gadgetPool SeaTalk NMEA Installation And Operation Manual

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C o n v e r t e r

Installation and Operation

Manual

To be used with AtMega1284p processor only

Hardware Version V 3.5

Software Version 2.00

Dec 2012

Valid only with

http://www.gadgetPool.de

ATMega1284P processor

FWallenwein@gadgetPool.de

Table of Contents

Summary of Contents for gadgetPool SeaTalk NMEA

Page 1 C o n v e r t e r Installation and Operation Manual To be used with AtMega1284p processor only Hardware Version V 3.5 Software Version 2.00 Dec 2012 Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 2: Table Of Contents
Bootstrap Loader Method....................22 Circuit Diagram ......................... 23 SeaTalk & NMEA conversion Table .................. 24 Terminals & Connectors ....................25 ASCII Table ........................27 Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 3: Credits / Warning / Disclaimer
 Information from the NMEA port is transformed into SeaTalk data and sent to the SeaTalk bus.  Optionally information from both busses can be shown on a LCD display. SeaTalk is Reg. Trademark of Raymarine Inc. Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 4: Nmea Input
Date & Time $xxVTG Ground speed $xxVHW Compass $xxVLW Trip mileage, Total mileage $xxMWV Wind angle Wind Speed $xxVWR Relative Wind Speed and Angle Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 5: Special Nmea-Like Configuration Sentences
With LCD $STVER,2.00,BRIDGE*45 2.00 = This board has Software Version 2.00 With LCD = Software is for board with LCD Display BRIDGE = This Software is for SeaTalk Nmea BRIDGE Example Enter : $COLCO*45 Result: $IICOLLISIONS,000*11 $IIERRORS,0*27 No SeaTalk collisions so far.
Page 6: Nmea Output
Optional an additional $IIGLL sentence can be sent for position information $IIRSA Rudder angle $STALK special SeaTalk datagram $SNBSE special system configuration datagram Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 7: The $Stalk Sentence
– regardless as to whether it was recognised and processed or not. ( This function can be switch off by control setting – see below ) Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 8: Seatalk Input
53 Course over ground 54 UTC time 56 Date 58 Latitude & Longitude 84 Compass heading 89 Compass ST40 heading 9C Compass heading & rudder position Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 9: Seatalk Output
In this case no depth information in transferred from one bus to the other. ( If depth information is not updated within 30 sec. on one bus, sending to the other bus is activated again. ) Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 10: Seatalk Connection
+12V & GND MUST be connected, even if the SeaTalk bus is not needed. A wrong connection could damage the converter or other devices on the SeaTalk Bus. Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 11: Nmea / Rs232 Connection
RxD + GND with Jumper setting RS232 IN+/IN- with Jumper setting RS422 It is not possible to use both Input ports at the same time. Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 12: Input Jumper Rs232
Both Output port are always enabled. The SeaTalk NMEA Bridge always sends data to the RS232 Port and to the RS422 Port You can - for example - send data from the SeaTalk NMEA Bridge to a Computer and a GMDSS Radio.
Page 13 The Computer can only receive Data from the GPS and from the SeaTalk bus. It can not send any data. SeaTalk Seatalk<-> NMEA Bridge RS232 Computer Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 14: Input Jumper Rs422
NMEA + and NMEA - . Swapping NMEA + and NMEA - only results in communication failure. !! Please check your manual before connecting!! Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 15: Rs422 In -> Rs232 Out
RS422 In -> RS232 Out You can use the SeaTalk NMEA Bridge to connect a RS422 device to an RS232 computer. NMEA Talker SeaTalk Device OUT+ OUT- RS422 connec tion IN + IN - SeaTalk S eaTalk < - > Nmea...
Page 16 SeaTalk Instruments receive data from other SeaTalk instruments and RS232 RS422 from GPS. The computer cannot send any data. IN + Computer GMSDD Radio Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 17: Configuration Settings
Configuration settings The SeaTalk NMEA converter can be configured to meet the users requirements. The configuration is made by sending a NMEA-like sentence. The settings are stored in an EEProm. The configuration sentence is : $SNBSE,address,data<CR><LF> (Optionally a Checksum can be appended $SNBSE,address,data*XX<CR><LF>) ( SNBSE = Seatalk NMEA Bridge Set Eeprom ) Configuration settings a read, when the bridge gets switched on.
Page 18 0 = Do not send $IIVLW Sentence 0 = Don’t send Display light on/off to SeaTalk Bus 1 = Send Display light on/off to SeaTalk Bus Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 19 If this values is set to something between -32000 to 32000, the bridge will produce DPT sentences including the offset. Reserved. ( Used for SeaTalk NMEA Link ) 1 = send Nmea RSA sentence for rudder angle data 0 = dont send RSA sentence 31,32 Reserved.
Page 20: Options
Speed over ground in BIG-Digits. The displayed values are blanked out if no new data has been received for more than 30 seconds. Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 21: Pushbutton
Switching illumination on/off can be transmitted to SeaTalk bus. With this function the lights on all other instruments on the Seatalk bus can be remote controlled. Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 22: Software Update
Bootstrap Loader Method Set Jumpers to RS232. Connect the SeaTalk NMEA Bridge to your PC ( using RxD, TxD and GND ) Start the supplied bootstrap software on the PC. Open the Image file you would like to program into the Bridge.
Page 24: Seatalk & Nmea Conversion Table
Longitude UTC time UTC time Date Date Waypoint Name RMB/APB Waypoint Data RMB/APB Bearing Distancr to Waypoint Special NM->ST $STALK Special config. $SNBSE Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 25: Terminals & Connectors
If you use the 5V output to power other devices please make sure, that the chip 7805 has a heat sink. This chip can get very hot if it has no heat sink attached. Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...
Page 26 News and Info on the web If you have any question or suggestions – there is a SeaTalk NMEA Bridge forum on our web page. http://www.gadgetPool.de Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten...
Page 27: Ascii Table
ASCII Table Upper case letters Character Ascii Value Lower case letters ……………….. Digits Valid only with © 2004-2010 All Rights Reserved http://www.gadgetPool.de ATMega1284P processor © 2004-2010 Alle Rechte vorbehalten FWallenwein@gadgetPool.de...

This manual is also suitable for:

Seatalk rs232