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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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 <http://www.gnu.org/licenses/>.
*/
/**
* @file STM8S/serial_lld.h
* @brief STM8S low level serial driver header.
*
* @addtogroup SERIAL
* @{
*/
#ifndef _SERIAL_LLD_H_
#define _SERIAL_LLD_H_
#if HAL_USE_SERIAL || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
#define SD_MODE_PARITY 0x07 /**< @brief Parity field mask. */
#define SD_MODE_PARITY_NONE 0x00 /**< @brief No parity. */
#define SD_MODE_PARITY_EVEN 0x05 /**< @brief Even parity. */
#define SD_MODE_PARITY_ODD 0x07 /**< @brief Odd parity. */
#define SD_MODE_STOP 0x30 /**< @brief Stop bits mask. */
#define SD_MODE_STOP_1 0x00 /**< @brief One stop bit. */
#define SD_MODE_STOP_2 0x20 /**< @brief Two stop bits. */
#define SD_MODE_STOP_1P5 0x30 /**< @brief 1.5 stop bits. */
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @brief UART1 driver enable switch.
* @details If set to @p TRUE the support for UART1 is included.
* @note The default is @p TRUE.
*/
#if !defined(STM8S_SERIAL_USE_UART1) || defined(__DOXYGEN__)
#define STM8S_SERIAL_USE_UART1 TRUE
#endif
/**
* @brief UART2 driver enable switch.
* @details If set to @p TRUE the support for UART3 is included.
* @note The default is @p TRUE.
*/
#if !defined(STM8S_SERIAL_USE_UART2) || defined(__DOXYGEN__)
#define STM8S_SERIAL_USE_UART2 TRUE
#endif
/**
* @brief UART3 driver enable switch.
* @details If set to @p TRUE the support for UART3 is included.
* @note The default is @p TRUE.
*/
#if !defined(STM8S_SERIAL_USE_UART3) || defined(__DOXYGEN__)
#define STM8S_SERIAL_USE_UART3 TRUE
#endif
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
#if STM8S_SERIAL_USE_UART2 && STM8S_SERIAL_USE_UART3
#error "STM8S UART2 and UART3 cannot be used together"
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Serial Driver condition flags type.
*/
typedef uint8_t sdflags_t;
/**
* @brief Generic Serial Driver configuration structure.
* @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 {
/**
* @brief Bit rate register.
*/
uint16_t sc_brr;
/**
* @brief Mode flags.
*/
uint8_t sc_mode;
} SerialConfig;
/**
* @brief @p SerialDriver specific data.
*/
#define _serial_driver_data \
_base_asynchronous_channel_data \
/* Driver state.*/ \
sdstate_t state; \
/* Input queue.*/ \
InputQueue iqueue; \
/* Output queue.*/ \
OutputQueue oqueue; \
/* Status Change @p EventSource.*/ \
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]; \
/* End of the mandatory fields.*/
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/**
* @brief Macro for baud rate computation.
* @note Make sure the final baud rate is within tolerance.
*/
#define BRR(b) (SYSCLK / (b))
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#if STM8S_SERIAL_USE_UART1 && !defined(__DOXYGEN__)
extern SerialDriver SD1;
#endif
#if STM8S_SERIAL_USE_UART2 && !defined(__DOXYGEN__)
extern SerialDriver SD2;
#endif
#if STM8S_SERIAL_USE_UART3 && !defined(__DOXYGEN__)
extern SerialDriver SD3;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void sd_lld_init(void);
void sd_lld_start(SerialDriver *sdp, const SerialConfig *config);
void sd_lld_stop(SerialDriver *sdp);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_SERIAL */
#endif /* _SERIAL_LLD_H_ */
/** @} */
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