 | | Re: pbLua PCF8574 SOLVED ?
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(...) Hi, or was it a quirk at my brain to address the i2c-read-address and hope to receive usefull data ? Currently it works for me when using allways the i2c-write address... Are the any demos or samples for NXC, using the PCF8574 ? 1. setting (...) (17 years ago, 21-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: pbLua PCF8574 SOLVED
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(...) Hi, we solved the problem... Lego-Firmware has own brain and handle read/write with own mechanisms ;-( The last read/write bit is handled automatically by lowlevel routines. Reading the same address like writing solves the problem. (...) (17 years ago, 21-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | RE: NXT Programming with C Question
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(...) Ralph and Brian have provided good input that parallels my experience. Here's a little more information. If you have access to the IAR tools you can compile the NXT firmware available in the NXT SDK from LEGO "out of the box". I believe there (...) (17 years ago, 20-May-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: pbLua Hardware access
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(...) All the nice IO-Ports of the ARM-CPU, which are connected to external ports :D But now I think, we did not need it any more. You are fast enough with your development and responses. Forget Peek and Poke from good old C64 times ;-) Thanks a lot (...) (17 years ago, 19-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: pbLua PCF8574
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(...) Hi Ralph, we are using this code: collectgarbage( "setpause", 110 ); function setupI2C(port) nxt.InputSetType(port,2) nxt.InputSetDir(port,1,1) nxt.InputSetState(port,1,1) nxt.I2CTimer(3) nxt.I2CInitPins(port) end function ReadPCF(port) (...) (17 years ago, 19-May-07, to lugnet.robotics.nxt, lugnet.robotics.nxt.nxthacking)
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| | Re: NXT Programming with C Question
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(...) Hi there, Thanks for venturing those reasons. I had been thinking that with the release of the NXT firmware that there may be options to compile code that worked directly with the firmware. Cheers (17 years ago, 19-May-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: NXT Programming with C Question
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(...) Hi Thanks for the fast response, I think I'll have a look at the pbLua firmware. What I am working towards is a method of running Haskell programs on the NXT by converting to C bytecodes first. (17 years ago, 19-May-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: NXT Programming with C Question
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(...) I suspect it could, but I'm not sure that's an approach you want to take. For one thing, there's the question of how to address and handle all the special HW that is attached to the ARM inside the NXT... and furthermore communicate with the (...) (17 years ago, 19-May-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: NXT Programming with C Question
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(...) There's no reason you can't compile straight ANSI C and run it on the NXT. I was doing it last year and ran an ATMEL sample program that turned the NXT into the world's most expensive 256K (not M) Flash drive :-) The hard part is using the (...) (17 years ago, 19-May-07, to lugnet.robotics.nxt.nxthacking)
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| | NXT Programming with C Question
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Hi there: I've been trying to find a method of coding the NXT using C, however the existing languages available, such as RobotC, or NBC/NXC etc all seem to be C-like languages and not ANSI C. This seems to be the trend, but does anyone know why (...) (17 years ago, 19-May-07, to lugnet.robotics.nxt.nxthacking)
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