dcc232-en
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| + | ====== DCC232 ====== | ||
| + | [[: | ||
| + | [[: | ||
| + | |||
| + | \\ | ||
| + | ===== Introduction ===== | ||
| + | [[: | ||
| + | All personal computers now days have plenty of power free for doing much more then only show and control a model train layout. | ||
| + | Generating a digital signal for mobile and stationary decoders is one possibility to use this potential.\\ | ||
| + | \\ | ||
| + | The DCC232 library is a lightweight __DCC only__ generator for boosters like the **[[: | ||
| + | DCC signal is generated using a serial device.\\ | ||
| + | Legacy RS232 devices and many **[[: | ||
| + | |||
| + | [[http:// | ||
| + | |||
| + | \\ | ||
| + | =====Advantages===== | ||
| + | * very low CPU load | ||
| + | * no command station needed (third party firmware) | ||
| + | * complete control of the process | ||
| + | * only modem privilege is needed for accessing the serial device | ||
| + | * runs under Windows and Linux | ||
| + | \\ | ||
| + | |||
| + | =====Disadvantages===== | ||
| + | * The generated DCC signal does not fully conform to the NMRA standards; Some decoders will not operate or only partial. | ||
| + | * No direct support for occupancy detection; A separate interface, like the [[: | ||
| + | * No service mode programming. (PT) | ||
| + | \\ | ||
| + | |||
| + | ===== Features ===== | ||
| + | * 128 loco slots | ||
| + | * auto purging | ||
| + | * 14, 28 and 128 speed steps | ||
| + | * short and long loco addressing | ||
| + | * 28 mobile decoder functions | ||
| + | * Operations Mode Programming (Ops, POM) | ||
| + | * Write | ||
| + | * Read; needs a RailCOM cutout booster and detector | ||
| + | * stationary DCC decoders | ||
| + | * short circuit checking | ||
| + | * [[: | ||
| + | \\ | ||
| + | ===== Tests ===== | ||
| + | ====Ubuntu 10.10==== | ||
| + | ^ PC ^ Device ^ Chip ^ Result ^ CPU % ^ | ||
| + | | Intel Pentium Dual Core 1.73GHz 1GB | / | ||
| + | | Intel Pentium Dual Core 1.73GHz 1GB | / | ||
| + | | Intel Pentium Dual Core 1.73GHz 1GB | / | ||
| + | | Intel Atom 1.6GHz 1GB | /dev/ttyS1 | Legacy | UNSTABLE; super user only | 0...2 | | ||
| + | |||
| + | |||
| + | ====Raspbian==== | ||
| + | ^ PC ^ Device ^ Chip ^ Result ^ CPU % ^ | ||
| + | | Raspberry Pi Rev. B | / | ||
| + | | Raspberry Pi Rev. B | / | ||
| + | |||
| + | ====Windows XP==== | ||
| + | ^ PC ^ Device ^ Chip ^ Result ^ CPU % ^ | ||
| + | | Intel Celeron 300MHz 256MB | com1 | Legacy | OK | 0...3 | | ||
| + | ====Mac OS X 10.6==== | ||
| + | ^ PC ^ Device ^ Chip ^ Result ^ CPU % ^ | ||
| + | | Intel Core 2 Duo 2.26GHz 8GB | / | ||
| + | | Intel Core 2 Duo 2.26GHz 8GB | / | ||
| + | | Intel Core 2 Duo 2.26GHz 8GB | / | ||
| + | |||
| + | \\ | ||
| + | |||
| + | ===== Setup ===== | ||
| + | {{ : | ||
| + | Only the IID and the serial port has to be set, the rest is optional.\\ | ||
| + | {{: | ||
| + | |||
| + | \\ | ||
| + | ==== Device ==== | ||
| + | === Port === | ||
| + | The device name of the serial port to use with DCC232.\\ | ||
| + | Commonly used devices:\\ | ||
| + | ^ OS ^ Legacy RS232 ^ USB ^ | ||
| + | | Linux | /dev/ttyS0, /dev/ttyS1 | / | ||
| + | | Mac OS X | - | **[[: | ||
| + | | Windows | com1, com2 | com7 | | ||
| + | | RasPi | / | ||
| + | ¹) Manufacturer dependent. | ||
| + | |||
| + | \\ | ||
| + | |||
| + | ==== Slot management ==== | ||
| + | === Purge === | ||
| + | Remove idle mobile decoders, using the purge time, from the slot after the velocity is zero.\\ | ||
| + | No DCC refresh packets are generated for this address after purge.\\ | ||
| + | === Purge time === | ||
| + | The number of seconds a mobile decoder must be idle before it is purged.\\ | ||
| + | Idle = stalled.\\ | ||
| + | |||
| + | \\ | ||
| + | |||
| + | ==== Short circuit checking ==== | ||
| + | === Active === | ||
| + | Activate the short circuit checking on the DSR line in a separate watchdog thread.\\ | ||
| + | === Invert DSR === | ||
| + | Invert the short circuit signal connected to the DSR line of the RS232 interface.\\ | ||
| + | This option must be set in case the ORD-3 is used as booster.\\ | ||
| + | === Delay === | ||
| + | The time in milliseconds the short circuit must resist before the Rocrail server is informed of a short circuit.\\ | ||
| + | |||
| + | ==== PT ==== | ||
| + | === fastcvget === | ||
| + | Usable in cases of an old native RS232 interface, to get a fast reading of the CV' | ||
| + | * **Note:** With very many of USB-RS232 converters, the reading CV's is __not possible__, because the RI connection of the RS232 (pin 9) is not supported.\\ | ||
| + | \\ | ||
| + | ====== Links ====== | ||
| + | * http:// | ||
| + | * https:// | ||