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--- hardware/arduino/cores/arduino/HardwareSerial.cpp.orig 2014-09-16 13:45:33 UTC
+++ hardware/arduino/cores/arduino/HardwareSerial.cpp
@@ -89,7 +89,7 @@ struct ring_buffer
inline void store_char(unsigned char c, ring_buffer *buffer)
{
- int i = (unsigned int)(buffer->head + 1) % SERIAL_BUFFER_SIZE;
+ unsigned int i = (unsigned int)(buffer->head + 1) % SERIAL_BUFFER_SIZE;
// if we should be storing the received character into the location
// just before the tail (meaning that the head would advance to the
@@ -124,14 +124,14 @@ inline void store_char(unsigned char c,
unsigned char c = UDR0;
store_char(c, &rx_buffer);
} else {
- unsigned char c = UDR0;
+ unsigned char c __attribute__((unused)) = UDR0;
};
#elif defined(UDR)
if (bit_is_clear(UCSRA, PE)) {
unsigned char c = UDR;
store_char(c, &rx_buffer);
} else {
- unsigned char c = UDR;
+ unsigned char c __attribute__((unused)) = UDR;
};
#else
#error UDR not defined
@@ -150,7 +150,7 @@ inline void store_char(unsigned char c,
unsigned char c = UDR1;
store_char(c, &rx_buffer1);
} else {
- unsigned char c = UDR1;
+ unsigned char c __attribute__((unused)) = UDR1;
};
}
#endif
@@ -165,7 +165,7 @@ inline void store_char(unsigned char c,
unsigned char c = UDR2;
store_char(c, &rx_buffer2);
} else {
- unsigned char c = UDR2;
+ unsigned char c __attribute__((unused)) = UDR2;
};
}
#endif
@@ -180,7 +180,7 @@ inline void store_char(unsigned char c,
unsigned char c = UDR3;
store_char(c, &rx_buffer3);
} else {
- unsigned char c = UDR3;
+ unsigned char c __attribute__((unused)) = UDR3;
};
}
#endif
@@ -365,7 +365,6 @@ try_again:
void HardwareSerial::begin(unsigned long baud, byte config)
{
uint16_t baud_setting;
- uint8_t current_config;
bool use_u2x = true;
#if F_CPU == 16000000UL
@@ -459,7 +458,7 @@ void HardwareSerial::flush()
size_t HardwareSerial::write(uint8_t c)
{
- int i = (_tx_buffer->head + 1) % SERIAL_BUFFER_SIZE;
+ unsigned int i = (_tx_buffer->head + 1) % SERIAL_BUFFER_SIZE;
// If the output buffer is full, there's nothing for it other than to
// wait for the interrupt handler to empty it a bit
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