X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/43b9d552bb0a32c5cd5f9fa72a8cb3c871ad5ef3..64d00efd915b8c3842c4fe93605bf8bc73def030:/LUFA/Drivers/Peripheral/Serial.h diff --git a/LUFA/Drivers/Peripheral/Serial.h b/LUFA/Drivers/Peripheral/Serial.h index e7c2fa065..e0a774747 100644 --- a/LUFA/Drivers/Peripheral/Serial.h +++ b/LUFA/Drivers/Peripheral/Serial.h @@ -1,13 +1,13 @@ /* LUFA Library - Copyright (C) Dean Camera, 2011. + Copyright (C) Dean Camera, 2012. dean [at] fourwalledcubicle [dot] com www.lufa-lib.org */ /* - Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com) + Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com) Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted @@ -29,220 +29,48 @@ */ /** \file - * \brief Master include file for the USART peripheral driver. + * \brief Hardware Serial USART driver. * - * Driver for the USART subsystem on supported USB AVRs. + * This file is the master dispatch header file for the device-specific USART driver, for microcontrollers + * containing a hardware USART. + * + * User code should include this file, which will in turn include the correct ADC driver header file for the + * currently selected architecture and microcontroller model. */ /** \ingroup Group_PeripheralDrivers - * @defgroup Group_Serial Serial USART Driver - LUFA/Drivers/Peripheral/Serial.h + * \defgroup Group_Serial Serial USART Driver - LUFA/Drivers/Peripheral/Serial.h + * \brief Hardware Serial USART driver. * * \section Sec_Dependencies Module Source Dependencies * The following files must be built with any user project that uses this module: - * - LUFA/Drivers/Peripheral/Serial.c (Makefile source module name: LUFA_SRC_SERIAL) + * - LUFA/Drivers/Peripheral/ARCH/Serial_ARCH.c (Makefile source module name: LUFA_SRC_SERIAL) * * \section Sec_ModDescription Module Description - * Hardware serial USART driver. This module provides an easy to use driver for - * the setup of and transfer of data over the AVR's USART port. - * - * \section Sec_ExampleUsage Example Usage - * The following snippet is an example of how this module may be used within a typical - * application. - * - * \code - * // Initialise the serial USART driver before first use, with 9600 baud (and no double-speed mode) - * Serial_Init(9600, false); - * - * // Send a string through the USART - * Serial_TxString("Test String\r\n"); + * Hardware serial USART driver. This module provides an easy to use driver for the setup and transfer + * of data over the selected architecture and microcontroller model's USART port. * - * // Receive a byte through the USART - * uint8_t DataByte = Serial_RxByte(); - * \endcode - * - * @{ + * \note The exact API for this driver may vary depending on the target used - see + * individual target module documentation for the API specific to your target processor. */ #ifndef __SERIAL_H__ #define __SERIAL_H__ - /* Includes: */ - #include - #include - #include - #include + /* Macros: */ + #define __INCLUDE_FROM_SERIAL_H + /* Includes: */ #include "../../Common/Common.h" - #include "../Misc/TerminalCodes.h" - - /* Enable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - extern "C" { - #endif - - /* Private Interface - For use in library only: */ - #if !defined(__DOXYGEN__) - /* External Variables: */ - extern FILE USARTSerialStream; - - /* Function Prototypes: */ - int Serial_putchar(char DataByte, - FILE *Stream); - int Serial_getchar(FILE *Stream); - int Serial_getchar_Blocking(FILE *Stream); - #endif - - /* Public Interface - May be used in end-application: */ - /* Macros: */ - /** Macro for calculating the baud value from a given baud rate when the U2X (double speed) bit is - * not set. - */ - #define SERIAL_UBBRVAL(baud) ((((F_CPU / 16) + (baud / 2)) / (baud)) - 1) - - /** Macro for calculating the baud value from a given baud rate when the U2X (double speed) bit is - * set. - */ - #define SERIAL_2X_UBBRVAL(baud) ((((F_CPU / 8) + (baud / 2)) / (baud)) - 1) - - /* Function Prototypes: */ - /** Transmits a given string located in program space (FLASH) through the USART. - * - * \param[in] FlashStringPtr Pointer to a string located in program space. - */ - void Serial_SendString_P(const char* FlashStringPtr) ATTR_NON_NULL_PTR_ARG(1); - - /** Transmits a given string located in SRAM memory through the USART. - * - * \param[in] StringPtr Pointer to a string located in SRAM space. - */ - void Serial_SendString(const char* StringPtr) ATTR_NON_NULL_PTR_ARG(1); - - /** Transmits a given buffer located in SRAM memory through the USART. - * - * \param[in] Buffer Pointer to a buffer containing the data to send. - * \param[in] Length Length of the data to send, in bytes. - */ - void Serial_SendData(const uint8_t* Buffer, uint16_t Length) ATTR_NON_NULL_PTR_ARG(1); - /* Inline Functions: */ - /** Initializes the USART, ready for serial data transmission and reception. This initializes the interface to - * standard 8-bit, no parity, 1 stop bit settings suitable for most applications. - * - * \param[in] BaudRate Serial baud rate, in bits per second. - * \param[in] DoubleSpeed Enables double speed mode when set, halving the sample time to double the baud rate. - */ - 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)); - - DDRD |= (1 << 3); - PORTD |= (1 << 2); - } - - /** Turns off the USART driver, disabling and returning used hardware to their default configuration. */ - static inline void Serial_Disable(void) - { - UCSR1B = 0; - UCSR1A = 0; - UCSR1C = 0; - - UBRR1 = 0; - - DDRD &= ~(1 << 3); - PORTD &= ~(1 << 2); - } - - /** Creates a standard character stream from the USART so that it can be used with all the regular functions - * in the avr-libc \c library that accept a \c FILE stream as a destination (e.g. \c fprintf). The created - * stream is bidirectional and can be used for both input and output functions. - * - * Reading data from this stream is non-blocking, i.e. in most instances, complete strings cannot be read in by a single - * fetch, as the endpoint will not be ready at some point in the transmission, aborting the transfer. However, this may - * be used when the read data is processed byte-per-bye (via \c getc()) or when the user application will implement its own - * line buffering. - * - * \param[in,out] Stream Pointer to a FILE structure where the created stream should be placed, if \c NULL stdio - * and stdin will be configured to use the USART. - * - * \pre The USART must first be configured via a call to \ref Serial_Init() before the stream is used. - */ - static inline void Serial_CreateStream(FILE* Stream) - { - if (!(Stream)) - { - Stream = &USARTSerialStream; - stdin = Stream; - stdout = Stream; - } - - *Stream = (FILE)FDEV_SETUP_STREAM(Serial_putchar, Serial_getchar, _FDEV_SETUP_RW); - } - - /** Identical to \ref Serial_CreateStream(), except that reads are blocking until the calling stream function terminates - * the transfer. - * - * \param[in,out] Stream Pointer to a FILE structure where the created stream should be placed, if \c NULL stdio - * and stdin will be configured to use the USART. - * - * \pre The USART must first be configured via a call to \ref Serial_Init() before the stream is used. - */ - static inline void Serial_CreateBlockingStream(FILE* Stream) - { - if (!(Stream)) - { - Stream = &USARTSerialStream; - stdin = Stream; - stdout = Stream; - } - - *Stream = (FILE)FDEV_SETUP_STREAM(Serial_putchar, Serial_getchar_Blocking, _FDEV_SETUP_RW); - } - - /** Indicates whether a character has been received through the USART. - * - * \return Boolean \c true if a character has been received, \c 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. - */ - static inline void Serial_SendByte(const char DataByte) ATTR_ALWAYS_INLINE; - static inline void Serial_SendByte(const char DataByte) - { - while (!(UCSR1A & (1 << UDRE1))); - UDR1 = DataByte; - } - - /** Receives the next byte from the USART. - * - * \return Next byte received from the USART, or a negative value if no byte has been received. - */ - static inline int16_t Serial_ReceiveByte(void) ATTR_ALWAYS_INLINE; - static inline int16_t Serial_ReceiveByte(void) - { - if (!(Serial_IsCharReceived())) - return -1; - - return UDR1; - } - - /* Disable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - } + /* Includes: */ + #if (ARCH == ARCH_AVR8) + #include "AVR8/Serial_AVR8.h" + #elif (ARCH == ARCH_XMEGA) + #include "XMEGA/Serial_XMEGA.h" + #else + #error The Serial peripheral driver is not currently available for your selected architecture. #endif #endif -/** @} */ -