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diff --git a/documentation/pyparallel.rst b/documentation/pyparallel.rst index b7bab7d..00c0b95 100644 --- a/documentation/pyparallel.rst +++ b/documentation/pyparallel.rst @@ -129,6 +129,31 @@ API for tests and simulations without real hardware. +Notes +===== + +Linux +----- +1. The :manpage:`lp(4)` module must be unloaded, ``rmmod lp``. ``lp`` claims + exclusive access to the port and other programs won't be able to use it. + +2. The :manpage:`ppdev(4)` module needs to be loaded, ``modprobe ppdev``. When + ``udev`` is in use, (default with 2.6 kernels) this will create a + ``/dev/parport0``. + +3. The user needs to have write permissions to ``/dev/parport0``. Many + distributions have an ``lp`` group that owns the device; the simplest is to + add the user account to this group. Simply changing permissions on the + device is not the best strategy as they will be reverted to their defaults + next time the driver is loaded. + + +Windows +------- +The giveio driver must be installed as the module needs direct access to the +hardware. This also means that USB parallel port adapters won't be supported. + + Misc ==== References |