Datasheet

GPIO
GPIO, General Purpose I/O, are available on some micro processors. As they are connected
directly to the processor chip, they have very limited current and voltage tolerance, and are not ideal
t use for process control. Usually some intermediate electronic circuit is needed for this type of
applications.
The GPIO implementation in Proview uses the support for GPIO in the Linux kernel. GPIO has to
be specified in the kernel setup.
The rack level is configured with a GPIO object, and the card level with a GPIO_Module object.
Below the card level, the GPIO channels are specified with ChanDi and ChanDo objects. In the
Number attribute of the channel object, the identity of the channel is stated.
Fig GPIO configuration