Re: R: [foxboard] USB KEY Error read file

[remytache]

--- In foxboard@yahoogroups.com, giovanni manzoni <giovy_bg2...@...> 
wrote:
>
> Hi, 
> But kernel/linux, allow read a file big much more than the the free 
space in ram + swap space???
>

Hi

No ! I read only 1024 bytes by 1024 the entire file. Once the 1024 
bytes read, they are sent to an FPGA via the FoxBonne and then 
destroyed. 

see sample of code

#define READ_BLOCK_DATA   1024

bool transfert_satet_file(char *filename)
{
        size_t result;
        long data_count = 0;
        short buffer_data[READ_BLOCK_DATA];
        FILE *stream = NULL;
        size_t result;

        //ouverture du fichier
        stream = fopen(p_element->filename, "r");
        if (stream != NULL)
        {
                fseek(stream, 0, SEEK_SET);
                data_count = 0;
                while (!feof(stream))
                {
                                result = fread(buffer_data, sizeof
(short), READ_BLOCK_DATA, stream);
                                if (result != data_read_count)
                                {
                                        printf("(%ld -> %ld)\n", 
result, data_read_count);
                                }
                                //write to FPGA
                                //lp_fox->set_tab_reg(FOX_REG_MEMORY, 
buffer_data, result);
                                data_count += result;
                }
                fclose(stream);
        }
}