/* ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. This file is part of ChibiOS/RT. ChibiOS/RT is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. ChibiOS/RT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ /** * @file AT91SAM7X/serial_lld.h * @brief AT91SAM7X low level serial driver header * @addtogroup AT91SAM7X_SERIAL * @{ */ #ifndef _SERIAL_LLD_H_ #define _SERIAL_LLD_H_ /*===========================================================================*/ /* Driver pre-compile time settings. */ /*===========================================================================*/ /** * @brief Serial buffers size. * @details Configuration parameter, you can change the depth of the queue * buffers depending on the requirements of your application. * @note The default is 128 bytes for both the transmission and receive buffers. */ #if !defined(SERIAL_BUFFERS_SIZE) || defined(__DOXYGEN__) #define SERIAL_BUFFERS_SIZE 128 #endif /** * @brief UART0 driver enable switch. * @details If set to @p TRUE the support for USART1 is included. * @note The default is @p TRUE. */ #if !defined(USE_SAM7X_USART0) || defined(__DOXYGEN__) #define USE_SAM7X_USART0 TRUE #endif /** * @brief UART1 driver enable switch. * @details If set to @p TRUE the support for USART2 is included. * @note The default is @p TRUE. */ #if !defined(USE_SAM7X_USART1) || defined(__DOXYGEN__) #define USE_SAM7X_USART1 TRUE #endif /** * @brief UART1 interrupt priority level setting. */ #if !defined(SAM7X_USART0_PRIORITY) || defined(__DOXYGEN__) #define SAM7X_USART0_PRIORITY (AT91C_AIC_PRIOR_HIGHEST - 2) #endif /** * @brief UART2 interrupt priority level setting. */ #if !defined(SAM7X_USART1_PRIORITY) || defined(__DOXYGEN__) #define SAM7X_USART1_PRIORITY (AT91C_AIC_PRIOR_HIGHEST - 2) #endif /*===========================================================================*/ /* Unsupported event flags and custom events. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver data structures and types. */ /*===========================================================================*/ /** * Serial Driver condition flags type. */ typedef uint32_t sdflags_t; /** * @brief @p SerialDriver specific data. */ struct _serial_driver_data { /** * Input queue, incoming data can be read from this input queue by * using the queues APIs. */ InputQueue iqueue; /** * Output queue, outgoing data can be written to this output queue by * using the queues APIs. */ OutputQueue oqueue; /** * Status Change @p EventSource. This event is generated when one or more * condition flags change. */ EventSource sevent; /** * I/O driver status flags. */ sdflags_t flags; /** * Input circular buffer. */ uint8_t ib[SERIAL_BUFFERS_SIZE]; /** * Output circular buffer. */ uint8_t ob[SERIAL_BUFFERS_SIZE]; }; /** * @brief Generic Serial Driver static initializer. * @details An instance of this structure must be passed to @p sdStart() * in order to configure and start a serial driver operations. * * @note This structure content is architecture dependent, each driver * implementation defines its own version and the custom static * initializers. */ typedef struct { uint32_t speed; uint32_t mr; } SerialDriverConfig; /*===========================================================================*/ /* External declarations. */ /*===========================================================================*/ /** @cond never*/ #if defined(USE_SAM7X_USART0) extern SerialDriver COM1; #endif #if defined(USE_SAM7X_USART1) extern SerialDriver COM2; #endif #ifdef __cplusplus extern "C" { #endif void sd_lld_init(void); void sd_lld_start(SerialDriver *sdp, const SerialDriverConfig *config); void sd_lld_stop(SerialDriver *sdp); #ifdef __cplusplus } #endif /** @endcond*/ #endif /* _SERIAL_LLD_H_ */ /** @} */