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Teensy 3.5: do not restart USB stack after wakeup #19269

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Dec 9, 2022
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Teensy 3.5: do not restart USB stack after wakeup #19269

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11 changes: 11 additions & 0 deletions platforms/chibios/boards/PJRC_TEENSY_3_5/board/board.mk
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Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
include $(CHIBIOS_CONTRIB)/os/hal/boards/PJRC_TEENSY_3_5/board.mk

# List of all the board related files.
BOARDSRC += $(BOARD_PATH)/board/extra.c

# Required include directories
BOARDINC += $(BOARD_PATH)/board

# Shared variables
ALLCSRC += $(BOARDSRC)
ALLINC += $(BOARDINC)
7 changes: 7 additions & 0 deletions platforms/chibios/boards/PJRC_TEENSY_3_5/board/extra.c
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Original file line number Diff line number Diff line change
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#include <hal.h>

void restart_usb_driver(USBDriver *usbp) {
// Do nothing. Restarting the USB driver on the Teensy 3.6 breaks it,
// resulting in a keyboard which can wake up a PC from Suspend-to-RAM, but
// does not actually produce any keypresses until you un-plug and re-plug.
}