Forum Discussion
Altera_Forum
Honored Contributor
21 years agoAbout host file system
I used the altera host file system to open a file .mp3,, is this a legal operation or not? if it is legal then why [[FILE *hostfile =fopen ("/mnt/host/song.mp3","rb");]] return NULL!! can any...
Altera_Forum
Honored Contributor
15 years ago --- Quote Start --- I recommend becoming familar with and trying out this example: http://www.alterawiki.com/wiki/host_file_system If that example fails the next logical step would be to have the software attempt to write a file to the file system and then searching the host for that file (so make it a very unique name). --- Quote End --- I have the same problem but I'm using a Cyclone 3c25 FPGA and I'm not using any CFI , only on-chip memory. I've pasted the txt file I want to communicate via jtag uart with in my project folder but it's till doesnt work. Here's an example of the code: char *msg = “hello world”; FILE *fp; fp = fopen (“/mnt/host/test.txt”, “w”); if (fp) { fprintf(fp, “%s”,msg); fclose (fp); } But it gives me errors such as: Compiling topavalon.c... ../topavalon.c: In function `main': ../topavalon.c:33: error: stray '\147' in program ../topavalon.c:33: error: `hello' undeclared (first use in this function) ../topavalon.c:33: error: (Each undeclared identifier is reported only once ../topavalon.c:33: error: for each function it appears in.) ../topavalon.c:33: error: syntax error before "world" ../topavalon.c:33: error: stray '\148' in program ../topavalon.c:35: error: stray '\147' in program ../topavalon.c:35: error: syntax error before '/' token ../topavalon.c:35: error: stray '\148' in program ../topavalon.c:35: error: stray '\147' in program ../topavalon.c:35: error: stray '\148' in program ../topavalon.c:38: error: stray '\147' in program ../topavalon.c:38: error: syntax error before '%' token ../topavalon.c:38: error: stray '\148' in program ../topavalon.c:73: warning: implicit declaration of function `floor' ../topavalon.c:33: warning: unused variable `msg' make: *** [obj/topavalon.o] Error 1 Build completed in 10.312 seconds The software component (mount point) was added as mnt/host, so what could be the problem? Please help...Thanks