I'm trying to print out returned alt_32 data from functions defined in drivers via the JTAG UART in a Nios II system. Execuse me for being newbie on this, here are my code lines:
ret_code = altera_epcq_controller_init ("/dev/epcq_controller_0");
printf("ret_code = %x \n", (unsigned int) ret_code);
it returns an hexa value but I need to print out the following format:
Thank you for telling me what I suppose to write for printing out the alt_32 data.
The only solution is do something like
if (ret_code == EIO) printf("EIO");
EIO is a symbol that is defined in one of the header files. (ERRNO.H)
The preprocessor replaces EIO with a decimal or hex value of 5 before compiling.
See below an extract of the file:
* Error numbers.
* TODO: Can't be sure of some of these assignments, I guessed from the
* names given by strerror and the defines in the Cygnus errno.h. A lot
* of the names from the Cygnus errno.h are not represented, and a few
* of the descriptions returned by strerror do not obviously match
* their error naming.
#define EPERM 1 /* Operation not permitted */
#define ENOFILE 2 /* No such file or directory */
#define ENOENT 2
#define ESRCH 3 /* No such process */
#define EINTR 4 /* Interrupted function call */
#define EIO 5 /* Input/output error */
#define ENXIO 6 /* No such device or address */
#define E2BIG 7 /* Arg list too long */
#define ENOEXEC 8 /* Exec format error */
#define EBADF 9 /* Bad file descriptor */
#define ECHILD 10 /* No child processes */
#define EAGAIN 11 /* Resource temporarily unavailable */
#define ENOMEM 12 /* Not enough space */
#define EACCES 13 /* Permission denied */
#define EFAULT 14 /* Bad address */
/* 15 - Unknown Error */