[gnoduino: 232/237] Making head and tail unsigned to avoid division in serial ISR.
- From: Lucian Langa <lucilanga src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnoduino: 232/237] Making head and tail unsigned to avoid division in serial ISR.
- Date: Sat, 31 Mar 2012 20:34:20 +0000 (UTC)
commit a18e04c642b91cea30862b51538370765dbc3fab
Author: David A. Mellis <d mellis arduino cc>
Date: Fri Feb 3 17:24:29 2012 -0500
Making head and tail unsigned to avoid division in serial ISR.
http://code.google.com/p/arduino/issues/detail?id=776
arduino/cores/arduino/HardwareSerial.cpp | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/arduino/cores/arduino/HardwareSerial.cpp b/arduino/cores/arduino/HardwareSerial.cpp
index 1b1fa71..9985b78 100644
--- a/arduino/cores/arduino/HardwareSerial.cpp
+++ b/arduino/cores/arduino/HardwareSerial.cpp
@@ -46,8 +46,8 @@
struct ring_buffer
{
unsigned char buffer[SERIAL_BUFFER_SIZE];
- volatile int head;
- volatile int tail;
+ volatile unsigned int head;
+ volatile unsigned int tail;
};
#if defined(USBCON)
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