https://github.com/jonnor/galearn

https://github.com/jonnor/galearn

Last synced: 8 months ago
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• Host: GitHub
• URL: https://github.com/jonnor/galearn
• Owner: jonnor
• Created: 2025-04-17T20:08:00.000Z (9 months ago)
• Default Branch: master
• Last Pushed: 2025-05-02T19:11:29.000Z (8 months ago)
• Last Synced: 2025-05-11T08:02:20.644Z (8 months ago)
• Language: Verilog
• Size: 38.1 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README

Awesome Lists containing this project

README

          
Gate Array Learn

	apt install yosys fpga-icestorm nextpnr-ice40 verilator flashrom

	make

	doas make load

Raspberry Pi UART

	Enable serial communication in raspi-config.

UART

	stty -F /dev/ttyUSB1 1000000 raw cs8

	hexdump -ve '1/1 "%u\n"' /dev/ttyUSB1 | pv > pcm.txt

	pv /dev/ttyUSB1 > pcm.raw

	hexdump -ve '1/1 "%u\n"' pcm.raw > pcm.txt

	play -r 48k -e unsigned-integer -b 8 -c 1 pcm.raw

References

	Adafruit PDM Microphone Breakout

		https://learn.adafruit.com/adafruit-pdm-microphone-breakout/

	Pulse Density Modulation

		https://curiouser.cheshireeng.com/2015/01/21/pdm-in-attiny85-source-code/

		https://en.wikipedia.org/wiki/Pulse-code_modulation

		https://tomverbeure.github.io/2020/10/04/PDM-Microphones-and-Sigma-Delta-Conversion.html

		https://tomverbeure.github.io/2020/12/20/Design-of-a-Multi-Stage-PDM-to-PCM-Decimation-Pipeline.html

	Verilog by Example (Blaine C. Raedler 2021)

		http://readler.com/books2.html