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i want my at89c52 to be connected into the internet,i use the ucos2 RTOS ,is it possible? is there any better ways to tackle the problem? for example better RTOS,or i have to change the microcontroller? thanks!
First you need to review the TCP/IP stack operation for internet. Suggest that you search the app notes on this web site for TCP/IP information and links to other sites for additional TCP/IP information. Bradford
"I want my at89c52 to be connected into the internet" Why? What exactly do you mean by, "connected into the internet?" "is it possible? is there any better ways to tackle the problem? for example better RTOS,or i have to change the microcontroller?" Certainly it is possible to do TCP/IP on an 8051 - but it will be much easier if you choose a more appropriate processor. (there are plenty of examples online - just get to work with your favourite internet search engine). It is also not necessary to have an RTOS - but it may well help your TCP/IP implementation. However, again, an RTOS on an 8051 is not generally a great idea...
http://www.keil.com/tcpip/
RFC1180 is a TCP/IP tutorial: http://www.faqs.org/rfcs/rfc1180.html
I don't think it is a good idea that runing the uc/os in at89c52. There is less RAM for UC/OS.