Update CXP-12 sample code and pypylon readme. Fixed missing vTools on…

… windows wheels.

.github/workflows/main.yml

@@ -175,7 +175,7 @@ jobs:
         run: |
           cd pylon-installer
           ren Basler-pylon-*.exe Basler-pylon.exe
-          $process = Start-Process Basler-pylon.exe -Wait -ArgumentList '/quiet /install=GigE_Runtime;USB_Runtime;Camera_Link_Runtime;CoaXPress_Runtime;GenTL_Consumer_Support;CamEmu_Support;SDKs;DataProcessing_SDK' -PassThru
+          $process = Start-Process Basler-pylon.exe -Wait -ArgumentList '/quiet /install=GigE_Runtime;USB_Runtime;Camera_Link_Runtime;GenTL_Consumer_Support;CamEmu_Support;SDKs;DataProcessing_SDK;DataProcessing_vTools' -PassThru
           Write-Host "Process finished with return code:" $process.ExitCode
 
       - name: Build wheels

README.md

@@ -117,6 +117,8 @@ For instance:
 * pylon vTools are supported on pylon 7.0.0 and newer.
 * pylon vTools are supported on pypylon 3.0 and newer only on Windows 10/11 64 bit, Linux x86_64 and Linux aarch64. 
 * For pylon vTools that require a license refer to: https://www.baslerweb.com/en/software/pylon-vtools/
+* CXP-12: To use CXP with pypylon >= 4.0.0 you need to install the CXP GenTL producer and drivers using the pylon Camera Software Suite setup.
+
 
 ## Binary Installation
 The easiest way to get pypylon is to install a prebuild wheel.

samples/ifacenodemap_pocxp.py

@@ -2,8 +2,14 @@
 # Here we are going to use the interface node map of a Basler CXP interface
 # card to toggle 'Power Over CoaXPress' (PoCXP) between 'Auto' and 'Off'.
 
+from os import environ
 from pypylon import pylon
 
+# First check if GENICAM_GENTL64_PATH environment variable is set.
+# This is set automatically by the Basler setup when installing pylon CXP
+if environ.get('GENICAM_GENTL64_PATH') is None:
+    raise RuntimeError("GENICAM_GENTL64_PATH not set! Please install the CXP GenTL producer and drivers using the pylon Camera Software Suite setup.")
+
 # We need access to the interface node map. This can only be obtained from
 # a transport layer. Therefore we have to create the TL first.
 tl = pylon.TlFactory.GetInstance().CreateTl('BaslerGTC/Basler/CXP')