* machine: add USBDevice.Attach and USBDevice.Detach
The USB device is attached to the bus automatically during startup,
before user code has a chance to finish its USB configuration (device
identifiers, extra HID interfaces, ...). Composite devices such as
keyboards may therefore be enumerated by the host with an incomplete
configuration.
Attach and Detach expose the soft-connect control (DP pull-up) so that
an application or library can detach in an init function, complete its
configuration, and attach again to let the host enumerate the finished
device. They can also be used to force re-enumeration without
replugging the cable.
Implemented for atsamd21, atsamd51, nrf52840, rp2040 and rp2350.
* machine: make USB Detach sticky on nrf52840
The USB IRQ handler re-enables the DP pull-up on every power-ready
event, silently undoing an earlier Detach. Guard the pull-up write with
a detached flag so the device stays off the bus until Attach is called.
* machine: add USB Attach and Detach to stm32 and esp32 targets
- stm32f4, stm32f7, stm32h7: implement Attach and Detach using the
DCTL soft-disconnect bit that Configure already toggles.
- esp32c3, esp32c6, esp32s3: add no-op stubs to keep user code
portable; the fixed-function USB Serial/JTAG controller has no
software-controlled soft-connect.
* machine: use Attach and Detach in USB Configure
Replace the direct soft-connect register writes in Configure with the
equivalent Attach and Detach calls on atsamd21, atsamd51, rp2040,
rp2350, stm32f4, stm32f7 and stm32h7.
Remap CDC and MSC endpoints to share physical endpoint numbers. This change separates IN/OUT directional states for RP2 endpoints to prevent cross-talk, ensures SAMD21 and SAMD51 endpoint configuration merging does not overwrite bidirectionally shared registers, implements missing SAMD endpoint stall and clear methods, and corrects SAMD interrupt loop bounds to iterate over physical endpoint numbers rather than dynamic configuration entries.
Remove the sendUSBPacket maxLen param because this greatly confused the compiler.
It also fixes a bug where the length provided to the hardware may not match the length of the packet.
sendUSBPacket now panics if the sent packet is too big.
I also fixed some of the string descriptor logic where we could create a packet without fully populating it.
RP2* systems might require some more work since they are implemented very differently?
I don't have any of those to test with yet, so maybe someone can deal with them in a seperate PR?
sago35
Konstantin Sharlaimov
Nia Waldvogel
Michael Smith
Michael Smith
Yurii Soldak
deadprogram