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micronut
Newbie

Joined: 03/09/2014
Location: United States
Posts: 37

Posted: 11:37am 01 Nov 2014

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I have this code

Option Explicit

CPU 48
LCDLightOn

'
'C:\CFunctions\BAS\lcdlighton.bas

'
'lcdlighton 2014-11-01 17:24:29 CFuncGen Ver 1.0.16 by user=Brian
'
CFunction lcdlighton
00000000
3c02bf88 8c436114 34630001 ac436114 8c436138 34630001 ac436138 03e00008
00000000
End CFunction

'
'lcdlightoff 2014-11-01 17:24:29 CFuncGen Ver 1.0.16 by user=Brian
'
CFunction lcdlightoff
00000000
3c02bf88 8c436114 34630001 ac436114 8c436134 34630001 ac436134
03e00008 00000000
End CFunction
End

And I get
[4] LCDLightOn
Error: Unknown Command

Here is the C Code

/*
* File: LCDBackLight.c
* Author: Brian
*
* Created on November 1, 2014, 2:21 PM
*/

#include <plib.h>

#define BL_High *(volatile unsigned int *)0xbf886138 |= (1 << 0);
#define BL_Low *(volatile unsigned int *)0xbf886134 |= (1 << 0);
#define BL_Out *(volatile unsigned int *)0xbf886114 |= (1 << 0);

/*
*
*/

void lcdlighton(void){
BL_Out;
BL_High;
}

void lcdlightoff(void){
BL_Out;
BL_Low;
}

long long main() {}

What am I doing wrong?Edited by micronut 2014-11-02

G8JCF

Guru

Joined: 15/05/2014
Location: United Kingdom
Posts: 676

Posted: 11:40am 01 Nov 2014

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You must assign the result of your CFunction to a 64 bit variable, eg

Result%=lcdlighton

Result%

Your CFunction MUST return a 64 bit integer, eg long long lcdlighton(){....}

Peter

The only Konstant is Change

Geoffg

Guru

Joined: 06/06/2011
Location: Australia
Posts: 3167

Posted: 12:59pm 01 Nov 2014

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Also, it needs a dummy argument otherwise MMBasic will think that it is a variable:
Result% = lcdlighton(0)

Geoff Graham - http://geoffg.net

G8JCF

Guru

Joined: 15/05/2014
Location: United Kingdom
Posts: 676

Posted: 01:19pm 01 Nov 2014

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To follow on from Geoff's comments, the CFunction code could look like

/*
* File: LCDBackLight.c
* Author: Brian
*
* Created on November 1, 2014, 2:21 PM
*/

#define BL_High *(volatile unsigned int *)0xbf886138 |= (1 << 0);
#define BL_Low *(volatile unsigned int *)0xbf886134 |= (1 << 0);
#define BL_Out *(volatile unsigned int *)0xbf886114 |= (1 << 0);

unsigned long long lcdlighton(){
BL_Out;
BL_High;
return 0;
}

unsigned long long lcdlightoff(){
BL_Out;
BL_Low;
return 0;
}

void main() {}

Then in MMBasic

OPTION EXPLICIT

CPU 48

DIM Result%

Result%=LCDLightOn(0)

END

'
'K:\Programming\PICProgramming\Micromite\UserSupport.X\dist\ default\production\lcdlighton.bas
'
'lcdlighton 2014-11-01 23:30:23 CFuncGen Ver 1.0.16 by user=Peter
'
CFUNCTION lcdlighton
00000000
27bdfff8 afbe0004 03a0f021 3c02bf88 34426114 3c03bf88 34636114 8c630000
34630001 ac430000 3c02bf88 34426138 3c03bf88 34636138 8c630000 34630001
ac430000 00001021 00001821 03c0e821 8fbe0004 27bd0008 03e00008 00000000
END CFUNCTION

'
'lcdlightoff 2014-11-01 23:30:23 CFuncGen Ver 1.0.16 by user=Peter
'
CFUNCTION lcdlightoff
00000000
27bdfff8 afbe0004 03a0f021 3c02bf88 34426114 3c03bf88 34636114 8c630000
34630001 ac430000 3c02bf88 34426134 3c03bf88 34636134 8c630000 34630001
ac430000 00001021 00001821 03c0e821 8fbe0004 27bd0008 03e00008 00000000
END CFUNCTION

VERY IMPORTANT - NO SPACE allowed between LCDLightOn and (0), ie it MUST be LCDLightOn(0)

@Geoff, is that fixable in 4.6 ?

Give that a whirl, hopefully it will work !

PeterEdited by G8JCF 2014-11-02

The only Konstant is Change

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