smallish ice40 / raspberrypi 超声硬件_Jupyter_python_代码_相关文件_下载

    [](https://www.patreon.com/kelu124) [](https://ko-fi.com/G2G81MT0G) [](https://join.slack.com/t/usdevkit/shared_invite/zt-2g501obl-z53YHyGOOMZjeCXuXzjZow) [](http://commonmark.org)  # un0rick ## Overview This is a relatively simple single-channel ultrasound board. Block diagram below:  ## Step-by-step 1. Program the fpga using a open-source toolchain to synthetise the embedded firmware. 2. Control the board fully through SPI, be it [through USB](http://un0rick.cc/un0rick/usb-setup), a [Raspberry Pi](http://un0rick.cc/un0rick/rpi-setup), or even an [arduino](http://un0rick.cc/un0rick/m5stack) (though a cheap one may not have sufficient resources to do what you want do to). 3. Set up the acquisition sequence 4. Get the data back again 5. Process / visualize the acquistion I recommend using RPi, particularly W for the wireless aspects, which then becomes the board server. There's a dedicated 20x2 header. Prepared is a [python lib](https://github.com/kelu124/un0rick/tree/master/pyUn0) as well. The v1.0.0 version is RPi4 proofed. ## Two control options: usb or raspberry * [Tutorial : Controlling it with a GPIO ribbon](http://un0rick.cc/un0rick/rpi-setup) * [Tutorial : Controlling it with usb](http://un0rick.cc/un0rick/usb-setup) ## Examples * __With a Raspberry pi__ The board was connected to a single element piezo, in water, with a reflector a few centimers away, immersed in water. Pulser is set up at 25V high pulses. Control was done through a Raspberry Pi W which is used as a controler and server, another Rasbperry pi.  Acquisition is realized, with a small offset, between 32Msps and 64Msps. Data is explored a bit further.  * __With a M5Stack (or any microcontroller really)__ The board was also tested with a nice [m5stack board](http://un0rick.cc/UseCase/m5stack) ([ino file](https://github.com/kelu124/echomods/blob/4923d2af498ee07439468cc0e1ba58e79040f0c0/matty/m5stack/SPI.ino)). Below an example in image:  ## Specs (un0v1.1) 1. __FPGA__: Lattice iCE40HX4K - TQFP 144 Package 2. __Memory__: * 8 Mbit SRAM, 10ns, 512 k x 16, equivalent to 65 full lines of 120us at 64Msps or 840 lines of 120us at 10Msps, 8 bits. * 8 Mb SPI Flash for FPGA configuration 3. __Ultrasound processing__: * __VGA__: AD8331 controled by DAC * __Pulser__: MD1210 + TC6320 * __ADC__: 65Msps ADC10065 * __Data__ formatted over 2 bytes, with 10 bits / sample, 2 bits of line trackers, 4 bits of IOs (counters, ...) and 2 bits for tracking. 4. __Parameters__: Settings programable via USB or Raspberry Pi * Type of acquisition (one line / set of lines) * Number of lines * Length of lines acquisitions * Delay between acquisitions * Pulse width * Delay between pulse and beginning of acquisitions * 200us time-gain-compensation programmable (8 bits, from 0 to Max), every 5us 5. __Extensibility__: * 2 x Pmod connectors * SMA plug for transducers * RPi GPIO 6. __User Interfaces__: * 2 x PMOD for IOs * 4 x push button (with software noise debouncing) * Jumpers for high voltage selection * Jumpers for SPI selection 7. __Input Voltage__: * 5 V from RPi or USB * Uses 350mA-450mA at 5V (including RPi) 8. __Operating Voltage__: * FPGA and logics at at 3.3 V * High voltage at 25V, 50V, 75V 9. __Fully Open Source__: * Hardware: [github repository](https://github.com/kelu124/un0rick) * Software: [github repository](https://github.com/kelu124/un0rick) * Toolchain: [Project IceStorm](http://www.clifford.at/icestorm/) * Documentation: [gitbook](https://doc.un0rick.cc/) ## Latest sources * Hardware resources are on github: * [FPGA bin](https://github.com/kelu124/un0rick/tree/master/software) so far using Lattice's tools. A icestorm port is coming. * Files for [v1.1](https://github.com/kelu124/un0rick/tree/master/hardware/v1.1) and [v1.01](https://github.com/kelu124/un0rick/tree/master/hardware) are available - on [upverter too](https://tools.upverter.com/eda/#tool=schematic,designId=c59550d3e0dcf944). * FPGA files too: * Single SMA: [v1.01](https://github.com/kelu124/un0rick/raw/master/bins/v1.01.bin) * Two SMAs, large board: [v1.1](https://github.com/kelu124/un0rick/raw/master/bins/v1.1.bin) * [Python lib too](https://github.com/kelu124/un0rick/blob/master/pyUn0/pyUn0.py) ## Orders * The [board is available on Tindie](https://www.tindie.com/products/kelu124/un0rick-open-ice40-ultrasound-imaging-dev-board/) at around 489$. * Send me a mail at __orders@un0rick.cc__ ! * Or wait for the [Tindie shop](https://www.tindie.com/stores/kelu124/) # Others ## Changelog * lit3rick v1.4 * Using AD8332 for more gain * ADC: 12bits -> 10bits * [lit3rick](http://un0rick.cc/lit3rick) __v1.3__ * lighter board * 12bits ADC * up5k based * external HV modules * un0rick dual _v1.2 - to be done * Better HV generation * SPI muxing to update * Check USB too * PMOD-compliant headers * remove i2c header, but keep i2c to RPI (with PU) * un0rick dual - __v1.1__ * Double SMA to possibly separate TX and RX path (for dual elements transducers) * Still some issues with muxing * un0rick - __v1.01__ * Rewired SPI * Less MUXing * The "matty board" __v1__ * First ice40 board - compatible with iceprog =) * Only one in existence, had some SPI wiring issues * HV module footprint reversed ## Tip: reaching 128msps Playing with the trigger, it's possible to [interleave two signals](https://github.com/kelu124/echomods/blob/master/matty/20180814a/20180814a-Server.ipynb) and artificially double to acquisition speed, yielding clean images. [Source experiment](https://github.com/kelu124/echomods/tree/master/matty/20180814a) ### Overview  ### In detail It seems that the different series interleave quite nicely, even in the detail.  ## Useful links * __Come and chat__ : join the [Slack channel](https://join.slack.com/t/usdevkit/shared_invite/zt-2g501obl-z53YHyGOOMZjeCXuXzjZow) * The full [GitHub Repo](https://github.com/kelu124/un0rick) for the hx8k board. * [Hardware files](https://github.com/kelu124/un0rick/tree/master/hardware) * [Verilog for usb control](https://github.com/kelu124/un0rick/tree/master/usb) - with the [corresponding python module](https://pypi.org/project/un0usb/) * [A version of the lib](https://github.com/kelu124/un0rick/tree/master/pyUn0) - with the [corresponding python module](https://github.com/kelu124/pyUn0-lib) * The board's [Tindie shop](https://www.tindie.com/stores/kelu124/) * The project [Hackaday](https://hackaday.io/project/28375-un0rick-an-ice40-ultrasound-board) page * A [messy braindump](https://github.com/kelu124/echomods/) with all experiments, and a