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Add USBDevice.isSuspended()

Based on code originally by Rob van der Veer <rob.c.veer@gmail.com>, this adds USBDevice.isSuspended(), so user sketches can run custom code in their `loop` methods after checking if the device is suspended or not. Signed-off-by: Gergely Nagy <algernon@keyboard.io>

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cores/arduino
- USBAPI.h
- USBCore.cpp

2 files changed

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`‎cores/arduino/USBAPI.h‎`

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Original file line number	Diff line number	Diff line change
`@@ -65,6 +65,8 @@ class USBDevice_`
`65`	`65`	`void detach(); // Serial port goes down too...`
`66`	`66`	`void poll();`
`67`	`67`	`bool wakeupHost(); // returns false, when wakeup cannot be processed`
	`68`	`+`
	`69`	`+ bool isSuspended();`
`68`	`70`	`};`
`69`	`71`	`extern USBDevice_ USBDevice;`
`70`	`72`

`‎cores/arduino/USBCore.cpp‎`

Lines changed: 6 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -855,4 +855,10 @@ bool USBDevice_::wakeupHost()`
`855`	`855`	`return false;`
`856`	`856`	`}`
`857`	`857`
	`858`	`+bool USBDevice_::isSuspended()`
	`859`	`+{`
	`860`	`+ return (_usbSuspendState & (1 << SUSPI));`
	`861`	`+}`
	`862`	`+`
	`863`	`+`
`858`	`864`	`#endif /* if defined(USBCON) */`

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Commit c87bc7b

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2 files changed

2 files changed

`‎cores/arduino/USBAPI.h‎`

`‎cores/arduino/USBCore.cpp‎`

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