I did some testing and I suspect changed firmware behavior after 4.0.11
so that it goes totally power off when put into sleep and on that case
firmware update is also lost.
One solution is to use firmware version to make decision if it needs to
be uploaded everytime after the sleep(). Even better solution is to
detect somehow if firmware upload is need by run-time, but that chip
seems not to answer almost any command when it is put into deep sleep.
I have following firmwares:
4.0.2 (default firmware burned to chip rom)
4.0.4
4.0.11
4.0.19
4.0.25
It could be interesting to get missing ones... I attached script I used
to extract firmwares from binary.
Antti
On 02/13/2016 01:04 PM, Russel Winder wrote:
From what I can see, this problem has gone away – hopefully
permanently.
As far as I can tell the only change is that there has been a firmware
file update at git@xxxxxxxxxx:OpenELEC/dvb-firmware.git that reverts
4.0.19 to 4.0.11
On Wed, 2016-02-03 at 18:17 +0000, Russel Winder wrote:
I am fairly sure I didn't see this before, but then I am not sure I
have a new kernel, libdvbv5 or dvbtools. Also people are bad
witnesses.
However, if I plug the device in I can either scan with it or tune
it,
but only once thereafter it goes into "won't do anything so there"
mode. For example:
dvbv5-zap -c save_channels.conf "BBC NEWS"
using demux '/dev/dvb/adapter0/demux0'
reading channels from file 'save_channels.conf'
service has pid type 05: 7270
tuning to 490000000 Hz
video pid 501
dvb_set_pesfilter 501
audio pid 502
dvb_set_pesfilter 502
(0x00)
Lock (0x1f) Signal= -51.00dBm C/N= 23.50dB
582 anglides:~/Repositories/Git/Git/Me-TV (git:master)
dvbv5-zap -c save_channels.conf "BBC NEWS"
using demux '/dev/dvb/adapter0/demux0'
reading channels from file 'save_channels.conf'
service has pid type 05: 7270
tuning to 490000000 Hz
video pid 501
dvb_set_pesfilter 501
audio pid 502
dvb_set_pesfilter 502
(0x00) C/N= 23.50dB
(0x00) Signal= -67.00dBm C/N= 23.50dB
(0x00) Signal= -67.00dBm C/N= 23.50dB
(0x00) Signal= -109.00dBm C/N= 23.50dB
(0x00) Signal= -109.00dBm C/N= 23.50dB
(0x00) Signal= -109.00dBm C/N= 23.50dB
(0x00) Signal= -109.00dBm C/N= 23.50dB
(0x00) Signal= -109.00dBm C/N= 23.50dB
(0x00) Signal= -109.00dBm C/N= 23.50dB
(0x00) Signal= -109.00dBm C/N= 23.50dB
(0x00) Signal= -109.00dBm C/N= 23.50dB
If I use a PCTV 282e this does not happen. As far as I can tell there
has been no change of firmware either, and yet…
--
http://palosaari.fi/
#!/usr/bin/env python
# Silicon Labs Si2168 firmware extractor.
# Copyright (C) 2015 Antti Palosaari <crope@xxxxxx>
# Usage: si2168_extract_firmware.py binary_driver_name.sys
import sys
import struct
import md5
fread = file(sys.argv[1], 'rb')
binary = fread.read()
offset = 0
# Known firmware md5 and its version
fw_ver_tab = {
'b2670d8ae5e3369fc71edbb98cdd8f6e' : '4.0.11',
'8dfc2483d90282bbb05817fbbc282376' : '4.0.19',
'c8e089c351e9834060e962356f8697b8' : '4.0.25',
}
while True:
# Match 17-byte firmware header
# 04 01 00 00 00 00 9a 41 05 1b af 33 02 1b 3e 7d 2a | A20 (not supported)
# 08 05 00 xx xx xx xx xx xx 00 00 00 00 00 00 00 00 | B40
offset = binary.find('\x08\x05\x00', offset)
if offset == -1:
print "Done"
break
if (binary[offset + 9:offset + 17] != '\x00\x00\x00\x00\x00\x00\x00\x00'):
offset = offset + 1
continue
print "17-byte firmware found at 0x%x" % (offset)
fw_filename = 'dvb-demod-si2168-b40-01.fw_' + str(offset)
fw_write = open(fw_filename, 'wb')
fw_md5 = md5.new()
while True:
fields = struct.unpack("B", binary[offset])
fw_data_len = fields[0]
# Firmware chunk first byte tells bytes to upload - 16 is max
if fw_data_len > 16:
print "Firmware upload len too large %d" % (fw_data_len)
break
# Check remaining (unused) bytes on firmware 17-byte chunk are all zero
data_valid = True
for x in range(offset + fw_data_len + 1, offset + 17):
if (binary[x] != '\x00'):
data_valid = False
break
if data_valid == False:
break
# Firmware chunk validated, write it to file
fw_write.write(binary[offset + 0:offset + 17])
fw_md5.update(binary[offset + 0:offset + 17])
offset = offset + 17
fw_write.close()
if fw_md5.hexdigest() in fw_ver_tab:
fw_ver = fw_ver_tab[fw_md5.hexdigest()]
else:
fw_ver = '<unknown>'
print "Firmware md5 '%s'" % (fw_md5.hexdigest())
print "Firmware version '%s'" % (fw_ver)
print "Firmware stored to file '%s'" % (fw_filename)
offset = offset + 1
fread.close()
