Faraday 1 Posted February 25, 2012 Share Posted February 25, 2012 Hello, I'm working on project which requires Ethernet integration, specifically and limited to making HTTP get requests. Right now I have a working prototype using Lantronix xPort, however the per unit cost is well above the rest of the components combined. Anyone have any suggestions for a integrated ethernet adaptor/ interface that can be controlled via UART and is cheap? Many thanks John Quote Link to post Share on other sites
Fred 453 Posted February 25, 2012 Share Posted February 25, 2012 I know you aked about ethernet rather than WiFi, but I'm amazed at the cost of the Roving Networks RN-XV module - 25GBP or 35USD. I've not tried it myself but according to a friend of mine it's very easy to use via UART. Quote Link to post Share on other sites
Fred 453 Posted February 25, 2012 Share Posted February 25, 2012 Just noticed your other post saying the xPort is $30, so I guess at $35 the RN-XV doesn't fit the bill either. A good price if you did need WiFi though. Quote Link to post Share on other sites
cde 334 Posted February 26, 2012 Share Posted February 26, 2012 It's cheaper getting one that has no tcp/ip stack, but that means you would need to implement a tcp/ip stack, and most of the lower end msp430s just don't have the ram. But since you are implementing a client instead of a server, it might be easier to do with a stack-less ethernet chip. Faraday 1 Quote Link to post Share on other sites
username 198 Posted February 26, 2012 Share Posted February 26, 2012 ENC28J60 is only 4usd. They got a stack and schematic for it here http://www.tuxgraphics.org/electronics/ ... 6111.shtml for the AVR... Its SPI based so you could work on porting it to the msp430. Faraday 1 Quote Link to post Share on other sites
SugarAddict 227 Posted February 26, 2012 Share Posted February 26, 2012 http://www.suntekstore.com/goods-140042 ... STM32.html I just ordered two of those... see if they show up. For the price... I'm not sure I could make something to beat it, though I could probably get close. Oh, and here's praying I don't get bent pins as pictured, lol. Faraday 1 Quote Link to post Share on other sites
chibiace 46 Posted February 26, 2012 Share Posted February 26, 2012 with the enc28j60 it may be better to go for the bigger value line chips, which have more ram and flash. the enc28j60 also comes in pdip-28, and i would recommend a rj45 mag jack which has some of the required components intergrated. Quote Link to post Share on other sites
TomKraut 17 Posted February 27, 2012 Share Posted February 27, 2012 When you need Ethernet on a MCU, it might be a good idea to use a MCU with Ethernet capabilities... like the Stellaris 6000 series. They are not much more expensive than a big VL MSP430 and an enc28j60, and you have everything in a single chip, as well as many, many example applications including tcp/ip stacks. Cheers TomKraut ike 1 Quote Link to post Share on other sites
Faraday 1 Posted February 27, 2012 Author Share Posted February 27, 2012 Thanks everyone for the suggestions, I thought it would be a simple matter to stitch on a ethernet chip as it is pretty standard fare, but I suppose not. I think I'll just hold out on the xPort- I just need ethernet for a final year project and one off production costs aren't too bad Thanks again John Quote Link to post Share on other sites
Faraday 1 Posted February 29, 2012 Author Share Posted February 29, 2012 Brilliant SugarAddict - you have caused me to do another hardware revision. Quote Link to post Share on other sites
SugarAddict 227 Posted March 22, 2012 Share Posted March 22, 2012 Quote Link to post Share on other sites
bluehash 1,581 Posted March 22, 2012 Share Posted March 22, 2012 Comm is via SPI? We must make a baseboard to fit over the LP. or use a general purpose perf board. Quote Link to post Share on other sites
SugarAddict 227 Posted March 22, 2012 Share Posted March 22, 2012 It's only MAC/PHY, still have to make/convert TCP/IP, UDP... Getting it to DHCP with my 5529 board is my first project The LP was next to it to show size... The board is larger than I was thinking it would be. Quote Link to post Share on other sites
xpg 127 Posted March 22, 2012 Share Posted March 22, 2012 SugarAddict: I just ordered that exact board. Seems like a good cheap way of doing Ethernet. Now, if I only could find a small IPv6 library to use with some of the bigger MSP430s. Quote Link to post Share on other sites
SugarAddict 227 Posted March 22, 2012 Share Posted March 22, 2012 Well, I'll be working on some IPv4... not so sure about IPv6... I might tinker with it along the way, but don't count/wait on me Quote Link to post Share on other sites
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