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List: freedesktop-dbus
Subject: Can not create a array message correctly
From: Alex Bunnett <alexb () fusionelectronics ! com>
Date: 2009-07-22 0:46:30
Message-ID: 874BC60C3E06E846AFE3875EB3094459079AE7DABA () fusnz01 ! fusion ! local
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Sorry to keep posting about this Problem but I can not find a solution for this \
problem.
I am unable to send a byte message across the bus correctly!
This is the methods I am creating the message with and reading with.
Can you see any problems?
When I read the message out I get the correct type and length but data is incorrect
Creating....
message = dbus_message_new_method_call(CLIENT_SEND_NAME, CLIENT_SEND_OBJECT, \
SEND_INTERFACE_SERVER, "servermessage");
if(message == NULL)
{
__ALEX("Message NULL cant send");
return 0;
}
DBusMessageIter iter, sub;
dbus_message_iter_init_append(message, &iter);
char buf[2];
buf[0] = DBUS_TYPE_BYTE;
buf[1] = '\0';
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, buf, &sub);
if(!dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &pBuff, len))
{ dbus_message_unref(message);
return 0;
}
dbus_message_iter_close_container(&iter, &sub);
if(!dbus_connection_send(_connection, message, &serial))
{
dbus_message_unref(message);
return 0;
}
dbus_connection_flush(_connection); // force message to be sent now
Reading.....
DBusMessageIter args1, subiter;
if (!dbus_message_iter_init(message, &args1))
{
dbus_message_unref(message);
}
if ( dbus_message_iter_get_arg_type(&args1) == DBUS_TYPE_ARRAY)
{
int maxlen = 100;
uint8_t pBuff1[100];
dbus_message_iter_recurse (&args1, &subiter);
dbus_message_iter_get_fixed_array(&subiter, &pBuff1, \
&maxlen); // this is incorrect not what I wrote in }
Thanks for your times
[cid:image001.jpg@01CA0ACA.0B1C5C40]<http://www.fusioncaraudio.com/>
Alex Bunnett
Embedded Software Engineer
Ph: +64-9-369-2900
DDI: +64-9-369-2940
Fax: +64-9-369-2907
Email: alexb@fusionelectronics.co.nz<mailto:alexb@fusionelectronics.co.nz>
Website: http://www.fusionelectronics.com
The information in this email and any attachments is confidential. This information \
may be subject to legal, professional, or other privilege. It must not be disclosed \
to any person without our authority. If you are not the intended recipient you are \
not authorised to and must not disclose, copy, distribute, or retain this message or \
any part of it. Please return this message to the sender immediately and delete any \
and all copies from your system.
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<div class=Section1>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Sorry to keep posting about this Problem but I can not find
a solution for this problem.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am unable to send a byte message across the bus \
correctly!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>This is the methods I am creating the message with and
reading with.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Can you see any problems?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>When I read the message out I get the correct type and
length but data is incorrect<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Creating….<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> message =
dbus_message_new_method_call(CLIENT_SEND_NAME, CLIENT_SEND_OBJECT,
SEND_INTERFACE_SERVER, "servermessage");<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> if(message == \
NULL)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> {<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
__ALEX("Message NULL cant send");<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
return 0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> }<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> DBusMessageIter iter, \
sub;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> dbus_message_iter_init_append(message,
&iter);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> char buf[2];<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> buf[0] = \
DBUS_TYPE_BYTE;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> buf[1] = '\0';<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, buf, \
&sub);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>
if(!dbus_message_iter_append_fixed_array(&sub, DBUS_TYPE_BYTE, &pBuff,
len))<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
{ \
dbus_message_unref(message);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
return 0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> }<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>
dbus_message_iter_close_container(&iter, &sub);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> if(!dbus_connection_send(_connection,
message, &serial))<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> {<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
dbus_message_unref(message);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
return 0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> }<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> dbus_connection_flush(_connection); //
force message to be sent now<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Reading…..<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>DBusMessageIter args1, subiter;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
if (!dbus_message_iter_init(message, &args1))<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
{<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
dbus_message_unref(message);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> \
}<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> if ( dbus_message_iter_get_arg_type(&args1)
== DBUS_TYPE_ARRAY)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> \
{<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> \
int maxlen = 100;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> \
uint8_t pBuff1[100];<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> \
dbus_message_iter_recurse (&args1, &subiter);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> \
dbus_message_iter_get_fixed_array(&subiter, &pBuff1, &maxlen); // this is \
incorrect not what I wrote in<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> \
}<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>Thanks for your times<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<table class=MsoNormalTable border=0 cellpadding=0 width=1269 style='width:
951.9pt;margin-left:-9.05pt' summary="">
<tr>
<td width=1236 colspan=2 style='width:926.95pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><a href="http://www.fusioncaraudio.com/"><font
color=black><span style='color:windowtext;text-decoration:none'><img
border=0 width=222 height=71 id="_x0000_i1025"
src="cid:image001.jpg@01CA0ACA.0B1C5C40" \
NOSEND=1></span></font></a><o:p></o:p></span></font></p> </td>
<td style='border:none;padding:0cm 0cm 0cm 0cm' width=27><p \
class='MsoNormal'> </td> </tr>
<tr>
<td width=13 style='width:9.55pt;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</td>
<td width=1250 colspan=2 style='width:937.85pt;padding:.75pt .75pt .75pt .75pt'>
<div>
<div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>Alex Bunnett</span></font></b><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Embedded Software Engineer</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Ph: +64-9-369-2900<br>
DDI: +64-9-369-2940</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Fax: +64-9-369-2907<br>
Email: <font color=blue><span style='color:blue'><a
href="mailto:alexb@fusionelectronics.co.nz">alexb@fusionelectronics.co.nz</a></span></font></span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><br>
</span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Website: <u><font color=blue><span \
style='color:blue'>http://www.fusionelectronics.com</span></font></u></span></font><font
size=2 color=black face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:black'><br>
<br>
</span></font><font size=2 color=black face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;color:black'>The information in this email and any
attachments is confidential. This information may be subject to legal,
professional, or other privilege. It must not be disclosed to any person
without our authority. If you are not the intended recipient you are not
authorised to and must not disclose, copy, distribute, or retain this message
or any part of it. Please return this message to the sender immediately and
delete any and all copies from your system.</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
</div>
</div>
</td>
</tr>
<tr height=0>
<td width=16 style='border:none'></td>
<td width=1223 style='border:none'></td>
<td width=30 style='border:none'></td>
</tr>
</table>
<div>
<p class=MsoNormal style='margin-left:-7.5pt'><font size=3
face="Times New Roman"><span lang=EN-US \
style='font-size:12.0pt'> </span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
</body>
</html>
["image001.jpg" (image/x-citrix-jpeg)]
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