Embedded Processors and Peripherals

[sxl630828191]

Hey ,everyone

        I am puzzled with a problem.

        In the C project, I can include stdio.h. But files in the bsp cannot. For example , at the beginning of the file xemacliteif.c,

        there are two sentence : #include <stdio.h>
                                                     #include <string.h>

        But the SDK enviroment shows that Unresolved inclusion: <string.h>  And so does <stdio.h>  .

        Anybody can help me?

[rcingham]

Regarding stdio.h, this is the header for functions that access the 'standard input', 'standard output', and 'standard error' streams. Although these are mapped to physical resources by default for a standard computer (such as your PC), they are not for an FPGA. Therefore the header file, and the underlying functions, do not exist, and so cannot be referenced.

[sxl630828191]

Hey,

       Thanks for your reply.

       I am just planning to use xil_printf() to show whether the project did the function or not .

       For exmple, I added xil_printf("xemacliteif_init\r\n"); in the xemacliteif_init() function. And when debugging with the SDK ,

It really exacute this function , but never print anything at the uart terminal. And there are two sentences at the beginning of

the file containning the function xemacliteif_init()  :#include <stdio.h> #include <string.h>..

       How can i debug the project in this way?

[rcingham]

Try
#include "stdio.h"
instead and report back...

[sxl630828191]

Hey,

      I have changed <> to " " . But it doesn't work at all.

      The  file cannot include it .I clicked the stdio.h line on the outline window, it shows that.  Why can not it find the file?

[rcingham]

My limited expertise on this subject is now exhausted.

[jmdavid1789]

<stdio.h> and <string.h> belong to the standard library (AKA libc.a).

Your BSP stores the library (see: C:\your_workspace\your_bsp\microblaze_0\lib\libc.a)
but your application refers to it by linking to the library (see: Your_application->C/C++ building settings->Microblaze gcc linker->Software Platform->Software Platform library path->../../your_bsp/microblaze_0/lib.

So either your BSP does not have the library or your application does not refer to it or it refers to it but the path is wrong.

[sxl630828191]

Thanks for your reply at all.

[sxl630828191]

Hey,

        I have to say you misunderstood my words.

        I have checked what you say on my project, they are all correct.

        In the C project, I can include the "stdio.h" normally. while in the bsp/microblaze/libsrc/...   , stdio.h cannot be included

into it . Just as the picture I attached above : the SDK can not find it. I just want to add some xil_printf() sentence for debug

        I am puzzled.

[mmonforte]

Hello,

I had the same identical problem (using SDK 14.1):

for me the solution was upgrading to 14.2.

Hope it helps,

Michele