Subject:
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Spybot Studies: display an 8-bit value
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Newsgroups:
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lugnet.robotics.spybotics
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Date:
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Fri, 7 Nov 2003 16:21:11 GMT
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Viewed:
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5753 times
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I feel a little sheepish posting such simple code, but I needed to write this
function anyway, and it's a legitimate illustration of a couple functions, which
is the goal of "Spybot Studies" and this is a run-on sentence.
/*
led_8bit_display
A simple macro to use the 3 red, 3 green, and 1 yellow display LEDs plus
the laser LED to display an 8-bit value as a binary. Useful for debugging.
From LSB to MSB, the order is red display LEDs, green display LEDs,
yellow LED, laser LED.
This study illustrates the use of
SetLED(LED_MODE_ON, x)
SetLED(LED_MODE_YELLOW, x)
SetLIGHT( [LIGHT_ON] | [LIGHT_OFF] )
Now if I could only pass
the parameter on the stack to a subroutine, I wouldn't have to
inline all this code.... :)
I know I've seen someone else do this already, but I can't find the link.
-Brian Alano
*/
#include "spy.nqh"
#define SetLEDBinary(x) SetLED(LED_MODE_ON, x); \
SetLED(LED_MODE_YELLOW, (x >> 6) & 0x01) ; \
if ( x & 0x80) { SetLight(LIGHT_ON); } \
else { SetLight(LIGHT_OFF); }
task main()
{
int i;
for (i=0; i < 256; i++)
{
SetLEDBinary(i);
Wait(3);
}
}
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Message has 2 Replies:
 | | Re: Spybot Studies: display an 8-bit value
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| (...) Another very simple thing to do to display this type of "debug" information is to send a message to an RCX, and display the value on the LCD of the RCX. That way, you don't need to mess with decoding the 8 bit binary number. This was not my (...) (21 years ago, 7-Nov-03, to lugnet.robotics.spybotics)
| | | Re: Spybot Studies: display an 8-bit value
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| (...) Mark Riley did this using MindScript but I don't recall having already seen the equivalent in NQC. (URL) than use a #define macro (speaking of which, I need to fix the syntax highlighting of preprocessor macros to account for multiple lines) I (...) (21 years ago, 7-Nov-03, to lugnet.robotics.spybotics)
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