Fixed PDI/TPI programming speed of ~250KHz in the AVRISP-MKII Clone project, instead...

[pub/USBasp.git] / LUFA / Drivers / Peripheral / Serial.h

diff --git a/LUFA/Drivers/Peripheral/Serial.h b/LUFA/Drivers/Peripheral/Serial.h
index 83bdbbf..2fca02b 100644 (file)
--- a/LUFA/Drivers/Peripheral/Serial.h
+++ b/LUFA/Drivers/Peripheral/Serial.h
@@ -1,21 +1,21 @@
 /*
              LUFA Library
      Copyright (C) Dean Camera, 2010.
 /*
              LUFA Library
      Copyright (C) Dean Camera, 2010.

-              
+

   dean [at] fourwalledcubicle [dot] com
   dean [at] fourwalledcubicle [dot] com

-      www.fourwalledcubicle.com
+           www.lufa-lib.org

 */
 
 /*
   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"
 


@@ -76,17 +76,6 @@
                         */
                        #define SERIAL_2X_UBBRVAL(baud) ((((F_CPU / 8) + (baud / 2)) / (baud)) - 1)
 
                         */
                        #define SERIAL_2X_UBBRVAL(baud) ((((F_CPU / 8) + (baud / 2)) / (baud)) - 1)
 

-               /* Pseudo-Function Macros: */
-                       #if defined(__DOXYGEN__)
-                               /** Indicates whether a character has been received through the USART.
-                                *
-                                *  \return Boolean true if a character has been received, false otherwise.
-                                */
-                               static inline bool Serial_IsCharReceived(void);
-                       #else
-                               #define Serial_IsCharReceived() ((UCSR1A & (1 << RXC1)) ? true : false)
-                       #endif
-

                /* Function Prototypes: */
                        /** Transmits a given string located in program space (FLASH) through the USART.
                         *
                /* Function Prototypes: */
                        /** Transmits a given string located in program space (FLASH) through the USART.
                         *


@@ -110,54 +99,69 @@
                        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.
+                        *
+                        *  \return Boolean true if a character has been received, false otherwise.
+                        */
+                       static inline bool Serial_IsCharReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
+                       static inline bool Serial_IsCharReceived(void)
+                       {
+                               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.
                         */

+                       static inline void Serial_TxByte(const char DataByte) ATTR_ALWAYS_INLINE;

                        static inline void Serial_TxByte(const char DataByte)
                        {
                                while (!(UCSR1A & (1 << UDRE1)));
                                UDR1 = DataByte;
                        }
 
                        static inline void Serial_TxByte(const char DataByte)
                        {
                                while (!(UCSR1A & (1 << UDRE1)));
                                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) ATTR_ALWAYS_INLINE;

                        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
 
 /** @} */

+