Subject:
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Re: Communicating with Cybermaster not easy
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 25 Jan 1999 23:56:14 GMT
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Original-From:
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Kay Neuenhofen <Kay.Neuenhofen@Eng%stopspam%.Sun.COM>
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Viewed:
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2625 times
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Sten,
your problem is probably the following:
you need to send the complement of the checksum as well,
so the complete packet would look like this:
0x55 0xFF 0x00 0x10 0xEF 0x10 0xEF
> I am sending a byte sequence like the following:
> 0x55 0xFF 0x00 0x10 0xEF 0x10
> where the three first bytes are the header,
> 0x10 is data and 0xEF is complimentary to 0x10
> and the last 0x10 is checksum (sum of all data mod 256)
>
> The light on the rcx radio tower is blinking when I send the data
> but the light on the rcx is not blinking as it should when receiving data.
>
> I get nothing back to th PC.
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | Re: Communicating with Cybermaster not easy
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| Again: The low-level packet headers are _not_ the same for the RCX and the CyberMaster. (See (URL) for the RCX details) This is the CyberMaster settings: The serial port should have the same settings as was for the RCX, as originally described by (...) (28 years ago, 26-Jan-99, to lugnet.robotics)
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