Problem building avr c program with .h and .c files.

[noumenonquest]

Problem building avr c program with a header file and a separate source code file(.c) to define the functions that are in the header file.

[Step 1] Check Toolchain.
[Step 2] Find all source files.
[Step 3] Start building.
[25.0%] Compiling main.c...
[50.0%] Compiling USART.c...
[75.0%] Linking everything together...
c:\users\user\appdata\local\arduino15\packages\arduino\tools\avr-gcc\4.9.2-atmel3.5.3-arduino2\bin\../lib/gcc/avr/4.9.2/../../../../avr/bin/ar.exe: C:/Users/user/AppData/Local/Arduino15/build/example/core/core.a: No such file or directory
[Build] Error occurred.

[Robot-Will]

I need the files to test, I have no experience about avr projects. Thanks.

[Robot-Will]

I fixed. Thanks.

[Build] D:/Documents/Arduino/avr01...
[Step 1] Check Toolchain.
[Step 2] Find all source files.
[Step 3] Start building.
[25.0%] Compiling avr01.ino.cpp...
[50.0%] Compiling USART.c...
[75.0%] Linking everything together...
[100.0%] Creating binary files...
Sketch uses 292 bytes (0.1%) of program storage space. Maximum is 253,952 bytes.
Global variables use 0 bytes (0.0%) of dynamic memory, leaving 8,192 bytes for local variables. Maximum is 8,192 bytes.
Build done.

[noumenonquest]

now i get the following error.

[Step 1] Check Toolchain.
[Step 2] Find all source files.
[Step 3] Start building.
[20.0%] Compiling ...
avr-g++: error: : No such file or directory
avr-g++: fatal error: no input files
compilation terminated.
[Build] Error occurred.

you can use Elliot Williams examples. place the following files in one folder.

main.c

#include <avr/io.h>
#include <util/delay.h>
#include "USART.h"

int main(void) {
  char serialCharacter;

  // -------- Inits --------- //
  DDRB = 0xFF;                            /* set up LEDs for output */
  initUSART();
  printString("Hello World!\r\n");                          /* to test */

  // ------ Event loop ------ //
  while (1) {

    serialCharacter = receiveByte();
    transmitByte(serialCharacter);
    PORTB = serialCharacter;
                           /* display ascii/numeric value of character */

  }                                                  /* End event loop */
  return 0;
}

USART.h

USART.c

[Robot-Will]

Thanks for your sketch, I fixed.

[Build] D:/Documents/Arduino/main...
[Step 1] Check Toolchain.
[Step 2] Find all source files.
[Step 3] Start building.
[25.0%] Compiling main.c...
[50.0%] Compiling USART.c...
[75.0%] Linking everything together...
[100.0%] Creating binary files...
Sketch uses 266 bytes (0.8%) of program storage space. Maximum is 32,256 bytes.
Global variables use 16 bytes (0.8%) of dynamic memory, leaving 2,032 bytes for local variables. Maximum is 2,048 bytes.
Build done.

[noumenonquest]

Thanks.