires smartport (e.g. Frsky D16) compatible RX on the aircraft, and EdgeTX.
+Last tested successfully on a Radiomaster TX16S with OpenTX 2.3.15 and EdgeTX 2.7.1 and the internal module, FrSky D16 compatible RX (May 2022).
+Requires Smartport or CRSF compatible RX on the aircraft.
 
-The scripts have also been tested using Crossfire with Taranis x9D+se, OpenTX 2.3 +luac, full Crossfire TX, Nano RX and the [u360gts antenna tracker](https://github.com/raul-ortega/u360gts).
+The scripts have also been tested by others using Crossfire with Taranis x9D+se, OpenTX 2.3 +luac, full Crossfire TX, Nano RX and the [u360gts antenna tracker](https://github.com/raul-ortega/u360gts).
 
-Other OpenTX compatible radios and other RX radio systems (e.g. R9) are NOT tested and as I don't have such hardware, may not work.
+Other OpenTX/EdgeTX compatible radios and other RX radio systems (e.g. R9) are NOT tested and as I don't have such hardware.
 
 ## Copyright and Licence
 

ltm.lua

@@ -348,7 +348,7 @@ local function init()
    S = loadScript("/SCRIPTS/FUNCTIONS/LTM/config.lua")()
    dolog("Tracker only " .. string.format("%s",S.onlyTracker))
    if rmaj >= 2 and rmin >= 3 and rrev >= 12 then
-      if S.baudrate ~= 115200 then
+      if S.baudrate > 0 then
 	 setSerialBaudrate(S.baudrate)
       end
    end