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-rw-r--r--LUFA/Drivers/Peripheral/Serial.h20
1 files changed, 11 insertions, 9 deletions
diff --git a/LUFA/Drivers/Peripheral/Serial.h b/LUFA/Drivers/Peripheral/Serial.h
index 4eb74b9d2..47f65ea7b 100644
--- a/LUFA/Drivers/Peripheral/Serial.h
+++ b/LUFA/Drivers/Peripheral/Serial.h
@@ -99,27 +99,27 @@
static inline void Serial_Init(const uint32_t BaudRate,
const bool DoubleSpeed)
{
+ UBRR1 = (DoubleSpeed ? SERIAL_2X_UBBRVAL(BaudRate) : SERIAL_UBBRVAL(BaudRate));
+
+ UCSR1C = ((1 << UCSZ11) | (1 << UCSZ10));
UCSR1A = (DoubleSpeed ? (1 << U2X1) : 0);
UCSR1B = ((1 << TXEN1) | (1 << RXEN1));
- UCSR1C = ((1 << UCSZ11) | (1 << UCSZ10));
- DDRD |= (1 << 3);
+ DDRD |= (1 << 3);
PORTD |= (1 << 2);
-
- UBRR1 = (DoubleSpeed ? SERIAL_2X_UBBRVAL(BaudRate) : SERIAL_UBBRVAL(BaudRate));
}
/** Turns off the USART driver, disabling and returning used hardware to their default configuration. */
static inline void Serial_ShutDown(void)
{
- UCSR1A = 0;
UCSR1B = 0;
+ UCSR1A = 0;
UCSR1C = 0;
+
+ UBRR1 = 0;
- DDRD &= ~(1 << 3);
+ DDRD &= ~(1 << 3);
PORTD &= ~(1 << 2);
-
- UBRR1 = 0;
}
/** Indicates whether a character has been received through the USART.
@@ -143,7 +143,9 @@
UDR1 = DataByte;
}
- /** Receives a byte from the USART.
+ /** Receives a byte from the USART. This function blocks until a byte has been
+ * received; if non-blocking behaviour is required, test for a received character
+ * beforehand with \ref Serial_IsCharReceived().
*
* \return Byte received from the USART.
*/