Getting Started with the LimeNET-Micro
1 Basic setup
To get LimeNET-Micro board up and running:
- Select how the board will be powered by placing a jumper on J27 header;
- Connect mouse and keyboard to J10 USB connectors;
- Connect monitor cable to J19 HDMI connector;
- Insert CM3 module into J13 socket (or CM3(L) module into J13 and uSD card into J16 slot);
- Flash eMMC or uSD card;
- Install LimeSuite
1.1 Powering the board
LimeNET-Micro board can be powered in three ways:
- Power over Ethernet – using RJ45 connector and power sourcing equipment (PSE) such as PoE capable network switch or PoE injector. LimeNET-Micro board works with PSE supplying power in “Mode A/Endspan” as well in “Mode B/Midspan” modes;
- DC connector - 5V power source connected to J28 power jack should be capable to provide 2A-3A current;
- microUSB port - 5V power source connected to J15 connector should be capable to provide 2A-3A current;
Power source can be selected fitting jumper in one of the three positions on J27 header (see Figure 1):
- A (pins 5-6) – 5V micro USB;
- B (pins 3-4) – 5V external DC;
- C (pins 1-2) – Power over Ethernet;
1.2 Flashing eMMC or uSD card
To flash eMMC or uSD card with latest Raspbian image please follow these steps:
- Download Raspbian image file by following this [link].
- Choose how the board will be powered by mounting a jumper on J27 header.
- Mount “USB boot”(J14) and unmount "EXT USB"(J18) jumpers.
- Insert CM3 module into J13 socket (or CM3(L) module into J13 and uSD card into J16 slot).
- Flash Raspbian image by following this guide [link].
- Remove “USB boot”(J14) jumper and reapply power. LimeNET-Micro should now boot to newly installed Raspbian image.
2 Installing Lime Suite
After booting to the latest Raspbian image you can install LimeSuite by following the instructions on Getting Started with Lime Suite
3 Updating the Firmware and Gateware
The code running on the LimeSDR itself - known as "firmware" and "gateware" - needs to be kept up-to-date. Read LimeSDR Firmware Management to find out how to update these, and how to recover them if anything ever goes wrong.
4 Further reading
- LimeNET-Micro v2.1 hardware description
- Raspberry Pi documentation - Raspberry Pi documentation database
- LMS7002M (Mask 1) Transceiver Calibration - LMS7002Mr3 calibration guide, using internal MCU
- LimeSDR Made Simple - Demystifying using SDR in the real world and programming a simple example with confidence, through bite sized chunks (note that not all examples will work with the Mini, e.g. those using the waveform player)
- LMS7002M Datasheet (PDF) - LMS7002M RF transceiver datasheet
- LMS7002M Programming and Calibration Guide (PDF) - LMS7002M programming and calibration guide