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Merge pull request #38 from ferrous-systems/skade-patch-5

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Fix unclarity in USB-3
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Lotte Steenbrink 2020-07-14 11:05:34 +02:00 committed by GitHub
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embedded-workshop-book/src/data-stage.md
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@ -8,7 +8,7 @@ The `Ep0In` API has two methods: `start` and `end` (also see their API documenta
To implement responding to a GET_DESCRIPTOR request, do the following:
1. **Extend the parser implementation to handle a GET_DESCRIPTOR request:** make the `common/usb/lib.rs::get_descriptor_configuration()` test run successfully.
1. **Extend the GET_DESCRIPTOR parser implementation to handle a CONFIGURATION request:** make the `common/usb/lib.rs::get_descriptor_configuration()` test run successfully.
2. **Answer the Descriptor Request:** extend `usb-3.rs` so that it uses `Ep0In` to respond to the `GET_DESCRIPTOR Device` request (and only to that request). The response must be a device descriptor with its fields set to these values:
- `bDeviceClass = bDeviceSubClass = bDeviceProtocol = 0`, these are unimportant for enumeration