From e4f7bf513d366d4e47fe969057ab6ae72aca8168 Mon Sep 17 00:00:00 2001
From: Sandeep Mistry <s.mistry@arduino.cc>
Date: Tue, 23 Feb 2016 09:36:34 -0500
Subject: [PATCH] Add private availableForStore method, and use in
Serial_::accept
---
cores/arduino/USB/CDC.cpp | 11 +++++++++++
cores/arduino/USB/USBAPI.h | 2 ++
2 files changed, 13 insertions(+)
diff --git a/cores/arduino/USB/CDC.cpp b/cores/arduino/USB/CDC.cpp
index 9c38debb..adb3ab07 100644
--- a/cores/arduino/USB/CDC.cpp
+++ b/cores/arduino/USB/CDC.cpp
@@ -351,6 +351,17 @@ bool Serial_::rts() {
return _usbLineInfo.lineState & 0x2;
}
+int Serial_::availableForStore(void) {
+ ring_buffer *buffer = &cdc_rx_buffer;
+
+ if (buffer->full)
+ return 0;
+ else if (buffer->head >= buffer->tail)
+ return CDC_SERIAL_BUFFER_SIZE - 1 - buffer->head + buffer->tail;
+ else
+ return buffer->tail - buffer->head - 1;
+}
+
Serial_ SerialUSB(USBDevice);
#endif
diff --git a/cores/arduino/USB/USBAPI.h b/cores/arduino/USB/USBAPI.h
index 716edbfd..8573248d 100644
--- a/cores/arduino/USB/USBAPI.h
+++ b/cores/arduino/USB/USBAPI.h
@@ -168,6 +168,8 @@ public:
};
private:
+ int availableForStore(void);
+
USBDeviceClass &usb;
RingBuffer *_cdc_rx_buffer;
};
--
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