ti_smartcfg.txt

// not tested and not complete ...

#define USE_TI_SMARTCFG	0

#if (USE_TI_SMARTCFG == 1)

// http://depletionregion.blogspot.com/2013/10/cc3000-smart-config-transmitting-ssid.html

#define SMARTCFG_TAG_SSID	1399
#define SMARTCFG_TAG_PASS	1459

#define SMARTCFG_L			28
#define SMARTCFG_C			593

#define LONIB(X)			((X) & 0x0f)
#define HINIB(X)			LONIB((X) >> 4)

int ti_smartcfg_add_separator(int* dst)
{
    *dst++ = 3;
    *dst++ = 23;
    return 2;
}

int ti_smartcfg_encodestr(int* dst, const char* src, int tag)
{
	int n = 0;

	dst[n++] = tag;
	dst[n++] = strlen(src) + SMARTCFG_L;

	//n += ti_smartcfg_add_separator(dst + n);

	char prv = 0x00;
	int i = 0;
	while (*src)
	{
		char nib, c = *src++;

        nib = HINIB(c);
        dst[n++] = (((prv ^ i) << 4) | nib) + SMARTCFG_C;
        i++;
        i &= 0xf;
        prv = nib;
        //n += ti_smartcfg_add_separator(dst + n);

        nib = LONIB(c);
        dst[n++] = (((prv ^ i) << 4) | nib) + SMARTCFG_C;
        i++;
        i &= 0xf;
        prv = nib;
        //n += ti_smartcfg_add_separator(dst + n);
	}

    //n += ti_smartcfg_add_separator(dst + n);

	return n;
}

bool smartcfg_ftc20(const char* ssid, const char* pass)
{
	#define SSID_MAX	64
	#define PASS_MAX	32

    #define MTU_SIZE	1500

    #define LENS_MAX	(4 + (3 * SSID_MAX) + 4 + (3 * PASS_MAX))

	int lens[LENS_MAX];
	int n = 0;

    for (int j=0; j<10; j++)
    { n += ti_smartcfg_add_separator(lens + n); }

	n += ti_smartcfg_encodestr(lens + n, ssid, SMARTCFG_TAG_SSID);
	n += ti_smartcfg_encodestr(lens + n, pass, SMARTCFG_TAG_PASS);

    for (int i=0; i<n; i++)
    {
        printf("[%02u] = %d \n", i, lens[i]);
    }

    int cnt = 0;
    char dummy[MTU_SIZE];
    memset(dummy, 0xaa, sizeof(dummy));

    while (run)
    {
        for (int i=0; i<n; i++)
        {
            send_sized(lens[i]);
        }

        cnt++;
        printf("Sends: %u    \r", cnt);

        sleep_ms(100);

        // todo: check for mDNS incomming ack, using recvfrom on an nonblocking udp-bound socket
    }
}

#endif