Compiler defines USBCON for USB devices (PR#2433)
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@ -64,7 +64,7 @@
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#define BYTE 0
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#ifndef AT90USB
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#ifndef USBCON
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// Define constants and variables for buffering incoming serial data. We're
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// using a ring buffer (I think), in which rx_buffer_head is the index of the
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// location to which to write the next incoming character and rx_buffer_tail
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@ -150,10 +150,10 @@ class MarlinSerial { //: public Stream
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};
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extern MarlinSerial MSerial;
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#endif // !AT90USB
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#endif // !USBCON
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// Use the UART for BT in AT90USB configurations
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#if defined(AT90USB) && defined(BTENABLED)
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#if defined(USBCON) && defined(BTENABLED)
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extern HardwareSerial bt;
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#endif
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