Added pip3 stuff.

doc/erko_howto_tools.txt

@@ -706,6 +706,9 @@ Quartus version meeting minutes 13 may 2020 (RW, LH JH, EK):
 * Linux
 *******************************************************************************
 
+# Linux Mint version
+> cat /etc/issue
+
 https://regexr.com/
 
 https://linuxize.com/
@@ -801,9 +804,16 @@ sudo chgrp -R software dirname  # recursively change group of 'dirname' to 'soft
 
 sudo chown user_name file_name  # change user,group
 
-# Linux upgrade
+# Linux Mint 20.3 upgrade 26 april 2022
 https://linuxmint-user-guide.readthedocs.io/en/latest/upgrade-to-mint-20.html
 
+sudo pip3 install matplotlib
+sudo apt-get install python3-pil.imagetk
+> python3 base/test_plot.py # werkt nu
+sudo pip3 install asyncua
+./sdp_rw.py --host dop421 -l  # werkt nu
+
+
 *******************************************************************************
 * ICT diensten
 *******************************************************************************
@@ -944,10 +954,6 @@ Gelukt !
 * SDPTR
 *******************************************************************************
 
-sudo pip3 install setuptools-rust
-sudo pip3 install asyncua
-
 :kooistra@dop466:/dop466_0/kooistra/git/sdptr/test/py/control$ ./sdp_rw.py --host dop421 -l
 :kooistra@dop466:/dop466_0/kooistra/git/sdptr/test/py/control$ ./sdp_rw.py --host dop421 -r firmware_version
 
-