@japaricious I'm having a lot of difficulty getting "new" cortex-m-rtfm and blue-pill working together. I think you've changed a lot :(
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Patience. Stable versions and blog post should come out today.
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Blog looked interesting. I've cloned blue-pill and am trying the loopback example, but it keeps stopping in a bkpt in default handler.
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Is there a reasonably easy way to tell which interrupt got me there?

Jul 30, 2017 ยท 5:51 PM UTC

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It happens when I press a key, so I'm guessing the loopback example is getting the USART1 IRQ wrong?