Serial - Revision history

CamGraham: /* Printing to a line printer */

2020-09-04T01:29:34Z

Printing to a line printer

← Older revision		Revision as of 01:29, 4 September 2020
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	== Printing to a line printer ==		== Printing to a line printer ==
	You can use a line printer with LabVIEW, but you need to add a line to your LabVIEW ini file first. Although this is a perfectly valid solution to this problem you should read the excellent advice about this critical ~~INI~~ file in the section entitled "Should I play with the undocumented LabVIEW settings?".		You can use a line printer with LabVIEW, but you need to add a line to your LabVIEW ini file first. (Although this is a perfectly valid solution to this problem you should read the excellent advice about this critical file in the section entitled "Should I play with the undocumented LabVIEW settings?")

	First add the following as a single complete line:		First add the following as a single complete line:
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	using a simple text editor such as NOTEPAD.		using a simple text editor such as NOTEPAD.

	Second, you need to access the printer just as you would a normal serial device. In other words you must initialise the port (port 10 for LPT1) with the Serial Port Init VI and use the Serial Port Write VI to send the string to be printed direct to the printer. Note that this will pause your program execution until the printing is completed. To avoid this feature you will need to ~~setup~~ a separate process and pass the strings to be printed via a queue or global.		Second, you need to access the printer just as you would a normal serial device. In other words you must initialise the port (port 10 for LPT1) with the Serial Port Init VI and use the Serial Port Write VI to send the string to be printed direct to the printer. Note that this will pause your program execution until the printing is completed. To avoid this feature you will need to set up a separate process and pass the strings to be printed via a queue or global.

	If you want access to the line printer in a built application, then the same rules for other LabVIEW ini file settings should be followed (see "How do I include ini settings in my built application?")		If you want access to the line printer in a built application, then the same rules for other LabVIEW ini file settings should be followed (see "How do I include ini settings in my built application?")

CamGraham: /* Printing to a line printer */

2020-09-04T01:25:03Z

Printing to a line printer

← Older revision		Revision as of 01:25, 4 September 2020
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	== Printing to a line printer ==		== Printing to a line printer ==
	You can use a line printer ~~wuth~~ LabVIEW, but you need to add a line to your LabVIEW ini file first. Although this is a perfectly valid solution to this problem you should read the excellent advice about this critical INI file in the section entitled "Should I play with the undocumented LabVIEW settings?".		You can use a line printer with LabVIEW, but you need to add a line to your LabVIEW ini file first. Although this is a perfectly valid solution to this problem you should read the excellent advice about this critical INI file in the section entitled "Should I play with the undocumented LabVIEW settings?".

	First add the following as a single complete line:		First add the following as a single complete line:
Line 15:		Line 15:
	Second, you need to access the printer just as you would a normal serial device. In other words you must initialise the port (port 10 for LPT1) with the Serial Port Init VI and use the Serial Port Write VI to send the string to be printed direct to the printer. Note that this will pause your program execution until the printing is completed. To avoid this feature you will need to setup a separate process and pass the strings to be printed via a queue or global.		Second, you need to access the printer just as you would a normal serial device. In other words you must initialise the port (port 10 for LPT1) with the Serial Port Init VI and use the Serial Port Write VI to send the string to be printed direct to the printer. Note that this will pause your program execution until the printing is completed. To avoid this feature you will need to setup a separate process and pass the strings to be printed via a queue or global.

	If you want access to the line printer in a built application, then the same rules for other LabVIEW ini file settings should be followed (see "How do I include ini settings in my built application?").		If you want access to the line printer in a built application, then the same rules for other LabVIEW ini file settings should be followed (see "How do I include ini settings in my built application?")

	== Find a single character in a serial input stream. ==		== Find a single character in a serial input stream. ==

Mefistotelis: /* Using a Modem to Send Data */

2020-05-31T14:47:58Z

Using a Modem to Send Data

← Older revision		Revision as of 14:47, 31 May 2020
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	There are also commercial toolkits available and there is an article in the LabVIEW Technical Resource (LTR, Vol 5(1)) that deals with sending messages to a pager, but involves modem initialization and control aspects that would be useful in setting up modem communications.		There are also commercial toolkits available and there is an article in the LabVIEW Technical Resource (LTR, Vol 5(1)) that deals with sending messages to a pager, but involves modem initialization and control aspects that would be useful in setting up modem communications.

	~~[[Category:Flattening ref]]~~

	== Using a modem to send an audio message ==		== Using a modem to send an audio message ==

Mefistotelis: /* Using a Modem to Send Data */

2020-05-31T14:47:37Z

Using a Modem to Send Data

← Older revision		Revision as of 14:47, 31 May 2020
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	After this just clear a string and sit in a loop building a string with whatever comes in the serial port until you get a CR character. Then search the string for the substring, "CONNECT" (if attempting to access another modem). If that's not in there, then repeat the process until either that happens or you get a timeout.		After this just clear a string and sit in a loop building a string with whatever comes in the serial port until you get a CR character. Then search the string for the substring, "CONNECT" (if attempting to access another modem). If that's not in there, then repeat the process until either that happens or you get a timeout.

	Once the modems are synced, the data can be sent after flattening it to string type. Make sure that packets of data are sent and if there are integrity issues then perhaps a CRC checksum should be included in each packet. If you want to disconnect then send out an "ATH1" to command to hang the modem up and finally close the serial port.		Once the modems are synced, the data can be sent after [[Flattening\|flattening]] it to string type. Make sure that packets of data are sent and if there are integrity issues then perhaps a CRC checksum should be included in each packet. If you want to disconnect then send out an "ATH1" to command to hang the modem up and finally close the serial port.

	One fequently asked question is whether a WAV file can be played after initiating a dial out with a modem. No definitive answer has been posted, but it appears you would dial out as above. Instead of a CONNECT string response from the other modem, you could look at the return string which should contain the "RING" string when the modem is in verbose mode and dialing out. Once the RING string is not detected (or there are no other error messages) then it may be reasonable to suggest that someone/something has answered. How to play the WAV file is still an unanswered question apart from the inelegant method of then initiating playing the file out the soundcard lineout into the MIC of the modem.		One fequently asked question is whether a WAV file can be played after initiating a dial out with a modem. No definitive answer has been posted, but it appears you would dial out as above. Instead of a CONNECT string response from the other modem, you could look at the return string which should contain the "RING" string when the modem is in verbose mode and dialing out. Once the RING string is not detected (or there are no other error messages) then it may be reasonable to suggest that someone/something has answered. How to play the WAV file is still an unanswered question apart from the inelegant method of then initiating playing the file out the soundcard lineout into the MIC of the modem.
Line 36:		Line 36:

	There are also commercial toolkits available and there is an article in the LabVIEW Technical Resource (LTR, Vol 5(1)) that deals with sending messages to a pager, but involves modem initialization and control aspects that would be useful in setting up modem communications.		There are also commercial toolkits available and there is an article in the LabVIEW Technical Resource (LTR, Vol 5(1)) that deals with sending messages to a pager, but involves modem initialization and control aspects that would be useful in setting up modem communications.

			[[Category:Flattening ref]]

	== Using a modem to send an audio message ==		== Using a modem to send an audio message ==

Logmanoriginal: Mark page for cleanup

2020-05-08T13:35:06Z

Mark page for cleanup

← Older revision		Revision as of 13:35, 8 May 2020
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			{{cleanup}}
			{{wikify}}
			{{update}}
	== Access the IO ports under NT/2K ==		== Access the IO ports under NT/2K ==
	Unfortunately, or some would say fortunately, you cannot access the ports (using IN PORT and OUT PORT) directly under operating systems such as Windows NT and Windows 2000. To access the ports under these operating systems (and others like them) you need to download the AccessHW patch from NI's web site. Simply navigate to ni.com and enter "accesshw" in the search engine on the main page.		Unfortunately, or some would say fortunately, you cannot access the ports (using IN PORT and OUT PORT) directly under operating systems such as Windows NT and Windows 2000. To access the ports under these operating systems (and others like them) you need to download the AccessHW patch from NI's web site. Simply navigate to ni.com and enter "accesshw" in the search engine on the main page.

MichaelAivaliotis: added category

2007-09-27T06:41:45Z

added category

← Older revision		Revision as of 06:41, 27 September 2007
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	LabVIEW also allows direct access to the serial lines and can dial a modem using standard modem commands.		LabVIEW also allows direct access to the serial lines and can dial a modem using standard modem commands.

	[[Category:~~Uncategorized~~]]		[[Category:Hardware\|{{PAGENAME}}]]

Tcplomp: Typo

2007-09-21T04:10:37Z

Typo

← Older revision		Revision as of 04:10, 21 September 2007
Line 1:		Line 1:
	== Access the IO ports under NT/2K ==		== Access the IO ports under NT/2K ==
	Unfortunately, or some would say fortunately, you cannot access the ports (using IN PORT and OUT PORT) directly under operating systems ~~suh~~ as Windows NT and Windows 2000. To access the ports under these operating systems (and others like them) you need to download the AccessHW patch from NI's web site. Simply navigate to ni.com and enter "accesshw" in the search engine on the main page.		Unfortunately, or some would say fortunately, you cannot access the ports (using IN PORT and OUT PORT) directly under operating systems such as Windows NT and Windows 2000. To access the ports under these operating systems (and others like them) you need to download the AccessHW patch from NI's web site. Simply navigate to ni.com and enter "accesshw" in the search engine on the main page.

	== Printing to a line printer ==		== Printing to a line printer ==

Blackjacobins: /* Access the IO ports under NT/2K */

2007-09-20T20:49:50Z

Access the IO ports under NT/2K

← Older revision		Revision as of 20:49, 20 September 2007
Line 1:		Line 1:
	== Access the IO ports under NT/2K ==		== Access the IO ports under NT/2K ==
	Unfortunately, or some would say fortunately, you cannot access the ports (using IN PORT and OUT PORT) directly under operating systems suh as Windows NT and Windows 2000. To access the ~~port's~~ under these operating systems (and others like them) you need to download the AccessHW patch from NI's web site. Simply navigate to ni.com and enter "accesshw" in the search engine on the main page.		Unfortunately, or some would say fortunately, you cannot access the ports (using IN PORT and OUT PORT) directly under operating systems suh as Windows NT and Windows 2000. To access the ports under these operating systems (and others like them) you need to download the AccessHW patch from NI's web site. Simply navigate to ni.com and enter "accesshw" in the search engine on the main page.

	== Printing to a line printer ==		== Printing to a line printer ==

Blackjacobins: /* Access the IO ports under NT/2K */

2007-09-20T20:49:35Z

Access the IO ports under NT/2K

← Older revision		Revision as of 20:49, 20 September 2007
Line 1:		Line 1:
	== Access the IO ports under NT/2K ==		== Access the IO ports under NT/2K ==
	Unfortunately, or some would say fortunately, you cannot access the ~~port's~~ (using IN PORT and OUT PORT) directly under operating systems suh as Windows NT and Windows 2000. To access the port's under these operating systems (and others like them) you need to download the AccessHW patch from NI's web site. Simply navigate to ni.com and enter "accesshw" in the search engine on the main page.		Unfortunately, or some would say fortunately, you cannot access the ports (using IN PORT and OUT PORT) directly under operating systems suh as Windows NT and Windows 2000. To access the port's under these operating systems (and others like them) you need to download the AccessHW patch from NI's web site. Simply navigate to ni.com and enter "accesshw" in the search engine on the main page.

	== Printing to a line printer ==		== Printing to a line printer ==

MichaelAivaliotis at 10:09, 3 April 2007

2007-04-03T10:09:49Z

← Older revision		Revision as of 10:09, 3 April 2007
Line 88:		Line 88:

	LabVIEW also allows direct access to the serial lines and can dial a modem using standard modem commands.		LabVIEW also allows direct access to the serial lines and can dial a modem using standard modem commands.

			[[Category:Uncategorized]]