LimeSDR Family » History » Version 2
laforge, 06/13/2017 06:03 PM
1 | 1 | laforge | {{>toc}} |
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2 | |||
3 | h1. LimeSDR |
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4 | |||
5 | The LimeSDR is a low-cost SDR board featuring the Lime Microsystems LMS7002 RF chip. |
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6 | |||
7 | h2. RF Power |
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8 | |||
9 | h2. Clock |
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10 | |||
11 | The on-board clock is a 250ppb VCTCXO. GSM strictly requires 30ppb, but 250ppb _should_ be sufficient for laboratory use. |
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12 | |||
13 | h3. Clock Calibration |
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14 | |||
15 | TBD |
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16 | |||
17 | h3. Using external clock reference |
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18 | |||
19 | TBD |
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20 | |||
21 | h2. OsmoTRX on LimeSDR |
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22 | |||
23 | In terms of OsmoTRX support, you will a relatively complex driver stack consisting of: |
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24 | 2 | laforge | * "LimeSuite":https://github.com/myriadrf/LimeSuite.git containing the actual drivers and utilities for LimeSDR |
25 | 1 | laforge | * "SoapySDR":https://github.com/pothosware/SoapySDR.git as middleware that wraps LimeSuite |
26 | * "SoapyUHD":https://github.com/pothosware/SoapyUHD.git as plug-in exposing SoapySDR devices to UHD |
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27 | * UHD as the driver interface below OsmoTRX |
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28 | |||
29 | You will need to observe the following dependencies when building the above: |
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30 | # SoapyUHD depends on SoapySDR |
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31 | # LimeSuite depends on SoapySDR. |
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32 | |||
33 | h3. Verifying the driver stack |
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34 | |||
35 | You can ensure that LimeSuite recognizes your device using the *LimeUtil* part of LimeSuite: |
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36 | |||
37 | <pre> |
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38 | $ LimeUtil --find 109/0/0 |
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39 | * [LimeSDR-USB, media=USB 3.0, module=STREAM, addr=1d50:6108, serial=0009060B00xxyyzz] |
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40 | </pre> |
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41 | |||
42 | You can ensure that SoapySDR and LimeSuite work together as expected using the *SoapySDRUtil* part of SoapySDR: |
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43 | |||
44 | <pre> |
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45 | $ ./SoapySDRUtil --find 101/0/0 |
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46 | ###################################################### |
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47 | ## Soapy SDR -- the SDR abstraction library |
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48 | ###################################################### |
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49 | |||
50 | linux; GNU C++ version 6.3.0 20170221; Boost_106200; UHD_003.009.005-0-unknown |
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51 | |||
52 | Found device 0 |
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53 | addr = 1d50:6108 |
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54 | driver = lime |
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55 | label = LimeSDR-USB [USB 3.0] 9060B00462B1C |
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56 | media = USB 3.0 |
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57 | module = STREAM |
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58 | name = LimeSDR-USB |
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59 | serial = 0009060B00xxyyzz |
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60 | </pre> |