rpac.conf

#
# Files and path information
#
[Paths]
access control files	= /var/local/rpac/acls/

###################################
# Front Door
###################################
#
# In this example, we are managing access an AO-101 3d printer.
#
#    - The printer is given the name 'AO_101'
#	To enable the device, we 'raise' a pin, enabling the relay.
#	To disable the device, we 'drop' a pin, disabling the relay.
#
#    - A Stronglink card reader is attached to pin 0 of the Raspberry Pi.
#
#
# Note that I've disassociated readers from devices. The concept
# is that down the line you can have one reader that might be able
# to control multiple devices, using a secondary 'modifier button'
# to determine which device the card is being presented for.
#
# 
# This disassociation is also useful if you have a door with a
# card reader on either side. The two readers can control the
# same physical device (the door)

# Note that pin numbers and GPI number mapping is complicated
# on the pi (or at very least, it's inconsistent)
#

# The gpio python library we use adds a further layer of
# complication, using it's own pin numbers. Here's a breakdown of
# how the mapping works
#
# Our Pin   | Header Pin | Soc Pin (Pi 1)   | Soc Pin (Rev 2) | Note
# 0         |   11       |      17          |     17          |
# 1         |   12       |      18          |     18          |
# 2         |   13       |      21          |     27          |
# 3         |   15       |      22          |     22          |
# 4         |   16       |      23          |     23          |
# 5         |   18       |      24          |     24          |
# 6         |   22       |      25          |     25          | Not available - SPI Interrupt
# 7         |   7        |      4           |     4           | Not available - I2C Interrupt


[Device front_door]
	# 4 is the relay enabling the device, and is connected to header pin 16
	enable set pins high    = 4
	disable set pins low	= 4

    # This is the file that contains the list of allowed card IDs.
    # This must only contain a list of card-IDs, separated by line-breaks,
    # with no comments or other information allowed
	acl filename			    = front_door.carddb

[Reader front_door_reader]
	# Which device to enable/disable
	associated device	    = front_door

	# The RFID card reader becoming active will signal us
	# on pin 0 (header pin 11)
	trigger pin			      = 0

  # The hardware related to this reader. In this case it's
  # an i2c StrongLink SL 030 reader on ic2 address 0x50
	reader type			      = StrongLinkSl030Reader
	i2c address			      = 0x50