Move the USBPhy header files into usb/device/USBPhy. Also move hal
and target USB files since mbed 2 does not compile when these files
are present without the USBPhy headers.
Directory restructure summary:
platform/USBPhy*
to usb/device/USBPhy/USBPhy*
hal/*
to usb/device/hal/*
targets/TARGET_Freescale/usb/*
to usb/device/targets/TARGET_Freescale/*
targets/TARGET_NXP/TARGET_LPC176X/usb/*
to usb/device/targets/TARGET_NXP/*
Update the USBCDC and USBSerial classes to the new API. This patch also
updates the blocking behavior to unblock at the appropriate times and
to let the processor sleep when blocking rather than busy waiting.
Add an allocation free linked list implementation. Additionally add
the class AsyncOp which provides blocking and wakeup funcionality
to simplify making asynchronous operations block.
Stalling endpoint 0 indicates the end of a control transfer.
Return immediately when this occurs rather than continuing processing.
In particular, this patch prevents status from erroneously being
sent when _request_setup returns false inside _complete_request.
Perform processing triggered by user callbacks when USB is being
unlocked rather than synchronously. This prevents recursive callbacks
which reduces stack usage. This also prevents state change inside
the user callback which makes the code easier to reason about.
Initialize the _transfer structure so the behavior is the same
regardless of prior memory contents. This fixes a hang during
USB testing when CI flags are used.
Remove the USBDevice function read_start and automatically start all
reads internally in USBDevice. This patch also renames the function
read_finish to read.
Russ Butler
Russ Butler