Re: Components to get full TNC?
Nick wants to :
> ? ? 1. Be able to locally login to ARES BBS for messages. (Minicom? linPac?)
Dire Wolf version 1.4 has support for traditional connected mode packet. ?You will need to use a separate terminal application such as AGWterm.
Details here: ?? ?in chapter 10.
This connects over TCP port 8000 so the TNC and applications can be running on different computers and different operating systems. ?In the default configuration, Dire Wolf can handle 3 concurrent applications on port 8000. ?This is easily increased by changing one line and recompiling.
To get version 1.4, use "git checkout dev" command.
|
Re: Components to get full TNC?
Hey David,
Started early in this morning looking at the documentation that you sent me and the X 25 protocol stack replacement. In true form with most things I try, I don't get the authors results ;-) even the initial configure script puked with missing bits (ltmain.sh)?
Now I have to use Compass Linux as it was built with the drivers for the UDRC-II card in kernel.?
I see your docs do say the ax.25 provided isn't what I want, so I will be going off script in an attempt to get the github version to go. :-)
Nick Nick Ellson - from iPhone (forgive typos) CCIE #20018; VCIX-NV, CNSE Network Hobbyist "Educating Layer 8, one user at a time."
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Show quoted text
On Mar 16, 2017, at 6:14 PM, David Ranch dranch@... [direwolf_packet] < direwolf_packet@...> wrote:
?
Hello Nick
?
Would anyone be able to tell me what software (Compass
Linux on a Raspberry Pi) would be used with direwolfs KISS
TNC port ability to get full TNC command emulation? IE: So
I can just connect minicom or telnet to the port and issue
commands like I do with a hardware TNC2 on my Kenwood HT
& D710ga?
I'm only aware of linbpq32 with it's TNC2 emulation will do
something like this.? It's a bit overkill to run a complete BBS
package to emulate a TNC though.
I saw this once in a forum.. something like pilinbpq or
something stood up the full TNC, but I am having trouble
finding it. Anyone using direwolf with othersoftware to
get a full TNC2?
Can you tell us what you want to do?? Do you just want to make
classic packet connections?? Send UI-packets aka beacons?? Monitor
AX.25 traffic??? If so, Linux's native AX.25 applications can do
those things on a basic level using Direwolf.? There are also higher
level programs out there that are far more powerful to emulate
host-mode programs like PakRatt, PkGold, etc.?? I can speak for
Linpac which I maintain for Linux:
??
a full HOWTO is here:?
There are other packet programs out there for Linux too that are
worth checking out:
??
--David
KI6ZHD
|
Bind failed with error: 98
Hello all.? New to this rapsberry Pi thing.? Just set up my first one yesterday.? I was able to successfully test using this line: rtl_fm -f 144.80M - | direwolf -c sdr.conf -r 24000 -D 1 -
Trying to test a second time results in:
Bind failed with error: 98
address already in use
some other application is probably already using port 8000.
Try using a different port number with AGWPORT in the configuration file.
Use -p command line option to enable KISS pseudo terminal.
Bind failed with error: 98
address already in use
some other application is probably already using port 8001.
Try using a different port number with AGWPORT in the configuration file.
? 0:? Realtek, RTL2838UHIDIR
Using device 0: Generic RTL2832u OEM
usb_claim_interface error -6
Failed to open rtlsdr device #0.
A reboot will allow a successful test once and then the same error occurs.? Also, even while working, I was never seeing any packets (I'm listening to other packets on another radio, so there is traffic).
During a successful test, I got this message:
Using device 0: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
Tuner gain set to automatic.
Tuned to 145052000 Hz.
Oversampling input by: 42x.
Oversampling output by: 1x.
Buffer size: 8.13ms
Exact sample rate is: 1008000.009613 Hz
Sampling at 1008000 S/s.
Output at 24000 Hz.
Signal caught, exiting!
Would the 145052000 Hz have anything to do with it??? I do have the program setup on 144.80M
Thanks!? I spent all last evening trying to figure these answers out but got further in the weeds.? Learned some new things though.
Scott
M0SGO
?
|
Re: Components to get full TNC?
I also have 2 TNCPi's so I might want to follow those steps after I have my UDRC-II station working.?
With the UDRC-II, I also get my FLDIGI / WSJT-X and SSTV app functions.?
Let me dig into what you posted, thank you!!? Nick Ellson - from iPhone (forgive typos) CCIE #20018; VCIX-NV, CNSE Network Hobbyist "Educating Layer 8, one user at a time."
toggle quoted message
Show quoted text
On Mar 17, 2017, at 7:56 AM, David Ranch dranch@... [direwolf_packet] < direwolf_packet@...> wrote:
?
Hello Nick,
?
my goal is to build a digital workstation
that has the ability to complete any basic pack a task for
the purposes of instruction to my ham club, ARES team, and
Scouting organization.
Ok.. Linux can do that
1. Be able to locally login to ARES BBS for messages.
(Minicom? linPac?)
2. Use my RPi to do #1 from a remote PC via telnet/ssh
such that it's a shared resource at ARES deployment.
Either of those probably means I have the keyboard to
keyboard texting also, as that's what the BBS is at the
other end.
In the HOWTO link I sent yesterday, my design is to be able to SSH
into my Rpiv3 via my smartphone to be the monitor and keyboard.?
Works well!
That's the basics. I want to eventually understand each
app and what it can do in this space. When would I use
kissattach vs Direwolf?
There are lots of examples but the script I'm using on the Rpi3 is
here (supports both DIrewolf but also the TNC-Pi too):
??
There is a lot in there but if you follow it logically (ignore the
tncpi and axipd sections), there actually isn't too much in it.
Or look, I can "ping" over an ax.25 connection
IP works but it's very very slow at 1200BAUD AFSK packet.? 9600 is
better but it's still a lot of overhead for 56 bytes of payload.
And eventually get RMS Gateway running so I can use
IMAP from attached stations to send Winlink Mail.
Paclink Linux (for IMAP) or PAT (more like RMS Express) can do these
things
I did get LinPac started on my RPi, but
did not know how to answer all of its start up questions
about my hierarchy? But it looks like a neat terminal
program, if I could get it connected :-)
Well, first you need to get the Linux AX25 subsystem working and be
able to use the "axcall" program to make successful outgoing
connections:
?? - the ax.25 stack is configured
?? - the RPI can key up your radio
?? - your audio levels are good
?? - you can establish a good, cliean connection to a remote partner
I am very appreciative of any help you can give me. :-)
Read the URL that I sent out yesterday.? There are other good URLs
out there as well (but beware, there are others that are
old/obsolete as well).?
?? - Spend some time on hardening your Rpi's OS so it's SD card will
last longer
?? - Clean power for your Rpi is critical for it being stable
?? - don't forget the decoupling caps on the microphone ports of
your radio and sound card
?? - audio & PTT isolation boards are a good idea for 1200baud
packet (the audio side doesn't work on most for 9600)
Nick Ellson - from iPhone (forgive typos)
CCIE #20018; VCIX-NV, CNSE
Network Hobbyist
"Educating Layer 8, one user at a time."
Ha.. ok!?? I'm Layer 8 at Juniper Networks? ;-)
--David
KI6ZHD
|
Re: Components to get full TNC?
Hello Nick,
?
my goal is to build a digital workstation
that has the ability to complete any basic pack a task for
the purposes of instruction to my ham club, ARES team, and
Scouting organization.
Ok.. Linux can do that
1. Be able to locally login to ARES BBS for messages.
(Minicom? linPac?)
2. Use my RPi to do #1 from a remote PC via telnet/ssh
such that it's a shared resource at ARES deployment.
Either of those probably means I have the keyboard to
keyboard texting also, as that's what the BBS is at the
other end.
In the HOWTO link I sent yesterday, my design is to be able to SSH
into my Rpiv3 via my smartphone to be the monitor and keyboard.?
Works well!
That's the basics. I want to eventually understand each
app and what it can do in this space. When would I use
kissattach vs Direwolf?
There are lots of examples but the script I'm using on the Rpi3 is
here (supports both DIrewolf but also the TNC-Pi too):
??
There is a lot in there but if you follow it logically (ignore the
tncpi and axipd sections), there actually isn't too much in it.
Or look, I can "ping" over an ax.25 connection
IP works but it's very very slow at 1200BAUD AFSK packet.? 9600 is
better but it's still a lot of overhead for 56 bytes of payload.
And eventually get RMS Gateway running so I can use
IMAP from attached stations to send Winlink Mail.
Paclink Linux (for IMAP) or PAT (more like RMS Express) can do these
things
I did get LinPac started on my RPi, but
did not know how to answer all of its start up questions
about my hierarchy? But it looks like a neat terminal
program, if I could get it connected :-)
Well, first you need to get the Linux AX25 subsystem working and be
able to use the "axcall" program to make successful outgoing
connections:
?? - the ax.25 stack is configured
?? - the RPI can key up your radio
?? - your audio levels are good
?? - you can establish a good, cliean connection to a remote partner
I am very appreciative of any help you can give me. :-)
Read the URL that I sent out yesterday.? There are other good URLs
out there as well (but beware, there are others that are
old/obsolete as well).?
?? - Spend some time on hardening your Rpi's OS so it's SD card will
last longer
?? - Clean power for your Rpi is critical for it being stable
?? - don't forget the decoupling caps on the microphone ports of
your radio and sound card
?? - audio & PTT isolation boards are a good idea for 1200baud
packet (the audio side doesn't work on most for 9600)
Nick Ellson - from iPhone (forgive typos)
CCIE #20018; VCIX-NV, CNSE
Network Hobbyist
"Educating Layer 8, one user at a time."
Ha.. ok!?? I'm Layer 8 at Juniper Networks? ;-)
--David
KI6ZHD
|
Re: Components to get full TNC?
Yes!!! I agree, linbpq does seem like a lot just to get TNC2 like emulation.?
my goal is to build a digital workstation that has the ability to complete any basic pack a task for the purposes of instruction to my ham club, ARES team, and Scouting organization.
1. Be able to locally login to ARES BBS for messages. (Minicom? linPac?)
2. Use my RPi to do #1 from a remote PC via telnet/ssh such that it's a shared resource at ARES deployment.
Either of those probably means I have the keyboard to keyboard texting also, as that's what the BBS is at the other end.
That's the basics. I want to eventually understand each app and what it can do in this space. When would I use kissattach vs Direwolf? Or look, I can "ping" over an ax.25 connection. And eventually get RMS Gateway running so I can use IMAP from attached stations to send Winlink Mail. But just the text basics first.
I did get LinPac started on my RPi, but did not know how to answer all of its start up questions about my hierarchy? But it looks like a neat terminal program, if I could get it connected :-)
I am very appreciative of any help you can give me. :-)
Nick Ellson - from iPhone (forgive typos) CCIE #20018; VCIX-NV, CNSE Network Hobbyist "Educating Layer 8, one user at a time."
toggle quoted message
Show quoted text
On Mar 16, 2017, at 6:14 PM, David Ranch dranch@... [direwolf_packet] < direwolf_packet@...> wrote:
?
Hello Nick
?
Would anyone be able to tell me what software (Compass
Linux on a Raspberry Pi) would be used with direwolfs KISS
TNC port ability to get full TNC command emulation? IE: So
I can just connect minicom or telnet to the port and issue
commands like I do with a hardware TNC2 on my Kenwood HT
& D710ga?
I'm only aware of linbpq32 with it's TNC2 emulation will do
something like this.? It's a bit overkill to run a complete BBS
package to emulate a TNC though.
I saw this once in a forum.. something like pilinbpq or
something stood up the full TNC, but I am having trouble
finding it. Anyone using direwolf with othersoftware to
get a full TNC2?
Can you tell us what you want to do?? Do you just want to make
classic packet connections?? Send UI-packets aka beacons?? Monitor
AX.25 traffic??? If so, Linux's native AX.25 applications can do
those things on a basic level using Direwolf.? There are also higher
level programs out there that are far more powerful to emulate
host-mode programs like PakRatt, PkGold, etc.?? I can speak for
Linpac which I maintain for Linux:
??
a full HOWTO is here:?
There are other packet programs out there for Linux too that are
worth checking out:
??
--David
KI6ZHD
|
To be honest and in your design, I would recommend to not send ANY
beacons from Direwolf.? Instead, write a program / script / etc.
that takes in all of the considerations of:
?? - incoming current from the panels
?? - time of day
?? - etc
From there, then use the Linux "beacon" program to send a on-off
beacon as an APRS packet with whatever telemetry you want.? After
that, the program goes back to sleep until it's time to see if it's
time to send another beacon.
--David
KI6ZHD
On 03/16/2017 07:42 PM, Brian Gieryk
ke6iyc@... [direwolf_packet] wrote:
toggle quoted message
Show quoted text
?
I wonder if you could hook a thermocouple to a gpio
then point a speed reading to that gpio pin. ?You could
the use that for your smart beacon, perhaps?
Never done it, just
thinking....
Brian
KE6IYC?
?
Hello All,
I am currently working on my fifth RPi/Direwolf
APRS installation, and have ran into an issue
which has me stumped and hoping someone in the
group has an answer for, or at least,?can give me
a kick in the right direction.
First of all, some background:
The latest APRS station will primarily be used to
send back weather & telemetry on the vitals of
one of our local clubs VHF voice repeaters. The
repeater is solar powered and located in an
EXTREMELY remote mountain in the far north of
Canada, thus, during winter months,?(the shortest
days of the year in late December, the site gets
slightly more than 7 hours of sunlight a day), so
the power budget is VERY tight (not to mention the
financial budget our clubs 'Minister of
Finance':-)) At the same time temperatures
regularly drop at the site to -40 C (yes, that's
also -40 F for you folks south of the border),
which also drastically reduces battery capacity!
(Don't think the battery folks ever tested their
battery CCA's at our temperatures :-)). Operating
the RPi at these temperatures doesn't seem to be
an issue. We have one station that has seen these
temperatures on several occasions and is still
humming away. Moisture on the other hand is a
different story... Elmer Tip from years
of?experience in this environment: If you expect
extremely low temps, seal up & insulate your
electronics,?but before you do,?toss in?a few
Silica Gel packs to suck up the moisture?and
prevent frost forming on the electronics &
shorting it out.
I have already taken care of all the usual paths
of power conservation (right down to turning off
the LED on the Pi Zero to save that extra 5 mA),
but had another idea that would help conserve more
power at the most crucial times, but I'm not quite
sure how to tackle it.
One of the previous APRS stations I built was
a mobile with GPS module using the
SMARTBEACON/TBEACON. Worked great but got me
thinking,?"Would it be possible to do the same
type of ?Tx interval variations using the
CBEACON?"
For Example: With GPS SMARTBEACON the Tx interval
can be varied based on the speed travelling
(faster...more packets, slower...less
packets).?Might it also be possible to?send a
CBEACON in the same manner, ie. based on
temperature readings taken from a temp sensor on
the batteries? (Higher temperature...more packets,
lower temperature...less packets).?Guess you could
call it a SMARTCBEACON?
I've read through the Direwolf manual,
scanned the group and searched for any similar
solutions, but nothing?showing up.
Has anyone out there done anything similar or
have any thoughts on how it may be done? Any help,
suggestions would be most appreciated!
73,
DE VO2GO
Glen
|
I wonder if you could hook a thermocouple to a gpio then point a speed reading to that gpio pin. ?You could the use that for your smart beacon, perhaps?
Never done it, just thinking....
Brian KE6IYC?
toggle quoted message
Show quoted text
On Mar 16, 2017, at 20:15, oldfordg@... [direwolf_packet] < direwolf_packet@...> wrote:
?
Hello All,
I am currently working on my fifth RPi/Direwolf APRS installation, and have ran into an issue which has me stumped and hoping someone in the group has an answer for, or at least,?can give me a kick in the right direction.
First of all, some background:
The latest APRS station will primarily be used to send back weather & telemetry on the vitals of one of our local clubs VHF voice repeaters. The repeater is solar powered and located in an EXTREMELY remote mountain in the far north of Canada, thus, during winter months,?(the shortest days of the year in late December, the site gets slightly more than 7 hours of sunlight a day), so the power budget is VERY tight (not to mention the financial budget our clubs 'Minister of Finance':-)) At the same time temperatures regularly drop at the site to -40 C (yes, that's also -40 F for you folks south of the border), which
also drastically reduces battery capacity! (Don't think the battery folks ever tested their battery CCA's at our temperatures :-)). Operating the RPi at these temperatures doesn't seem to be an issue. We have one station that has seen these temperatures on several occasions and is still humming away. Moisture on the other hand is a different story... Elmer Tip from years of?experience in this environment: If you expect extremely low temps, seal up & insulate your electronics,?but before you do,?toss in?a few Silica Gel packs to suck up the moisture?and prevent frost forming on the electronics & shorting it out.
I have already taken care of all the usual paths of power conservation (right down to turning off the LED on the Pi Zero to save that extra 5 mA), but had another idea that would help conserve more power at the most crucial times, but I'm not quite sure how to tackle
it.
One of the previous APRS stations I built was a mobile with GPS module using the SMARTBEACON/TBEACON. Worked great but got me thinking,?"Would it be possible to do the same type of ?Tx interval variations using the CBEACON?"
For Example: With GPS SMARTBEACON the Tx interval can be varied based on the speed travelling (faster...more packets, slower...less packets).?Might it also be possible to?send a CBEACON in the same manner, ie. based on temperature readings taken from a temp sensor on the batteries? (Higher temperature...more packets, lower temperature...less packets).?Guess you could call it a SMARTCBEACON?
I've read through the Direwolf manual, scanned the group and searched for any similar solutions, but nothing?showing up.
Has anyone out there done anything similar or
have any thoughts on how it may be done? Any help, suggestions would be most appreciated!
73,
DE VO2GO
Glen
|
Hello All,
I am currently working on my fifth RPi/Direwolf APRS installation, and have ran into an issue which has me stumped and hoping someone in the group has an answer for, or at least,?can give me a kick in the right direction.
First of all, some background:
The latest APRS station will primarily be used to send back weather & telemetry on the vitals of one of our local clubs VHF voice repeaters. The repeater is solar powered and located in an EXTREMELY remote mountain in the far north of Canada, thus, during winter months,?(the shortest days of the year in late December, the site gets slightly more than 7 hours of sunlight a day), so the power budget is VERY tight (not to mention the financial budget our clubs 'Minister of Finance':-)) At the same time temperatures regularly drop at the site to -40 C (yes, that's also -40 F for you folks south of the border), which also drastically reduces battery capacity! (Don't think the battery folks ever tested their battery CCA's at our temperatures :-)). Operating the RPi at these temperatures doesn't seem to be an issue. We have one station that has seen these temperatures on several occasions and is still humming away. Moisture on the other hand is a different story... Elmer Tip from years of?experience in this environment: If you expect extremely low temps, seal up & insulate your electronics,?but before you do,?toss in?a few Silica Gel packs to suck up the moisture?and prevent frost forming on the electronics & shorting it out.
I have already taken care of all the usual paths of power conservation (right down to turning off the LED on the Pi Zero to save that extra 5 mA), but had another idea that would help conserve more power at the most crucial times, but I'm not quite sure how to tackle it.
One of the previous APRS stations I built was a mobile with GPS module using the SMARTBEACON/TBEACON. Worked great but got me thinking,?"Would it be possible to do the same type of ?Tx interval variations using the CBEACON?"
For Example: With GPS SMARTBEACON the Tx interval can be varied based on the speed travelling (faster...more packets, slower...less packets).?Might it also be possible to?send a CBEACON in the same manner, ie. based on temperature readings taken from a temp sensor on the batteries? (Higher temperature...more packets, lower temperature...less packets).?Guess you could call it a SMARTCBEACON?
I've read through the Direwolf manual, scanned the group and searched for any similar solutions, but nothing?showing up.
Has anyone out there done anything similar or have any thoughts on how it may be done? Any help, suggestions would be most appreciated!
73,
DE VO2GO
Glen
|
Re: Components to get full TNC?
BPQ32 node stack, or LinBPQ on Linux, has a TNC emulator. It's complicated to set up but will do what you are asking for. On the other hand, to 'do packet' - the built in ax25 stack tools on linux have the functionality you're probably looking for and would be less to configure than BPQ32. What exactly do you want to do? 73 Bill, WA7NWP On Thu, Mar 16, 2017 at 5:15 PM, nickolas.ellson@... [direwolf_packet] <direwolf_packet@...> wrote:
Would anyone be able to tell me what software (Compass Linux on a Raspberry
Pi) would be used with direwolfs KISS TNC port ability to get full TNC
command emulation? IE: So I can just connect minicom or telnet to the port
and issue commands like I do with a hardware TNC2 on my Kenwood HT & D710ga?
I saw this once in a forum.. something like pilinbpq or something stood up
the full TNC, but I am having trouble finding it. Anyone using direwolf with
othersoftware to get a full TNC2?
Nick
|
Re: Components to get full TNC?
Hello Nick
?
Would anyone be able to tell me what software (Compass
Linux on a Raspberry Pi) would be used with direwolfs KISS
TNC port ability to get full TNC command emulation? IE: So
I can just connect minicom or telnet to the port and issue
commands like I do with a hardware TNC2 on my Kenwood HT
& D710ga?
I'm only aware of linbpq32 with it's TNC2 emulation will do
something like this.? It's a bit overkill to run a complete BBS
package to emulate a TNC though.
I saw this once in a forum.. something like pilinbpq or
something stood up the full TNC, but I am having trouble
finding it. Anyone using direwolf with othersoftware to
get a full TNC2?
Can you tell us what you want to do?? Do you just want to make
classic packet connections?? Send UI-packets aka beacons?? Monitor
AX.25 traffic??? If so, Linux's native AX.25 applications can do
those things on a basic level using Direwolf.? There are also higher
level programs out there that are far more powerful to emulate
host-mode programs like PakRatt, PkGold, etc.?? I can speak for
Linpac which I maintain for Linux:
??
a full HOWTO is here:?
There are other packet programs out there for Linux too that are
worth checking out:
??
--David
KI6ZHD
|
Components to get full TNC?
Would anyone be able to tell me what software (Compass Linux on a Raspberry Pi) would be used with direwolfs KISS TNC port ability to get full TNC command emulation? IE: So I can just connect minicom or telnet to the port and issue commands like I do with a hardware TNC2 on my Kenwood HT & D710ga? I saw this once in a forum.. something like pilinbpq or something stood up the full TNC, but I am having trouble finding it. Anyone using direwolf with othersoftware to get a full TNC2? Nick
|
Re: Bluetooth SPP w/ APRSDroid
On 09/03/2017 19:42, mike_ph4@... [direwolf_packet] wrote:
I've been researching and trying to see if it's at all possible to run Dire Wolf with a virtual TNC over Bluetooth SPP for use with APRSDroid. I can easily do it over TCP/IP, but Bluetooth is more convenient and suits my project a bit better. Any have any ideas?
I've managed to get a very crude hack working to connect APRSDroid and Direwolf on a Pi Zero W. Pi Zero W has built-in WiFi and Bluetooth. Paired my Nexus 7 with the Pi Zero W. Make the Pi discoverable:| $ sudo hciconfig hci0 piscan Then search and pair from the Nexus. | Configure APRSDroid to use connection protocol - Bluetooth TNC. Connection configuration - client mode. Bluetooth channel 22. On the Pi, I use socat to connect the Bluetooth rfcomm0 device that gets created on connection to the kiss tnc service in Direwolf (tcp port 8001). Start direwolf in one terminal window. In another terminal, start the rfcomm service which spawns socat to connect to the kiss tnc in Direwolf: $ sudo rfcomm watch /dev/rfcomm0 22 socat -d -d tcp4:127.0.0.1:8001 /dev/rfcomm0 Now try and send some beacons from APRSDroid. You should see incoming connections in the rfcomm terminal window, then a "Connected to KISS client" message in Direwolf followed by a beacon. TX appears to work, I'll see if I can verify RX when I get time... 73 Nick.
|
Re: Raspberry Pi Zero VERY long transmit delay
Hello Arnold,
?
" When your Rpi isn't connected to the
network, what is in the /etc/resolv.conf file??
Anything?? Is DNSMasq running? ?"
How would I know??? ?I suppose I could connect to the
serial port for a terminal. ?Would that give you the
answer?
Yes, or connect up the HDMI display with a USB keyboard.
--David
KI6ZHD
|
Re: Raspberry Pi Zero VERY long transmit delay
David, "When your Rpi isn't connected to the network, what is in the /etc/resolv.conf file?? Anything?? Is DNSMasq running? ?"
How would I know??? ?I suppose I could connect to the serial port for a terminal. ?Would that give you the answer?
Arnold
From: "David Ranch dranch@... [direwolf_packet]" To: "direwolf packet" Sent: Sunday, March 12, 2017 8:32:20 PM Subject: Re: [direwolf_packet] Raspberry Pi Zero VERY long transmit delay
?
Hey Arnold,
Off the wall thought, it is possible that without any Ethernet device in the Pi Zero that something is looking for it, and kills things? ?That seems to be a common thread in my troubleshooting. ?If I have some sort of Ethernet or WiFi connected or not, nothing fails. ?When I don't have something, then I get this failure.
When your Rpi isn't connected to the network, what is in the /etc/resolv.conf file?? Anything?? Is DNSMasq running?? --David
|
Re: Raspberry Pi Zero VERY long transmit delay
Hey Arnold,
Off the wall
thought, it is possible that without any Ethernet
device in the Pi Zero that something is looking for
it, and kills things? ?That seems to be a common
thread in my troubleshooting. ?If I have some sort of
Ethernet or WiFi connected or not, nothing fails.
?When I don't have something, then I get this failure.
When your Rpi isn't connected to the network, what is in the
/etc/resolv.conf file?? Anything?? Is DNSMasq running??
--David
|
Re: Raspberry Pi Zero VERY long transmit delay
Somehow I missed putting this in the email. ?It IS in the DireWolf configuration.
ADEVICE plughw:1,0
ACHANNELS 1
CHANNEL 0
# Home call
MYCALL KQ6DI-4
I DO have PulseAudio removed. ?I don't think it is included in the latest Raspberry Pi Jessie OS, but I went through the steps anyway.
Off the wall thought, it is possible that without any Ethernet device in the Pi Zero that something is looking for it, and kills things? ?That seems to be a common thread in my troubleshooting. ?If I have some sort of Ethernet or WiFi connected or not, nothing fails. ?When I don't have something, then I get this failure. ?However, there are other changes going on, so I haven't convinced myself about this. ?I just thought I'd toss that wild thought out.
Running the "Top Command" in another window is an issue in itself. ?I'm trying to run this without any external connection to anything. ?If I do have this connected, then only about 20% of the processor time is used, but I have no idea when I start having issues.
Arnold KQ6DI
From: "wb2osz@... [direwolf_packet]" <direwolf_packet@...> To: "direwolf packet" Sent: Sunday, March 12, 2017 3:33:36 PM Subject: Re: [direwolf_packet] Raspberry Pi Zero VERY long transmit delay
?
Usually you would have something like "ADEVICE?plughw:1,0" when running on the Raspberry Pi. ?I don't see ADEVICE in there which would result in using the "default" device.
Did you make sure that PulseAudio was removed? ?In my experience PulseAudio never worked right on the RPi and my recommendation is to remove it. ? (Note: ?It is fine on larger x86 based systems.)
?? ?Currently section 1.3.
The other thing I would try is running the "top" command in another window? ?What is using a significant amount of CPU time? ?How much idle time is left over?
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Re: Raspberry Pi Zero VERY long transmit delay
Usually you would have something like "ADEVICE?plughw:1,0" when running on the Raspberry Pi. ?I don't see ADEVICE in there which would result in using the "default" device.
Did you make sure that PulseAudio was removed? ?In my experience PulseAudio never worked right on the RPi and my recommendation is to remove it. ? (Note: ?It is fine on larger x86 based systems.)
?? ?Currently section 1.3.
The other thing I would try is running the "top" command in another window? ?What is using a significant amount of CPU time? ?How much idle time is left over?
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Re: Raspberry Pi Zero VERY long transmit delay
David, I should have provided you with the DireWolf configuration. ?The following is the configuration I have for this Zero. ?Anything not included is commented out. ?These are the only active parameters. Arnold KQ6DI
# Home call
MYCALL KQ6DI-4
MODEM 1200
#TXDELAY 25
#TXTAIL 2
PTT GPIO 27
DCD GPIO -17
AGWPORT 0
KISSPORT 0
FIX_BITS 1
# Beacon for Pi Zero
# home location & symbol
PBEACON delay=0:10 every=59:59 symbol="igate" overlay=R lat=38^21.77N long=121^24.76W
# Send Telemetry
#CBEACON delay=14:35 every=30:02 InfoCmd="sudo python makemytelem.py"
#This should only digipeat WIDE1-1
DIGIPEAT 0 0 ^WIDE[3-7]-[1-7]$ ^WIDE[1]-[1]$ TRACE
#Digipeat parameters & filter to desired stations
FILTER 0 0 ( b/KQ6DI/KQ6DI-*/WA6ODP-*/WB6ETY/WB6ETY-*/W6TCP/W6TCP-*/W6ERE-*/KG6AZZ* ) & ( ! b/WA6ODP-3)?
From: "David Ranch dranch@... [direwolf_packet]" To: "direwolf packet" Sent: Saturday, March 11, 2017 3:44:27 PM Subject: Re: [direwolf_packet] Raspberry Pi Zero VERY long transmit delay
?
Hello Arnold,
There have been random reports about these delays and I've seen it too.? I didn't correlate it to being related to having a USB hub in front of the sound device but that's weird.? In the Direwolf docs, it's actually recommended to directly attach the USB sound card to avoid USB hub arbitration issues but Raspbian has changed a *LOT* in the last two years.
With your testing, does your USB hub support external power supplies?? I've found this is almost always required when you either have a Wifi dongle or multiple devices connected to it.?
I highly highly doubt that these delays are coming from the Rpi hardware, the USB sound hardware, or even the OS.? They have to be coming from Direwolf itself.? I believe you're doing all your packet work within Direwolf itself and not using the Linux AX.25 stack right?? Looking into this a little (guessing really), I wonder if this comes from say the PERSISTANCE or TXDELAY parameters:
--
6. Persistence
The P and SlotTime parameters are used to implement true p-persistent CSMA. This works as follows:
Whenever the host queues data for transmission, the TNC begins monitoring the carrier detect signal from the modem. It waits indefinitely for this signal to go inactive. When the channel clears, the TNC generates a random number between 0 and 1. [2] If this number is less than or equal to the parameter p, the TNC keys the transmitter, waits .01 * TXDELAY seconds, and transmits all queued frames. The TNC then unkeys the transmitter and goes back to the idle state. If the random number is greater than p, the TNC delays .01 * SlotTime seconds and repeats the procedure beginning with the sampling of the carrier detect signal. (If the carrier detect signal has gone active in the meantime, the TNC again waits for it to clear before continuing). Note that p = 1 means "transmit as soon as the channel clears"; in this case the p-persistence algorithm degenerates into the 1-persistent CSMA generally used by conventional AX.25 TNCs.
--
The real next step would be to add telemetry to your logs with detailed timestamps to see when the radio is getting keyed up vs. when audio is started, etc.? Looking at the direwolf code:
?? - in the audio.c file, there is the audio_flush routine which has various commented out debug lines that could be enabled (remove the # characters)
?? - in the ptt.c file, there is the much nicer "ptt_debug_level" variable and if you set this to 1 or 2 and recompile, you'll get more details
You might try fiddling around with some of these items, recompile Direwolf, and see what you get in the logs.?? Let us know what you find!
--David
KI6ZHD
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Re: Raspberry Pi Zero VERY long transmit delay
David, Correct, I am not using any Linux AX.25 Stack. ?I am also not including any HamLib support in the DireWolf build. The Hub I am using (that works) could have an external supply, but it wasn't included and wasn't specified, so I don't have one there. I don't have any?PERSISTANCE or TXDELAY parameters set, I'm just using the default.
The odd part here is the transmitter keys up with no audio, so the channel is or should be clear. ?Even if it was hearing itself, no audio out of the sound card doesn't have much modulation for Persistance to wait for.
If you provide more details on what you would like for Telemetry, I'd be glad to try. ?I'm just not sure what I should set, and how... ?Other telemetry is not an issue for me, just don't know what goes here.
I did find another USB hub (not powered) and a micro to mini USB adapter that should permit it to work in the Zero. ?Since the long delay isn't always present, I like to run one test long enough that I have a positive result (yes or no) for each configuration.
At least I have a configuration that works now, even if it isn't ideal. ?So we'll figure it out.
Arnold KQ6D
From: "David Ranch dranch@... [direwolf_packet]" To: "direwolf packet" Sent: Saturday, March 11, 2017 3:44:27 PM Subject: Re: [direwolf_packet] Raspberry Pi Zero VERY long transmit delay
?
Hello Arnold,
There have been random reports about these delays and I've seen it too.? I didn't correlate it to being related to having a USB hub in front of the sound device but that's weird.? In the Direwolf docs, it's actually recommended to directly attach the USB sound card to avoid USB hub arbitration issues but Raspbian has changed a *LOT* in the last two years.
With your testing, does your USB hub support external power supplies?? I've found this is almost always required when you either have a Wifi dongle or multiple devices connected to it.?
I highly highly doubt that these delays are coming from the Rpi hardware, the USB sound hardware, or even the OS.? They have to be coming from Direwolf itself.? I believe you're doing all your packet work within Direwolf itself and not using the Linux AX.25 stack right?? Looking into this a little (guessing really), I wonder if this comes from say the PERSISTANCE or TXDELAY parameters:
--
6. Persistence
The P and SlotTime parameters are used to implement true p-persistent CSMA. This works as follows:
Whenever the host queues data for transmission, the TNC begins monitoring the carrier detect signal from the modem. It waits indefinitely for this signal to go inactive. When the channel clears, the TNC generates a random number between 0 and 1. [2] If this number is less than or equal to the parameter p, the TNC keys the transmitter, waits .01 * TXDELAY seconds, and transmits all queued frames. The TNC then unkeys the transmitter and goes back to the idle state. If the random number is greater than p, the TNC delays .01 * SlotTime seconds and repeats the procedure beginning with the sampling of the carrier detect signal. (If the carrier detect signal has gone active in the meantime, the TNC again waits for it to clear before continuing). Note that p = 1 means "transmit as soon as the channel clears"; in this case the p-persistence algorithm degenerates into the 1-persistent CSMA generally used by conventional AX.25 TNCs.
--
The real next step would be to add telemetry to your logs with detailed timestamps to see when the radio is getting keyed up vs. when audio is started, etc.? Looking at the direwolf code:
?? - in the audio.c file, there is the audio_flush routine which has various commented out debug lines that could be enabled (remove the # characters)
?? - in the ptt.c file, there is the much nicer "ptt_debug_level" variable and if you set this to 1 or 2 and recompile, you'll get more details
You might try fiddling around with some of these items, recompile Direwolf, and see what you get in the logs.?? Let us know what you find!
--David
KI6ZHD
|
Nick G4IRX