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Home > The Amp Hour Electronics Podcast > #395 – An Interview with Luke Valenty


	Podcast:		The Amp Hour Electronics Podcast
	Episode:		#395 – An Interview with Luke Valenty
	Category:		Science & Medicine
	Duration:		01:36:36
	Publish Date:		2018-06-03 21:12:32
	Description:		Luke just got back from Maker Faire Bay Area 0h 0m 48s Arduino FPGA board 0h 1m 4s Want lots of serial ports 0h 2m 59s Porting sketches from one micro to another 0h 6m 30s FPGAwars 0h 9m 41s Remake of Pong 0h 10m 35s Need tools for things to be simpler 0h 11m 22s Tim Mithro Ansell 0h 11m 43s Clifford Wolf who started project ICEstorm 0h 11m 51s FPGAwars hashtag 0h 13m 0s APio for building FPGAs 0h 13m 13s Obijuan Academy 0h 13m 54s Learning Verilog 0h 14m 44s Data pipeline vs State machines and control 0h 16m 24s Similar to an “if” statement on a micro 0h 16m 51s Faster to write imperative code 0h 17m 14s Serial port example 0h 18m 3s Low power FPGA collects data, wakes up the micro and then transmits 0h 19m 24s “You’re not writing code any more, you’re describing hardware” 0h 22m 6s Wants to be able to take code and then sythesis in logic 0h 23m 43s Why is FPGA needed in a world of cheap micros 0h 26m 58s Amazing $1 microcontroller 0h 27m 27s When should people switch to an FPGA Customized peripherals Being sure of the hardware that’s going into micr FGPAs have room for change in the future (Especially if you think the protocol will change in the future) 0h 29m 54s Chris has experienced this with a video recorder that sells digital upgrades. 0h 33m 1s Also useful in test jigs to emulate hardware 0h 33m 6s Explaining the hardware 0h 35m 40s A series is 1.2×0.7 0h 36m 32s Same size as Teensy 0h 36m 59s Doesn’t have the end pins like the Teensy 0h 39m 0s Buy the boards on Tindie 0h 39m 44s Difference between a and b series 0h 40m 57s Bugblat tif 0h 41m 7s Learned surface mount soldering 0h 44m 11s Can find purchaseable boards and more on TinyFPGA.com 0h 45m 54s Lattice Mach XO2 CPLD replacement 0h 46m 31s No DSP blocks 0h 46m 39s Might be able to fit a micro in A2 0h 47m 23s A2 has a hard SPI block 0h 47m 52s Put store up on tindie for A1 0h 48m 58s Digilent clint cole 0h 49m 35s Having a board on the shelf could help for projects/hackathons/when in a bind 0h 51m 22s There used to be a B2 0h 52m 50s USB connector is SMT 0h 53m 57s BX board is 4 layer with BGA ICE40 81 ball 0.4 pitch 0h 54m 49s Package is meant to be used in a high density interconnect 0h 55m 41s B2 pins are mostly IO 0h 56m 34s Leaves some pins tri-stated and breaks out the deep hard IP blocks 0h 57m 22s Using PCBway with 4/4 process, via is 0.2 mm 0h 59m 49s Wanted more IO for the Bx boards 1h 1m 16s Squished pads narrower and elongated them 1h 1m 26s Everything is on github 1h 1m 53s Choose your side t-shirt 1h 3m 23s Re-using pins like the SPI flash 1h 5m 4s Once config is complete, the SPI is handed over to the user design 1h 6m 12s Recommends moving to a larger package 1h 7m 30s Decided not to do castellation 1h 9m 12s B series guide 1h 9m 54s BX has a different pin constraint file 1h 10m 46s Recommends using APio on commandline 1h 11m 9s IDE using Atom with APio plugin 1h 11m 18s Using IceCube2 toolchain 1h 12m 4s APio supports mostly pin constraints 1h 15m 17s Symbiflow is the next gen of opensource tools 1h 16m 0s FPGA_dave 1h 16m 56s ECP5 will be the next FPGA 1h 17m 32s Wants to use SERDES 1h 17m 47s Targeting crowdfunding campaign in fall 1h 20m 1s Currently have to preorder the BX, due in July 1h 20m 13s B series has an USB in the FPGA fabric 1h 22m 20s Gets enumerated as a serial port 1h 23m 6s Users can pull in the USB device to their projects 1h 25m 0s Can store metadata in the spi flash that talks to the programmer 1h 25m 38s Like a map file + UID 1h 26m 1s Dave Vandenbout XESS 1h 27m 35s Professor in Egypt doing FPGA online compiler 1h 29m 36s SDR radio people 1h 31m 6s Hackaday Supercoference 1h 33m 14s Ordered 1250 boards, 600 ordered 1h 36m 14s TinyFPGA on Twitter, GitHub, Tindie. Luke is on Hackaday as lukevalenty 1h 36m 30s
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