Unable to Open Serial Port

Hi I am trying to write to an ADAM 4571 Ethernet to RS422 converter. Using the software provided by the vendor Ver. 1.49. I can setup the device properly, than configure it as a virtual com port. The problem is LabView sees the port but can not open it. Visa Open Fails every time. There is very little information about this problem.
Thanks,

Hey Thanks for replying so fast. I know the error code would be helpful, but I don't have access to the equipment at this time. Let me tell you a little more history; Two different computers one is a laptop, has the runtime LabView 11 SP1, NIDAQ951f1_downloader and niser370 installed. This machine the software works as it should running an executable. The second computer has LabView 11 SP1 Developer installed. This is the development station, this machine is the one that I can not open the Virtual com port. Vender software is installed on both machines and configured the same. The executable source code will not run on the development computer. It fails when it tries to talk to the serial port. To trouble shoot this problem I opened a blank VI dropped Visa Open and Visa Close in it wired a control to Comport selection and indicator to error out, connected error terminals and com out to com in. The error said that it could see the com port but could not talk to it. This error was generated by the open routine.

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Can't open Serial port in notebook (use Serial to USB)

OTL
use Serial to USB and java communication 2.0, windows 2003
and notebook which has no RS232C port
testing desktop it is done.
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Saludos
tengo el mismo problema, aunque he encontrado algunas
API pero solo tienen soporte para LINUX:
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Si tienen alguna solucion haganmela saber.In English via Babelfish (and a little common sense), in case anyone knows a solution:
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and
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It should show up in Measurement and Automation Explorer (MAX) click the Software folder to expand it, then click on NI-VISA. It should show the versions installed in the right panel.
~~~~~~~~~~~~~~~~~~~~~~~~~~
"It’s the questions that drive us.”
~~~~~~~~~~~~~~~~~~~~~~~~~~

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Hello,
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Attachments:
OLDSend&Recieve Data.vi ‏41 KB
NEWSend&Recieve Data.vi ‏40 KB

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Yes I am enregistred in the Mad For iPod program?
And I try to communique with my accessorie
So the Code
+*// SerialPortsModuleAppDelegate.m*+
+*// SerialPortsModule*+
+*// Created by BPO iMac on 08/02/10.*+
+*// Copyright _MyCompanyName_ 2010. All rights reserved.*+
+*#import "SerialPortsModuleAppDelegate.h"*+
+*#import <fcntl.h>*+
+*@implementation SerialPortsModuleAppDelegate*+
+*@synthesize window;*+
+*- (void)applicationDidFinishLaunching:(UIApplication *)application {*+
+*// Override point for customization after application launch*+
+*[window makeKeyAndVisible];*+
+* portSerie = [SerialManager alloc];*+
+* [portSerie init];*+
+* int nb_port;*+
+* nb_port = [portSerie findRS232Ports];*+
+* NSString path_port;+
+* path_port = [NSString alloc];*+
+* int num_port;*+
+* if(nb_port!=0)*+
+* {*+
+* num_port=0;*+
+* path_port=[portSerie pathAtIndex:num_port];*+
+* int resultat= [portSerie openInput:path_port baudrate:9600 bits:8 parity:0 stopbits:1 flags:O_RDONLY];*+
+* if(resultat==-1)*+
+* {*+
+* NSLog(@"Communication Error");*+
+* }*+
+* resultat= [portSerie openOutput:path_port baudrate:9600 bits:8 parity:0 stopbits:1];*+
+* if(resultat==-1)*+
+* {*+
+* NSLog(@"Communication Error");*+
+* }*+
+* }*+
+* [path_port release];*+
+* *+
+*- (void)dealloc {*+
+*[window release];*+
+*[super dealloc];*+
@end
+*// SerialPortsModuleAppDelegate.h*+
+*// SerialPortsModule*+
+*// Created by BPO iMac on 08/02/10.*+
+*// Copyright _MyCompanyName_ 2010. All rights reserved.*+
+*#import <UIKit/UIKit.h>*+
+*#import "SerialManager.h"*+
+*@interface SerialPortsModuleAppDelegate : NSObject <UIApplicationDelegate> {*+
+*UIWindow window;+
+* SerialManager portSerie;+
+*@property (nonatomic, retain) IBOutlet UIWindow window;+
@end
+*// SerialManager.m*+
+*// K3 Tools*+
+*// Created by Kok Chen on 4/28/09.*+
+*// Copyright 2009 Kok Chen, W7AY. All rights reserved.*+
+*#import "SerialManager.h"*+
+*#include <unistd.h>*+
+*#include <termios.h>*+
+*#include <sys/ioctl.h>*+
+*#include <IOKit/IOKitLib.h>*+
+*#include <IOKit/serial/IOSerialKeys.h>*+
+*#import <fcntl.h>*+
+*#import <UIKit/UIKit.h>*+
+*@implementation SerialManager*+
+*- (id)init*+
+* self = [ super init ] ;*+
+* if ( self ) {*+
+* termiosBits = -1 ;*+
+* inputfd = outputfd = -1 ;*+
+* useTermiosThread = NO ;*+
+* needsNotification = NO ;*+
+* termioLock = [ [ NSLock alloc ] init ] ;*+
+* }*+
+* return self ;*+
+*static int findPorts( CFStringRef *stream, CFStringRef *path, int maxDevice, CFStringRef type )*+
+*kernreturnt kernResult ;*+
+*machportt masterPort ;*+
+* ioiteratort serialPortIterator ;*+
+* ioobjectt modemService ;*+
+*CFMutableDictionaryRef classesToMatch ;*+
+* CFStringRef cfString ;*+
+* int count ;*+
+*kernResult = IOMasterPort( MACHPORTNULL, &masterPort ) ;*+
+*if ( kernResult != KERN_SUCCESS ) return 0 ;*+
+* *+
+*classesToMatch = IOServiceMatching( kIOSerialBSDServiceValue ) ;*+
+*if ( classesToMatch == NULL ) return 0 ;*+
+* *+
+* // get iterator for serial ports (including modems)*+
+* CFDictionarySetValue( classesToMatch, CFSTR(kIOSerialBSDTypeKey), type ) ;*+
+*kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch, &serialPortIterator ) ;*+
+* // walk through the iterator*+
+* count = 0 ;*+
+* while ( ( modemService = IOIteratorNext( serialPortIterator ) ) ) {*+
+* if ( count >= maxDevice ) break ;*+
+*cfString = IORegistryEntryCreateCFProperty( modemService, CFSTR(kIOTTYDeviceKey), kCFAllocatorDefault, 0 ) ;*+
+*if ( cfString ) {*+
+* stream[count] = cfString ;*+
+* cfString = IORegistryEntryCreateCFProperty( modemService, CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0 ) ;*+
+* if ( cfString ) {*+
+* path[count] = cfString ;*+
+* count++ ;*+
+* }*+
+* }*+
+*IOObjectRelease( modemService ) ;*+
+* IOObjectRelease( serialPortIterator ) ;*+
+* return count ;*+
+*// return number of ports*+
+*- (int)findPorts:(CFStringRef)type*+
+* CFStringRef cstream[64], cpath[64] ;*+
+* int i ;*+
+* *+
+* numberOfPorts = findPorts( cstream, cpath, 64, type ) ;*+
+* for ( i = 0; i < numberOfPorts; i++ ) {*+
+* stream = [ [ NSString stringWithString:(NSString*)cstream ] retain ] ;*+
+* CFRelease( cstream ) ;*+
+* path = [ [ NSString stringWithString:(NSString*)cpath ] retain ] ;*+
+* CFRelease( cpath ) ;*+
+* }*+
+* return numberOfPorts ;*+
+*- (int)findPorts*+
+* return [ self findPorts:CFSTR( kIOSerialBSDAllTypes ) ] ;*+
+*- (int)findModems*+
+* return [ self findPorts:CFSTR( kIOSerialBSDModemType ) ] ;*+
+*- (int)findRS232Ports*+
+* return [ self findPorts:CFSTR( kIOSerialBSDRS232Type ) ] ;*+
+*- (NSString)streamAtIndex:(int)n+
+* if ( n < 0 || n >= numberOfPorts ) return nil ;*+
+* return stream[n] ;*+
+*- (NSString)pathAtIndex:(int)n+
+* if ( n < 0 || n >= numberOfPorts ) return nil ;*+
+* return path[n] ;*+
+*// common function to open port and set up serial port parameters*+
+*static int openPort( NSString *path, int speed, int bits, int parity, int stops, int openFlags, Boolean input )*+
+* int fd, cflag ;*+
+* struct termios termattr ;*+
+* *+
+* fd = open( [ path cStringUsingEncoding:NSASCIIStringEncoding], openFlags ) ;*+
+* if ( fd < 0 ) return -1 ;*+
+* *+
+* // build other flags*+
+* cflag = 0 ;*+
+* cflag |= ( bits == 7 ) ? CS7 : CS8 ; // bits*+
+* if ( parity != 0 ) {*+
+* cflag |= PARENB ; // parity*+
+* if ( parity == 1 ) cflag |= PARODD ;*+
+* }*+
+* if ( stops > 1 ) cflag |= CSTOPB ;*+
+* *+
+* // merge flags into termios attributes*+
+* tcgetattr( fd, &termattr ) ;*+
+* termattr.c_cflag &= ~( CSIZE | PARENB | PARODD | CSTOPB ) ; // clear all bits and merge in our selection*+
+* termattr.c_cflag |= cflag ;*+
+* *+
+* // set speed, split speed not support on Mac OS X?*+
+* cfsetispeed( &termattr, speed ) ;*+
+* cfsetospeed( &termattr, speed ) ;*+
+* // set termios*+
+* tcsetattr( fd, TCSANOW, &termattr ) ;*+
+* return fd ;*+
+*- (int)openInput:(NSString*)pathname baudrate:(int)speed bits:(int)bits parity:(int)parity stopbits:(int)stops flags:(int)openFlags*+
+* return ( inputfd = openPort( pathname, speed, bits, parity, stops, openFlags, YES ) ) ;*+
+*- (int)openInput:(NSString*)pathname baudrate:(int)speed bits:(int)bits parity:(int)parity stopbits:(int)stops*+
+* return ( inputfd = openPort( pathname, speed, bits, parity, stops, ( O_RDONLY | O_NOCTTY | O_NDELAY ), YES ) ) ;*+
+*- (int)openOutput:(NSString*)pathname baudrate:(int)speed bits:(int)bits parity:(int)parity stopbits:(int)stops flags:(int)openFlags*+
+* return ( outputfd = openPort( pathname, speed, bits, parity, stops, openFlags, NO ) ) ;*+
+*- (int)openOutput:(NSString*)pathname baudrate:(int)speed bits:(int)bits parity:(int)parity stopbits:(int)stops*+
+* return ( outputfd = openPort( pathname, speed, bits, parity, stops, ( O_WRONLY | O_NOCTTY | O_NDELAY ), NO ) ) ;*+
+*- (void)closeInput*+
+* if ( inputfd > 0 ) close( inputfd ) ;*+
+*- (void)closeOutput*+
+* if ( outputfd > 0 ) close( outputfd ) ;*+
+*- (int)inputFileDescriptor*+
+* return inputfd ;*+
+*- (int)outputFileDescriptor*+
+* return outputfd ;*+
+*- (int)getTermios*+
+* int bits ;*+
+* *+
+* if ( inputfd > 0 ) {*+
+* [ termioLock lock ] ;*+
+* ioctl( inputfd, TIOCMGET, &bits ) ;*+
+* [ termioLock unlock ] ;*+
+* return bits ;*+
+* }*+
+* return 0 ;*+
+*- (void)setRTS:(Boolean)state*+
+* int bits ;*+
+* if ( inputfd > 0 ) {*+
+* [ termioLock lock ] ;*+
+* ioctl( inputfd, TIOCMGET, &bits ) ;*+
+* if ( state ) bits |= TIOCM_RTS ; else bits &= ~( TIOCM_RTS ) ;*+
+* ioctl( inputfd, TIOCMSET, &bits ) ;*+
+* [ termioLock unlock ] ;*+
+* }*+
+*- (void)setDTR:(Boolean)state*+
+* int bits ;*+
+* if ( inputfd > 0 ) {*+
+* [ termioLock lock ] ;*+
+* ioctl( inputfd, TIOCMGET, &bits ) ;*+
+* if ( state ) bits |= TIOCM_DTR ; else bits &= ~( TIOCM_DTR ) ;*+
+* ioctl( inputfd, TIOCMSET, &bits ) ;*+
+* [ termioLock unlock ] ;*+
+* }*+
+*// IO Notifications*+
+*// prototype for delegate*+
+*- (void)port:(NSString*)name added:(Boolean)added*+
+* if ( delegate && [ delegate respondsToSelector:@selector(port:added:) ] ) [ delegate port:name added:added ] ;*+
+*// this is called from deviceAdded() and deviceRemoved() callbacks*+
+*- (void)portsChanged:(Boolean)added iterator:(ioiteratort)iterator*+
+* ioobjectt modemService ;*+
+* CFStringRef cfString ;*+
+* while ( ( modemService = IOIteratorNext( iterator ) ) > 0 ) {*+
+* cfString = IORegistryEntryCreateCFProperty( modemService, CFSTR( kIOTTYDeviceKey ), kCFAllocatorDefault, 0 ) ;*+
+* if ( cfString ) {*+
+* [ self port:(NSString*)cfString added:added ] ;*+
+* CFRelease( cfString ) ;*+
+* }*+
+* IOObjectRelease( modemService ) ;*+
+* }*+
+*// callback notification when device added*+
+*static void deviceAdded(void *refcon, ioiteratort iterator )*+
+* ioobjectt modemService ;*+
+* *+
+* if ( refcon ) [ (SerialManager*)refcon portsChanged:YES iterator:iterator ] ;*+
+* else {*+
+* while ( modemService = IOIteratorNext( iterator ) ) IOObjectRelease( modemService ) ;*+
+* }*+
+*static void deviceRemoved(void *refcon, ioiteratort iterator )*+
+* ioobjectt modemService ;*+
+* *+
+* if ( refcon ) [ (SerialManager*)refcon portsChanged:NO iterator:iterator ] ;*+
+* else {*+
+* while ( modemService = IOIteratorNext( iterator ) ) IOObjectRelease( modemService ) ;*+
+* }*+
+*- (void)startNotification*+
+* CFMutableDictionaryRef matchingDict ;*+
+* *+
+* notifyPort = IONotificationPortCreate( kIOMasterPortDefault ) ;*+
+* CFRunLoopAddSource( CFRunLoopGetCurrent(), IONotificationPortGetRunLoopSource( notifyPort ), kCFRunLoopDefaultMode ) ;*+
+* matchingDict = IOServiceMatching( kIOSerialBSDServiceValue ) ;*+
+* CFRetain( matchingDict ) ;*+
+* CFDictionarySetValue( matchingDict, CFSTR(kIOSerialBSDTypeKey), CFSTR( kIOSerialBSDAllTypes ) ) ;*+
+* *+
+* IOServiceAddMatchingNotification( notifyPort, kIOFirstMatchNotification, matchingDict, deviceAdded, self, &addIterator ) ;*+
+* deviceAdded( nil, addIterator ) ; // set up addIterator*+
+* IOServiceAddMatchingNotification( notifyPort, kIOTerminatedNotification, matchingDict, deviceRemoved, self, &removeIterator ) ;*+
+* deviceRemoved( nil, removeIterator ) ; // set up removeIterator*+
+*- (void)stopNotification*+
+* if ( addIterator ) {*+
+* IOObjectRelease( addIterator ) ;*+
+* addIterator = 0 ;*+
+* }*+
+* if ( removeIterator ) {*+
+* IOObjectRelease( removeIterator ) ;*+
+* removeIterator = 0 ;*+
+* }*+
+* if ( notifyPort ) {*+
+* CFRunLoopRemoveSource( CFRunLoopGetCurrent(), IONotificationPortGetRunLoopSource( notifyPort ), kCFRunLoopDefaultMode ) ;*+
+* IONotificationPortDestroy( notifyPort ) ;*+
+* notifyPort = nil ;*+
+* }*+
+*// prototype for delegate or subclass*+
+*- (void)controlFlagsChanged:(int)termbits*+
+* if ( delegate && [ delegate respondsToSelector:@selector(controlFlagsChanged:) ] ) [ delegate controlFlagsChanged:termbits ] ;*+
+*- (void)termiosThread*+
+* NSAutoreleasePool *pool = [ [ NSAutoreleasePool alloc ] init ] ;*+
+* int termbits ;*+
+* while ( 1 ) {*+
+* if ( useTermiosThread == NO ) break ;*+
+* if ( inputfd > 0 ) {*+
+* if ( [ termioLock tryLock ] ) {*+
+* ioctl( inputfd, TIOCMGET, &termbits ) ;*+
+* if ( termiosBits != termbits ) [ self controlFlagsChanged:termbits ] ;*+
+* termiosBits = termbits ;*+
+* [ termioLock unlock ] ;*+
+* }*+
+* [ NSThread sleepUntilDate:[ NSDate dateWithTimeIntervalSinceNow:0.25 ] ] ;*+
+* }*+
+* else {*+
+* [ NSThread sleepUntilDate:[ NSDate dateWithTimeIntervalSinceNow:1.0 ] ] ;*+
+* }*+
+* }*+
+* [ pool release ] ;*+
+*// If delegate is set, setDelegate also starts a termiosThread if delegate responds to -controlFlagsChanged:*+
+*- (void)setDelegate:(id)object*+
+* delegate = object ;*+
+* if ( delegate == nil ) {*+
+* useTermiosThread = NO ;*+
+* if ( needsNotification ) {*+
+* needsNotification = NO ;*+
+* [ self stopNotification ] ;*+
+* }*+
+* }*+
+* else {*+
+* if ( [ delegate respondsToSelector:@selector(controlFlagsChanged:) ] ) {*+
+* useTermiosThread = YES ;*+
+* [ NSThread detachNewThreadSelector:@selector(termiosThread) toTarget:self withObject:nil ] ;*+
+* } *+
+* if ( [ delegate respondsToSelector:@selector(port:added:) ] ) {*+
+* needsNotification = YES ;*+
+* [ self startNotification ] ;*+
+* }*+
+* }*+
+*- (id)delegate*+
+* return delegate ;*+
@end
+*// SerialManager.h*+
+*// K3 Tools*+
+*// Created by Kok Chen on 4/28/09.*+
+*// Copyright 2009 Kok Chen, W7AY. All rights reserved.*+
+*//#import <Cocoa/Cocoa.h>*+
+*#import <Foundation/Foundation.h>*+
+*#import <UIKit/UIKit.h>*+
+*#import <CoreData/CoreData.h>*+
+*//#import <IOKit/IOKitLib.h>*+
+*//#import <IOKitLib.h>*+
+*#include <IOKit/IOKitLib.h>*+
+*typedef int FileDescriptor ;*+
+*@interface SerialManager : NSObject {*+
+* NSLock *termioLock ;*+
+* FileDescriptor outputfd ;*+
+* FileDescriptor inputfd ;*+
+* id delegate ;*+
+* // serial ports in system*+
+* NSString *stream[64] ;*+
+* NSString *path[64] ;*+
+* int numberOfPorts ;*+
+* *+
+* // termios*+
+* int termiosBits ;*+
+* Boolean useTermiosThread ;*+
+* *+
+* // IO notifications*+
+* IONotificationPortRef notifyPort ;*+
+* ioiteratort addIterator, removeIterator ;*+
+* Boolean needsNotification ;*+
+*- (void)setDelegate:(id)sender ;*+
+*- (int)findPorts ;*+
+*- (int)findModems ;*+
+*- (int)findRS232Ports ;*+
+*- (NSString*)streamAtIndex:(int)n ;*+
+*- (NSString*)pathAtIndex:(int)n ;*+
+*- (FileDescriptor)openInput:(NSString*)path baudrate:(int)speed bits:(int)bits parity:(int)parity stopbits:(int)stops ;*+
+*- (FileDescriptor)openInput:(NSString*)path baudrate:(int)speed bits:(int)bits parity:(int)parity stopbits:(int)stops flags:(int)openFlags ;*+
+*- (FileDescriptor)openOutput:(NSString*)path baudrate:(int)speed bits:(int)bits parity:(int)parity stopbits:(int)stops ;*+
+*- (FileDescriptor)openOutput:(NSString*)path baudrate:(int)speed bits:(int)bits parity:(int)parity stopbits:(int)stops flags:(int)openFlags ;*+
+*- (void)closeInput ;*+
+*- (void)closeOutput ;*+
+*- (FileDescriptor)inputFileDescriptor ;*+
+*- (FileDescriptor)outputFileDescriptor ;*+
+*- (int)getTermios ;*+
+*- (void)setRTS:(Boolean)state ;*+
+*- (void)setDTR:(Boolean)state ;*+
+*- (void)setDelegate:(id)object ;*+
+*- (id)delegate ;*+
+*// delegates*+
+*- (void)port:(NSString*)name added:(Boolean)added ;*+
+*- (void)controlFlagsChanged:(int)termbits ;*+
@end
Could you help me ?

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).
For that matter i have two cell phones, exactly the same model, one from each carrier, connected to the PC serial ports, COM, COM6 and COM7 being aware that they are available.
-The application communicats with the phones through the a serial communication API and sending AT commands.
-The application can send messages correctly from both phones within the same transaction, this is, i click in send message and the message is sent from both phones.
The problem is when receiving, getting the SMS received by the phones:
-When i have ONE phone connected to the PC it work properly for both phones.
-When i have BOTH phones connected, only Carrier1 phone receives properly.
When checking, i just find out that the problem rises when i try to add the listeners (see code comments below).
When both phones connected there seems to be a problem that i cant figure out, and may be its a conceptual misunderstanding from me.
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;
// ... all the code below is from the app method where everything is initializated
portsList = CommPortIdentifier.getPortIdentifiers();
while(portsList.hasMoreElements()){
     portId = (CommPortIdentifier) portsList.nextElement();
     if(portId.getPortType() == CommPortIdentifier.PORT_SERIAL){
          // try to open ports
          try{
               if(portId.getName().equals(PORT_CARRIER1))
                    carrier1SP = (SerialPort) portId.open("SMS", 5000);
               else if(portId.getName().equals(PORT_CARRIER2))
                    carrier2SP = (SerialPort) portId.open("SMS", 5000);
               else System.out.println("Error " + portId.getName());
          }catch(PortInUseException piue){
               System.out.println("Exception while opening serial ports: "+piue.getMessage());
               continue;
          // try to open input streams
          try{
               if(portId.getName().equals(PORT_CARRIER1))
                    carrier1_input = carrier1SP.getInputStream();
               else if(portId.getName().equals(PORT_CARRIER2))
                    carrier2_input = carrier2SP.getInputStream();
          }catch(IOException ioe){
               System.out.println("Exception while opening input streams: "+ioe.getMessage());
               continue;
          // try to open output streams
          try{
               if(portId.getName().equals(PORT_CARRIER1))
                    carrier1_output = carrier1SP.getOutputStream();
               else if(portId.getName().equals(PORT_CARRIER2))
                    carrier2_output = carrier2SP.getOutputStream();
          }catch(IOException ioe){
               System.out.println("Exception while opening output streams: "+ioe.getMessage());
               continue;
          // adding listeners
          try{
               if(portId.getName().equals(PORT_CARRIER1))
                    carrier1SP.addEventListener(new ListenerPuerto(this, carrier1_input, "CARRIER1"));
               else if(portId.getName().equals(PORT_CARRIER2))
                    carrier2SP.addEventListener(new ListenerPuerto(this, carrier2_input, "CARRIER2"));
          }catch(TooManyListenersException tmle){
               System.out.println("Error while adding listeners: " + tmle.getMessage());
               continue;
          // Adding specific event to listeners
          if(portId.getName().equals(PORT_CARRIER1))
               carrier1SP.notifyOnDataAvailable(true);
          else if(portId.getName().equals(PORT_CARRIER2))
               carrier2SP.notifyOnDataAvailable(true);
          // Setting params to serial communication
          try{
               if(portId.getName().equals(PORT_CARRIER1)){
                    carrier1SP.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
                    carrier1 = true;
               }else if(portId.getName().equals(PORT_CARRIER2)){
                    carrier2SP.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
                    carrier2 = true;
          }catch(UnsupportedCommOperationException uscoe){
               System.out.println("Error while setting params for serial communication: " + uscoe.getMessage());
               continue;
          // ... nothing else important ...thanks in advance

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.

Serial port ReadTo timeout exception

Hello.
I am communicating with modem using serial port.
The fist time I open serial port and start sending AT commands everything works fine.
Then I wait for a couple of seconds and repeat procedure...
Second time it opens port and sends first command and waits port.ReadTo("\r\n") -> and here is operation timed out exception.
If I close the program and start again it works fine... its like serial port wasnt disposed properly?
Here is the program:
class Program
static void Main(string[] args)
SendATcommands();
Thread.Sleep(5000);
SendATcommands();
static void SendATcommands()
SerialPort port = new SerialPort();
port.RtsEnable = true;
port.BaudRate = 9600;
port.DataBits = 8;
port.Handshake = Handshake.None;
port.Parity = Parity.None;
port.PortName = "COM9";
port.StopBits = StopBits.One;
port.WriteTimeout = 20000;
port.ReadTimeout = 30000;
port.NewLine = "\r";
port.Open();
Thread.Sleep(1000);
port.WriteLine("+++");
Thread.Sleep(1000);
port.WriteLine("AT\r\n");
port.ReadTo("\r\n");
port.WriteLine("ATH\r\n");
port.ReadTo("OK\r\n");
port.WriteLine("AT\r\n");
port.ReadTo("OK\r\n");
port.WriteLine("AT&D2\r\n");
port.ReadTo("OK\r\n");
port.WriteLine("AT\r\n");
port.ReadTo("OK\r\n");
port.WriteLine("ATE0V1Q0\r\n");
port.ReadTo("OK\r\n");
port.WriteLine("AT\r\n");
port.ReadTo("OK\r\n");
port.WriteLine("ATDT040111222"); //phone number
port.ReadTo("CONNECT 9600/RLP\r\n");
port.WriteLine("ATH");
Thread.Sleep(1000);
port.WriteLine("+++");
Thread.Sleep(1000);
port.Close();
port.Dispose();

Closing the serial port makes normal no sense, when you want a contious communication. Also using sleep to time your commands is pretty useless as the modem may need longer to prepare for the next command. Thus you need to read the answer from your modem
and continue when sent an OK.

[SOLVED] How to set non-root access to serial ports?

I have this device which is listed as
/dev/ttyUSB0
I need to
sudo chown sms /dev/ttyUSB0
every time I reboot. Normally I would think to add myself to some group but "tty" group is not doing the trick... proof:
[sms@sms-linux ~]$ groups sms
tty wheel sms
[sms@sms-linux ~]$ MinOZW
Starting MinOZW with OpenZWave Version 1.0.758
2014-03-15 06:32:07.921 Cannot find a path to the configuration files at ../../../config/, Using /usr/local/etc/openzwave/ instead...
2014-03-15 06:32:07.928 mgr, Added driver for controller /dev/ttyUSB0
2014-03-15 06:32:07.929 Opening controller /dev/ttyUSB0
2014-03-15 06:32:07.931 Trying to open serial port /dev/ttyUSB0 (attempt 1)
2014-03-15 06:32:07.933 ERROR: Cannot open serial port /dev/ttyUSB0. Error code 13
2014-03-15 06:32:07.935 ERROR: Failed to open serial port /dev/ttyUSB0
2014-03-15 06:32:07.936 WARNING: Failed to init the controller (attempt 0)
^C
[sms@sms-linux ~]$ sudo MinOZW
[sudo] password for root:
Starting MinOZW with OpenZWave Version 1.0.758
2014-03-15 06:32:23.776 Cannot find a path to the configuration files at ../../../config/, Using /usr/local/etc/openzwave/ instead...
2014-03-15 06:32:23.782 mgr, Added driver for controller /dev/ttyUSB0
2014-03-15 06:32:23.784 Opening controller /dev/ttyUSB0
2014-03-15 06:32:23.786 Trying to open serial port /dev/ttyUSB0 (attempt 1)
2014-03-15 06:32:23.794 Serial port /dev/ttyUSB0 opened (attempt 1)
Edit: yes, it was after logout and even reboot.
Last edited by smsware (2014-03-15 15:07:15)

Hi,
I also have a similar problem. I added myself to uucp group, but I still cannot access the serial port.
[manjaro@mycomp work]$ sudo gpasswd -a manjaro uucp
[sudo] password for manjaro:
Adding user manjaro to group uucp
[manjaro@mycomp work]$ groups manjaro
lp wheel uucp network video audio storage users
[manjaro@mycomp work]$ ls -l /dev/ttyUSB0
crw-rw---- 1 root uucp 188, 0 23.06.2014 21:32 /dev/ttyUSB0
[manjaro@mycomp work]$ lpc21isp firmware.hex /dev/ttyUSB0 19200 11059
lpc21isp version 1.97
File firmware.hex:
loaded...
Start Address = 0x00004F9C
converted to binary format...
image size : 30304
Image size : 30304
Can't open COM-Port /dev/ttyUSB0 ! (Error: 13d (0xD))
But when I try as root, it works:
[manjaro@mycomp work]$ sudo lpc21isp firmware.hex /dev/ttyUSB0 19200 11059
[sudo] password for manjaro:
lpc21isp version 1.97
File firmware.hex:
loaded...
Start Address = 0x00004F9C
converted to binary format...
image size : 30304
Image size : 30304
Synchronizing (ESC to abort)..... OK
Read bootcode version: 13
Download Finished... taking 27 seconds
Now launching the brand new code
Do you have any idea what I am doing wrong?
Last edited by manjaro (2014-06-23 19:57:40)

Hi. My new computer had Acrobat on it. Suddenly, I was unable to open any PDF's. and then I tried to update and was forwarded to the Adobe site that said I had to buy a monthly subscription. I do not have the physical box with a serial number and was

Hi. My new computer had Acrobat on it. Suddenly, I was unable to open any PDF's. and then I tried to update and was forwarded to the Adobe site that said I had to buy a monthly subscription. I do not have the physical box with a serial number and was going to buy the one advertised on the website until I discovered it's only for students and teachers, which I am not. What should I do next as I need to use PDFs on a daily basis. Thanks! I would like to be able to download this and pay online. Possible? I currently have Adobe Acrobat XI Pro. I have a Windows 7 system. Please help!

As long as you know your serial number you can download PSE from here:
Download Photoshop Elements products | 11, 10
If you don't know your serial number:
Find your serial number quickly

Open and configure serial port

Hi,
when i use the function configured serial port, i can work with it.
for which case i need the function open port. do i need both an in which order?
thanks florian

Hi florian
check the help examples
Attached png file shows the example.
chow
xseadog
Attachments:
serial.PNG ‏39 KB

Java ME 8 Permission check failed when opening a serial port

I have a larger Jave ME8.1 application that was going well until I tried to add one last piece, reading and writing data from a serial port. This was left to last because it is trivial, at least in most programming languages. The is IDE NetBeans 8.0.2 running on a Windows 7 PC. The platform is a Raspberry Pi B or B+ (I have tried both) with the most current Raspbian (12/24/2014 I believe). To simplify the process I created a new app with just the open and close code and this generates the same error I am experiencing in the larger application. The program is as follows:
package javamecomapp;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.microedition.io.CommConnection;
import javax.microedition.io.Connector;
import javax.microedition.midlet.MIDlet;
* @author ****
public class JavaMEcomApp extends MIDlet {
    static int BAUD_RATE = 38400;
    static String SERIAL_DEVICE = "ttyAMA0";
    static CommConnection commConnection = null;
    static OutputStream os = null;
    static InputStream is = null;
    static String connectorString;
    private int rtnValue = -1;
    @Override
    public void startApp() {
        java.lang.System.out.println("Opening comm port.");
        try {
            rtnValue = JavaMEcomApp.openComm();
        } catch (IOException ex) {
            Logger.getLogger(JavaMEcomApp.class.getName()).log(Level.SEVERE, null, ex);
    @Override
    public void destroyApp(boolean unconditional) {
        java.lang.System.out.println("Closing comm port.");
        try {
            rtnValue = JavaMEcomApp.closeComm();
        } catch (IOException ex) {
            Logger.getLogger(JavaMEcomApp.class.getName()).log(Level.SEVERE, null, ex);
        private static int openComm()throws IOException {
            java.lang.System.out.println("Opening comm port.");
            connectorString = "comm:" + SERIAL_DEVICE + ";baudrate=" + BAUD_RATE;
            commConnection = (CommConnection)Connector.open(connectorString);
            is = commConnection.openInputStream();
            os = commConnection.openOutputStream();
        return 0;
    private static int closeComm()throws IOException {
        java.lang.System.out.println("Closing comm port.");
            is.close();
            os.close();
            commConnection.close();
        return 0;
If I comment out the JavaMEcomApp.openComm and closeComm lines it runs fine. When they are included, the following error is dumped to the Raspberry Pi terminal:
Opening comm port.
Opening comm port.
[CRITICAL] [SECURITY] iso=2:Permission check failed: javax.microedition.io.CommProtocolPermission "comm:ttyAMA0;baudrate=38400" ""
TRACE: <at java.security.AccessControlException: >, startApp threw an Exception
java.security.AccessControlException:
- com/oracle/meep/security/AccessControllerInternal.checkPermission(), bci=118
- java/security/AccessController.checkPermission(), bci=1
- com/sun/midp/io/j2me/comm/Protocol.checkForPermission(), bci=16
- com/sun/midp/io/j2me/comm/Protocol.openPrim(), bci=31
- javax/microedition/io/Connector.open(), bci=77
- javax/microedition/io/Connector.open(), bci=6
- javax/microedition/io/Connector.open(), bci=3
- javamecomapp/JavaMEcomApp.openComm(), bci=46
- javamecomapp/JavaMEcomApp.startApp(), bci=9
- javax/microedition/midlet/MIDletTunnelImpl.callStartApp(), bci=1
- com/sun/midp/midlet/MIDletPeer.startApp(), bci=5
- com/sun/midp/midlet/MIDletStateHandler.startSuite(), bci=246
- com/sun/midp/main/AbstractMIDletSuiteLoader.startSuite(), bci=38
- com/sun/midp/main/CldcMIDletSuiteLoader.startSuite(), bci=5
- com/sun/midp/main/AbstractMIDletSuiteLoader.runMIDletSuite(), bci=130
- com/sun/midp/main/AppIsolateMIDletSuiteLoader.main(), bci=26
java.security.AccessControlException:
- com/oracle/meep/security/AccessControllerInternal.checkPermission(), bci=118
- java/security/AccessController.checkPermission(), bci=1
- com/sun/midp/io/j2me/comm/Protocol.checkForPermission(), bci=16
- com/sun/midp/io/j2me/comm/Protocol.openPrim(), bci=31
- javax/microedition/io/Connector.open(), bci=77
- javax/microedition/io/Connector.open(), bci=6
- javax/microedition/io/Connector.open(), bci=3
- javamecomapp/JavaMEcomApp.openComm(), bci=46
- javamecomapp/JavaMEcomApp.startApp(), bci=9
- javax/microedition/midlet/MIDletTunnelImpl.callStartApp(), bci=1
- com/sun/midp/midlet/MIDletPeer.startApp(), bci=5
- com/sun/midp/midlet/MIDletStateHandler.startSuite(), bci=246
- com/sun/midp/main/AbstractMIDletSuiteLoader.startSuite(), bci=38
- com/sun/midp/main/CldcMIDletSuiteLoader.startSuite(), bci=5
- com/sun/midp/main/AbstractMIDletSuiteLoader.runMIDletSuite(), bci=130
- com/sun/midp/main/AppIsolateMIDletSuiteLoader.main(), bci=26
Closing comm port.
Closing comm port.
TRACE: <at java.lang.NullPointerException>, destroyApp threw an Exception
java.lang.NullPointerException
- javamecomapp/JavaMEcomApp.closeComm(), bci=11
- javamecomapp/JavaMEcomApp.destroyApp(), bci=9
- javax/microedition/midlet/MIDletTunnelImpl.callDestroyApp(), bci=2
- com/sun/midp/midlet/MIDletPeer.destroyApp(), bci=6
- com/sun/midp/midlet/MIDletStateHandler.startSuite(), bci=376
- com/sun/midp/main/AbstractMIDletSuiteLoader.startSuite(), bci=38
- com/sun/midp/main/CldcMIDletSuiteLoader.startSuite(), bci=5
- com/sun/midp/main/AbstractMIDletSuiteLoader.runMIDletSuite(), bci=130
- com/sun/midp/main/AppIsolateMIDletSuiteLoader.main(), bci=26
java.lang.NullPointerException
- javamecomapp/JavaMEcomApp.closeComm(), bci=11
- javamecomapp/JavaMEcomApp.destroyApp(), bci=9
- javax/microedition/midlet/MIDletTunnelImpl.callDestroyApp(), bci=2
- com/sun/midp/midlet/MIDletPeer.destroyApp(), bci=6
- com/sun/midp/midlet/MIDletStateHandler.startSuite(), bci=376
- com/sun/midp/main/AbstractMIDletSuiteLoader.startSuite(), bci=38
- com/sun/midp/main/CldcMIDletSuiteLoader.startSuite(), bci=5
- com/sun/midp/main/AbstractMIDletSuiteLoader.runMIDletSuite(), bci=130
com/sun/midp/main/AppIsolateMIDletSuiteLoader.main(), bci=26
I have tried this with three different serial ports, /dev/ttyAMA0 (yes I did disable the OS from using it), an arduino board /dev/ttyACM0, and a USB to RS485 adaptor /dev/ttyUSB0. All of these ports could be connected and use normally with both a C program and terminal program in the Pi. The API Permissions were set in the project properties / Application Descriptor / API Permissions to jdk.dio.DeviceMgmtPermission "/dev/ttyAMA0". This of course was changed as I tested different devices.
I found a reference suggesting adding the line "authentication.provider = com.oracle.meep.security.NullAuthenticationProvider" to the end of the jwc_properties.ini file. This had no effect. I found references that during development in eclipse and NetBeans, the app is already elevated to the top level so this should not be an issue until deployment. This does not appear to be the case.
I am out of time and need a solution quickly. Any suggestions are welcome.

Terrence,
   Thank you for responding and confirming the issues I'm having with static addressing. As far as the example above, I do have the standard LEDs working correctly, however, the example I'm referring to above is from the JavaME samples using the GPIO Port for the LEDS, according to the Device I/O Preconfigured List you referenced:
GPIO Ports
The following GPIO ports are preconfigured.
Devicel ID
Device Name
Mapped
Configuration
8
LEDS
PTB22
PTE26
PTB21
direction = 1 (Output only)
initValue = 0
GPIOPins:
controllerNumber = 1
pinNumber = 22
mode = 4 (Push-pull mode)
controllerNumber = 4
pinNumber = 26
mode = 4 (Push-pull mode)
controllerNumber = 1
pinNumber = 21
mode = 4 (Push-pull mode)
So is the assumption that using GPIOPort for accessing the GPIO port for Device ID 8 as listed in the Device I/O Preconfigured list not supported?

Unable to Open Serial Port

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