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Enabled SPI for the TM4C129x #57

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@tcaxle tcaxle commented Mar 15, 2024

PR for #56

Code tested on the EK-TM4C1294XL with SSI0 on GPIO port A in SDIO mode.

Further testing recommended but basic functionality is confirmed.

Closes: #56

@tcaxle tcaxle mentioned this pull request Mar 15, 2024
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tcaxle commented Mar 15, 2024

See picoscope output for the Hello World example here:
image

impl<T> MisoPin<SSI3> for PQ3<AlternateFunction<AF14, T>> where T: OutputMode {}
impl<T> MosiPin<SSI3> for PQ2<AlternateFunction<AF14, T>> where T: OutputMode {}

// SSI3 (alt)
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Why are these commented out?

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Please run cargo fmt. One query but otherwise looks great, and fantastic to see the scope screenshot - very reassuring!

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SPI on the TM4C129x
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