25 lines
1 KiB
Markdown
25 lines
1 KiB
Markdown
SPI master mode tests
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While some of the disco boards have some form of spi device onboard,
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which would, on the face of it, make testing easy, it's a different
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device on each board, and there are boards without it.
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Instead, use a known SPI peripheral on all boards, and require/expect
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a known fixed SPI slave device. Use a soft controller SPI slave device
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for the far side, for double the test coverage!
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the "trigger" pin is bounced when each iteration of the test code starts,
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allowing synchronization with a sigrok script that helps assure that
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results are as expected.
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Debug is via SWO wherever possible, PA2 (tx only) on less capable cores
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Pinouts:
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(red) (orange) (yellow)(brown) (black)
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board CLK MISO MOSI CS periph trigger
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f4-disco PB13 PB14 PB15 PB12 spi2 PB11
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l1-disco PB13 PB14 PB15 PB12 spi2 PB11
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Notes for monitoring with sigrok:
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$ sigrok-cli -d fx2lafw -C D0=TRIG,D1=CS,D2=CLK,D3=MISO,D4=MOSI -c samplerate=12Mhz:captureratio=4 --time=150ms -t TRIG=r -P spi:clk=CLK:miso=MISO:mosi=MOSI -A spi=mosi-data
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