Re: Serial camera - Issues connecting

I don't see anything glaringly wrong with the serial port handling, It is difficult to be sure without seeing the tpj4.cfg file though. Have you tried terminating the commands with a \n instead of \r? Or without the \r? Sometimes things expect unusual command terminators.

As an aside:

$FrameNum = substr($ResultUnpacked, 6,2);
$FrameHex = '0x' . $FrameNum;
$FrameNum = eval $FrameHex;
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could be more succinctly written as:

$FrameNum = hex substr($ResultUnpacked, 6,2);
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Also, you should probably drop the '0x.' from your $Ack pack $FrameNum field. It doesn't do anything. It is just being silently ignored.

my $Ack = pack( 'C*', 0xaa, 0x0e, 0x0d, $FrameNum, 0x00, 0x00);
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instead of

my $Ack = pack( 'C*', 0xaa, 0x0e, 0x0d, 0x.$FrameNum, 0x00, 0x00);
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UPDATE: Do you need to send more SYNC commands to the camera? The docs state that it requires 25 to 60 SYNC commands before it will issue an ACK.

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Re^2: Serial camera - Issues connecting by SquareJ (Novice) on Feb 15, 2012 at 00:52 UTC
Thanks Thunder, will streamline the code as you suggested. On the syncs, i repeat all the commands until i get the expected success code as passed in as the second parameter sent to sub SendCommand. I need to limit the number of retries but figure that will be a later addition, also will be adding something to power cycle the camera if i get to 60 with no success. Here is the config file, wondering if the handshake part is failing, i have tried RTS, XOFF, DTR and none they dont seem to make a difference. I have no experience with this level of serial so thanks for taking a look. Win32::SerialPort_Configuration_File -- DO NOT EDIT -- \\.\COM4 CFG_1,none eol,10 clear,-@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ +@@@@@@@@@@@@@- RCONST,1000 istrip,0 CFG_2,none XOFFCHAR,19 PARITY_EN,0 WCONST,200 intr,3 U_MSG,1 STOP,1 XONLIM,2048 erase,8 XONCHAR,17 BINARY,1 RTOT,0 echonl,0 XOFFLIM,512 icrnl,0 inlcr,0 READBUF,4096 igncr,0 EOFCHAR,0 WRITEBUF,0 RINT,4294967295 ocrnl,0 bsdel, opost,0 echoke,1 PARITY,none HNAME,localhost echoctl,0 CFG_3,none EVTCHAR,0 icanon,0 isig,0 HADDR,0 E_MSG,1 DATA,8 DVTYPE,none echo,0 quit,4 s_eof,26 s_kill,21 ERRCHAR,0 onlcr,1 ALIAS,COM4 HSHAKE,none DATYPE,raw echok,1 echoe,1 BAUD,57600 WTOT,10 [download]	[reply] [d/l]
Re^3: Serial camera - Issues connecting by SquareJ (Novice) on Feb 15, 2012 at 03:12 UTC
OK, after pulling my hair out on this i tried simply sending 30 sync commands in a row, one pack command with 30 iterations all at once then started the normal sync and other commands. This worked! Purely a guess that it took many characters for the serial port and cam to sync baud?? but its working. The confusing part was that after the first couple of syncs i would get an ACK but then subsequent commands, like set picture size, would never get a response. Thunder, the shortcut to find the frame num with hex worked great, removing the leading 0x's did not, complained at runtime. Appreciate you looking at this for me.	[reply]