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hi I want to print all my outputs in a file, by opening a file in my C application. But this codewarrior is compiling successfully but unable to link . Iam getting linking errors like Link Error : Undefined : "Ffopen" Referenced from "Fmain" in main.c Link Error : Undefined : "Ffprintf" Referenced from "Fmain" in main.c Link failed. what i must do to open a file through my C application and print my outputs in that file. Actually where is the problem? Is this codewarrior wont support file management. Suggest me a way . Thanking you all in advance, Yours Sincerely, Siva Swaroop Marrapu |
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Regarding file management
Started by ●October 1, 2002
Reply by ●October 1, 20022002-10-01
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swaroop wrote: > I want to print all my outputs in a file, by opening a file in my C > application. But this codewarrior is compiling successfully but > unable to link . Iam getting linking errors like > > Link Error : Undefined : "Ffopen" > Referenced from "Fmain" in main.c > > Link Error : Undefined : "Ffprintf" > Referenced from "Fmain" in main.c > > Link failed. > > what i must do to open a file through my C application and print my > outputs in that file. Actually where is the problem? Is this > codewarrior wont support file management. Suggest me a way . The reason you are getting these link errors is because you are not using the stationery that includes host i/o. I'm not sure what version of CodeWarrior for DSP you are using, but in CodeWarrior for DSP R5.0, the hardware targeted stationery comes with the following targets pre-defined: external RAM (mode 3) ext RAM (mode 3) w/hostio flash pxROM w/int xRAM flash pxROM w/ext xRAM flash pROM xROM-to-RAM build all The target ext RAM (mode 3) w/hostio is the only target that includes support for the majority of stdio calls. The other targets include a minimal "thin" printf, but other stdio is stripped out to maximize performance. This is discussed in the Targeting_DSP56800.pdf on page DSP-256, I've included the text below: MSL C 56800.lib This library provides standard C library support without standard I/O. A minimal "thin" printf is provided but other stdio is stripped out in order to maximize performance. The printf sends characters to the CodeWarrior console window via the debugger. Use this library for when you need minimal printf support for debugging and to save space. MSL C 56800 host I/O.lib This library adds ANSI/ISO standard I/O support through the debugger. The standard C library I/O is supported, including stdio.h, sdderr.h, and stdin.h. Use this library when you want to perform stdio calls, including CodeWarrior console stdout/stdin, and host machine file I/O, for debugging. The Targeting_DSP56800 goes on to discuss file i/o in a little more detail on page DSP-257. Hope this info helps! John via Ron -- Do what you do best and let Metrowerks do the rest !! http://www.metrowerks.com/MW/Services/SSG/default.htm Metrowerks, maker of CodeWarrior - "Software Starts Here" Ron Liechty - - http://www.metrowerks.com |
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Reply by ●October 1, 20022002-10-01
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If you use older version of the CodeWarrior, or would like to have I/O functionality with other CW stationeries, you can use SDK FileIO utilities, which will add some additional code to your application, and will perform File I/O functionality over serial port (you can read associated SDK documentation). CodeWarrior I/O, on the other hand, uses JTAG to perform this task, so it will not bring additional code into your application, but it will run much slower vs. SDK FileIO's serial communication. Sincerely, Leonard N. Elevich Motorola DSPO -----Original Message----- From: MW Ron [mailto:] Sent: Tuesday, October 01, 2002 10:49 AM To: Subject: [motoroladsp] Re: Regarding file management swaroop wrote: > I want to print all my outputs in a file, by opening a file in my C > application. But this codewarrior is compiling successfully but > unable to link . Iam getting linking errors like > > Link Error : Undefined : "Ffopen" > Referenced from "Fmain" in main.c > > Link Error : Undefined : "Ffprintf" > Referenced from "Fmain" in main.c > > Link failed. > > what i must do to open a file through my C application and print my > outputs in that file. Actually where is the problem? Is this > codewarrior wont support file management. Suggest me a way . The reason you are getting these link errors is because you are not using the stationery that includes host i/o. I'm not sure what version of CodeWarrior for DSP you are using, but in CodeWarrior for DSP R5.0, the hardware targeted stationery comes with the following targets pre-defined: external RAM (mode 3) ext RAM (mode 3) w/hostio flash pxROM w/int xRAM flash pxROM w/ext xRAM flash pROM xROM-to-RAM build all The target ext RAM (mode 3) w/hostio is the only target that includes support for the majority of stdio calls. The other targets include a minimal "thin" printf, but other stdio is stripped out to maximize performance. This is discussed in the Targeting_DSP56800.pdf on page DSP-256, I've included the text below: MSL C 56800.lib This library provides standard C library support without standard I/O. A minimal "thin" printf is provided but other stdio is stripped out in order to maximize performance. The printf sends characters to the CodeWarrior console window via the debugger. Use this library for when you need minimal printf support for debugging and to save space. MSL C 56800 host I/O.lib This library adds ANSI/ISO standard I/O support through the debugger. The standard C library I/O is supported, including stdio.h, sdderr.h, and stdin.h. Use this library when you want to perform stdio calls, including CodeWarrior console stdout/stdin, and host machine file I/O, for debugging. The Targeting_DSP56800 goes on to discuss file i/o in a little more detail on page DSP-257. Hope this info helps! John via Ron -- Do what you do best and let Metrowerks do the rest !! http://www.metrowerks.com/MW/Services/SSG/default.htm Metrowerks, maker of CodeWarrior - "Software Starts Here" Ron Liechty - - http://www.metrowerks.com _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: To Post: To Leave: Archives: http://www.yahoogroups.com/group/motoroladsp More Groups: http://www.dsprelated.com/groups.php3 ">http://docs.yahoo.com/info/terms/ |
