import ChibiOS 2.0.8
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NIIBE Yutaka
182
ChibiOS_2.0.8/os/hal/platforms/LPC214x/serial_lld.h
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182
ChibiOS_2.0.8/os/hal/platforms/LPC214x/serial_lld.h
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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---
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes ChibiOS/RT, without being obliged to provide
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the source code for any proprietary components. See the file exception.txt
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for full details of how and when the exception can be applied.
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*/
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/**
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* @file LPC214x/serial_lld.h
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* @brief LPC214x low level serial driver header.
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*
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* @addtogroup LPC214x_SERIAL
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* @{
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*/
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#ifndef _SERIAL_LLD_H_
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#define _SERIAL_LLD_H_
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#if CH_HAL_USE_SERIAL || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @brief UART0 driver enable switch.
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* @details If set to @p TRUE the support for UART0 is included.
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* @note The default is @p TRUE .
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*/
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#if !defined(USE_LPC214x_UART0) || defined(__DOXYGEN__)
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#define USE_LPC214x_UART0 TRUE
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#endif
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/**
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* @brief UART1 driver enable switch.
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* @details If set to @p TRUE the support for UART1 is included.
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* @note The default is @p TRUE.
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*/
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#if !defined(USE_LPC214x_UART1) || defined(__DOXYGEN__)
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#define USE_LPC214x_UART1 TRUE
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#endif
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/**
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* @brief FIFO preload parameter.
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* @details Configuration parameter, this values defines how many bytes are
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* preloaded in the HW transmit FIFO for each interrupt, the maximum
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* value is 16 the minimum is 1.
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* @note An high value reduces the number of interrupts generated but can
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* also increase the worst case interrupt response time because the
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* preload loops.
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*/
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#if !defined(LPC214x_UART_FIFO_PRELOAD) || defined(__DOXYGEN__)
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#define LPC214x_UART_FIFO_PRELOAD 16
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#endif
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/**
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* @brief UART0 interrupt priority level setting.
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*/
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#if !defined(LPC214x_UART0_PRIORITY) || defined(__DOXYGEN__)
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#define LPC214x_UART0_PRIORITY 1
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#endif
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/**
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* @brief UART1 interrupt priority level setting.
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*/
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#if !defined(LPC214x_UART1_PRIORITY) || defined(__DOXYGEN__)
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#define LPC214x_UART1_PRIORITY 2
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#endif
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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#if (LPC214x_UART_FIFO_PRELOAD < 1) || (LPC214x_UART_FIFO_PRELOAD > 16)
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#error "invalid LPC214x_UART_FIFO_PRELOAD setting"
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#endif
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Serial Driver condition flags type.
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*/
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typedef uint32_t sdflags_t;
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/**
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* @brief LPC214x Serial Driver configuration structure.
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* @details An instance of this structure must be passed to @p sdStart()
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* in order to configure and start a serial driver operations.
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*/
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typedef struct {
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/**
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* @brief Bit rate.
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*/
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uint32_t sc_speed;
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/**
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* @brief Initialization value for the LCR register.
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*/
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uint32_t sc_lcr;
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/**
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* @brief Initialization value for the FCR register.
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*/
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uint32_t sc_fcr;
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} SerialConfig;
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/**
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* @brief @p SerialDriver specific data.
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*/
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#define _serial_driver_data \
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_base_asynchronous_channel_data \
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/* Driver state.*/ \
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sdstate_t state; \
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/* Input queue.*/ \
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InputQueue iqueue; \
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/* Output queue.*/ \
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OutputQueue oqueue; \
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/* Status Change @p EventSource.*/ \
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EventSource sevent; \
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/* I/O driver status flags.*/ \
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sdflags_t flags; \
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/* Input circular buffer.*/ \
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uint8_t ib[SERIAL_BUFFERS_SIZE]; \
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/* Output circular buffer.*/ \
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uint8_t ob[SERIAL_BUFFERS_SIZE]; \
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/* End of the mandatory fields.*/ \
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/* Pointer to the USART registers block.*/ \
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UART *uart;
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#if USE_LPC214x_UART0 && !defined(__DOXYGEN__)
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extern SerialDriver SD1;
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#endif
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#if USE_LPC214x_UART1 && !defined(__DOXYGEN__)
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extern SerialDriver SD2;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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void sd_lld_init(void);
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void sd_lld_start(SerialDriver *sdp, const SerialConfig *config);
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void sd_lld_stop(SerialDriver *sdp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* CH_HAL_USE_SERIAL */
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#endif /* _SERIAL_LLD_H_ */
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/** @} */
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