2 files changed, 50 insertions, 0 deletions
diff --git a/cores/arduino/CDC.cpp b/cores/arduino/CDC.cpp
index d694a2d..90a1698 100644
--- a/cores/arduino/CDC.cpp
+++ b/cores/arduino/CDC.cpp
@@ -18,6 +18,7 @@
 
 #include "USBAPI.h"
 #include <avr/wdt.h>
+#include <util/atomic.h>
 
 #if defined(USBCON)
 
@@ -205,6 +206,32 @@ Serial_::operator bool() {
 	return result;
 }
 
+unsigned long Serial_::baud() {
+	ATOMIC_BLOCK(ATOMIC_RESTORESTATE) {
+		return _usbLineInfo.dwDTERate;
+	}
+}
+
+uint8_t Serial_::stopbits() {
+	return _usbLineInfo.bCharFormat;
+}
+
+uint8_t Serial_::paritytype() {
+	return _usbLineInfo.bParityType;
+}
+
+uint8_t Serial_::numbits() {
+	return _usbLineInfo.bDataBits;
+}
+
+bool Serial_::dtr() {
+	return _usbLineInfo.lineState & 0x1;
+}
+
+bool Serial_::rts() {
+	return _usbLineInfo.lineState & 0x2;
+}
+
 Serial_ Serial;
 
 #endif /* if defined(USBCON) */
diff --git a/cores/arduino/USBAPI.h b/cores/arduino/USBAPI.h
index 4abd961..ada73b0 100644
--- a/cores/arduino/USBAPI.h
+++ b/cores/arduino/USBAPI.h
@@ -101,6 +101,29 @@ public:
 	volatile uint8_t _rx_buffer_head;
 	volatile uint8_t _rx_buffer_tail;
 	unsigned char _rx_buffer[SERIAL_BUFFER_SIZE];
+
+	// These return the settings specified by the USB host for the
+	// serial port. These aren't really used, but are offered here
+	// in case a sketch wants to act on these settings.
+	uint32_t baud();
+	uint8_t stopbits();
+	uint8_t paritytype();
+	uint8_t numbits();
+	bool dtr();
+	bool rts();
+	enum {
+		ONE_STOP_BIT = 0,
+		ONE_AND_HALF_STOP_BIT = 1,
+		TWO_STOP_BITS = 2,
+	};
+	enum {
+		NO_PARITY = 0,
+		ODD_PARITY = 1,
+		EVEN_PARITY = 2,
+		MARK_PARITY = 3,
+		SPACE_PARITY = 4,
+	};
+
 };
 extern Serial_ Serial;