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RIOT/boards/common/samd21-arduino-bootloader
Benjamin Valentin 1d638bf017 boards/samd21-arduino-bootloader: increase preflash delay
The USB bootloader can take a while to be ready / Linux takes a while
to set up the interface.
1s is right at the edge, leading to races and often failed flashing.

Bump the delay to 2s for a wider safety margin, with this flashing is
a lot more reliable.
2021-02-09 16:13:23 +01:00
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