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Is your feature request related to a problem? Please describe.
the following code causes undefined reference to 'Adafruit_USBD_CDC::available()' when targeting the nRF52840 boards.
I understand that the header "Adafruit_TinyUSB.h" needs to be included, but I don't want to include it for power saving.
void setup() {
Serial1.begin(115200);
}
void loop() {
}
This is because serialEventRun refers to Serial.
How about changing the call to Serial.available to a call to the weak symbol?
int Serial_available() __attribute__((weak));
void serialEventRun(void)
{
if (serialEvent && Serial_available() ) serialEvent();
}