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[FL-3348] Software SPI #3861

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@portasynthinca3 portasynthinca3 commented Aug 29, 2024

What's new

  • Software SPI library (master mode only)
  • SPI testing app (spi_test)

Verification

  • Connect a logic analyzer or an oscilloscope to pins PA7 (MOSI), PB3 (SCK) and PA4 (CS)
  • Bridge pins PA6 (MISO) and PA7 (MOSI) together
  • Launch the spi_test app
  • Select "Software TRX"
  • Verify that the signal looks good
  • Verify that the logs say sent 55 AA, received 55 AA

Waveforms

Hardware SPI:
hardspi

Software SPI (far away, CS transitions visible):
softspi_far

Software SPI (up close, no CS transitions visible):
softspi_close

Checklist (For Reviewer)

  • PR has description of feature/bug or link to Confluence/Jira task
  • Description contains actions to verify feature/bugfix
  • I've built this code, uploaded it to the device and verified feature/bugfix

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github-actions bot commented Aug 29, 2024

Compiled f7 firmware for commit b0573ef5:

@portasynthinca3 portasynthinca3 marked this pull request as ready for review August 29, 2024 14:20
lib/softio/softio_spi.h Show resolved Hide resolved
@skotopes skotopes marked this pull request as draft September 12, 2024 16:24
@portasynthinca3 portasynthinca3 marked this pull request as ready for review September 20, 2024 13:18
lib/softio/softio_spi.c Show resolved Hide resolved
@skotopes skotopes marked this pull request as draft October 14, 2024 13:57
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undraft when ready

@portasynthinca3 portasynthinca3 marked this pull request as ready for review October 14, 2024 16:06
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2 participants