# Modelbahn

## Requirements:
Webserver with CGI enabled


## Installation:
+ copy the webinterface files to your location of the webserver
+ compile the server
+ copy the modelbahn-cgi binary to the cgi folder of the webserver
+ run the modelbahn-server application.

![Screenshot](https://steffen.gulpe.de/progs/modelbahn.png)


## Z21EMU and ATmega Sensors

Per default all devices get the same I2C defive address. As soon as the device is connected you should set up a new address for them. The following commands will set the device [0x2f] to address 0x31 and save this setting in the EPROM.

	i2cset -y 1 0x2f 0x22 0x31
	i2cset -y 1 0x2f 0x21 0x02

The following registers are used:

	0x00 .. 0x08 INPUT and OUTPUT registers dependung on device
	0x20         VERSION of the device
	0x21         Command Register
					0   no command
					1   EEPROM read
					2   EEPORM write
	0x22         I2C Address
	0x23         Input Off Delay