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-rw-r--r--cores/arduino/USBAPI.h14
1 files changed, 12 insertions, 2 deletions
diff --git a/cores/arduino/USBAPI.h b/cores/arduino/USBAPI.h
index 7a14285..da2e869 100644
--- a/cores/arduino/USBAPI.h
+++ b/cores/arduino/USBAPI.h
@@ -25,10 +25,16 @@ extern USBDevice_ USBDevice;
//================================================================================
// Serial over CDC (Serial1 is the physical port)
+struct ring_buffer;
+
+#if (RAMEND < 1000)
+#define SERIAL_BUFFER_SIZE 16
+#else
+#define SERIAL_BUFFER_SIZE 64
+#endif
+
class Serial_ : public Stream
{
-private:
- ring_buffer *_cdc_rx_buffer;
public:
void begin(unsigned long);
void begin(unsigned long, uint8_t);
@@ -42,6 +48,10 @@ public:
virtual size_t write(uint8_t);
using Print::write; // pull in write(str) and write(buf, size) from Print
operator bool();
+
+ volatile uint8_t _rx_buffer_head;
+ volatile uint8_t _rx_buffer_tail;
+ unsigned char _rx_buffer[SERIAL_BUFFER_SIZE];
};
extern Serial_ Serial;