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#1 2016-03-08 03:00:47
- bk
- Member
- Registered: 2016-03-08
- Posts: 7
Is this right output for lf hid fskdemod
I was running pm3-bin-0.0.5 and things were good.
When I ran the lf hid fskdemod I got back a card number as expected.
I decided to upgrade to the latest version and now it does not output the card number.
Been troubleshooting for 2 days, downgraded to pm3-bin-2.2.0 and I get the same results.
proxmark3> hw version
[[[ Cached information ]]]
Prox/RFID mark3 RFID instrument
bootrom: /-suspect 2015-08-16 18:49:55
os: /-suspect 2015-08-16 18:50:03
LF FPGA image built for 2s30vq100 on 2015/03/06 at 07:38:04
HF FPGA image built for 2s30vq100 on 2015/06/22 at 21:47:54
uC: AT91SAM7S256 Rev B
Embedded Processor: ARM7TDMI
Nonvolatile Program Memory Size: 256K bytes. Used: 166521 bytes (64%). Free: 95623 bytes (36%).
Second Nonvolatile Program Memory Size: None
Internal SRAM Size: 64K bytes
Architecture Identifier: AT91SAM7Sxx Series
Nonvolatile Program Memory Type: Embedded Flash Memory
proxmark3> hw tune
Measuring antenna characteristics, please wait......#db# DownloadFPGA(len: 42096)
.
# LF antenna: 16.50 V @ 125.00 kHz
# LF antenna: 13.06 V @ 134.00 kHz
# LF optimal: 18.43 V @ 127.66 kHz
# HF antenna: 0.28 V @ 13.56 MHz
# Your HF antenna is unusable.
Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.
proxmark3> lf hid fskdemod
#db# DownloadFPGA(len: 42096) 
#db# Stopped
proxmark3>
I used to get the card number here and now I di not get anything.
The leds are flashing like they should but nothing outputs to the screen.
Any ideas on what I am doing wrong?
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#2 2016-03-08 03:41:21
- marshmellow
- Contributor
- From: US
- Registered: 2013-06-10
- Posts: 2,302
Re: Is this right output for lf hid fskdemod
Try compiling the latest github code, flash and let us know if you still have the issue.
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#3 2016-03-09 02:19:00
- bk
- Member
- Registered: 2016-03-08
- Posts: 7
Re: Is this right output for lf hid fskdemod
OK latest build, flashed and same results:
Nonvolatile Program Memory Size: 256K bytes. Used: 170515 bytes (65%). Free: 91629 bytes (35%).
Second Nonvolatile Program Memory Size: None
Internal SRAM Size: 64K bytes
Architecture Identifier: AT91SAM7Sxx Series
Nonvolatile Program Memory Type: Embedded Flash Memory
proxmark3> hw version
[[[ Cached information ]]]
Prox/RFID mark3 RFID instrument
bootrom: /-suspect 2016-03-09 01:00:35
os: /-suspect 2016-03-09 01:00:52
LF FPGA image built for 2s30vq100 on 2015/03/06 at 07:38:04
HF FPGA image built for 2s30vq100 on 2015/11/ 2 at 9: 8: 8
uC: AT91SAM7S256 Rev B
Embedded Processor: ARM7TDMI
Nonvolatile Program Memory Size: 256K bytes. Used: 170515 bytes (65%). Free: 91629 bytes (35%).
Second Nonvolatile Program Memory Size: None
Internal SRAM Size: 64K bytes
Architecture Identifier: AT91SAM7Sxx Series
Nonvolatile Program Memory Type: Embedded Flash Memory
proxmark3> hw tune
Measuring antenna characteristics, please wait...#db# DownloadFPGA(len: 42096)
....#db# DownloadFPGA(len: 42096)
# LF antenna: 16.09 V @ 125.00 kHz
# LF antenna: 13.34 V @ 134.00 kHz
# LF optimal: 18.29 V @ 127.66 kHz
# HF antenna: 0.28 V @ 13.56 MHz
# Your HF antenna is unusable.
Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.
proxmark3> lf hid fskdemod
#db# DownloadFPGA(len: 42096)
#db# Stopped
proxmark3>
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#4 2016-03-09 05:56:15
- marshmellow
- Contributor
- From: US
- Registered: 2013-06-10
- Posts: 2,302
Re: Is this right output for lf hid fskdemod
i'll take a closer look tomorrow. could you post a trace?
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#5 2016-03-09 18:29:46
- bk
- Member
- Registered: 2016-03-08
- Posts: 7
Re: Is this right output for lf hid fskdemod
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#6 2016-03-09 19:40:55
- marshmellow
- Contributor
- From: US
- Registered: 2013-06-10
- Posts: 2,302
Re: Is this right output for lf hid fskdemod
sorry i meant the card trace ( use `lf read` `data samples` `data save [tracename]` post trace file.
i confirmed on my end that i cannot reproduce the error. - you are sure your tag is HID and LF?
you said before that the "The leds are flashing like they should" which lights specifically are blinking?
have you tried other lf commands (lf search)?
it appears you had a few errors during compiling, i'm not sure what they are might be a file access error (make sure read/write ability on the folder is there.)
Last edited by marshmellow (2016-03-09 19:42:23)
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#7 2016-03-09 19:59:56
- iceman
- Administrator
- Registered: 2013-04-25
- Posts: 9,536
- Website
Re: Is this right output for lf hid fskdemod
Please, stop posting compile output. If needed make a pastebin, and post the link to it instead.
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#8 2016-03-14 02:04:32
- bk
- Member
- Registered: 2016-03-08
- Posts: 7
Re: Is this right output for lf hid fskdemod
Sorry for the delay and output post.
I am getting back all 127 in the trace file, I know the card is good and had been read before.
The antenna tune looks good. Not sure where to go next.
Thanks for your help
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#9 2016-03-14 02:19:13
- marshmellow
- Contributor
- From: US
- Registered: 2013-06-10
- Posts: 2,302
Re: Is this right output for lf hid fskdemod
127 would be the peak of a wave it would be expected to cycle from that to -127 in wave patterns. Can you post the full file?
A screenshot of the 'data plot' window would be helpful if for some reason you don't link the whole trace. (Run after lf read and data samples)
Last edited by marshmellow (2016-03-14 02:27:05)
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#10 2016-03-15 23:04:35
- bk
- Member
- Registered: 2016-03-08
- Posts: 7
Re: Is this right output for lf hid fskdemod
Ran commands in this order: lf read, data samples, data save data.txt
The entire output file is 127, no other value is listed for each of the 39999 lines.
Command output window:
proxmark3> hw tune
Measuring antenna characteristics, please wait...#db# DownloadFPGA(len: 42096)
....#db# DownloadFPGA(len: 42096)
# LF antenna: 16.09 V @ 125.00 kHz
# LF antenna: 13.47 V @ 134.00 kHz
# LF optimal: 18.29 V @ 127.66 kHz
# HF antenna: 0.25 V @ 13.56 MHz
# Your HF antenna is unusable.
Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.
proxmark3> lf read
#db# Sampling config:
#db# [q] divisor: 95
#db# bps: 8
#db# [d] decimation: 1
#db# [a] averaging: 1
#db# [t] trigger threshold: 0
#db# DownloadFPGA(len: 42096)
#db# Done, saved 40000 out of 40000 seen samples at 8 bits/sample
#db# buffer samples: ff ff ff ff ff ff ff ff ...
proxmark3> data samples
Reading 39999 bytes from device memory
Data fetched
Samples @ 8 bits/smpl, decimation 1:1
proxmark3> data save data.txt
saved to 'data.txt'
proxmark3>
I also tried using my Mac and I am getting the same results. I thought that it might be a Win10 issue with the client.
The antenna looks good and I know the badge is good.
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#11 2016-03-15 23:39:09
- marshmellow
- Contributor
- From: US
- Registered: 2013-06-10
- Posts: 2,302
Re: Is this right output for lf hid fskdemod
Do you get the same result with no tag on the antenna?
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#12 2016-03-16 00:27:26
- bk
- Member
- Registered: 2016-03-08
- Posts: 7
Re: Is this right output for lf hid fskdemod
yes for the badge in question. Other test badges that I am not interested in give me a little variety 127 +- 5 but not the difference I would expect.
Do you think the antenna is bad?
Antenna tune without badge on it:
proxmark3> hw tune
Measuring antenna characteristics, please wait........#db# DownloadFPGA(len: 42096)
.
# LF antenna: 16.36 V @ 125.00 kHz
# LF antenna: 13.06 V @ 134.00 kHz
# LF optimal: 18.43 V @ 127.66 kHz
# HF antenna: 0.28 V @ 13.56 MHz
# Your HF antenna is unusable.
Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.
Antenna tune with badge on it:
proxmark3> hw tune
Measuring antenna characteristics, please wait...#db# DownloadFPGA(len: 42096)
......#db# DownloadFPGA(len: 42096)
.
# LF antenna: 13.75 V @ 125.00 kHz
# LF antenna: 13.89 V @ 134.00 kHz
# LF optimal: 16.09 V @ 129.03 kHz
# HF antenna: 0.28 V @ 13.56 MHz
# Your HF antenna is unusable.
Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.
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#13 2016-03-16 01:08:04
- marshmellow
- Contributor
- From: US
- Registered: 2013-06-10
- Posts: 2,302
Re: Is this right output for lf hid fskdemod
I think it is one of two things.
1 your arm firmware is corrupt or not matched with the client version. Or
2 your pm3 has fried some part of the lf circuit.
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#14 2016-03-16 02:05:39
- bk
- Member
- Registered: 2016-03-08
- Posts: 7
Re: Is this right output for lf hid fskdemod
I believe it is #2. Looks and smells fine but.....
All versions I flashed and tried yield the same results. Even on different machines.
Looking at the Proxmark3 v2
Thanks for you help.
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#15 2016-03-16 05:23:32
- Apt-Get
- Contributor
- Registered: 2015-12-23
- Posts: 111
Re: Is this right output for lf hid fskdemod
tried different antenna cables? make sure they are not kinked or anything?
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