Thread: Converting char array to int16 type

Hello guys,

i know this is a very old question with millions of solutions and believe me i have tried some of those solutions but the result is not coming up.

I am trying to convert a char buffer[1024] with raw data to int 16 buffer2[1024] which is supposed to have hex data (0x01, 0x02 kind of format).

code i am trying with is:

Code:

     char temp_buffer[1024];
     block_size = sizeof(temp_buffer);

     num_blocks = sizeof(char);


     Status =  mount(0, &myfsObject);
     if(Status != DAVEApp_SUCCESS)
     {
     while(1);
     }

     ptr = fopen("test1.raw", "r+");

     fseek(ptr, 0, SEEK_SET);

     result = fread(&temp_buffer, num_blocks, block_size, ptr);

for (i=0;i<1024;i++)
    {

        UTXBuf1[i] =  temp_buffer[i] - '0';
    }


       ptr = fopen("test2.txt", "w+");
              fseek(ptr, 0, SEEK_SET);

              block_size = sizeof(UTXBuf1);
              //num_blocks = sizeof(char);
              fwrite(&UTXBuf1, 1, block_size, ptr);
              status1 = fclose(ptr);

As you can figure out that i am verifying the data of resultant buffer by creating a new file and writing data to it.

The result which i got is:

Code:

H    üÿ  H   üÿ  H    üÿ  H    üÿ  H    üÿ  H   üÿ  H   üÿ  H    üÿ

If something is missing then please let me know.

Any help would be appreciated.

Thanks

thanks for your prompt response.

i do not really want to print the output in a file, it's just for the verification purpose.

Another thing is, Yes i want to convert the char to int16 because the buffer which will be processed further is int16 type.

But when i myself give hex inputs to the int16 buffer (with out any external file reading) it works perfect but when i give input by reading a raw/binary file it gives nothing

Anyways, i would like to share the though of "simple assignment loop" you have.