Improve CDC read code

Read CDC data from USB FIFO on demand instead of in ISR.
Remove superfluous ring buffer.

Signed-off-by: Paul Brook <paul@nowt.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/cores/arduino/USBAPI.h b/cores/arduino/USBAPI.h
index 1c5ecf0..d506b58 100644
--- a/cores/arduino/USBAPI.h
+++ b/cores/arduino/USBAPI.h
@@ -28,14 +28,13 @@ extern USBDevice_ USBDevice;
 class Serial_ : public Stream
 {
 private:
-	ring_buffer *_cdc_rx_buffer;
+	int peek_buffer;
 public:
 	void begin(unsigned long);
 	void begin(unsigned long, uint8_t);
 	void end(void);
 
 	virtual int available(void);
-	virtual void accept(void);
 	virtual int peek(void);
 	virtual int read(void);
 	virtual void flush(void);