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forum.gifForum - iziBasic - Topic #1621

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iziBasic - iziBasic


Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 257

active  Topic # 1621  Use C code in an iziBasic program?

20/09/2008 @ 19:44
by Ashley

Anonymous
I would like to use the following code in an iziBasic app. How should I do this?

#include <PalmOS.h>
#include <SerialMgrOld.h>
#include "midi.h"

UInt16 midiSerLib;
Err midiSerError;

/*********************************************************************/
/*********************************************************************/
void OpenMidiPort(void)
{
/* open port */
SysLibFind("Serial Library", &midiSerLib);
midiSerError = SerOpen(midiSerLib, 0, 31250);
/* delay for half second to allow the port to be set up properly */
SysTaskDelay(SysTicksPerSecond() >> 1);
}

/*********************************************************************/
/*********************************************************************/
void CloseMidiPort(void)
{
/* close the port only if we need to */
if (midiSerError == 0 || midiSerError == serErrAlreadyOpen)
SerClose(midiSerLib);
}

/*********************************************************************/
/*********************************************************************/
void SendMidi(UInt8 a, UInt8 b, UInt8 c, UInt8 size)
{
/* MIDI has up to three bytes per message. Size is the number of bytes to send.
The value of the unused messages doesnt matter, and i usually give it 0xFF */
Err err = 0;
UInt8 midiBuf[3] = {a, b, c};

SerSend(midiSerLib, midiBuf, size, &err);
if (err)
SerClearErr(midiSerLib);
}

/*********************************************************************/
/*********************************************************************/
void MidiPanic(void)
{
/* super-mega all notes off, adapted after the messages cakewalk sends. */

UInt8 i;

for (i = 0; i < 16; i++) {
SendMidi(0xE0 + i, 0x00, 0x40, 3);
SendMidi(0xB0 + i, 0x01, 0x00, 3);
SendMidi(0xB0 + i, 0x07, 0x7F, 3);
SendMidi(0xB0 + i, 0x0A, 0x40, 3);
SendMidi(0xB0 + i, 0x40, 0x00, 3);
SendMidi(0xB0 + i, 0x42, 0x00, 3);
SendMidi(0xB0 + i, 0x43, 0x00, 3);
SendMidi(0xB0 + i, 0x79, 0x00, 3);
SendMidi(0xB0 + i, 0x7B, 0x00, 3);
}
}

void OpenMidiPort(void);
void CloseMidiPort(void);
void SendMidi(UInt8 a, UInt8 b, UInt8 c, UInt8 size);
void MidiPanic(void);


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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 497
Answer n° 1
--------
21/09/2008 @ 20:28
by aldweb

Anonymous

visitor
 Hello Ashley,

You can very well use the functions provided by this code in an iziBasic application. You will just have a little bit of work to do.

The answer is to use a so-called "PP applet" (see iziBasic's user manual).

This C code will basically have to be translated to a PP code, not forgetting to retrieve those of the API functions calls (from the C headers PalmOS.h, SerialMgrOld.h and midi.h) used in this source code.

Since Pascal is quite close from C, this translation will be very easy (for those used to read C source codes and accustomed to the Pascal structure).

I wish I had some free time and access to a PC in the next days to do the job for you. Do you feel confident doing it yourself?

Cheers,
aldweb
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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 497
Answer n° 2
--------
22/09/2008 @ 20:09
by Ashley

Anonymous

visitor
 I am not confident about tranlsating this to PP. If you could help that would really useful!

Thanks. Ashley.
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Warning: A non-numeric value encountered in /web5/aldweb/www/aldweb_com/www/thread.php on line 497
Answer n° 3
--------
28/09/2008 @ 19:08
by aldweb

Anonymous

visitor
 Hello Ashley,

For a series of reasons, I will not be in the capacity to do the job in the coming 2 months or so... Can you wait that long?

Anyway, drop me the C files by e-mail (including the .h ones) so that I can try to work on this conversion during some spare time...

Cheers,
aldweb
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