I am trying to record 4 channels with arecord but the last two are all zeros. I have a Behringer UMC404HD which is a 4 channel audio ADC with a USB port. I'm connecting it to machines running different flavors of linux (CentOS, Raspian, ubuntu and Pop!_OS). Only the CentOS one works correctly, giving me 4 channels; the others all seem to accept 4 channels but the last two channels are all 0s.
On the PopOS machine I used
arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: Generic [HD-Audio Generic], device 0: ALC293 Analog [ALC293 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: U192k [UMC404HD 192k], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
and got this
arecord --dump-hw-params -D plughw:2,0 -c 4 -r 96000 -t raw -f S32_LE | hexdump | more
Recording raw data 'stdin' : Signed 32 bit Little Endian, Rate 96000 Hz, Channels 4
HW Params of device "plughw:2,0":
--------------------
ACCESS: MMAP_INTERLEAVED MMAP_NONINTERLEAVED MMAP_COMPLEX RW_INTERLEAVED RW_NONINTERLEAVED
FORMAT: S8 U8 S16_LE S16_BE U16_LE U16_BE S24_LE S24_BE U24_LE U24_BE S32_LE S32_BE U32_LE U32_BE FLOAT_LE FLOAT_BE FLOAT64_LE FLOAT64_BE MU_LAW A_LAW IMA_ADPCM S20_LE S20_BE U20_LE U20_BE S24_3LE S24_3BE U24_3LE U24_3BE S20_3LE S20_3BE U20_3LE U20_3BE S18_3LE S18_3BE U18_3LE U18_3BE
SUBFORMAT: STD
SAMPLE_BITS: [4 64]
FRAME_BITS: [4 640000]
CHANNELS: [1 10000]
RATE: [4000 4294967295)
PERIOD_TIME: [125 743039)
PERIOD_SIZE: (0 3191328204)
PERIOD_BYTES: (0 4294967295)
PERIODS: (0 4294967295]
BUFFER_TIME: [1 4294967295]
BUFFER_SIZE: [1 4294967294]
BUFFER_BYTES: [1 4294967295]
TICK_TIME: ALL
--------------------
0000000 5600 0061 7900 1afb 0000 0000 0000 0000
0000010 1a00 0049 1c00 1b29 0000 0000 0000 0000
0000020 5300 004b e100 1b44 0000 0000 0000 0000
0000030 eb00 005b 5300 1b50 0000 0000 0000 0000
...
0000160 f300 fff5 f000 1071 0000 0000 0000 0000
I've tried both -D hw:2,0 and -D plughw:2,0 to no avail.
The CentOS works fine although the device is different:
arecord -l
output is
arecord --dump-hw-params -D plughw:1,0 -c 4 -r 96000 -t raw -f S32_LE | hexdump | more
Recording raw data 'stdin' : Signed 32 bit Little Endian, Rate 96000 Hz, Channels 4
HW Params of device "plughw:1,0":
--------------------
ACCESS: MMAP_INTERLEAVED MMAP_NONINTERLEAVED MMAP_COMPLEX RW_INTERLEAVED RW_NONINTERLEAVED
FORMAT: S8 U8 S16_LE S16_BE U16_LE U16_BE S24_LE S24_BE U24_LE U24_BE S32_LE S32_BE U32_LE U32_BE FLOAT_LE FLOAT_BE FLOAT64_LE FLOAT64_BE MU_LAW A_LAW IMA_ADPCM S20_LE S20_BE U20_LE U20_BE S24_3LE S24_3BE U24_3LE U24_3BE S20_3LE S20_3BE U20_3LE U20_3BE S18_3LE S18_3BE U18_3LE U18_3BE
SUBFORMAT: STD
SAMPLE_BITS: [4 64]
FRAME_BITS: [4 640000]
CHANNELS: [1 10000]
RATE: [4000 4294967295)
PERIOD_TIME: [125 743039)
PERIOD_SIZE: (0 3191328204)
PERIOD_BYTES: (0 4294967295)
PERIODS: (0 4294967295]
BUFFER_TIME: [1 4294967295]
BUFFER_SIZE: [1 4294967294]
BUFFER_BYTES: [1 4294967295]
TICK_TIME: ALL
--------------------
0000000 f800 005a eb00 1b39 6300 272a 2200 0274
0000010 bc00 0073 4500 1b4e 1400 2605 2900 0235
...
From what I can tell the only difference is the output: all zeros for the last two channels in the PopOS machine and content for the last two channels in the CentOS example. (The RPI and Ubuntu machine behaved the same as the PopOS device).
On a whim, I tried joining the audio group but it did not help.
Thoughts? any advice on what i can try to debug this further? Thanks!
Resolved! It turns out I needed to enable all the channels using AlsaMixer. The missing channels were enabled by using F4 for capture then selecting the channel and hitting the space bar.
You can have udev run a script to automatically enable capture on all inputs and set volume. https://gitlab.com/sbyrne/umc404hd-autocapture
Related
I have an annoying problem with zip and zipnote programs (both in 3.0 version) in my Debian stable platform.
I wish to create a zip archive storing (not compressing) data from standard input, without extra attributes/fields, and giving a name to the resulting file inside the zip file.
My first try was
printf "foodata" | zip -X0 bar.zip -
printf "# -\n#=foofile\n" | zipnote -w bar.zip
where zip create a bar.zip archive, with a stored file "-" containing "foodata", and zipnote rename the file from "-" to "foofile".
First problem (solved): zip, as we can see from zipdetails
001E Filename '-'
001F Extra ID #0001 0001 'ZIP64'
0021 Length 0010
0023 Uncompressed Size 0000000000000007
002B Compressed Size 0000000000000007
receiving data from standard input, doesn't know the size of the resulting file so create a PKZIP 4.5 compatible zip archive (that can exceed 4 GB) using Zip64 extension and adding a Zip64 extra attribute to the file.
And the -X option remove extrafile attributes but doesn't remove the Zip64 extra field.
This problem is easily solvable adding the -fz- option, as stated in zip man page
// .................................VVVV
printf "foodata" | zip -X0 -fz- bar.zip -
Now bar.zip is a PKZIP 2 compatible file and there isn't the Zip64 extra field.
Second problem (not solved): zipnote change the name of the contained file and add the Zip64 field to the file.
I don't know why.
According the zip man page
zip removes the Zip64 extensions if not needed when archive entries are copied (see the -U (--copy) option).
So I understand that
zip bar.zip --out bar-corrected.zip
should create a new bar-corrected.zip archive where the file foofile isZip64free (thefoofileis very short so theZip64` extension isn't needed, I presume).
Unfortunately, this doesn't works: I get the warning
copying: foofile
zip warning: Local Version Needed To Extract does not match CD: foofile
and the resulting file maintain the Zip64 extension.
And seems that doesn't works explicating the filename or adding the -fz- option: I've tried a lot o combinations but (maybe is my fault) without success.
Questions:
(1) can I avoid (and how) that zipnote, changing the name of a file, add the Zip64 fields to it?
(2) otherwise, how can I use zip (with --copy? with -fz-?) to create a new zip archive Zip64 extension free?
[Edit: Updated to use Store rather than Deflate]
Not sure how to achieve what you want with zip and zipnote, but here is an alternative.
echo abc | perl -MIO::Compress::Zip=zip -e ' zip "-" => "out.zip", Method => 0, Name => "member.txt" '
$ unzip -lv out.zip
Archive: out.zip
Length Method Size Cmpr Date Time CRC-32 Name
-------- ------ ------- ---- ---------- ----- -------- ----
4 Stored 4 0% 2019-10-10 21:54 4788814e member.txt
-------- ------- --- -------
4 4 0% 1 file
No Zip64 or extra attributes are present in the zip file.
$ zipdetails out.zip
0000 LOCAL HEADER #1 04034B50
0004 Extract Zip Spec 14 '2.0'
0005 Extract OS 00 'MS-DOS'
0006 General Purpose Flag 0008
[Bit 3] 1 'Streamed'
0008 Compression Method 0000 'Stored'
000A Last Mod Time 4F4AAECA 'Thu Oct 10 21:54:20 2019'
000E CRC 00000000
0012 Compressed Length 00000000
0016 Uncompressed Length 00000000
001A Filename Length 000A
001C Extra Length 0000
001E Filename 'member.txt'
0028 PAYLOAD abc.
002C STREAMING DATA HEADER 08074B50
0030 CRC 4788814E
0034 Compressed Length 00000004
0038 Uncompressed Length 00000004
003C CENTRAL HEADER #1 02014B50
0040 Created Zip Spec 14 '2.0'
0041 Created OS 03 'Unix'
0042 Extract Zip Spec 14 '2.0'
0043 Extract OS 00 'MS-DOS'
0044 General Purpose Flag 0008
[Bit 3] 1 'Streamed'
0046 Compression Method 0000 'Stored'
0048 Last Mod Time 4F4AAECA 'Thu Oct 10 21:54:20 2019'
004C CRC 4788814E
0050 Compressed Length 00000004
0054 Uncompressed Length 00000004
0058 Filename Length 000A
005A Extra Length 0000
005C Comment Length 0000
005E Disk Start 0000
0060 Int File Attributes 0000
[Bit 0] 0 'Binary Data'
0062 Ext File Attributes 81A40000
0066 Local Header Offset 00000000
006A Filename 'member.txt'
0074 END CENTRAL HEADER 06054B50
0078 Number of this disk 0000
007A Central Dir Disk no 0000
007C Entries in this disk 0001
007E Total Entries 0001
0080 Size of Central Dir 00000038
0084 Offset to Central Dir 0000003C
0088 Comment Length 0000
Done
Created a simple script that wraps the previous answer. See streamzip
Usage is
printf "foodata" | streamzip -method=store -member-name=foofile -zipfile=/tmp/bar.zip
This is what unzip thinks is in the zip file
unzip -lv /tmp/bar.zip
Archive: /tmp/bar.zip
Length Method Size Cmpr Date Time CRC-32 Name
-------- ------ ------- ---- ---------- ----- -------- ----
7 Stored 7 0% 2019-10-15 20:25 1b7dd7cd foofile
-------- ------- --- -------
7 7 0% 1 file
I have had problems with this programming board. It is set up correctly seems to be an AVRISP MKII.
I received the following error messages upon flashing with avrdude:
(trusty)chandran#localhost:~$ avrdude -c avrispmkii -p t85 -vv
avrdude: Version 6.0.1, compiled on Oct 21 2013 at 15:55:32
Copyright (c) 2000-2005 Brian Dean, h ttp://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch
System wide configuration file is "/etc/avrdude.conf"
User configuration file is "/home/chandran/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : usb
Using Programmer : avrispmkii
avrdude: usb_open(): cannot read serial number "error sending control
message: Connection timed out"
avrdude: usbdev_open(): Found AVRISP mkII, serno: [unknown]
avrdude: usbdev_recv_frame(): usb_bulk_read(): error submitting URB: No
such file or directory
avrdude: stk500v2_recv_mk2: error in USB receive
avrdude: usbdev_recv_frame(): usb_bulk_read(): error submitting URB: No such file or directory
avrdude: stk500v2_recv_mk2: error in USB receive
avrdude: stk500v2_getsync(): timeout communicating with programmer
AVR Part : ATtiny85
Chip Erase delay : 4500 us
PAGEL : P00
BS2 : P00
RESET disposition : possible i/o
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 6 4 0 no 512 4 0 4000 4500 0xff 0xff
flash 65 6 32 0 yes 8192 64 128 4500 4500 0xff 0xff
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
calibration 0 0 0 0 no 2 0 0 0 0 0x00 0x00
Programmer Type : STK500V2
Description : Atmel AVR ISP mkII
Programmer Model: AVRISP mkII
avrdude: usbdev_recv_frame(): usb_bulk_read(): error submitting URB: No such file or directory
It is hard to identify the issue since my version of the programming board doesn't have such great documentation.
Thanks in advance!
This bug was causing the problems. I simply reverted to the previous version of avrdude (5.11.1) and it worked. By now there is an even newer version of avrdude (6.3), this bug might no longer be a problem in latest version.
Here are some steps:
Revert to an older version of avrdude either by using sudo apt-get install <package-name>=<package-version-number> OR sudo apt-get install <package-name>=<package-version-number>
Check if it works: avrdude -p <your part name> -c <your programmer name (avrispmkII)>
You might have to specify a port. Use something like ''watch ls /dev/tty*'' to find your device if you get an error like this one:
(trusty)chandran#localhost:~$ avrdude -c avrispmkII -p t85
avrdude: ser_open(): can't open device "/dev/ttyS0": No such file or directory
avrdude done. Thank you.
Here is what it will look like when you get it right:
(trusty)chandran#localhost:~$ avrdude -c avrispmkII -p t85 -P usb -vv
avrdude: Version 5.11.1, compiled on Oct 30 2011 at 10:37:28
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch
System wide configuration file is "/etc/avrdude.conf"
User configuration file is "/home/chandran/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : usb
Using Programmer : avrispmkII
avrdude: usb_open(): cannot read serial number "No error"
avrdude: usbdev_open(): Found AVRISP mkII, serno: [unknown]
avrdude: usbdev_open(): using read endpoint 0x83
AVR Part : ATtiny85
Chip Erase delay : 4500 us
PAGEL : P00
BS2 : P00
RESET disposition : possible i/o
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 6 4 0 no 512 4 0 4000 4500 0xff 0xff
flash 65 6 32 0 yes 8192 64 128 4500 4500 0xff 0xff
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
calibration 0 0 0 0 no 2 0 0 0 0 0x00 0x00
Programmer Type : STK500V2
Description : Atmel AVR ISP mkII
Programmer Model: AVRISP mkII
Hardware Version: 0
Firmware Version Master : 1.255
Vtarget : 3.3 V
SCK period : 8.00 us
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude: Device signature = 0x1e930b
avrdude: safemode: lfuse reads as 62
avrdude: safemode: hfuse reads as DF
avrdude: safemode: efuse reads as FF
avrdude: safemode: lfuse reads as 62
avrdude: safemode: hfuse reads as DF
avrdude: safemode: efuse reads as FF
avrdude: safemode: Fuses OK
avrdude done. Thank you.
If this doesn't fix your problem, you might want to look at some other solutions:
https://electronics.stackexchange.com/questions/78302/avrisp-mkii-not-reading-device-signature/189488
https://electronics.stackexchange.com/questions/67757/why-does-my-avrisp-mkii-programmer-not-work
AVRISP MKII doesn't work with AVRDUDE on Linux
https://electronics.stackexchange.com/questions/74298/how-does-avrdude-with-avr-isp-mkii-respond-when-no-target-board-is-connected
Good luck!
I would like to ask you for help: Does somebody know how to detect Cisco Discovery Protocol via tcpdump?
Currently I'm using following command, but I'm not sure by this:
tcpdump -i eth0 -nn "ether[20:2]==0x2000"
Some hints are appreciated. Thank you ...
Charkh
I normally use this filters
tcpdump -nvi bce0 -s 1500 ether dst 01:00:0c:cc:cc:cc
replace bce0 with your network interface.
This will output the hole CDP information, received from ether the switch or the host itself (if you have a cdpd running on the host)
This will output Switch-Name, Port, Switch Type, Software, VLAN and so on...
the output will look similar to this:
$tcpdump -nvi bce0 -s 1500 ether dst 01:00:0c:cc:cc:cc
tcpdump: WARNING: bce0: no IPv4 address assigned
tcpdump: listening on bce0, link-type EN10MB (Ethernet), capture size 1500 bytes
11:43:24.327197 DTPv1, length 39
Domain TLV (0x0001) TLV, length 18, domain-internal
Status TLV (0x0002) TLV, length 5, 0x81
DTP type TLV (0x0003) TLV, length 5, 0xa5
Neighbor TLV (0x0004) TLV, length 10, 6c:50:4d:06:64:01
11:43:44.820865 CDPv2, ttl: 180s, checksum: 692 (unverified), length 477
Device-ID (0x01), length: 40 bytes: 'my-switch.mydomain.net'
Version String (0x05), length: 247 bytes:
Cisco IOS Software, CBS30X0 Software (CBS30X0-IPBASEK9-M), Version 12.2(58)SE1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Thu 05-May-11 03:57 by prod_rel_team
Platform (0x06), length: 20 bytes: 'cisco WS-CBS3020-HPQ'
Address (0x02), length: 13 bytes: IPv4 (1) 1.2.3.4
Port-ID (0x03), length: 18 bytes: 'GigabitEthernet0/1'
Capability (0x04), length: 4 bytes: (0x00000028): L2 Switch, IGMP snooping
Protocol-Hello option (0x08), length: 32 bytes:
VTP Management Domain (0x09), length: 13 bytes: 'doman-internal'
Native VLAN ID (0x0a), length: 2 bytes: 358
Duplex (0x0b), length: 1 byte: full
AVVID trust bitmap (0x12), length: 1 byte: 0x00
AVVID untrusted ports CoS (0x13), length: 1 byte: 0x00
Management Addresses (0x16), length: 13 bytes: IPv4 (1) [IP]
unknown field type (0x1a), length: 12 bytes:
0x0000: 0000 0001 0000 0000 ffff ffff
I use the following command:
tcpdump -nn -v -xx -i eth? -s 1500 -c 1 'ether dst 01:00:0c:cc:cc:cc and (ether[24:2] = 0x2000 or ether[20:2] = 0x2000)'
Where eth? is your ethernet adapter.
It can be used with IBM SEA over trunked connections or over standard copper connections.
I have similar issue as here(AVRISPmkII connection status: Unknown status 0x00) but different setup and changing bitcklock didn't help.
The current setup is atmega328p with external oscillator 16MHz connected to ISP interface of avrisp mkII programmer but whatever I do It keeps on showing the same output all the time:
mike#asus:~/wireless-temp-sens/tests$ sudo avrdude -p atmega328p -P usb -c avrispv2 -U lfuse:w:0xff:m -U hfuse:w:0xd9:m -U efuse:w:0xfe:m -v
avrdude: Version 6.0.1, compiled on Oct 21 2013 at 17:07:18
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch
System wide configuration file is "/etc/avrdude.conf"
User configuration file is "/home/mike/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : usb
Using Programmer : avrispv2
avrdude: usbdev_open(): Found AVRISP mkII, serno: 000200209719
AVR Part : ATmega328P
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 20 4 0 no 1024 4 0 3600 3600 0xff 0xff
flash 65 6 128 0 yes 32768 128 256 4500 4500 0xff 0xff
lfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
efuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
Programmer Type : STK500V2
Description : Atmel AVR ISP V2
Programmer Model: AVRISP mkII
Hardware Version: 1
Firmware Version Master : 1.23
Vtarget : 4.9 V
SCK period : 2053.39 us
avrdude: stk500v2_command(): command failed
avrdude: stk500v2_program_enable(): bad AVRISPmkII connection status: Unknown status 0x00
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
this check.
avrdude done. Thank you.
Any help is appreciated!
Problem resolved! Don't remember what was the reason exactly. I guess clock crystal didn't have proper connections on a breadboard. So, I would say:
Check your wiring
Check your wiring
Check your wiring
I've decided to bring up a GSM Modem for my Linux machine (OpenSuse 12.1 64-bit on Vmware) so that I can use it as the SMS gateway. I've got a Wavecom M1306B GSM modem which provides a USB interface, and obviously there is a USB cable (end to end, GSM Modem to my Desktop) with it.
I tested this modem successfully with my Windows 7 64-bit PC by running some basic commands on it. (like: AT , ATZ, ..)
Here are some of my logs:
machine2:~ # lsusb
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
Bus 001 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
Bus 001 Device 006: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
lsusb -v output for that interface:
Bus 001 Device 006: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x067b Prolific Technology, Inc.
idProduct 0x2303 PL2303 Serial Port
bcdDevice 3.00
iManufacturer 1 Prolific Technology Inc.
iProduct 2 USB-Serial Controller
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 39
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x000a 1x 10 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Status: 0x0000
(Bus Powered)
machine2:/proc # setserial -a /dev/ttyUSB0
/dev/ttyUSB0, Line 0, UART: 16654, Port: 0x0000, IRQ: 0
Baud_base: 460800, close_delay: 0, divisor: 0
closing_wait: infinte
Flags: spd_normal
machine2:/home/smsto/bin # setserial -a /dev/ttyS0
/dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ: 4
Baud_base: 115200, close_delay: 50, divisor: 0
closing_wait: 3000
Flags: spd_normal skip_test
machine2:/home/smsto/bin # setserial -a /dev/ttyS1
/dev/ttyS1, Line 1, UART: 16550A, Port: 0x02f8, IRQ: 3
Baud_base: 115200, close_delay: 50, divisor: 0
closing_wait: 3000
Flags: spd_normal skip_test
machine2:/proc # setserial -G /dev/ttyUSB0
/dev/ttyUSB0 uart 16654 port 0x0000 irq 0 baud_base 460800 spd_normal
machine2:/proc # setserial /dev/ttyUSB0
/dev/ttyUSB0, UART: 16654, Port: 0x0000, IRQ: 0
machine2:/proc/tty/driver # ls -ltr
total 0
-r--r--r-- 1 root root 0 Jan 10 14:03 usbserial
-r--r--r-- 1 root root 0 Jan 10 14:03 serial
machine2:/proc/tty/driver # cat serial
serinfo:1.0 driver revision:
0: uart:16550A port:000003F8 irq:4 tx:0 rx:0 CTS|DSR|CD
1: uart:16550A port:000002F8 irq:3 tx:0 rx:0 CTS|DSR|CD
2: uart:unknown port:000003E8 irq:4
3: uart:unknown port:000002E8 irq:3
4: uart:unknown port:00000000 irq:0
5: uart:unknown port:00000000 irq:0
6: uart:unknown port:00000000 irq:0
7: uart:unknown port:00000000 irq:0
machine2:/proc/tty/driver # cat usbserial
usbserinfo:1.0 driver:2.0
0: module:pl2303 name:"pl2303" vendor:067b product:2303 num_ports:1 port:1 path:usb-0000:02:00.0-2.1
machine2:/proc/tty # cat drivers
/dev/tty /dev/tty 5 0 system:/dev/tty
/dev/console /dev/console 5 1 system:console
/dev/ptmx /dev/ptmx 5 2 system
/dev/vc/0 /dev/vc/0 4 0 system:vtmaster
usbserial /dev/ttyUSB 188 0-253 serial
serial /dev/ttyS 4 64-79 serial
pty_slave /dev/pts 136 0-1048575 pty:slave
pty_master /dev/ptm 128 0-1048575 pty:master
unknown /dev/tty 4 1-63 console
machine2:/proc/tty # dmesg | grep -i tty
[ 1.383652] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 1.424541] serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
[ 1.581063] 00:0a: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 1.654207] 00:0b: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
[ 1.938507] tty tty17: hash matches
[ 2498.137304] usb 1-2.1: pl2303 converter now attached to ttyUSB0
I noticed that the Baud rate of USB0 interface is too much, so i tried to assign 115200 :
machine2:/proc # setserial /dev/ttyUSB0 baud_base 115200
Cannot set serial info: Invalid argument
So, it is the problem ... and I receive this error.
Whenever I try to connect S0, S1, USB0 interfaces via minicom, it simply doesn't work.
Baud_base is not the port speed, it's the maximum speed when a frequency divisor is 1. The ability to set baud_base probably doesn't apply to USB serial device at all, and it's most certainly not what you want.
Use stty to set the port speed, or use cu or minicom for testing (they can set port speed by themselves).
I'm not sure about the baud rate but If you open up another terminal and do cat /dev/ttyUSB0
Then in the first terminal do echo AT > /dev/ttyUSB0 you might get an OK back..not sure if it helps but it should get you a response at least..