# ERROR: TransferPacket: Write failed (ret=0)

**URL:** <https://discourse.myriadrf.org/t/error-transferpacket-write-failed-ret-0/5747>\
**Category:** LimeSDR\
**Created:** [10 February 2020 16:53 UTC](https://discourse.myriadrf.org/t/error-transferpacket-write-failed-ret-0/5747 "2020-02-10T16:53:37Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![yfauser](https://avatars.discourse-cdn.com/v4/letter/y/8491ac/32.png) [@yfauser](https://discourse.myriadrf.org/u/yfauser)\
**Post date:** [10 February 2020 16:53 UTC](https://discourse.myriadrf.org/t/error-transferpacket-write-failed-ret-0/5747/1 "2020-02-10T16:53:37Z")

</div>

Hi!

I have quite some trouble with a LimeSDR-USB board that I bought 1 year ago, and that sat on a shelf until recently when I started experimenting with it.

When trying the quick test ([https://wiki.myriadrf.org/LimeSDR-USB\_Quick\_Test](https://wiki.myriadrf.org/LimeSDR-USB_Quick_Test)), I open the self\_test.ini file and I get the error ''TransferPacket: Write failed (ret=0)" in the Log. The connection to the LimeSDR is then lost until I plug it out and back in again. I tried on two different computers, Windows and Linux with the same symptoms.

Here’s the complete log:

[17:37:04] DEBUG: Estimated reference clock 30.6587 MHz  
[17:37:04] INFO: Reference clock 30.72 MHz  
[17:37:04] INFO: Connected Control port: LimeSDR-USB FW:4 HW:4 Protocol:1 GW:2.21 Ref Clk: 30.72 MHz  
[17:37:12] ERROR: TransferPacket: Read failed (ret=0)  
[17:37:15] ERROR: TransferPacket: Write failed (ret=0)  
[17:37:15] ERROR: TransferPacket: Write failed (ret=0)  
… the Write failed Error repeats a couple of times.

Any ideas? From looking at other past discussions this looks like a hardware error?

Thanks!

- Yves

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<div class="post-metadata">

**Author:** ![yfauser](https://avatars.discourse-cdn.com/v4/letter/y/8491ac/32.png) [@yfauser](https://discourse.myriadrf.org/u/yfauser)\
**Post date:** [10 February 2020 19:19 UTC](https://discourse.myriadrf.org/t/error-transferpacket-write-failed-ret-0/5747/2 "2020-02-10T19:19:17Z")

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I noticed that my above query had a lot of missing information. Sorry about that! Here’s the output of some LimeUtil and SoapSDRUtil commands to help to look at the problem:

root@sdrbase:/home/localadmin# LimeUtil --info  
######################################################

## LimeSuite information summary

######################################################

Version information:  
Library version: v20.01.0-myriadrf1~bionic  
Build timestamp: 2020-01-28  
Interface version: v2020.1.0  
Binary interface: 20.01-1

System resources:  
Installation root: /usr  
User home directory: /root  
App data directory: /root/.local/share/LimeSuite  
Config directory: /root/.limesuite  
Image search paths:  
- /root/.local/share/LimeSuite/images  
- /usr/share/LimeSuite/images

Supported connections:

- FT601
- FX3
- PCIEXillybus

root@sdrbase:/home/localadmin# LimeUtil --find

- [LimeSDR-USB, media=USB 3.0, module=FX3, addr=1d50:6108, serial=00090706024D1E10]

root@sdrbase:/home/localadmin# SoapySDRUtil --probe  
######################################################

## Soapy SDR – the SDR abstraction library

######################################################

Probe device  
[INFO] Make connection: ‘LimeSDR-USB [USB 3.0] 90706024D1E10’  
[INFO] Reference clock 30.72 MHz  
[INFO] Device name: LimeSDR-USB  
[INFO] Reference: 30.72 MHz  
[INFO] LMS7002M register cache: Disabled

* * *

## – Device identification

driver=FX3  
hardware=LimeSDR-USB  
boardSerialNumber=0x90706024d1e10  
firmwareVersion=4  
gatewareVersion=2.22  
hardwareVersion=4  
protocolVersion=1

* * *

## – Peripheral summary

Channels: 2 Rx, 2 Tx  
Timestamps: YES  
Sensors: clock\_locked, lms7\_temp  
Registers: BBIC, RFIC0  
Other Settings:  
\* SAVE\_CONFIG - Save LMS settings to file  
[key=SAVE\_CONFIG, type=string]  
\* LOAD\_CONFIG - Load LMS settings from file  
[key=LOAD\_CONFIG, type=string]  
\* OVERSAMPLING - oversampling ratio (0 - auto)  
[key=OVERSAMPLING, type=int, options=(0, 1, 2, 4, 8, 16, 32)]  
GPIOs: MAIN

* * *

## – RX Channel 0

Full-duplex: YES  
Supports AGC: NO  
Stream formats: CF32, CS12, CS16  
Native format: CS16 [full-scale=32767]  
Stream args:  
\* Buffer Length - The buffer transfer size over the link.  
[key=bufferLength, units=samples, default=0, type=int]  
\* Link Format - The format of the samples over the link.  
[key=linkFormat, default=CS16, type=string, options=(CS16, CS12)]  
\* Skip Calibration - Skip automatic activation calibration.  
[key=skipCal, default=false, type=bool]  
\* align phase - Attempt to align phase of Rx channels.  
[key=alignPhase, default=false, type=bool]  
Antennas: NONE, LNAH, LNAL, LNAW, LB1, LB2  
Corrections: DC removal, DC offset, IQ balance  
Full gain range: [-12, 61] dB  
TIA gain range: [0, 12] dB  
LNA gain range: [0, 30] dB  
PGA gain range: [-12, 19] dB  
Full freq range: [0, 3800] MHz  
RF freq range: [30, 3800] MHz  
BB freq range: [-10, 10] MHz  
Tune args:  
\* LO Offset - Tune the LO with an offset and compensate with the baseband CORDIC.  
[key=OFFSET, units=Hz, default=0.0, type=float, range=[-1e+07, 1e+07]]  
\* BB - Specify a specific value for this component or IGNORE to skip tuning it.  
[key=BB, units=Hz, default=DEFAULT, type=float, range=[-1e+07, 1e+07], options=(DEFAULT, IGNORE)]  
Sample rates: [0.1, 65] MSps  
Filter bandwidths: [1.4001, 130] MHz  
Sensors: lo\_locked  
Other Settings:  
\* TSP\_CONST - Digital DC test signal level in LMS7002M TSP chain.  
[key=TSP\_CONST, default=16383, type=int, range=[0, 32767]]  
\* CALIBRATE - DC/IQ calibration bandwidth  
[key=CALIBRATE, type=float, range=[2.5e+06, 1.2e+08]]  
\* ENABLE\_GFIR\_LPF - LPF bandwidth (must be set after sample rate)  
[key=ENABLE\_GFIR\_LPF, type=float]  
\* TSG\_NCO - Enable NCO test signal  
[key=TSG\_NCO, default=4, type=int, options=(-1, 4, 8)]

* * *

## – RX Channel 1

Full-duplex: YES  
Supports AGC: NO  
Stream formats: CF32, CS12, CS16  
Native format: CS16 [full-scale=32767]  
Stream args:  
\* Buffer Length - The buffer transfer size over the link.  
[key=bufferLength, units=samples, default=0, type=int]  
\* Link Format - The format of the samples over the link.  
[key=linkFormat, default=CS16, type=string, options=(CS16, CS12)]  
\* Skip Calibration - Skip automatic activation calibration.  
[key=skipCal, default=false, type=bool]  
\* align phase - Attempt to align phase of Rx channels.  
[key=alignPhase, default=false, type=bool]  
Antennas: NONE, LNAH, LNAL, LNAW, LB1, LB2  
Corrections: DC removal, DC offset, IQ balance  
Full gain range: [-12, 61] dB  
TIA gain range: [0, 12] dB  
LNA gain range: [0, 30] dB  
PGA gain range: [-12, 19] dB  
Full freq range: [0, 3800] MHz  
RF freq range: [30, 3800] MHz  
BB freq range: [-10, 10] MHz  
Tune args:  
\* LO Offset - Tune the LO with an offset and compensate with the baseband CORDIC.  
[key=OFFSET, units=Hz, default=0.0, type=float, range=[-1e+07, 1e+07]]  
\* BB - Specify a specific value for this component or IGNORE to skip tuning it.  
[key=BB, units=Hz, default=DEFAULT, type=float, range=[-1e+07, 1e+07], options=(DEFAULT, IGNORE)]  
Sample rates: [0.1, 65] MSps  
Filter bandwidths: [1.4001, 130] MHz  
Sensors: lo\_locked  
Other Settings:  
\* TSP\_CONST - Digital DC test signal level in LMS7002M TSP chain.  
[key=TSP\_CONST, default=16383, type=int, range=[0, 32767]]  
\* CALIBRATE - DC/IQ calibration bandwidth  
[key=CALIBRATE, type=float, range=[2.5e+06, 1.2e+08]]  
\* ENABLE\_GFIR\_LPF - LPF bandwidth (must be set after sample rate)  
[key=ENABLE\_GFIR\_LPF, type=float]  
\* TSG\_NCO - Enable NCO test signal  
[key=TSG\_NCO, default=4, type=int, options=(-1, 4, 8)]

* * *

## – TX Channel 0

Full-duplex: YES  
Supports AGC: NO  
Stream formats: CF32, CS12, CS16  
Native format: CS16 [full-scale=32767]  
Stream args:  
\* Buffer Length - The buffer transfer size over the link.  
[key=bufferLength, units=samples, default=0, type=int]  
\* Link Format - The format of the samples over the link.  
[key=linkFormat, default=CS16, type=string, options=(CS16, CS12)]  
\* Skip Calibration - Skip automatic activation calibration.  
[key=skipCal, default=false, type=bool]  
\* align phase - Attempt to align phase of Rx channels.  
[key=alignPhase, default=false, type=bool]  
Antennas: NONE, BAND1, BAND2  
Corrections: DC offset, IQ balance  
Full gain range: [-12, 64] dB  
PAD gain range: [0, 52] dB  
IAMP gain range: [-12, 12] dB  
Full freq range: [0, 3800] MHz  
RF freq range: [30, 3800] MHz  
BB freq range: [-10, 10] MHz  
Tune args:  
\* LO Offset - Tune the LO with an offset and compensate with the baseband CORDIC.  
[key=OFFSET, units=Hz, default=0.0, type=float, range=[-1e+07, 1e+07]]  
\* BB - Specify a specific value for this component or IGNORE to skip tuning it.  
[key=BB, units=Hz, default=DEFAULT, type=float, range=[-1e+07, 1e+07], options=(DEFAULT, IGNORE)]  
Sample rates: [0.1, 65] MSps  
Filter bandwidths: [5, 40], [50, 130] MHz  
Sensors: lo\_locked  
Other Settings:  
\* TSP\_CONST - Digital DC test signal level in LMS7002M TSP chain.  
[key=TSP\_CONST, default=16383, type=int, range=[0, 32767]]  
\* CALIBRATE - DC/IQ calibration bandwidth  
[key=CALIBRATE, type=float, range=[2.5e+06, 1.2e+08]]  
\* ENABLE\_GFIR\_LPF - LPF bandwidth (must be set after sample rate)  
[key=ENABLE\_GFIR\_LPF, type=float]  
\* TSG\_NCO - Enable NCO test signal  
[key=TSG\_NCO, default=4, type=int, options=(-1, 4, 8)]

* * *

## – TX Channel 1

Full-duplex: YES  
Supports AGC: NO  
Stream formats: CF32, CS12, CS16  
Native format: CS16 [full-scale=32767]  
Stream args:  
\* Buffer Length - The buffer transfer size over the link.  
[key=bufferLength, units=samples, default=0, type=int]  
\* Link Format - The format of the samples over the link.  
[key=linkFormat, default=CS16, type=string, options=(CS16, CS12)]  
\* Skip Calibration - Skip automatic activation calibration.  
[key=skipCal, default=false, type=bool]  
\* align phase - Attempt to align phase of Rx channels.  
[key=alignPhase, default=false, type=bool]  
Antennas: NONE, BAND1, BAND2  
Corrections: DC offset, IQ balance  
Full gain range: [-12, 64] dB  
PAD gain range: [0, 52] dB  
IAMP gain range: [-12, 12] dB  
Full freq range: [0, 3800] MHz  
RF freq range: [30, 3800] MHz  
BB freq range: [-10, 10] MHz  
Tune args:  
\* LO Offset - Tune the LO with an offset and compensate with the baseband CORDIC.  
[key=OFFSET, units=Hz, default=0.0, type=float, range=[-1e+07, 1e+07]]  
\* BB - Specify a specific value for this component or IGNORE to skip tuning it.  
[key=BB, units=Hz, default=DEFAULT, type=float, range=[-1e+07, 1e+07], options=(DEFAULT, IGNORE)]  
Sample rates: [0.1, 65] MSps  
Filter bandwidths: [5, 40], [50, 130] MHz  
Sensors: lo\_locked  
Other Settings:  
\* TSP\_CONST - Digital DC test signal level in LMS7002M TSP chain.  
[key=TSP\_CONST, default=16383, type=int, range=[0, 32767]]  
\* CALIBRATE - DC/IQ calibration bandwidth  
[key=CALIBRATE, type=float, range=[2.5e+06, 1.2e+08]]  
\* ENABLE\_GFIR\_LPF - LPF bandwidth (must be set after sample rate)  
[key=ENABLE\_GFIR\_LPF, type=float]  
\* TSG\_NCO - Enable NCO test signal  
[key=TSG\_NCO, default=4, type=int, options=(-1, 4, 8)]

Thanks!

- Yves

---

<div class="post-metadata">

**Author:** ![yfauser](https://avatars.discourse-cdn.com/v4/letter/y/8491ac/32.png) [@yfauser](https://discourse.myriadrf.org/u/yfauser)\
**Post date:** [12 February 2020 11:33 UTC](https://discourse.myriadrf.org/t/error-transferpacket-write-failed-ret-0/5747/3 "2020-02-12T11:33:22Z")

</div>

Quick update: The issue seems to be caused by the USB extension cable that I use (rated as USB 3.0 cable). When I connect the LimeSDR USB directly to the USB port, without the USB extension cable, the issue disappears. I’ll post updates here once I have everything working

---

<div class="post-metadata">

**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [13 February 2020 15:20 UTC](https://discourse.myriadrf.org/t/error-transferpacket-write-failed-ret-0/5747/4 "2020-02-13T15:20:39Z")

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Right, so we’ve seen this before and glad to hear it’s not an issue with the SDR.

---

<div class="post-metadata">

**Author:** ![Pooya](https://avatars.discourse-cdn.com/v4/letter/p/ba8739/32.png) [@Pooya](https://discourse.myriadrf.org/u/Pooya)\
**Post date:** [9 February 2021 12:02 UTC](https://discourse.myriadrf.org/t/error-transferpacket-write-failed-ret-0/5747/5 "2021-02-09T12:02:21Z")

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Hi, I have the same issue!

I also pluged in directly to USB 3 Port but the problem is still there!!!