Post by thread:EtherNet with a PIC (Was: PIC

> I've seen a project on Circuit Cellar that used a microcontroller connected > directly to a NE2000 card making it network-enabled, but there were > insuffecient circuit and firmware details to build one (some of the project {Quote hidden}> was proprietary). > > Does anyone have the pin/signal details for a standard NE2000-compatible > card, and perhaps the command set for setup and tx/rx? I can make my way > through the Linux drivers I find on the net (that's all the info I find > software-wise), but none of those offer detailed explanations of the > signals or commands. > > JB > I saw a circuit for a Crystal Semiconductor CS8900 standalone ethernet interfaced directly to a PIC16C74. I don't know much about the host interface to a NE2000 NIC, but, I don't think the CS8900 is compatible. At least the documentation on the device said nothing about NE2000 compatibility. If simple ethernet connectivity is what you are interested in, you may want to look at this IC. Basically, the CS8900 is a highly integrated single chip10bX ethernet NIC. Two of the very nice things about this package was the integrated 4 K of onboard RAM, and integrated bus drivers. You didn't need any external RAM or much of it on your microcontroller, and only a simple surface mount transformer and you have a NIC capable of residing on a 10b2 network. You can get information about the CS8900 here at http://www.cirrus.com/ftp/pubs/8900.pdf You may also wish to look at Ethernet Controller Technical Reference Manual at http://www.cirrus.com/ftp/pubs/an83.pdf The creator of this design used a PIC16C74, just because "... becuase it had the needed 16 I/O pins and I had a few here on hand..." The design and code he supplied generated an ICMP echo reply when pinged. This is really pretty sophisticated and an excellent place, IMHO, to start. The website that used to host this gentleman's pages no longer has them available. I serendipitously mirrored the pages before they disappeared. The bottom of the page listed his contact information as "Gary T. Desrosiers spam_OUTdesrosiTakeThisOuTpcnet.com" He used to sell unstuffed PCB's for mounting the '8900 and support hardware for the reasonable price of US $59.00. I purchased one, but the project acquired a lower priority and I wasn't able to finish debugging my proto. -d

On Mon, 8 May 2000, David Kott wrote: > I serendipitously mirrored the pages before they disappeared. The bottom of > the page listed his contact information as "Gary T. Desrosiers > .....desrosiKILLspam@spam@pcnet.com" Gary has just move to San Francisco and should be getting his e-mail working very shortly. I personally don't know him, but he posts occasionally to the pilot-unix mailing list. If you want, I can notify you when I see a post from his new address. Scott

> On Mon, 8 May 2000, David Kott wrote: > > > I serendipitously mirrored the pages before they disappeared. The bottom of > > the page listed his contact information as "Gary T. Desrosiers > > desrosiKILLspampcnet.com" > > Gary has just move to San Francisco and should be getting his e-mail working > very shortly. I personally don't know him, but he posts occasionally to the > pilot-unix mailing list. If you want, I can notify you when I see a post from > his new address. > > Scott > I think a lot of PIClisters would benefit from Gary's projects and, like myself, would appreciate a posting the URL to his PIC pages when he has relocated them. -d

You can find this project, connecting a CS8900 to a PIC, at http://www.embeddedethernet.com , last I checked. Also, the PicoWeb uses the RealTek 8019 chip, which seems to be in most every cheap-o Ethernet card out there. Supply shouldn't be too much of a problem for it. -Randy Glenn .....PICxpertANTISPAMKILLspam.....techie.com (remove ANTISPAM) http://i.am/PICxpert "My Finder has died of fits, chokin', My Finder has quite ceased to be. OS X's new Finder looks broken, Please bring back my Finder to me!" - A concerned Mac user =========== To unsubscribe, send a message containing the text "unsubscribe PICLIST" to EraseMELISTSERVspam_OUTTakeThisOuTMITVMA.MIT.EDU Any questions about the list? http://www.piclist.com/ {Original Message removed}

I have three from a sample request. Willing to part with them. ----- Original Message ----- From: Mark Willis <mwillisspam_OUTFOXINTERNET.NET> To: <@spam@PICLISTKILLspamMITVMA.MIT.EDU> Sent: Monday, May 08, 2000 3:49 PM Subject: Re: EtherNet with a PIC (Was: PIC > NE2000 [OT]) {Quote hidden}> Last I checked, the Cirrus (who bought out Crystal) stocks of this nice > chip were all in Allocation, i.e. You & I can NOT get any yet... Drat! > > Mark > > David Kott wrote: > <snipped> > > I saw a circuit for a Crystal Semiconductor CS8900 standalone ethernet > > interfaced directly to a PIC16C74. I don't know much about the host > > interface to a NE2000 NIC, but, I don't think the CS8900 is compatible. >

No. Not at all. The USB/Network devices are USB peripherals. The USB PIC is a USB peripheral. Two peripherals do NOT talk to each other. You need to have a host (PC/MAC) USB device. -Rob http://usbsimm.home.att.net {Quote hidden}> -----Original Message----- > From: John De Villiers [KILLspambbjKILLspamPLZ.CO.ZA] > Sent: Friday, May 12, 2000 3:42 PM > To: RemoveMEPICLISTTakeThisOuTMITVMA.MIT.EDU > Subject: Re: EtherNet with a PIC (Was: PIC > NE2000 [OT]) > > > Now that there are USB network cards available, can one not > use one of the > pic's with a USB port to chat to one of these USB network > cards and that way > get it on the net ?? > > John >

> -----Original Message----- > From: Kevin McCusker [spamBeGonekmccuskespamBeGoneOPTONLINE.NET] > Sent: 10 May 2000 00:24 > To: TakeThisOuTPICLISTEraseMEspam_OUTMITVMA.MIT.EDU > Subject: Re: EtherNet with a PIC (Was: PIC > NE2000 [OT]) > > > I have three from a sample request. Willing to part with them. More info, please? One of the downsides to being a "software" engineer is the general inability to obtain samples of hardware... Oh well. Ta, Peter -- Peter S Bond Software Engineer Motorola GPD, Box 108 Tel No +44 1793 565557 16 Euro Way, Blagrove Mobile +44 7715 176026 Swindon, SN5 8YQ, UK Fax No +44 1793 541228 RemoveMEPeter.s.BondTakeThisOuTmotorola.com