static void start_sync(void)
{
int rxlev = -128;
int i, dist = 0;
char dist_str[32] = "";
arfcn = 0xffff;
for (i = 0; i <= 1023; i++) {
if ((pm[i].flags & INFO_FLG_PM)
&& !(pm[i].flags & INFO_FLG_SYNC)) {
if (pm[i].rxlev > rxlev) {
rxlev = pm[i].rxlev;
arfcn = i;
}
}
}
/* if GPS becomes valid, like after exitting a tunnel */
if (!pm_gps_valid && g.valid) {
pm_gps_valid = 1;
geo2space(&pm_gps_x, &pm_gps_y, &pm_gps_z, g.longitude,
g.latitude);
}
if (pm_gps_valid && g.valid) {
double x, y, z;
geo2space(&x, &y, &z, g.longitude, g.latitude);
dist = distinspace(pm_gps_x, pm_gps_y, pm_gps_z, x, y, z);
sprintf(dist_str, " dist %d", (int)dist);
}
if (dist > MAX_DIST || arfcn == 0xffff || rxlev < min_rxlev) {
memset(pm, 0, sizeof(pm));
pm_index = 0;
sync_count = 0;
start_pm();
return;
}
pm[arfcn].flags |= INFO_FLG_SYNC;
LOGP(DSUM, LOGL_INFO, "Sync ARFCN %d (rxlev %d, %d syncs "
"left)%s\n", arfcn, pm[arfcn].rxlev, sync_count--, dist_str);
memset(&sysinfo, 0, sizeof(sysinfo));
sysinfo.arfcn = arfcn;
state = SCAN_STATE_SYNC;
l1ctl_tx_reset_req(ms, L1CTL_RES_T_FULL);
l1ctl_tx_fbsb_req(ms, arfcn, L1CTL_FBSB_F_FB01SB, 100, 0,
CCCH_MODE_NONE);
}
static int signal_cb(unsigned int subsys, unsigned int signal,
void *handler_data, void *signal_data)
{
struct osmocom_ms *ms;
if (subsys != SS_L1CTL)
return 0;
switch (signal) {
case S_L1CTL_RESET:
ms = signal_data;
layer3_app_reset();
return l1ctl_tx_fbsb_req(ms, ms->test_arfcn,
L1CTL_FBSB_F_FB01SB, 100, 0,
CCCH_MODE_NONE);
break;
}
return 0;
}
static int signal_cb(unsigned int subsys, unsigned int signal,
void *handler_data, void *signal_data)
{
struct osmocom_ms *ms;
if (subsys != SS_L1CTL)
return 0;
switch (signal) {
case S_L1CTL_RESET:
case S_L1CTL_FBSB_ERR:
ms = g_ms;
return l1ctl_tx_fbsb_req(ms, ms->test_arfcn,
L1CTL_FBSB_F_FB01SB, 100, 0, CCCH_MODE_COMBINED);
case S_L1CTL_FBSB_RESP:
return 0;
}
return 0;
}
/* start to scan for one ARFCN */
static int _cinfo_start_arfcn(unsigned int band_arfcn)
{
int rc;
/* ask L1 to try to tune to new ARFCN */
/* FIXME: decode band */
rc = l1ctl_tx_fbsb_req(fps.ms, band_arfcn,
L1CTL_FBSB_F_FB01SB, 100, 0, CCCH_MODE_COMBINED);
if (rc < 0)
return rc;
/* allocate new cell info structure */
fps.cur_cell = cell_info_alloc();
fps.cur_arfcn = band_arfcn;
fps.cur_cell->band_arfcn = band_arfcn;
/* FIXME: start timer in case we never get a sync */
fps.state = BSCAN_S_WAIT_DATA;
osmo_timer_schedule(&fps.timer, 2, 0);
return 0;
}
