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Making head and tail unsigned to avoid division in serial ISR. 

http://code.google.com/p/arduino/issues/detail?id=776
This commit is contained in:
David A. Mellis 2012-02-03 17:24:29 -05:00
parent dd5bae59df
commit e1438efb3a
1 changed files with 2 additions and 2 deletions
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4
cores/arduino/HardwareSerial.cpp
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@ -46,8 +46,8 @@
struct ring_buffer struct ring_buffer
{ {
unsigned char buffer[SERIAL_BUFFER_SIZE]; unsigned char buffer[SERIAL_BUFFER_SIZE];
volatile int head; volatile unsigned int head;
volatile int tail; volatile unsigned int tail;
}; };
#if defined(USBCON) #if defined(USBCON)