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1 parent 470cbed commit 1ded874Copy full SHA for 1ded874
cores/esp32/USB.cpp
@@ -29,7 +29,7 @@
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#define USB_PRODUCT ARDUINO_BOARD
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#endif
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#ifndef USB_SERIAL
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-#define USB_SERIAL ""
+#define USB_SERIAL "0"
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extern "C" {
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