123 lines
4.0 KiB
Markdown
123 lines
4.0 KiB
Markdown
# Pluto+
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The repo maintain the firmware of Pluto+. Pluto+ is a software-defined radio platform that supports 2TX 2RX, supports Gigabit Ethernet and Micro SD card. The design inherited from the well-known ADI ADALM-PLUTO with several improvements.
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[TOC]
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## Specification
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| Feature | Details |
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| ----------- | ------------------------------------------------------------ |
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| SOC | Zynq7zc010 with 28k LUTs |
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| ADC/DAC | AD9363(Can hack to AD9361 or AD9364) with 2 Transmit, 2 Receive channel |
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| RF Range | 70MHZ~6GHZ |
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| Ref Clock | VCTCXO 40MHZ 0.5ppm, with external clock input |
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| RAM | 512MB |
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| FLASH | 32MB, SD Card |
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| Connections | USB：2.0 support OTG |
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| | Ethernet：1Gb |
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| DC IN | 5V +-0.5V-2A microUSB |
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### Schematics
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Pluto+ has full schematics open sourced. You can find this in sch folder.
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## How to upgrade the firmware
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### UDisk Upgrade
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1. You can download the latest firmware from here
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2. Unzip the files
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3. Put *.frm files into the storage disk named "PlutoSDR"
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### DFU Upgrade
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If you device is not responding anymore, you have to apply DFU procedure to unbrick it.
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1. Download the firmware and unzip it.
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2. Install dfu utility
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5. Make Device enter DFU mode. There is a howto section below on the details steps.
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4. Run DFU utility with the following command:
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```
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dfu-tool -a 0 -write boot.dfu
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dfu-tool -a 1 -write pluto.dfu
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```
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## How to build firmware manually
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1. Clone this repo
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2. Download the source code via 'git submodule update --init'
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3. Apply the diff to each subfolder
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```
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cd plutosdr-fw
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git apply ../patches/fw.diff
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cd hdl
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git apply ../../hdl.diff
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cd ..
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cd linux
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git apply ../../linux.diff
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cd ..
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cd u-boot-xlnx
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git apply ../../u-boot-xlnx.diff
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cd ..
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```
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4. Build the code via 'make' in plutosdr-fw folder
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In case you hit the error, please search the internet on PlutoSDR firmware build. It is identical.
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## Jumpers and Pinouts
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There is description on PCB on the jumpers.
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*Please note that all IO levels are 1.8V.*
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1. When using the official ADI-PlutoSDR firmware, please connect to URST-MI052.
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2. When using Pluto+ firmware and need to support Ethernet, please connect URST-MIO46
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3. When using SD card to boot, please connect SD-H to 1V8
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4. When using JTAG to debug, please connect JTAG# to GND
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5. Please connect EXCLK to GND when using external reference clock input
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## HowTo
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### How to connect PTT
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PTT drives optocouplers through GPIO0 (MI00), which requires an external relay or control circuit.
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### How to Enter DFU
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1. Remove the screws and open up the device.
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2. Short URST with MIO52, see the Jumper images for details.
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3. Press DFU while power the device
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### How to have a external reference clock
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You can connect a cable to input an external high-precision reference clock for AD9363 through the IPEX interface.
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The main level should not exceed **3.3V**, and the EXCLK jumper needs to be connected to GND to turn off the built-in clock. (Check Jumper image for details)
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### How to Calibrate the OSC
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The frequency of the 40M clock can be fine-tuned by adjusting the adjustable resistor next to the VCTCXO. You need to have a reference signal source and frequency meter when adjusting.
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### How to boot from SD Card
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Connect SD-H jumper to 1V8. Check Jumper image for details. We don't have SD image yet. And we will support it later. |