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CHARON supports NI PCI/PCIe/GPIB boards in pass-through mode using a specific driver that can be built from sources located in "/opt/charon/drivers/ni_pci_gpib_ppt" directory. Upon loading the driver (".ko" loadable module) into OS kernel at runtime it creates "/dev/gpib<i>" device for each NI PCI/PCIe/GPIB board it finds.
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There is no need to install device drivers from National Instruments.
Building NI-PCI/GPIB PCI PassThrough device driver
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| Step | Description |
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| 1 | Make sure that the required building tools and include files are installed. If they are absent install them:
The kernel version must match the version of the installed kernel-headers (i.e. this packages must have same versions. It can be verified via Check that the "kernel" and the "kernel-headers" have the same version, and ensure that system is booted from this kernel version (not from some older one and etc) with " |
| 2 | Open xterm and change the default directory to "
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| 3 | Issue "make clean; make" commands to build kernel object:
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| 4 | Check that there are no compilation errors and the file "ni_pci_gpib_ppt.ko" has been built |
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| Step | Description | |||||
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| 1 | Disable auto-loading of device drivers from National Instruments on boot (if available). Use the black list file "/etc/modprobe.d/blacklist.conf" to do that. | |||||
| 2 | Copy the GPIB kernel module to the location of Linux kernel modules, for example:
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| 3 | Enable auto load of the module:
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| 4 | Regenerate new "initramfs" image with "mkinitrd":
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Configuring CHARON
Once NI-PCI/GPIB PCI PassThrough device driver is compiled and loaded configure CHARON in the following way:
VAX configuration
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Example:
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PDP11 configuration
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Example:
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