ACAB Setup Instructions

The goal of this page is to gather all information needed to set up an ACAB installation from the ground up.

The currently used hardware can be found at https://github.com/schneider42/moodlamp-rf

The board and schematic used for the ACAB installations are board/buslamp.{brd,sch} and are designed with EAGLE.

The hrdware uses RS484 to signal data to the lamps and a 24 V to 28 V supply voltage. Both the RS484 signal and the supply voltage
are crried on a single cable. To keep the cost down standard Cat 5 network cables are used.

To communicate with the host computer, the RS484 interface has to be adapted to another interface. The device described by board/ub.{brd,sch}.
It is intended to be used with our IPv6 home automation project, but can also be used to act as an USB to RS485 bridge.

The software for the RS485 bridge can be found inside the rs485bridge/ directory. It translates frames from a normal serial connection to
the RS485 bus used by the system. When used with the device mentioned above, it can be used to connect an ACAB installation to a PC.

To program the RS485 bridge:

cd rs485bridge
make
make fuse
make program

The bootloader for the boards can be found at https://github.com/schneider42/moodlamp-rf inside the ubloader/ directory.

The bootloader is used to update the firmware of the lamps while they are inside an installation and therefore inaccessible.
It consists of a small bootloader program, running on the lamps, and a set of Python and bash scripts to upload new firmeare to the lamps.

The bootloader can upload new firmware to a lamp and program arbitrary parts of the EEPROM. To single out a lamp on the bus and only programm a single one,
the bootloader can be used to compare an arbitrary section of the EEPROM to data transmitted via the bus.

The scripts use this feature to select a single lamp after all lamps performed a power on reset.

To flash lamps which have not yet a uniqe EEPROM content, the bootloader can be forced to consider the lamp selected.

./select-m644p [<ID>]

Starts to send the select command to the bus. If a lamp with a bootloader reboots and has the corresponding id programmed,
it will get selected. If no id is supplied any lamp on the bus will get selected. After a lamp got selected, the scripts returns.
If a lamp got selected, it turns green. If a lamp is not selected it stays red.

./set-m644p <ADDRESS>

Sets the address of a lamp to <ADDRESS>. <ADDRESS> must be a hexadecimal number greater 0x10. Addresses smaller than 0x10 are used for
multicast addressing. Example: set-m644p 5B

./flash-m644p <BINARY>

Loads the binary at <BINARY> directory and sends it to the lamp.

./boot-m644p

Starts the program inside the selected lamp. This command always return with a timeout.

Flash the bootloader to the lamp:

cd ubloader
make
make fuse
make program

Compile the moodlamp firmware:

cd moodlamp-bus
make

Connect the RS485 bridge with the lamp and apply 24V power to the lamp. The lamp starts to light up red.

cd ubloader
./select-m644p
./set-m644p <ADDRESS>   #us a diffeent address for each lamp!
./flash-m644p ../moodlamp-bus/fnordlicht.bin
./boot-m644p

Compile the moodlamp firmware:

cd moodlamp-bus
make

Start to select any lamp:

cd ubloader
./select-m644p

Connect the RS485 bridge to the lamp and apply 24V power to the lamp. The lamp turns green.

./flash-m644p ../moodlamp-bus/fnordlicht.bin
./boot-m644p

The lamps should now boot the new firmware.

Compile the moodlamp firmware:

cd moodlamp-bus
make

Start to select the specific lamp

cd ubloader
./select-m644p <ADDRESS>  #Example: ./select-m644p "\x5A"

Toggle the power of all lamps, The specified lamp turns green and the script returns.

Flash the new firmare:

./flash-m644p ../moodlamp-bus/fnordlicht.bin
./boot-m644p