Make pymodbus as default modbus backend

Author: dhoomakethu

tools/launcher

@@ -1,8 +1,14 @@
 #!/bin/bash
 
 echo $0
+if [[ $1 == "mtk" ]]
+then
+    BACKEND=""
+else
+    BACKEND="-p"
+fi
 root_dir="$(cd $(dirname $0)/../; pwd)"
 simu_dir="$root_dir/modbus_simulator"
 export PYTHONPATH=$root_dir
-launch_cmd="$simu_dir/main.py -p"
+launch_cmd="$simu_dir/main.py $BACKEND"
 python $launch_cmd