Oops - fix broken SPI driver due to missing bit inversion on a port mask.
[pub/USBasp.git] / LUFA / Drivers / Peripheral / Serial.h
index 4eb74b9..37722db 100644 (file)
@@ -1,7 +1,7 @@
 /*
              LUFA Library
      Copyright (C) Dean Camera, 2010.
 /*
              LUFA Library
      Copyright (C) Dean Camera, 2010.
-              
+
   dean [at] fourwalledcubicle [dot] com
       www.fourwalledcubicle.com
 */
   dean [at] fourwalledcubicle [dot] com
       www.fourwalledcubicle.com
 */
@@ -9,13 +9,13 @@
 /*
   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 
 /*
   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 
-  Permission to use, copy, modify, distribute, and sell this 
+  Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted
   software and its documentation for any purpose is hereby granted
-  without fee, provided that the above copyright notice appear in 
+  without fee, provided that the above copyright notice appear in
   all copies and that both that the copyright notice and this
   all copies and that both that the copyright notice and this
-  permission notice and warranty disclaimer appear in supporting 
-  documentation, and that the name of the author not be used in 
-  advertising or publicity pertaining to distribution of the 
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
   software without specific, written prior permission.
 
   The author disclaim all warranties with regard to this
   software without specific, written prior permission.
 
   The author disclaim all warranties with regard to this
@@ -33,7 +33,7 @@
  *
  *  Driver for the USART subsystem on supported USB AVRs.
  */
  *
  *  Driver for the USART subsystem on supported USB AVRs.
  */
+
 /** \ingroup Group_PeripheralDrivers
  *  @defgroup Group_Serial Serial USART Driver - LUFA/Drivers/Peripheral/Serial.h
  *
 /** \ingroup Group_PeripheralDrivers
  *  @defgroup Group_Serial Serial USART Driver - LUFA/Drivers/Peripheral/Serial.h
  *
@@ -47,7 +47,7 @@
  *
  *  @{
  */
  *
  *  @{
  */
+
 #ifndef __SERIAL_H__
 #define __SERIAL_H__
 
 #ifndef __SERIAL_H__
 #define __SERIAL_H__
 
@@ -55,7 +55,7 @@
                #include <avr/io.h>
                #include <avr/pgmspace.h>
                #include <stdbool.h>
                #include <avr/io.h>
                #include <avr/pgmspace.h>
                #include <stdbool.h>
-               
+
                #include "../../Common/Common.h"
                #include "../Misc/TerminalCodes.h"
 
                #include "../../Common/Common.h"
                #include "../Misc/TerminalCodes.h"
 
                        static inline void Serial_Init(const uint32_t BaudRate,
                                                       const bool DoubleSpeed)
                        {
                        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));
                                UCSR1A = (DoubleSpeed ? (1 << U2X1) : 0);
                                UCSR1B = ((1 << TXEN1)  | (1 << RXEN1));
-                               UCSR1C = ((1 << UCSZ11) | (1 << UCSZ10));
-                               
-                               DDRD  |= (1 << 3);      
+
+                               DDRD  |= (1 << 3);
                                PORTD |= (1 << 2);
                                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)
                        {
                        }
 
                        /** Turns off the USART driver, disabling and returning used hardware to their default configuration. */
                        static inline void Serial_ShutDown(void)
                        {
-                               UCSR1A = 0;
                                UCSR1B = 0;
                                UCSR1B = 0;
+                               UCSR1A = 0;
                                UCSR1C = 0;
                                UCSR1C = 0;
-                               
-                               DDRD  &= ~(1 << 3);     
-                               PORTD &= ~(1 << 2);
-                               
+
                                UBRR1  = 0;
                                UBRR1  = 0;
+
+                               DDRD  &= ~(1 << 3);
+                               PORTD &= ~(1 << 2);
                        }
 
                        /** Indicates whether a character has been received through the USART.
                        }
 
                        /** Indicates whether a character has been received through the USART.
                        {
                                return ((UCSR1A & (1 << RXC1)) ? true : false);
                        }
                        {
                                return ((UCSR1A & (1 << RXC1)) ? true : false);
                        }
-                       
+
                        /** Transmits a given byte through the USART.
                         *
                         *  \param[in] DataByte  Byte to transmit through the USART.
                        /** Transmits a given byte through the USART.
                         *
                         *  \param[in] DataByte  Byte to transmit through the USART.
                                UDR1 = DataByte;
                        }
 
                                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.
                         */
                         *
                         *  \return Byte received from the USART.
                         */
                        static inline char Serial_RxByte(void)
                        {
                                while (!(UCSR1A & (1 << RXC1)));
                        static inline char Serial_RxByte(void)
                        {
                                while (!(UCSR1A & (1 << RXC1)));
-                               return UDR1; 
+                               return UDR1;
                        }
 
        /* Disable C linkage for C++ Compilers: */
                #if defined(__cplusplus)
                        }
                #endif
                        }
 
        /* Disable C linkage for C++ Compilers: */
                #if defined(__cplusplus)
                        }
                #endif
-               
+
 #endif
 
 /** @} */
 #endif
 
 /** @} */
+