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 | | Re: your mail
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| (...) Very confusing, especially since at the beginning of the same file, there are the lines: * Setup Interrupt for Encoders * LDX #BASE BSET TCTL2,X %00001100 /* Interrupts TIC3,TIC2 rising edge*/ BCLR TFLG1,X %00000010 /* Clear IC3,IC2 Flags */ (...) (28 years ago, 28-Jun-96, to lugnet.robotics.handyboard)
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mask
(score: 1.796)
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| | timer flags
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| The timer flags are cleared by either loading the accumulator with the bits you want cleared and then storing them in the timer flag register, or by using BCLR with a complemented mask. -Dirk "I speak from experience" (28 years ago, 29-Jun-96, to lugnet.robotics.handyboard)
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mask
(score: 1.796)
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| | Shaft Encoders
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| (...) Hello, I'm new to the Handy Board mailing list. I have been browsing through the archives and I saw the discussion regarding shaft encoders. I haven't seen anyone use the technique I've used rather well. Like the thread suggests, I've tried (...) (28 years ago, 18-Aug-96, to lugnet.robotics.handyboard)
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mask
(score: 1.787)
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| | Wheel Shaft Encoders
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| (...) Hello, I'm new to the Handy Board mailing list. I have been browsing through the archives and I saw the discussion regarding shaft encoders. I haven't seen anyone use the technique I've used rather well. Like the thread suggests, I've tried (...) (28 years ago, 18-Aug-96, to lugnet.robotics.handyboard)
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mask
(score: 1.787)
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| | Re: Digit outputs....
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| Rather than trying to figure out the hex for the bits, I use the IC binaray number format, "0b". I set the bits using a binary mask, for example, to set the MOSI pin high, I use: bit_set(0x1008, 0b00001000) then to set the MOSI pin low, I use: (...) (28 years ago, 20-Feb-97, to lugnet.robotics.handyboard)
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mask
(score: 1.755)
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| | Question on Kent Farnsworth's IR routine?
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| On the Handyboard software archive, Kent has the following port definitions in the file HB2_EQ.ASM: * equates for Sharp IR sensors -- start at port 4 IR_MASK_ZERO EQU %00000100 IR_ADDR_ZERO EQU $1000 /* port A */ IR_MASK_ONE EQU %00100000 (...) (27 years ago, 26-Apr-97, to lugnet.robotics.handyboard)
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mask
(score: 1.748)
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| | Re: motor routines in lib_hb.c
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| (...) These 8 bit masks are the most symmetrical way to to organize speeds of 0 through 7/7. You could rewrite the code to accept a byte and use that as the mask, but unless you think it would save space, it's a waste of time. The miniboard routines (...) (27 years ago, 14-Apr-97, to lugnet.robotics.handyboard)
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mask
(score: 1.745)
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| | Re: Vector 2x giving me lots of trouble...
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| (...) Yes, I had this problem also. (...) That is a good idea but there's no reason to put the compass into Slave mode to do it. According to the Vector docs while the compass is in Master mode you can either hold P/C low for continuous sampling or (...) (27 years ago, 2-Jun-97, to lugnet.robotics.handyboard)
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mask
(score: 1.736)
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| | Re: System Interrupts & frequency counting
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| (...) I'm unfamiliar with the workings of IC, but if your interrupt service routine is sufficiently short, and you don't reset the interrupt mask to enable recursive interrupts, you shouldn't notice the difference. You asked if there was a more (...) (27 years ago, 9-Jun-97, to lugnet.robotics.handyboard)
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mask
(score: 1.736)
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| | Re: voice synthesis
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| (...) Actually Radio Shack didn't lie, the chips Jeff are referring to are the SP0256 Allophone synthesizer from General Instrument and the CTS244 text to speech processor, also from GI. The CTS244 was actually a mask programmed PIC chip but it (...) (27 years ago, 1-Jul-97, to lugnet.robotics.handyboard)
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mask
(score: 1.732)
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| | Re: bit_set and Poke
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| bit_set in english is "for the byte at this adress, make these bits high". The first argument is the address (i.e. 0x0e). The second argument is the mask which indicates which bits to make high. bit_clear in english is "for the byte at this address, (...) (27 years ago, 12-Nov-97, to lugnet.robotics.handyboard)
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mask
(score: 1.709)
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| | Re: what is poke and peek command
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| (...) <snip> The poke command writes a byte (eight bits) into memory. The peek command reads a byte from memory. The bit_set command turns on the specified bits of a byte in memory, but leaves the other bits unaffected. An integer constant that (...) (26 years ago, 7-Aug-98, to lugnet.robotics.handyboard)
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mask
(score: 1.662)
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| | WARNING: +5 supply exposed
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| Take a moment to look at your Handy Board. There is a thick trace along the top, right and bottom edge. This is your regulated +5 line. Now look very closely at the outer edge of this trace. It should be completely green (covered with solder mask). (...) (26 years ago, 12-Sep-98, to lugnet.robotics.handyboard)
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mask
(score: 1.655)
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| | WARNING: +5 supply exposed
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| Take a moment to look at your Handy Board. There is a thick trace along the top, right and bottom edge. This is your regulated +5 line. Now look very closely at the outer edge of this trace. It should be completely green (covered with solder mask). (...) (26 years ago, 12-Sep-98, to lugnet.robotics.handyboard)
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mask
(score: 1.655)
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| | motor code questions
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| Hi, I got my Handyboard up and going and was trying the following code for driving my motors. (Figure I would try known code before forking out on my own). The code I got from the 'Inspiration to implemntation' book. Anyways it does not seem to (...) (26 years ago, 2-Dec-98, to lugnet.robotics.handyboard)
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mask
(score: 1.650)
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| | Re: motor port problem .
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| Philip In a message dated 98-11-19 21:05:04 EST, you write: << hi, I have a big problem. I followed the method of yours that just lift up pin 8 of one L293 and wirewrapped it. The positive supply is wirewrapped to pin 8 . How about the negative (...) (26 years ago, 20-Nov-98, to lugnet.robotics.handyboard)
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mask
(score: 1.643)
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| | Re: legOS (-> Interdisciplinary Learning?)
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| A simpler way to look at this is to say a message consists of 8 bits (hece 0-255) Bit 1 = team 0=prey 1=predator (High Bit) Bit 2 = state, 0=mobile 1=active Bit 3 = light Bit 4 = Touch Bit 5 = Compound RCX Bit 6 = Inquire/Respond Bits 7 and 8 = bot (...) (26 years ago, 1-Dec-98, to lugnet.robotics)
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mask
(score: 1.641)
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| | Re: Out of range
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| Hi, I have some code that does this but it get kind of complicated to explain but here goes.... 1. I have a separate thread in my (C++) app that is used to poll the cybermaster variables. I can set which variables to check under program control. 2. (...) (26 years ago, 10-Dec-98, to lugnet.robotics)
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mask
(score: 1.640)
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mask
(score: 1.640)
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mask
(score: 1.640)
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