https://github.com/lupyuen/pi-swd-spi

Implementation of SWD protocol with Raspberry Pi Bidirectional SPI
https://github.com/lupyuen/pi-swd-spi

raspberry-pi spi swd

Last synced: 16 days ago
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Implementation of SWD protocol with Raspberry Pi Bidirectional SPI

• Host: GitHub
• URL: https://github.com/lupyuen/pi-swd-spi
• Owner: lupyuen
• Created: 2020-01-12T12:16:27.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2020-01-17T16:33:30.000Z (over 5 years ago)
• Last Synced: 2025-03-25T13:39:44.848Z (about 1 month ago)
• Topics: raspberry-pi, spi, swd
• Language: C
• Homepage:
• Size: 88.9 KB
• Stars: 15
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# pi-swd-spi

Implementation of SWD protocol with Raspberry Pi Bidirectional SPI

Why implement SWD over Bidirectional SPI on Raspberry Pi?  Because SWD over Bit-Banging GPIO has timing issues that affect OpenOCD flashing...

https://gist.github.com/lupyuen/18e66c3e81e11050a10d1192c5b84bb0

Based on SWD protocol from...

https://annals-csis.org/proceedings/2012/pliks/279.pdf