Re: STM32 Standard Peripheral Library in eCos

Hello Oleg,

On Wednesday 18 of June 2014 12:39:04 Oleg Uzenkov wrote:
[snip]
> > IMHO STM32 Standard Peripheral Library doesn't fit to any driver 
> > oriented OS but
> > due to fact that it exists some system just incorporate it as it i.e. 
> > agreed for its drawbacks.
> Please, could you name some OS that incorporate it? 
E.g. FreeRTOS.

> Does anyone know of any examples using MMC SPI driver in ecos to interface
> SD card (any platform)? I would appreciate any links or sample code.
#include <pkgconf/system.h>
#ifdef CYGPKG_DEVS_DISK_MMC
#include <pkgconf/io_fileio.h>
#include <pkgconf/fs_fat.h>
#endif

#include <cyg/infra/cyg_type.h>
#include <cyg/infra/testcase.h>           // Test macros
#include <cyg/infra/cyg_ass.h>            // Assertion macros
#include <cyg/infra/diag.h>               // Diagnostic output
#include <fcntl.h>
#include <sys/stat.h>
#include <errno.h>
#include <string.h>
#include <dirent.h>
#include <stdio.h>

#include <cyg/hal/hal_arch.h>             // CYGNUM_HAL_STACK_SIZE_TYPICAL
#include <cyg/hal/hal_if.h>
#include <cyg/kernel/kapi.h>
#include <string.h>
#include CYGHWR_MEMORY_LAYOUT_H
#ifdef CYGPKG_NET_LWIP
#include <lwip.h>
#endif // CYGPKG_NET_LWIP
#ifdef CYGPKG_DEVS_DISK_MMC
#include <cyg/fileio/fileio.h>
#include <cyg/fs/fatfs.h>
#endif


externC int hello_world(void);
void do_version (void);

#ifdef CYGPKG_DEVS_DISK_MMC

#ifdef CYGPKG_DEVS_SPI_CORTEXM_STM32
#include <cyg/io/spi_stm32.h>
CYG_DEVS_SPI_CORTEXM_STM32_DEVICE (
    cyg_spi_mmc_dev0, 3, 0, false, 0, 0, 5000000, 1, 1, 1
);
#else
#error "Needed SPI connection to MMC card"
#endif

void checkcwd( const char *cwd )
{
    static char cwdbuf[PATH_MAX];
    char *ret;

    ret = getcwd( cwdbuf, sizeof(cwdbuf));
    if( ret == NULL ) diag_printf("Error getcwd\n");

    if( strcmp( cwdbuf, cwd ) != 0 )
    {
        diag_printf( "cwdbuf %s cwd %s\n",cwdbuf, cwd );
        diag_printf( "Current directory mismatch");
    }
}
static void listdir( char *name, int statp, int numexpected, int *numgot )
{
    int err;
    DIR *dirp;
    int num=0;

    diag_printf("<INFO>: reading directory %s\n",name);

    dirp = opendir( name );
    if( dirp == NULL ) diag_printf("Can't opendir\n");

    for(;;)
    {
        struct dirent *entry = readdir( dirp );

        if( entry == NULL )
            break;
        num++;
        diag_printf("<INFO>: entry %14s",entry->d_name);
#ifdef CYGPKG_FS_FAT_RET_DIRENT_DTYPE
        diag_printf(" d_type %2x", entry->d_type);
#endif
        if( statp )
        {
            char fullname[PATH_MAX];
            struct stat sbuf;

            if( name[0] )
            {
                strcpy(fullname, name );
                if( !(name[0] == '/' && name[1] == 0 ) )
                    strcat(fullname, "/" );
            }
            else fullname[0] = 0;
            
            strcat(fullname, entry->d_name );
            
            err = stat( fullname, &sbuf );
            if( err < 0 )
            {
                if( errno == ENOSYS )
                    diag_printf(" <no status available>");
                else diag_printf( "stat=%d err=%x\n", stat, err );
            }
            else
            {
                diag_printf(" [mode %08x ino %08x nlink %d size %ld]",
                            sbuf.st_mode,sbuf.st_ino,sbuf.st_nlink,(long)sbuf.st_size);
            }
#ifdef CYGPKG_FS_FAT_RET_DIRENT_DTYPE
            if ((entry->d_type & S_IFMT) != (sbuf.st_mode & S_IFMT))
              diag_printf("File mode's don't match between dirent and stat");
#endif
        }

        diag_printf("\n");
    }
        
    err = closedir( dirp );
    if( err < 0 ) diag_printf( "stat=%d err=%x\n", stat, err );
    if (numexpected >= 0 && num != numexpected)
        diag_printf("Wrong number of dir entries\n");
    if ( numgot != NULL )
        *numgot = num;
}
#endif

int main(void)
{
#ifdef CYGPKG_DEVS_DISK_MMC
    int existingdirents=-1;

    diag_printf("Mounting MMC disk\n");
    if (ENOERR != mount( "/dev/mmcdisk0/", "/disk", "fatfs" ))
        diag_printf("MMC disk not mounted\n");

    if (ENOERR != chdir( "/disk" ))
         diag_printf("Changing directory to /disk failed\n");

    checkcwd( "/disk" );

    listdir( "/disk", true, -1, &existingdirents );

#endif

Best regards,
jerzy

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