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re review. point to usb spec for wvalue etc

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This commit is contained in:
Lotte Steenbrink 2020-07-03 14:49:54 +02:00
parent 4bd350c948
commit f2cc43b55f
1 changed files with 3 additions and 1 deletions
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4
advanced/common/usb/src/lib.rs
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@ -65,7 +65,9 @@ impl Request {
if bmrequesttype == 0b00000000 && brequest == SET_ADDRESS {
// Set the device address for all future accesses.
// Needed to successfully init when using Apple devices.
// (Needed to successfully init when conected to Apple devices)
// Section 9.4.6 Set Address of the USB specification explains which values for wvalue,
// windex and wlength are valid.
if wvalue < 128 && windex == 0 && wlength == 0 {
Ok(Request::SetAddress {
address: NonZeroU8::new(wvalue as u8),