Serial Port for Palm

Hi:
I have a little school project and need to use a Palm device serial port. The only problem is that it seems serial port implementation is only available for MIDPv2.0 and for Palm there's just an implementation for MIDPv1.0. I wonder if anyone knows if there's a sollution to this problem or other way to get to use serial port through MIDVPv1.0.
Thanks.
Alex

You can get the adaptor at just about any computer store. Its called a serial to USB adaptor. There should also include a disk or have a download of some kind for the driver of the device. Now this may or may not work due to the m100 was not designed for a USB connection. Others on this site have tried what you are doing. Here is a link after searching for serial to USB adaptor: http://forums.palm.com/palm/search?submitted=true&q=serial+to+USB+adaptor

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Inconsistent prob when adding listeners to serial ports for sending AT cmds

I have an app that sends and receives SMSs from two different cell phone carriers (lets say verizon and sprint by example).
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I attach the code if you can help me,
thank you,
fernando
// class fields
private static String PORT_CARRIER1;
private static String PORT_CARRIER2;
private static CommPortIdentifier portId;
private static Enumeration portsList;
private static SerialPort carrier1SP;
private static SerialPort carrier2SP;
private static InputStream carrier1_input;
private static InputStream carrier2_input;
private static OutputStream carrier1_output;
private static OutputStream carrier2_output;
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Thinking of a java application as its what I am most
comfortable with, but also thinking of having an
apache server, and using jsp pages or servlets...
because I hate formatting things in a java frame..
have never quite mastered that! Any thoughts on what
I should use?I'd prefer a Swing GUI for a maximum of controls. If you have any problems regarding layout, you can post concrete questions here (or even better: the Swing forum).
And my main stumbling block would be how do I send
signals to the green light from the computer? How do
I get signals from the light beams to the computer?
How do I use a serial port (for eg) from a java app.There's an additional library for serial I/O, it's named javax.comm ... should be downloadable somewhere on the java.sun.com site.

Hello Forum, you need a serial ports for software icprog to program EPROM and Pic

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THANK Joe

Unfortunately, no Sanyo phones are iSync compatible so you will not be able to synchronize your Contacts and Calendars with the phone.
Also, you may have problems with the Bluetooth adapter you purchased, as the only one officially supported by Apple for use with Macs is the D-Link DBT-120.
The Official Apple list of iSync compatible devices is here:
http://www.apple.com/macosx/features/isync/devices.html
It's always a good idea to check this list before purchasing a new phone.
Other phones are supported by third party plugins from here and here. But still no Samsung, Sanyo, LG etc. who all use thier own proprietary syncing protocols rather than the industry standard SyncML. These manufacturers also don't provide Mac software with their phones like the do for Windows users.
I'm afraid you're not going to have much luck if you stick with the Sanyo. I would seriously consider taking it back and swapping it for one of the handsets on the above linked pages. Personally I would recommend a Sony Ericsson model. I've always had excellent Mac compatibility with those.

Just purchased Wndows Vista and having problems with the port for Palm 125

I just purchased a Windows Vista computer and having problems with getting my Palm 125 to sync with the desktop. I get an error message saying: "Com1 not available" What do I do?
Thanks,
Frustrated
Post relates to: Palm m125
This question was solved.
View Solution.

Sorry, that didn't work. I get no drop down menu from the Hot Sync Manager for the Serial Port. What comes up often is: "The selected port, COM1, is not available at this time. Hot Sync Manager will open the port when it becomes available."
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Post relates to: Palm m125

Serial port for an alarm system

I have an alarm system set to receive inputs from LabVIEW-controlled digital I/O cards. All the digital ports are fully utilized for data input. When an alarm state is reached, we would like to use the serial port to relay the alarm condition to a global monitoring system. I don't know if the serial ports can accomplish this as the global monitoring system typically looks for a dry contact or a relay to be tripped. What are the capabilities of the serial port along these lines? Can I have it set to constantly send a 5V signal of dummy data and then drop that data transmission when the alarm condition is reached?

RS-232 can be +-12V or more depending on how the physical drivers are configured. However, if you can handle these voltages, then you can simply assert or deassert one of the modem control lines (RTS or DTR) to indicate your alarm state. If you want to use the TX line, you can set and clear the break condition. If you hook up a multimeter to one of these signals and experiment with NI-VISA in LabVIEW, you should be able to create a signal that will work in your system.
However, if you need +5/GND, you can use an RS-485 port which generates (well, in a way) signals between 0 and 5V (or 0 and 3.3V depending on the system). RS-485 is a differential signaling system, but you can just throw away one of the lines. In this case you'll use TX+, TX-, RTS+, or
RTS- depending on what you need.

Using Serial Port for Non-Serial Data Acquisiton

I searched the forums and couldn't find anything related to this topic.
I saw that it was possible to use the parallel port for simple digital I/O and I was hoping the serial port can be configured the same. It seems all the VISA VI's only want to use the serial port to recieve ASCII chars at a given baud rate, but is it possible to simply poll the status of the serial line at my own speed to see if it is high or low, kind of like a single pin DAQ?
It seems it would be possible as long as the serial data is read and controlled by labview and not by Windows. Let me know if you have any ideas how to approach this problem, or any feedback as to why it is not possible.
Thanks everyone!
Solved!
Go to Solution.

Select Property>Serial Settings>Modem Line Settings. For example, the CTS State is an input to the pc.
Using these lines is a very poor replacement for a scope or DAQ board. The only things you can get back is Asserted, Unasserted, or Unknown. The range of acceptable signals is quite large. Anything between +3 and -3 is an unknown state. Your other signals are +/3 to 15 volts. what kind of signals do you actually want to capture?
edit: There is no such thing as VISA Status so I have no idea what you are actually using.
Message Edited by Dennis Knutson on 07-20-2009 11:09 AM

Second serial port for CompactRIO

I would like to reiterate the question posted here.
Is it possible to add a second serial port to a CompactRIO chassis?
Using the FPGA seems like it would not actually be transmitting at RS-232 levels, and using an Ethernet-to-Serial Port converter sounds more promising, but that means having the drivers loaded properly. Are these the only options, and are they even feasible? Having a multi serial port module seems like it would be a nice addition to the CompactRIO suite.

Hi m3nth,
The link involving using the FPGA and digital modules has been successful in the past with many people and like the tutorial says, a big part with this is converting to voltage using a voltage translator. With respect to the ENET option, the link below can be used to direct you to the products that we have that you may want to try to implement multiple serial ports. I've done some research and it appears that there shouldn't be an issue using the converters with a real-time system. When using the ENET converters, keep in mind that it may cause some more latency in your network as opposed to regular serial transmission. If you have any more questions, please let me know. Thanks!
http://sine.ni.com/nips/cds/view/p/lang/en/nid/10043
Regards
Noah R
Applications Engineering
National Instruments

Can we connect xbee to cfp2020 controllers serial port for wireless communication

hi,
i wanna do data aqcuisition using ethernet as well as wireless technologies, for that i wanna use xbee with cpf 2020. is it possible?
thanks in advance

You can do it fine..
I am guessing the wireless modem is really a router as well. When you say wireless do you mean 3g internet or 4g internet or do you mean cable or adsl and a wireless modem router.?? It is just helpful to know what you are talking about by wireless modem or wireless internet.
You have that plugged into ethernet over power (EOP) adapters .. that is great.
Plugged into TV again that is fine.. although I am unclear what or how it is decoding.. is it IPTV??
Now to your specific questions.
Now, is it possible to
a) connect the Time Capsule to the powerline, so it can act as an access point? When connected to this powerline (ethernet) I hope I won't loose speed to the wireless connection
Yes, the TC needs to be bridged..
Go to manual setup of the Airport utility.. click on the internet tab.. go to connection sharing on the bottom of that page.. select off bridge mode.. update the TC.
Now you can plug the TC into the EOP adapter. And it will work as Wireless Access Point.. WAP or short AP.. and switch.
Plug the TV into the TC as well.. that should all work fine.
b) will I be able to connect my digital tv-decoder to the TC without any problems? So the TC is the decoder's "ethernet port"?
Hope this is a bit clear, as English is not my mothertongue...
IPTV can be complicated to setup and exactly how it works will depend on the main router.. sometimes IPTV is only delivered to a specific ethernet port.. in which case the above suggestion will not work.. you can use either internet or the TV.. not both..

What bluetooth serial ports settings for?

While configuring my A2dp stereo headset/handsfree with Lion, i notices that there is an option for editing serial ports for each device. It gives some option to add a profile. Can someone tell me what exactly it is for and how can I use it for my advantage, if any?
Neerav

Well, it seems like I've figured it out. I deleted the pairings (and thus the related serial ports), re-paired (probably not necessary; I probably could've just deleted the serial ports and re-added them), and I haven't had problems since.
It seems that the problems were related to the fact that I renamed the ports to considerably shorter names (i.e. bt-gps instead of PharosiGPS-BT-GPSRFcom-1). I've left both ports with their original names and have had no problems since.
- Mike

How do I create Labview VISA ports for *individual* GPIB instruments using Prologix USB GPIB controller?

Hello,
I'm trying to use a Prologix USB GPIB controller to control GPIB
instruments, and I would like to have a virtual serial (VISA) port for
*each instrument*, as is the case with a normal GPIB controller with a
standard NI driver. However this is not what the Prologix driver
provides -- it provides a single VISA virtual serial port for the
entire controller. To address the instrument with GPIB address 11,
you first send "++addr 11" to the serial port, and then you're talking
to instrument 11. However, this means I have to change all old
Labview programs.
Is it possible to create a "wrapper" function of some kind that will
define a virtual serial (VISA) port for each *instrument* on the
controller? For example, to talk to GPIB instrument 11, call it
ASRL3::11::INSTR, each time it is written to it would have to write to
the virtual serial port of the controller, say ASRL3::INSTR, first "+
+addr 11" and then the command that is sent to it.
A clearer explanation of the difference (i.e. incompatibility), and of
my objective:
1) A normal GPIB controller with NI driver: I go to the NI
Measurement & Instrumentation Panel, under GPIB, and Scan for
Instruments; all the live instruments show up; subsequently when I
want to use Labview programs that use VISA ports, the VISA drop boxes
allow me to choose a different port for each instrument, e.g.
"GPIB0::11::INSTR", "GPIB0::12::INSTR" would be instruments at
addresses GPIB 11 and GPIB 12.
2) The Prologix GPIB controller that plugs into a USB port: In
Labview you get a *single* VISA virtual serial port, ASRL3::INSTR, for
the entire GPIB0 controller. Therefore to address GPIB instrument 11,
you write "++addr 11" to the virtual serial port ASRL3::INSTR, and
then you are communicating with device 11, so you can write and read
ASRL3::INSTR to talk to that device. Then to talk to device GPIB 12,
you write "++addr 12" to the same VISA port, and then you are talking
to that device. The problem is that this requires recoding all
Labview code, whereas I would like to be able to use the same program
either with a normal or with a Prologix GPIB controller. Therefore, I
would like to create code that scans the controller for all GPIB
attached devices and creates VISA ports for all. Such ports, when
written to, would have to first write "++addr DEVICENUM" to
ASRL3::INSTR (i.e. the port of the GPIB-USB controller) where
DEVICENUM is the GPIB address of the instrument corresponding to that
port, and then would have to do a write or read or whatever function
is being done on that instrument VISA port.
I haven't figured out if it is possible to do this easily. Help and
pointers on where to look for hints would be much appreciated. Many
thanks!
Milos

My first impression is that if you don't want to make any changes at all to existing programs is that the wrapper you need is one around VISA. You would need to intercept all of the calls into the NI VISA driver. If you create your own visa32.dll and in there, change the addressing and then call the real VISA driver, you might (repeat, might) get something to work. If this would even work, you still might find that you have to make significant changes anyway. The serial connection is going to be considerably slower, and interface specific functions such as service request handling, bus triggering of multiple instruments, etc., would be difficult to impossible. This would be a lot of work, imho, to just save a couple of hundred dollars over a real GPIB controller. I've seen this Prologix device before and have even used NI's RS-232->GPIB controller. The Prologix intended use to me seems to me more for a hobbyist or very casual user. Of course, I'm used to having multiple GPIB instruments worth 10s/100s of thousands of dollars and the cost of an fully compliant GPIB controller is just lost in the noise.

Kernel Panic when I use Serial Port

Hello,
I have a macbook pro 15" 2.66 Ghz 2009 running Mountain Lion.
I use Serial Ports for communicate with instruments via Matlab or CoolTerm, using bluetooth or USB. After some minute of work, my computer crash for kernel panic.
This is the log file about a crash with matlab and bluetooth, someone can help me?
Thanks in advance
Gildo
Wed Dec 19 11:59:55 2012
panic(cpu 0 caller 0xffffff8010a43d5b): "a freed zone element has been modified in zone: kalloc.1024"@/SourceCache/xnu/xnu-2050.18.24/osfmk/kern/zalloc.c:214
Backtrace (CPU 0), Frame : Return Address
0xffffff812c78b3a0 : 0xffffff8010a1d626
0xffffff812c78b410 : 0xffffff8010a43d5b
0xffffff812c78b450 : 0xffffff8010a435d2
0xffffff812c78b530 : 0xffffff8010a245ed
0xffffff812c78b560 : 0xffffff8010e22ca2
0xffffff812c78b580 : 0xffffff7f91e9b3ac
0xffffff812c78b6c0 : 0xffffff7f91dd21bd
0xffffff812c78b7f0 : 0xffffff7f91dc59aa
0xffffff812c78b9f0 : 0xffffff7f91dcba58
0xffffff812c78bad0 : 0xffffff7f91decfb3
0xffffff812c78bb40 : 0xffffff7f91decf2f
0xffffff812c78bbb0 : 0xffffff7f91e805c4
0xffffff812c78bbf0 : 0xffffff8010e47d9a
0xffffff812c78bc50 : 0xffffff7f91e81604
0xffffff812c78bc70 : 0xffffff7f91e7df64
0xffffff812c78bca0 : 0xffffff7f91c4c525
0xffffff812c78bce0 : 0xffffff7f91c4a036
0xffffff812c78bd10 : 0xffffff8010b1fe0c
0xffffff812c78bd50 : 0xffffff8010b24c56
0xffffff812c78bda0 : 0xffffff8010b11c96
0xffffff812c78bde0 : 0xffffff8010b094af
0xffffff812c78be10 : 0xffffff8010b08645
0xffffff812c78be60 : 0xffffff8010d4c56c
0xffffff812c78bed0 : 0xffffff8010d48b6f
0xffffff812c78bf20 : 0xffffff8010d4af60
0xffffff812c78bf50 : 0xffffff8010de182a
0xffffff812c78bfb0 : 0xffffff8010aced33
      Kernel Extensions in backtrace:
         com.apple.iokit.IOBluetoothFamily(4.0.9f33)[1C326A11-ADF7-353E-AD41-458D6A886E0 5]@0xffffff7f91db7000->0xffffff7f91e57fff
            dependency: com.apple.iokit.IOUSBFamily(5.4.0)[C3094550-7F58-3933-A4F7-CD33AE83F8B9]@0xffff ff7f910ea000
         com.apple.iokit.IOSerialFamily(10.0.6)[0165A9A0-F112-366C-9D82-EFC7344274F0]@0x ffffff7f91c49000->0xffffff7f91c56fff
         com.apple.iokit.IOBluetoothSerialManager(4.0.9f33)[6B6E14A7-7A68-3291-BFFF-F972 4D5B50FA]@0xffffff7f91e7b000->0xffffff7f91e84fff
            dependency: com.apple.iokit.IOSerialFamily(10.0.6)[0165A9A0-F112-366C-9D82-EFC7344274F0]@0x ffffff7f91c49000
         com.apple.iokit.AppleBluetoothHCIControllerUSBTransport(4.0.9f33)[867D6939-4D49 -3149-A1A5-380C236C8D12]@0xffffff7f91e8f000->0xffffff7f91eb5fff
            dependency: com.apple.iokit.IOUSBFamily(5.4.0)[C3094550-7F58-3933-A4F7-CD33AE83F8B9]@0xffff ff7f910ea000
            dependency: com.apple.iokit.IOACPIFamily(1.4)[A35915E8-C1B0-3C0F-81DF-5515BC9002FC]@0xfffff f7f90ff2000
            dependency: com.apple.iokit.IOPCIFamily(2.7.2)[B1B77B26-7984-302F-BA8E-544DD3D75E73]@0xffff ff7f910af000
BSD process name corresponding to current thread: MATLAB
Mac OS version:
12C60
Kernel version:
Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root:xnu-2050.18.24~1/RELEASE_X86_64
Kernel UUID: 69A5853F-375A-3EF4-9247-478FD0247333
Kernel slide:     0x0000000010800000
Kernel text base: 0xffffff8010a00000
System model name: MacBookPro5,3 (Mac-F22587C8)
System uptime in nanoseconds: 4765863445501
last loaded kext at 2974523021770: com.apple.filesystems.smbfs          1.8 (addr 0xffffff7f91019000, size 229376)
last unloaded kext at 34978808166: com.parallels.kext.prl_usb_connect          7.0 15104.778994 (addr 0xffffff7f9114c000, size 28672)
loaded kexts:
com.nvidia.CUDA          1.1.0
org.virtualbox.kext.VBoxNetAdp          4.0.4
org.virtualbox.kext.VBoxNetFlt          4.0.4
org.virtualbox.kext.VBoxUSB          4.0.4
org.virtualbox.kext.VBoxDrv          4.0.4
com.parallels.kext.prl_vnic          7.0 15104.778994
com.parallels.kext.prl_netbridge          7.0 15104.778994
com.parallels.kext.prl_hid_hook          7.0 15104.778994
com.parallels.kext.prl_hypervisor          7.0 15104.778994
com.parallels.kext.prl_usb_connect          7.0 15104.778994
com.logmein.driver.LogMeInSoundDriver          1.0.0
at.obdev.nke.LittleSnitch          3854
com.apple.filesystems.smbfs          1.8
com.apple.driver.AppleUSBCDC          4.1.22
com.apple.driver.AppleHWSensor          1.9.5d0
com.apple.driver.AppleTyMCEDriver          1.0.2d2
com.apple.driver.AGPM          100.12.69
com.apple.driver.AppleHDAHardwareConfigDriver          2.3.1f2
com.apple.driver.AppleHDA          2.3.1f2
com.apple.driver.AppleMikeyHIDDriver          122
com.apple.filesystems.autofs          3.0
com.apple.driver.AudioAUUC          1.60
com.apple.driver.AppleSMCLMU          2.0.2d0
com.apple.driver.AppleBacklight          170.2.3
com.apple.driver.AppleMikeyDriver          2.3.1f2
com.apple.driver.AppleMuxControl          3.2.11
com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0
com.apple.driver.AppleLPC          1.6.0
com.apple.iokit.IOBluetoothUSBDFU          4.0.9f33
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport          4.0.9f33
com.apple.driver.AppleUpstreamUserClient          3.5.10
com.apple.driver.AppleMCCSControl          1.0.33
com.apple.GeForce          8.0.0
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.iokit.IOBluetoothSerialManager          4.0.9f33
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.ApplePolicyControl          3.2.11
com.apple.driver.SMCMotionSensor          3.0.2d6
com.apple.driver.AppleUSBTCButtons          235.4
com.apple.driver.AppleFileSystemDriver          3.0.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          34
com.apple.driver.AppleUSBTCKeyEventDriver          235.4
com.apple.driver.AppleUSBTCKeyboard          235.4
com.apple.driver.AppleIRController          320.15
com.apple.driver.AppleUSBCardReader          3.1.0
com.apple.iokit.SCSITaskUserClient          3.5.1
com.apple.driver.XsanFilter          404
com.apple.iokit.IOAHCIBlockStorage          2.2.2
com.apple.driver.AppleFWOHCI          4.9.6
com.apple.driver.AppleAHCIPort          2.4.1
com.apple.driver.AirPort.Brcm4331          602.15.22
com.apple.nvenet          2.0.19
com.apple.driver.AppleUSBHub          5.2.5
com.apple.driver.AppleEFINVRAM          1.6.1
com.apple.driver.AppleUSBEHCI          5.4.0
com.apple.driver.AppleUSBOHCI          5.2.5
com.apple.driver.AppleSmartBatteryManager          161.0.0
com.apple.driver.AppleRTC          1.5
com.apple.driver.AppleHPET          1.7
com.apple.driver.AppleACPIButtons          1.6
com.apple.driver.AppleSMBIOS          1.9
com.apple.driver.AppleACPIEC          1.6
com.apple.driver.AppleAPIC          1.6
com.apple.driver.AppleIntelCPUPowerManagementClient          196.0.0
com.apple.nke.applicationfirewall          4.0.39
com.apple.security.quarantine          2
com.apple.driver.AppleIntelCPUPowerManagement          196.0.0
com.apple.driver.AppleBluetoothHIDKeyboard          165.5
com.apple.driver.AppleHIDKeyboard          165.5
com.apple.driver.AppleBluetoothHIDMouse          175.8
com.apple.driver.AppleHIDMouse          175.8
com.apple.driver.IOBluetoothHIDDriver          4.0.9f33
com.apple.driver.DspFuncLib          2.3.1f2
com.apple.kext.triggers          1.0
com.apple.iokit.IOFireWireIP          2.2.5
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.driver.AppleHDAController          2.3.1f2
com.apple.iokit.IOHDAFamily          2.3.1f2
com.apple.driver.AppleSMBusPCI          1.0.10d0
com.apple.driver.IOPlatformPluginLegacy          1.0.0
com.apple.driver.IOPlatformPluginFamily          5.2.0d16
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport          4.0.9f33
com.apple.driver.AppleSMBusController          1.0.10d0
com.apple.nvidia.nv50hal          8.0.0
com.apple.NVDAResman          8.0.0
com.apple.iokit.IOAudioFamily          1.8.9fc10
com.apple.kext.OSvKernDSPLib          1.6
com.apple.iokit.IOSurface          86.0.3
com.apple.iokit.IOSerialFamily          10.0.6
com.apple.iokit.IOBluetoothFamily          4.0.9f33
com.apple.driver.AppleGraphicsControl          3.2.11
com.apple.iokit.IONDRVSupport          2.3.5
com.apple.iokit.IOGraphicsFamily          2.3.5
com.apple.driver.AppleSMC          3.1.4d2
com.apple.driver.AppleUSBMultitouch          235.7
com.apple.iokit.IOUSBHIDDriver          5.2.5
com.apple.iokit.IOSCSIBlockCommandsDevice          3.5.1
com.apple.iokit.IOUSBMassStorageClass          3.5.0
com.apple.driver.AppleUSBMergeNub          5.2.5
com.apple.driver.AppleUSBComposite          5.2.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice          3.5.1
com.apple.iokit.IOBDStorageFamily          1.7
com.apple.iokit.IODVDStorageFamily          1.7.1
com.apple.iokit.IOCDStorageFamily          1.7.1
com.apple.iokit.IOAHCISerialATAPI          2.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily          3.5.1
com.apple.iokit.IOFireWireFamily          4.5.5
com.apple.iokit.IOAHCIFamily          2.2.1
com.apple.iokit.IO80211Family          500.15
com.apple.iokit.IONetworkingFamily          3.0
com.apple.iokit.IOUSBUserClient          5.2.5
com.apple.driver.NVSMU          2.2.9
com.apple.iokit.IOUSBFamily          5.4.0
com.apple.driver.AppleEFIRuntime          1.6.1
com.apple.iokit.IOHIDFamily          1.8.0
com.apple.iokit.IOSMBusFamily          1.1
com.apple.security.sandbox          220
com.apple.kext.AppleMatch          1.0.0d1
com.apple.security.TMSafetyNet          7
com.apple.driver.DiskImages          344
com.apple.iokit.IOStorageFamily          1.8
com.apple.driver.AppleKeyStore          28.21
com.apple.driver.AppleACPIPlatform          1.6
com.apple.iokit.IOPCIFamily          2.7.2
com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.corecrypto          1.0

Any or all of the following third-party system modifications may be contributing to your problem:
CUDA
VirtualBox
Parallels
LogMeIn
LittleSnitch
If the panic is recurrent, I suggest you uninstall all of them according to the developers' instructions, reboot, and see whether there's any improvement. If there is, you can experiment with putting them back, one at a time, to identify which one is at fault.

How to access the serial port in Java?

How can I initialise and access the serial port for writing and reading data from it? Are there any code examples available?

I tried that and I tried compiling and executing one of its examples, the one below:
import java.io.*;
import java.util.*;
import javax.comm.*;
public class SimpleWrite {
static Enumeration portList;
static CommPortIdentifier portId;
static String messageString = "Hello, world!\n";
static SerialPort serialPort;
static OutputStream outputStream;
public static void main(String[] args) {
portList = CommPortIdentifier.getPortIdentifiers();
while (portList.hasMoreElements()) {
portId = (CommPortIdentifier) portList.nextElement();
if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
if (portId.getName().equals("COM1")) {
//if (portId.getName().equals("/dev/term/a")) {
try {
serialPort = (SerialPort)
portId.open("SimpleWriteApp", 2000);
} catch (PortInUseException e) {}
try {
outputStream = serialPort.getOutputStream();
} catch (IOException e) {}
try {
serialPort.setSerialPortParams(9600,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
} catch (UnsupportedCommOperationException e) {}
try {
outputStream.write(messageString.getBytes());
} catch (IOException e) {}
But when I execute this I get the error:
Exception in thread "main" java.lang.NoClassDefFoundError: SimpleWrite
What is wrong with this example??

How to transfer file from PC to PC via serial port using labview

I need to transfer files(.txt, .doc, .xls) from PC to PC via serial port using LabVIEW. Is it possible to transfer files, if so how to transfer?
Solved!
Go to Solution.

Yes, it is possible to transfer files with the serial port using LabVIEW. Files are just collections of bytes and the serial port is pretty good at shipping bytes from one PC to another. You need to connect the serial ports together with a null modem cable.
First, take a look at the example for serial communication. In LabVIEW, go to the Help menu and select "Find Examples...". From there you can search for "serial" or navigate to Hardware Input and Output >> Serial. Select the "Basic Serial Write and Read.vi". Experiment with that example to gain confidence on the serial communication methods.
Next, it's time to learn about how to read and write files. For that, the examples could be somewhat confusing since they all deal with files that are presumed to have data of a specific type in them. I would recommend just getting familiar with the functions on the File I/O palette. Specifically, get to know the following functions.
Open/Create/Replace File - On your destination side, you'll need to create the copy of the file that you are trying to transfer
Close File - When you are finished reading from or writing to a file, you should close it. It cleans up the memory being used and finalizes any write operations that are still floating in the write buffer.
Read From Binary File - The best way to read from a file when you do not really care what type of file it is. In your case, you just want to get those bytes read and sent out so they can be written down at the destination.
Write to Binary File - At the destination side, this is what will store those bytes to the file you created with number 1.
Get File Size (under the Advanced File Functions sub-palette) - You need to know how big the file is so you know when you are finished.
OK, so once you are able to create files, write bytes to them, and read bytes from existing files you can move on to transferring.
The basic method I would suggest is to have the user specify a source file on the source PC and a destination folder on the destination PC. Then, find out the size of the source file using number 5. Divide that size number by the number of bytes you feel like transferring at once. The serial buffers are usually around 32k (if I remember correctly) so do not exceed that. Now begin sending data by reading some number of bytes and wiring that string output to the VISA Write function. On the destination side, you'll want to be monitoring the serial port for bytes and reading them when they arrive. Wire that string to the Write to Binary File function to add them to your destination file.
That is the basic outline of how to do it. You have to be careful not to overload the write and read buffers on the serial ports. Initially you can use delays on the sending side to make sure the reading side has enough time to digest. To get things moving faster, you can bring in some flow control.
If all that sounds a bit intimidating, there are Alliance Member companies out there (such as PrimeTest Automation) who can write such code for you and even provide a turnkey solution for you.
Happy wiring,
Dan Press
Certified LabVIEW Architect
PrimeTest Automation

Serial Port for Palm

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