 | | RE: Multitasking (fwd)
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I duno... I fergot. Sorry. :( It was a long time ago (milage-wise). I didn't use that method of mutitaking anymore and I didn't save the old code. But, I don't think so, I can't imagine that would be my style. I would set a global variable from (...) (26 years ago, 12-Apr-98, to lugnet.robotics.handyboard)
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| | 16 digital outputs as Fred suggested
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Hi guys, I needed 16 digital outputs for my handyboard, so I put up a very simple expansion board the way Fred suggested in his handboard FAQ: I connected two more hc374 with their d-inputs to LCD-display's data bus (d0 - d7). Then I connected the (...) (26 years ago, 12-Apr-98, to lugnet.robotics.handyboard)
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| | Rere: Smooth PWM in IC 3.1?
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At 08:17 PM 4/11/98 -0600, I wrote: <snip> (...) <snip> Correction: You'll also need Julian's lib_hb.c to go with it. Again, rename your current version first so you don't overwrite it. Put the new one in the libs directory where the old one was, (...) (26 years ago, 12-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Smooth PWM in IC 3.1?
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(...) Yes, it is possible. It must be, 'cause I've been doing it. You simply need to download Julian's pcode_hb.s19 (rename your other one first) and put it in the IC31\libs directory (or whatever you call it). IC 3.1 ought to automatically load it (...) (26 years ago, 12-Apr-98, to lugnet.robotics.handyboard)
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| | Re: SPI?
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(...) this is correct... (...) but this is not. the Handy Board communicates with the desktop computer using the SCI: serial communications interface. The SPI is for high speed (up to 1 megabaud) sychronous (i.e., separate clock signal) transfer to (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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| | Re: SPI?
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(...) What Hacker said, but also, there's a 2x4 female SPI header on the HB just above the power jack that allows you to hook up other serial devices to the HB (like other HB's, memory, etc.) It's shown in the HB Tech. Reference and there are (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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| | Smooth PWM in IC 3.1?
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I apologize for asking a question I think I've seen answered, but I can't find it in the mail archives. Is it possible to use Julian Skidmore's smooth PWM routines with Newton Labs' commercial IC 3.1? Since they use a different version of pcode.s19 (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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| | RE: Multitasking (fwd)
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Does your while loop have a break(); statement. I have an idea that this may be necessary in some situations. -----Original Message----- From: MAR ERICSON [SMTP:mar@cooper.edu] Sent: Monday, 6 April 1998 8:46 To: Handy Board mailing list Subject: (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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| | Re: SPI?
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CLANCY, It is the Serial Periperal Interface Handles Serial Data transmission out/in the 68HC11. I.E.the Handy Board uses an SPI for downloading data from the Desktop machine. (...) Charles Hacker School of Engineering Griffith University - Gold (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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| | Re: setting an output
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You mean SPI outputs? Yes, check the HB HP FAQ under something like... "...digital outputs...?" ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The (...) (26 years ago, 11-Apr-98, to lugnet.robotics.handyboard)
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