Post by thread:Binary transfer from Pic to PC

I have written a program which read all adresses in a 24C16 I2C EEPROM and sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the Windows Terminal program for receiving the data. But when I receive the data as a text file (ASCII) there is a probelm with the control characters CR, FF, LF etc. They are not read as data. Can I somehow receive the data as a binary file? I have tried to use the various protocols for this purpose, but it always ends out with a failure. What do I need to do in my Pic-code to support fx. the Xmodem or the Kermit protocol? I hope you are able to help me ! With kind regards GDK-SSJ - Steen Schelle Jensen Dept.: 1545 Internet e-mail: spam_OUTssjensenTakeThisOuTgrundfos.com

Steen Jensen wrote: > > I have written a program which read all adresses in a 24C16 I2C EEPROM and > sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the Windows > Terminal program for receiving the data. But when I receive the data as a > text file (ASCII) there is a probelm with the control characters CR, FF, LF > etc. They are not read as data. Can I somehow receive the data as a binary > file? I have tried to use the various protocols for this purpose, but it > always ends out with a failure. What do I need to do in my Pic-code to > support fx. the Xmodem or the Kermit protocol? I hope you are able to help > me ! > > With kind regards > GDK-SSJ - Steen Schelle Jensen > Dept.: 1545 > Internet e-mail: .....ssjensenKILLspam@spam@grundfos.com I did have problems with the '\n' (CR=ASCII 12), but i was using the telix! There is option that ADD LINE FEED THAT CR allowed the cursor jumps to the next line and in the first columm! Miguel.

cr=ascii 13 Peter ---------- > From: WF AUTOMACAO <wfKILLspamAMBIENTE.COM.BR> > To: .....PICLISTKILLspam.....MITVMA.MIT.EDU > Subject: Re: Binary transfer from Pic to PC > Date: Monday, February 23, 1998 3:15 PM > > Steen Jensen wrote: > > > > I have written a program which read all adresses in a 24C16 I2C EEPROM and > > sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the Windows > > Terminal program for receiving the data. But when I receive the data as a > > text file (ASCII) there is a probelm with the control characters CR, FF, LF > > etc. They are not read as data. Can I somehow receive the data as a binary > > file? I have tried to use the various protocols for this purpose, but it > > always ends out with a failure. What do I need to do in my Pic-code to > > support fx. the Xmodem or the Kermit protocol? I hope you are able to help {Quote hidden}> > me ! > > > > With kind regards > > GDK-SSJ - Steen Schelle Jensen > > Dept.: 1545 > > Internet e-mail: EraseMEssjensenspam_OUTTakeThisOuTgrundfos.com > > I did have problems with the '\n' (CR=ASCII 12), but i was using the > telix! > > There is option that ADD LINE FEED THAT CR allowed the cursor jumps to > the next line and in the first columm! > > Miguel.

You said you were using the Telix. I don't know Telix. Is that a Terminal program ? Well I'm off duty for today Regards Steen Jensen From: wfspam_OUTAMBIENTE.COM.BR on 23-02-98 12:15 PST Please respond to @spam@PICLISTKILLspamMITVMA.MIT.EDU To: KILLspamPICLISTKILLspamMITVMA.MIT.EDU cc: (bcc: Steen Schelle Jensen/Sales/DK_GDK/Grundfos) Subject: Re: Binary transfer from Pic to PC Steen Jensen wrote: > > I have written a program which read all adresses in a 24C16 I2C EEPROM and > sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the Windows > Terminal program for receiving the data. But when I receive the data as a > text file (ASCII) there is a probelm with the control characters CR, FF, LF > etc. They are not read as data. Can I somehow receive the data as a binary > file? I have tried to use the various protocols for this purpose, but it > always ends out with a failure. What do I need to do in my Pic-code to > support fx. the Xmodem or the Kermit protocol? I hope you are able to help > me ! > > With kind regards > GDK-SSJ - Steen Schelle Jensen > Dept.: 1545 > Internet e-mail: RemoveMEssjensenTakeThisOuTgrundfos.com I did have problems with the '\n' (CR=ASCII 12), but i was using the telix! There is option that ADD LINE FEED THAT CR allowed the cursor jumps to the next line and in the first columm! Miguel.

Why not convert to ASCII-coded hex before transfer? /Morgan At 14:39 1998-02-23 +0100, you wrote: {Quote hidden}>I have written a program which read all adresses in a 24C16 I2C EEPROM and >sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the Windows >Terminal program for receiving the data. But when I receive the data as a >text file (ASCII) there is a probelm with the control characters CR, FF, LF >etc. They are not read as data. Can I somehow receive the data as a binary >file? I have tried to use the various protocols for this purpose, but it >always ends out with a failure. What do I need to do in my Pic-code to >support fx. the Xmodem or the Kermit protocol? I hope you are able to help >me ! > > >With kind regards >GDK-SSJ - Steen Schelle Jensen >Dept.: 1545 >Internet e-mail: spamBeGonessjensenspamBeGonegrundfos.com > > / Morgan Olsson, MORGANS REGLERTEKNIK, SE-277 35 KIVIK, Sweden \ \ TakeThisOuTmrtEraseMEspam_OUTiname.com, ph: +46 (0)414 70741; fax +46 (0)414 70331 /

The xmodem protocol is fairly simple to implement , did it once in basic You can find a description of the protocol on it's only a page long http://www.strangecreations.com/library/x2ftp/formats.htm under xmodem.zip Peter Steen Jensen wrote: > > I have written a program which read all adresses in a 24C16 I2C EEPROM and > sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the Windows > Terminal program for receiving the data. But when I receive the data as a > text file (ASCII) there is a probelm with the control characters CR, FF, LF > etc. They are not read as data. Can I somehow receive the data as a binary > file? I have tried to use the various protocols for this purpose, but it > always ends out with a failure. What do I need to do in my Pic-code to > support fx. the Xmodem or the Kermit protocol? I hope you are able to help > me ! > > With kind regards > GDK-SSJ - Steen Schelle Jensen > Dept.: 1545 > Internet e-mail: RemoveMEssjensenTakeThisOuTgrundfos.com

One catch to this xmodem only works with both send and receive hard/software (preferred is full duplex) Peter van Hoof ---------- > From: Peter van Hoof <pvhEraseME.....microserve.net> > To: EraseMEPICLISTMITVMA.MIT.EDU > Subject: Re: Binary transfer from Pic to PC > Date: Monday, February 23, 1998 10:40 AM > > The xmodem protocol is fairly simple to implement , did it once in basic > You can find a description of the protocol on it's only a page long > > http://www.strangecreations.com/library/x2ftp/formats.htm under xmodem.zip {Quote hidden}> > > Peter > > Steen Jensen wrote: > > > > I have written a program which read all adresses in a 24C16 I2C EEPROM > and > > sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the > Windows > > Terminal program for receiving the data. But when I receive the data as > a > > text file (ASCII) there is a probelm with the control characters CR, FF, > LF > > etc. They are not read as data. Can I somehow receive the data as a > binary > > file? I have tried to use the various protocols for this purpose, but it > > always ends out with a failure. What do I need to do in my Pic-code to > > support fx. the Xmodem or the Kermit protocol? I hope you are able to > help > > me ! > > > > With kind regards > > GDK-SSJ - Steen Schelle Jensen > > Dept.: 1545 > > Internet e-mail: RemoveMEssjensenEraseMEEraseMEgrundfos.com >

This will double the file size on transfer. All that needs to be done is to filter the stream as it is received from the PIC and display and/or save the characters desired. A terminal program may have to be created (VB using microsoft's comm control). Rich At 03:35 PM 2/23/98 +0100, you wrote: {Quote hidden}>Why not convert to ASCII-coded hex before transfer? >/Morgan > >At 14:39 1998-02-23 +0100, you wrote: >>I have written a program which read all adresses in a 24C16 I2C EEPROM and >>sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the Windows >>Terminal program for receiving the data. But when I receive the data as a >>text file (ASCII) there is a probelm with the control characters CR, FF, LF >>etc. They are not read as data. Can I somehow receive the data as a binary >>file? I have tried to use the various protocols for this purpose, but it >>always ends out with a failure. What do I need to do in my Pic-code to >>support fx. the Xmodem or the Kermit protocol? I hope you are able to help >>me ! >> >> >>With kind regards >>GDK-SSJ - Steen Schelle Jensen >>Dept.: 1545 >>Internet e-mail: RemoveMEssjensenspam_OUTKILLspamgrundfos.com >> >> >/ Morgan Olsson, MORGANS REGLERTEKNIK, SE-277 35 KIVIK, Sweden \ >\ RemoveMEmrtTakeThisOuTspaminame.com, ph: +46 (0)414 70741; fax +46 (0)414 70331 / > > ========================================= = Abolish the Income Tax! Fire the IRS! = = http://www.nrst.org/ = =========================================

Oh, I did not realize it was much data. Did not read the question thru. Is it maybe possible to use DOS "copy /b COM1: file" (or how it is) command ? Will it exit om CTRL-Z code recieved, switch /b stated? If not, can we end recieving using CTRL-C from keyboard, or if not rin un windows dos-window and kill it from windows? /Morgan At 10:35 1998-02-23 -0800, Rich wrote: >This will double the file size on transfer. > >All that needs to be done is to filter the stream as it is received from the >PIC and display and/or save the characters desired. >A terminal program may have to be created (VB using microsoft's comm control). {Quote hidden}> >Rich > >At 03:35 PM 2/23/98 +0100, you wrote: >>Why not convert to ASCII-coded hex before transfer? >>/Morgan >> >>At 14:39 1998-02-23 +0100, you wrote: >>>I have written a program which read all adresses in a 24C16 I2C EEPROM and >>>sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the Windows >>>Terminal program for receiving the data. But when I receive the data as a >>>text file (ASCII) there is a probelm with the control characters CR, FF, LF >>>etc. They are not read as data. Can I somehow receive the data as a binary >>>file? I have tried to use the various protocols for this purpose, but it >>>always ends out with a failure. What do I need to do in my Pic-code to >>>support fx. the Xmodem or the Kermit protocol? I hope you are able to help >>>me ! >>> >>> >>>With kind regards >>>GDK-SSJ - Steen Schelle Jensen >>>Dept.: 1545 >>>Internet e-mail: EraseMEssjensenspamspamBeGonegrundfos.com >>> >>> >>/ Morgan Olsson, MORGANS REGLERTEKNIK, SE-277 35 KIVIK, Sweden \ >>\ RemoveMEmrtKILLspaminame.com, ph: +46 (0)414 70741; fax +46 (0)414 70331 / >> >> > >========================================= >= Abolish the Income Tax! Fire the IRS! = >= http://www.nrst.org/ = >========================================= > > / Morgan Olsson, MORGANS REGLERTEKNIK, SE-277 35 KIVIK, Sweden \ \ mrtSTOPspamspam_OUTiname.com, ph: +46 (0)414 70741; fax +46 (0)414 70331 /

I do not think you need to implement any fancy protocols. From the PC you send a char which tells the PIC to dump the contents of the eeprom. I would write the Software/Firmware to handle fixed sized blocks and use hardware handshaking (if your data can range from 0 to 255 you can forget about software handshaking [xon-xoff]). Later add a CRC byte to verify each block. The PC collects the data, stores it on disk or prints the printable characters to a terminal window or both. The Windows95 API will support up to 19,200 bps so I would kick 1200 bps up several notches. Other available controls can run much faster e.g., 115,200 bps and beyond -- limited by the PC's uart (16550A = faster). I don't know what it would take to jerk around an existing modem package to make it work so I suggested you write your own. In Visual Basic you drop a control on a form, set the properties you like, write a few lines of code and you should be able to send and receive characters within the hour. BTW: ASCII and Linefeed modes have limited usefulness so binary transfers are most often supported. Rich At 11:11 PM 2/23/98 +0100, you wrote: {Quote hidden}>Oh, I did not realize it was much data. Did not read the question thru. >Is it maybe possible to use DOS "copy /b COM1: file" (or how it is) command ? >Will it exit om CTRL-Z code recieved, switch /b stated? >If not, can we end recieving using CTRL-C from keyboard, or if not rin un >windows dos-window and kill it from windows? >/Morgan > >At 10:35 1998-02-23 -0800, Rich wrote: >>This will double the file size on transfer. >> >>All that needs to be done is to filter the stream as it is received from the >>PIC and display and/or save the characters desired. >>A terminal program may have to be created (VB using microsoft's comm >control). >> >>Rich >> >>At 03:35 PM 2/23/98 +0100, you wrote: >>>Why not convert to ASCII-coded hex before transfer? >>>/Morgan >>> >>>At 14:39 1998-02-23 +0100, you wrote: >>>>I have written a program which read all adresses in a 24C16 I2C EEPROM and >>>>sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the Windows >>>>Terminal program for receiving the data. But when I receive the data as a >>>>text file (ASCII) there is a probelm with the control characters CR, FF, LF >>>>etc. They are not read as data. Can I somehow receive the data as a binary >>>>file? I have tried to use the various protocols for this purpose, but it >>>>always ends out with a failure. What do I need to do in my Pic-code to >>>>support fx. the Xmodem or the Kermit protocol? I hope you are able to help >>>>me ! >>>> >>>> >>>>With kind regards >>>>GDK-SSJ - Steen Schelle Jensen >>>>Dept.: 1545 >>>>Internet e-mail: spamBeGonessjensenSTOPspamEraseMEgrundfos.com >>>> >>>> >>>/ Morgan Olsson, MORGANS REGLERTEKNIK, SE-277 35 KIVIK, Sweden \ >>>\ KILLspammrtspamBeGoneiname.com, ph: +46 (0)414 70741; fax +46 (0)414 70331 / >>> >>> >> >>========================================= >>= Abolish the Income Tax! Fire the IRS! = >>= http://www.nrst.org/ = >>========================================= >> >> >/ Morgan Olsson, MORGANS REGLERTEKNIK, SE-277 35 KIVIK, Sweden \ >\ EraseMEmrtEraseMEiname.com, ph: +46 (0)414 70741; fax +46 (0)414 70331 / > > ========================================= = Abolish the Income Tax! Fire the IRS! = = http://www.nrst.org/ = =========================================

Morgan- no need to get too complicated with this one. Qbasic is included free with MS-DOS through NT 4.0 (although I don't know how well com ports work under NT from Basic.) Included at the end of this post is some pseudocode for a quick basic program that will do what you are looking for. I call it pseudocode because I don't recall the exact permutation you must use to get bytes from the serial port, but I think INPUT # will work. Perhaps a GET instead. Note that if you send to the PIC through file #1 using a PRINT # command, be sure to append a semicolon (;) to the end of the line (PRINT 1, a$;) otherwise the PC will send a CR and a LF for every string you send. I obviously haven't tested this program with your hardware, but I've run programs nearly identical to this in the past and once you have the basic framework in place and working, it's hard to break. FYI copy the qbasic code, save it as "comms.bas" for example, then execute "qbasic comms.bas" from a command prompt. Brian ---beginning qbasic code--- DIM fromrs232 AS INTEGER DIM count AS INTEGER CONST numbytes = 1000 OPEN "com1: 1200,N,8,1" FOR RANDOM AS #1 OPEN "binary.out" FOR RANDOM AS #2 LEN = 2 'len says each record is 1 byte long OPEN "ascii.out" FOR OUTPUT AS #3 'ascii output for easy usage in other programs FOR count = 1 TO numbytes 'first get the data INPUT #1,fromrs232 'now put the data in the binary file PUT #2, count, fromrs232 'just for an exercise, also put it in a text fi PRINT #3, fromrs232 PRINT count NEXT count CLOSE 'with no arguments, closes all files ---end qbasic code--- <snip> >>>>I have written a program which read all adresses in a 24C16 I2C EEPROM and >>>>sends the data to a PC via RS232 (8,N,1 1200 Baud). I have used the Windows >>>>Terminal program for receiving the data. But when I receive the data as a >>>>text file (ASCII) there is a probelm with the control characters CR, FF, LF >>>>etc. They are not read as data. Can I somehow receive the data as a binary >>>>file? I have tried to use the various protocols for this purpose, but it >>>>always ends out with a failure. What do I need to do in my Pic-code to >>>>support fx. the Xmodem or the Kermit protocol? I hope you are able to help >>>>me ! <snip>

Morgan Olsson wrote: > Is it maybe possible to use DOS "copy /b COM1: file" (or how it is) > command ? Sounds plausible. > Will it exit om CTRL-Z code recieved, switch /b stated? Not if you use "/b". > If not, can we end recieving using CTRL-C from keyboard, Mmmm. Probably... > or if not run under windows dos-window and kill it from windows? Not so good. May lose characters in buffers, lose sectors ... > At 10:35 1998-02-23 -0800, Rich wrote: >>This will double the file size on transfer. So what? Does this matter? Hex files in Mororola (S19) or Intel (:) format can be examined, altered, patched, spliced... >>A terminal program may have to be created (VB using microsoft's comm >> control). Can do that too, but only if ^C won't abort the "copy" command cleanly. Cheers, Paul B.