Update readme.md.

README.md

@@ -20,3 +20,35 @@ How to compile:
 
  Now you can run the program by typing: dsremote
 
+
+In order to let the system load the usbtmc driver automatically,
+proceed as follows:
+
+Create a new group, usbtmc:
+
+sudo groupadd usbtmc
+
+Add yourself to this group:
+
+sudo usermod -a -G usbtmc <your username>
+
+
+Create a file /etc/udev/rules.d/usbtmc.rules with the following content:
+
+  ####################################################################################
+  # USBTMC instruments
+
+  # Rigol Technologies  DS6000 series
+  SUBSYSTEMS=="usb", ACTION=="add", ATTRS{idVendor}=="1ab1", ATTRS{idProduct}=="04b0", GROUP="usbtmc", MODE="0660"
+
+  # Devices
+  KERNEL=="usbtmc/*",       MODE="0660", GROUP="usbtmc"
+  KERNEL=="usbtmc[0-9]*",   MODE="0660", GROUP="usbtmc"
+  ####################################################################################
+
+
+Disconnect and connect the osciloscope again (or reboot).
+
+
+
+