Beiträge von Courage

Courage · 6. Oktober 2007

stb0899_drv answer value of signal strength in dBm - but in dvb-s mode it may
be answer strange negative value - I see a ff38 .

I change shift value in functions "stb0899_read_signal_strength()"
of stb0899_drv.c so signal strength now in range near 40-50 db -
it range near EIRP of sattelites signal.

stb0899_drv.c line 992

Code

//*strength += 750;
                                *strength += 1060;

And change szap2.c to print dBW for EIRP and dB for SNR

szap2.c line 349

Code

printf ("status %02x | EIRP %4.1fdBW | snr %4.1fdB | ber %08x | unc %08x | ",
                        status, (float) signal/10, (float) snr/10, ber, uncorrected_blocks);

now szap2 display a more meaningful and understandably figure

Code

# ./szap2 -c test-19E.conf -t0  -m2 -n3
status 1e | EIRP 43.5dBW | snr 10.1dB | ber 00000000 | unc fffffffe | FE_HAS_LOCK

Code

# ./szap2 -c test-19E.conf -t0  -m2 -n4
status 1e | EIRP 52.3dBW | snr 10.2dB | ber 00000000 | unc fffffffe | FE_HAS_LOCK

But many questions remain:
- snr 10 db very high for channel -n3 (Eurosport) more real value is about 4dB and
no change in line of signal value - for strong signal (52.3dBW) it must be near 12-15dB - for
weak signal (43.5dBW) - about 3-5 dB.
- unc always display fffffffe
- for dvb-s2 signal strength always display 05aa and snr may as well about normal value 001a 0040
as very strange value 9995.

Courage · 5. Oktober 2007

sewn4
if allowed, a few comments about WIKI

1) in part 'DVB Treiber herunterladen und vorbereiten' can be simple?

cd /usr/local/src
hg clone http://jusst.de/hg/multiproto

and patch and make in /usr/local/src/multiproto ?

2) about budget-av.c - this patch already in tree - so no need it in wiki

Courage · 5. Oktober 2007

Manu Abraham make changes 4 and 5 october in http://jusst.de/hg/multiproto

- now 2 changes over budget-ci.c include in tree
"Bug! inverted logic" http://jusst.de/hg/multiproto/rev/fbdb42f05577
"Bug: Missing reference clock definition" http://jusst.de/hg/multiproto/rev/57272c67902f

- add change in budget-av.c
"Fix tuner name and comment" http://jusst.de/hg/multiproto/rev/157761de7a5b

- add change in stb0899_drv.c
Bug! Timing recovery was calculated for 99MHz not 90 MHz http://jusst.de/hg/multiproto/rev/0334455f056e

Diff

--- a/linux/drivers/media/dvb/frontends/stb0899_drv.c	Thu Oct 04 23:52:51 2007 +0400
+++ b/linux/drivers/media/dvb/frontends/stb0899_drv.c	Fri Oct 05 00:39:19 2007 +0400
@@ -1578,7 +1578,7 @@ static enum dvbfe_search stb0899_search(
 		if (i_params->srate <= 5000000)
 			stb0899_set_mclk(state, 76500000);
 		else
-			stb0899_set_mclk(state, 90000000);
+			stb0899_set_mclk(state, 99000000);
 
 		switch (state->delsys) {
 		case DVBFE_DELSYS_DVBS:

Alles anzeigen

Courage · 4. Oktober 2007

need your help - no any signal information from dvb-card TT3200

Code

debian:/usr/local/src/szap2# szap2 -t 0 -r -c 13E_fta_dvb-s.test.conf C1R-Europe
reading channels from file '13E_fta_dvb-s.test.conf'
zapping to 1 'C1R-Europe':
sat 0, frequency = 12597 MHz V, symbolrate 27500000, vpid = 0x00a7, apid = 0x006c sid = 0x0000 (fec = -2147483648, mod = 2)
Querying info .. Delivery system=DVB-S
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
----------------------------------> Using 'STB0899 DVB-S' DVB-S
diseqc: sat_no:0 pol_vert:1 hi_band:1 cmd:e0 10 38 f1 wait:0


do_tune: API version=2, delivery system = 0
do_tune: Frequency = 1997000, Srate = 27500000 (DVB-S)
do_tune: Frequency = 1997000, Srate = 27500000 (SET_PARAMS)




status 00 | signal 0000 | snr 0000 | ber 00000000 | unc fffffffe |
status 00 | signal 0000 | snr 0000 | ber 00000000 | unc fffffffe |
status 00 | signal 0000 | snr 0000 | ber 00000000 | unc fffffffe |


debian:/usr/local/src/szap2#

Alles anzeigen

Where my mistake?

Platform configuration
dvbcard TT3200 + motherboard Asus P4C800 (chipset Intel875P) + P4 2400 HT (socket 478 )
+ OS Debian (stable etch) + debian linux-kernel 2.6.18-5-486
+ linux-headers /usr/src/linux-headers-2.6.18-5-486

how I make dvb kernel-modules:
- get tree from http://jusst.de/hg/multiproto

Code

# cd /usr/local/src
# apt-get install mercurial
# hg clone http://jusst.de/hg/multiproto
# mv multiproto dvb

- make 3 changes in sources (2 over budget-ci.c + 1 over dvb_frontend.c)
I make that patch from info http://www.vdr-wiki.de/wiki/in…SuSE_DVB-S2_-_DVB_Treiber

multiproto-1.10.07-tt3200.diff

Diff

diff -u -r dvb.orig/dvb-core/dvb_frontend.c dvb/dvb-core/dvb_frontend.c
--- dvb.orig/dvb-core/dvb_frontend.c    2007-10-01 12:34:38.000000000 +0400
+++ dvb/dvb-core/dvb_frontend.c 2007-10-04 09:10:18.000000000 +0400
@@ -1727,6 +1727,7 @@
                                fepriv->max_drift = 0;
                                break;
                        default:
+                               up (&fepriv->sem);
                                return -EINVAL;
                        }
                }
diff -u -r dvb.orig/ttpci/budget-ci.c dvb/ttpci/budget-ci.c
--- dvb.orig/ttpci/budget-ci.c  2007-10-01 12:34:39.000000000 +0400
+++ dvb/ttpci/budget-ci.c       2007-10-04 09:11:11.000000000 +0400
@@ -1678,7 +1678,8 @@
 };


 struct stb6100_config tt3200_stb6100_config = {
-       .tuner_address = 0x60
+       .tuner_address = 0x60,
+       .refclock       = 27000000,
 };


 static void frontend_init(struct budget_ci *budget_ci)
@@ -1755,7 +1756,7 @@
                budget_ci->budget.dvb_frontend = stb0899_attach(&tt3200_config, &budget_ci->budget.i2c_adap);
                if (budget_ci->budget.dvb_frontend) {
                        if (stb6100_attach(budget_ci->budget.dvb_frontend, &tt3200_stb6100_config, &budget_ci->budget.i2c_adap)) {
-                               if (lnbp21_attach(budget_ci->budget.dvb_frontend, &budget_ci->budget.i2c_adap, 0, 0)) {
+                               if (!lnbp21_attach(budget_ci->budget.dvb_frontend, &budget_ci->budget.i2c_adap, 0, 0)) {
                                        printk("%s: No LNBP21 found!\n", __FUNCTION__);
                                        if (budget_ci->budget.dvb_frontend->ops.tuner_ops.release)
                                                budget_ci->budget.dvb_frontend->ops.tuner_ops.release(budget_ci->budget.dvb_frontend);

Alles anzeigen

put that patch in /usr/local/src/dvb/linux/drivers/media
and patch a tree

Code

# cd /usr/local/src/dvb/linux/drivers/media
# patch -p0 < multiproto-1.10.07-tt3200.diff
patching file dvb/dvb-core/dvb_frontend.c
patching file dvb/ttpci/budget-ci.c

- now make dvb drivers

Code

# cd /usr/local/src/dvb
# make 
# make install

- reboot machine
- after reboot check dmesg

Code

stb0899_attach: Attaching STB0899
stb6100_attach: Attaching STB6100
DVB: registering frontend 0 (STB0899 Multistandard)...

driver load OK
(full dmesg in attach archive file in dmesg.txt)

- now make szap2

Code

# cd /usr/local/src
# wget http://dev.kewl.org/hvr4000/utils/szap2.tgz
# tar -xzf szap2.tgz
# cd szap2
# make
# make install

- make 13E_fta_dvb-s.test.conf with 3 FTA DVB-S channels from Hotbird

Code

C1R-Europe:12597:vC34:S13.0E:27500:167:108:0:0:8208:318:9400:0
RTR:11034:vC34:S13.0E:27500:820:830:0:0:1708:176:12600:0

and put it in /usr/local/src/szap2 directory

Code

# szap2 -t 0 -r -c 13E_fta_dvb-s.test.conf C1R-Europe

See at signal info ... nothing
(syslog messages while szap2 work see in attachment file - szap2 messages
see in upper part of my post)

hmmm... its normal - fec = -2147483648 ?

If i use szap from http://abraham.manu.googlepages.com/szap.c
I see in syslog a similar error associated with FEC

Code

Oct  3 16:33:48 debian kernel: newfec_to_oldfec: Unsupported FEC

in attacment
- 13E_fta_dvb-s.test.conf
- dmesg.txt
- multiproto-1.10.07-tt3200.diff
- syslog.txt

hmmm... I can not attach file - press "Attachment" button and ... nothing
sorry - now I see attachment windows

Beiträge von Courage

Technotrend S2-3200 HDTV-S2

Technotrend S2-3200 HDTV-S2

Technotrend S2-3200 HDTV-S2

Technotrend S2-3200 HDTV-S2