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In Part 3, we designed and implemented the hardware side of the project, using Vivado. After placing and connecting all the IP blocks, we synthesised, implemented and generated the bitstream for the Arty S7 board. A quick test gave us a good indication the build was good, so now that the system is ready, we need to write the software for our application, which will run on the MicroBlaze and use all the modules created in the FPGA.   As mentioned already in the previous part, the great thin ...
One day before the final day of the review on this DC/DC TPS54424/20 Converter and the parts arrived. As a summary of the day, it was a roaring success. I was unable to spend the time I wanted before the end of the review process but have managed to successfully replace the parts to obtain 5V. I cannot at this time finalise the test so I plugged it in to check some of the attributes.   Component Installation: One of the challenges I experienced was the component selection. I had a WEBENCH d ...
After exploring in Part 1 what we got with the Arty board, and in Part 2 what tools we are going to use, it is time to spring into action and build an Infra-Red thermal detector based on the Arty board. For the sensor, I’m going to use the Panasonic  AMG8833 Grid-Eye , more specifically I’m using the Maxim MAXREFDES131 board, which I had the chance to road test last year (1-Wire® Grid-EYE® Sensor w/Arduino-Compatible PCB - Review). This board supports both OneWire and ...
First of all I would like to thank the Element14 Roadtest team for giving me the opportunity to review the Spartan S7 development board.   Introduction   I got introduced to the Xilinx 7-series FPGAs back in 2013 and I’ve been wondering for a while why there is no Spartan 7. At certain point I thought that the 7-series marks the end of the Spartan family. Recently I was happy to find out that Spartan is far from over and now thanks to the Roadtest team I get to experience the ...
dubbie

BASYS3 RoadTest : SISC#1

Posted by dubbie Apr 9, 2018
I was excited to be chosen as one of the additional RoadTesters (Beep Beep - or is that the RoadRunner) for the Digilent BASYS3 FPGA Introduction PCB. I proposed to design and implement my own microprocessor based on the Reduced Instruction Set Computer (RISC) philosophy. This philosophy can be a bit confusing as most people would consider this to mean a smaller number of instructions, whereas the reality is that it means each instruction is simplified. One of the effects of this is that the tot ...
As already mentioned in The Digilent Arty S7: An Unexpected journey - Part 1 - The Board, the heart of the Arty S7 is the Spartan-7 FPGA. In this article, I will explore the tools available to work with the FPGA. As my focus is the Arty S7 board, it goes without saying that when I talk of FPGAs, the reference is to the Xilinx’s Spartan-7 (although many considerations might apply to FPGAs in general).   If you are approaching those devices for the first time, there is a nice short int ...
Resolving Errors In the previous main review post, feeling relaxed knowing that the bulk of the review had been completed, it was time to stand/sit back and seriously consider my errors in the review. It is no use criticising Texas Instruments as it is expected that the EVM board would have been tested to perform at the optimal point. So obviously the first thing to consider is anything that I would have done. For this next stage of the review process I will make comparisons to my past result ...
Part 2: Test the analog features of the TPSM84A21 EVM   To be Tested Features of TPSM84A21: Output voltage ripple measurements (with and without external capacitors) Tests at high output current with external load The Vin, Vout and PGOOD start up waveforms The Vin, Vout and PGOOD shutdown waveforms   Features of TPSM84A21 IC: Ultra-Fast Load Step Response Efficiencies up to 88% 1% Output Voltage Accuracy 4 MHz Switching Frequency Synchronizes to an External Clock Power ...
Part 2 : A quick overview of the devices used in the setup. And a short summary of the test setup   Devices used in the setup     Set of Digital Multimeters   2 sets of Power Supplies   Hakko Soldering Station   RIGOL Oscilloscope upgraded to 500MHz Bandwidth   Home-made cables and test boards for the Setup: I made some special cables to do 1x measurements with the oscilloscope. Special Cables   High Wattage Resistors for large current measuremen ...
Review Part 3: Dynamically adjust the output voltage using external DAC   This part of the review was done together with another community member dhmarinov   Aim: To dynamically adjust the Vout of the DC/DC converter by injecting small current in the feedback network via external DAC.   Setup: ZedBoard Zynq-7000 FPGA Development Board plugged in with the AMS101 plug in board using AD5065 DAC. The DAC output was fed to the VADJ pin via small RDAC resistance. The fpga control co ...
Recently, I have been selected to RoadTest the Digilent Arty S7 FPGA board. Since it has been ages since I last worked on digital design, and a lot has changed since then, this RoadTest offered me the opportunity to refresh and update my knowledge and I thought it would be nice to keep records of this journey into the discovery of this board and share it with the element14 community. I want to reassure you: there won't be Dragons, Orcs or any other strange creature met during the journey (sorry, ...

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