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author | Eric S. Raymond <esr@thyrsus.com> | 2012-04-25 04:44:41 -0400 |
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committer | Eric S. Raymond <esr@thyrsus.com> | 2012-04-25 04:44:41 -0400 |
commit | a992ebc4f074786a2784010f64ea94b66663bffc (patch) | |
tree | ce41a03fb680c81ab37d01994fcf8423554c6083 /www/faq.html.in | |
parent | 3e92a9f47b173348e46258e040d55c89c4d84a76 (diff) | |
download | gpsd-a992ebc4f074786a2784010f64ea94b66663bffc.tar.gz |
Document NMEA2000 support.
Diffstat (limited to 'www/faq.html.in')
-rw-r--r-- | www/faq.html.in | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/www/faq.html.in b/www/faq.html.in index 7d102e17..1d29442a 100644 --- a/www/faq.html.in +++ b/www/faq.html.in @@ -88,7 +88,6 @@ GPSD Frequently Asked Questions <li><a href='#web'>How do I get gpsd data into a web page?</a></li> <li><a href='#baud'>Why is there no option to fix baud rate?</a></li> <li><a href='#willitwork'>Will this GPS work? It's not on the hardware list.</a></li> -<li><a href='#nmea2000'>Does gpsd support NMEA2000?.</a></li> <li><a href='#conflict'>Why does GPSD interfere with non-GPS USB devices?</a></li> <li><a href='#efficiency'>What is gpsd's CPU and power overhead?</a></li> <li><a href='#usblockup'>My USB port becomes unavailable after gpsd uses it.</a></li> @@ -775,22 +774,6 @@ specifications don't say so. A receiver claiming mac compatibility is usually based on one of the common bridge chips from FTDI, Prolific or Silicon Laboratories. These just work.</p> -<h1 id='nmea2000'>Does gpsd support NMEA2000?</h1> - -<p>Not yet. NMEA2000 is not a byte-stream protocol; it can't be shipped over -serial or USB links. It relies on a message-oriented physical layer -called Controller Area Network (CAN) that is widely used to network -automotive electronics. Without hardware mediation to map the -message into self-describing packets on a serial link, there's no -way gpsd can see these.</p> - -<p>There is early-stage Linux kernel support that talks to a CAN -networking card. As of March 2012 we've had code for NMEA200 support -submitted, but in a form that is difficult to integrate with GPSD's -architecture. Merging it is going to take time and some tricky -refactoring. There are also some headache-inducing issues around -how it is to be regression-tested.</p> - <h1 id='conflict'>Why does GPSD interfere with non-GPS USB devices?</h1> <p>Most USB devices have a defined <a |