This is the mail archive of the
ecos-discuss@sourceware.org
mailing list for the eCos project.
Re: Reading flash config value from application
On Tue, 2006-06-20 at 18:26 -0400, Andre-John Mas wrote:
> Hi,
>
> I am not sure what I am doing wrong, but CYGACC_CALL_IF_FLASH_CFG_OP is not finding the value (returning false). I am trying to read the "bootp_my_ip" value. Every time the card restarts the redboot sees the right values, so it doesn't seem to be an issue of data getting over-written.
>
> Below are the modifications I made to network_support.c in the net/common package:
>
> #include <cyg/hal/hal_if.h>
>
> // For fetching the IP info from RedBoot
> #include <cyg/hal/hal_if.h>
> #ifndef CONFIG_IP
> #define CONFIG_IP 5
> #endif
>
> typedef unsigned char ip_addr_t[4];
>
> //
> // taken from redboot ... net/net_io.c
> //
> static bool
> flash_get_IP(char *id, ip_addr_t *val)
> {
> ip_addr_t my_ip[4];
Do you really want an array of 4 ip_address_t objects?
> int i;
>
> if (CYGACC_CALL_IF_FLASH_CFG_OP(CYGNUM_CALL_IF_FLASH_CFG_GET, id, &my_ip, CONFIG_IP))
> {
> diag_printf("flash_get_IP %s\n", my_ip);
> if (my_ip[0] != 0 || my_ip[1] != 0 ||
> my_ip[2] != 0 || my_ip[3] != 0) {
> // 'id' is set to something so let it override any static IP
> for (i=0; i<4; i++)
> (*val)[i] = my_ip[i];
> }
> }
> else
> {
> return false;
> }
> }
>
> and then in the init_all_networks_interfaces() function I have:
>
> struct in_addr card_ip;
>
> flash_get_IP("bootp_my_ip", card_ip.s_addr);
>
> Any ideas what I might be doing wrong?
I don't see anything in particular wrong with this code. I tried
the attached program and it worked just fine for me.
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
#include <stdio.h>
#include <cyg/kernel/kapi.h>
#include <cyg/hal/hal_if.h>
#include <network.h>
#define CONFIG_IP 5
int
main(int argc, char *argv[])
{
unsigned long addr;
if (CYGACC_CALL_IF_FLASH_CFG_OP(CYGNUM_CALL_IF_FLASH_CFG_GET,
"bootp_my_ip",
&addr,
CONFIG_IP)) {
diag_dump_buf(&addr, sizeof(addr));
} else {
printf("Can't get 'bootp_my_ip'\n");
}
printf("fconfig_test done\n");
return 0;
}
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss