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MSO58: SPI bus decode

MSO54, MSO56, MSO58
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Doraemon
Posts: 1
Joined: January 18th, 2019, 5:46 pm
Country: Japan

MSO58: SPI bus decode

Post by Doraemon » January 18th, 2019, 5:53 pm

Hello!
I'm using an MSO 58, and I don't know if I'm missing something, but doing something as basic as decoding a SPI bus
involves setting up 3 buses. 1 for CLK + MOSI, 1 for CLK + MISO, and one for CS. If I want to view both bus and signals,
I will end up with 2 clocks. If I want to trigger by idle time, yet having a CS displayed, then I need the 3rd bus mentioned
above. Is there a simpler way to do that?

I would expect that SPI is setup with a single bus, showing the 4 standard signals as it is the case on earlier scopes.
Is there a technical reason to split SPI in 2 separated buses?

Thanks,
Dora.

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