164 lines
6.0 KiB
C
164 lines
6.0 KiB
C
/*
|
|
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 STM32/uart_lld.h
|
|
* @brief STM32 low level UART driver header.
|
|
*
|
|
* @addtogroup STM32_UART
|
|
* @{
|
|
*/
|
|
|
|
#ifndef _UART_LLD_H_
|
|
#define _UART_LLD_H_
|
|
|
|
#if CH_HAL_USE_UART || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Driver constants. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver pre-compile time settings. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief UART driver on USART1 enable switch.
|
|
* @details If set to @p TRUE the support for USART1 is included.
|
|
* @note The default is @p FALSE.
|
|
*/
|
|
#if !defined(STM32_UART_USE_USART1) || defined(__DOXYGEN__)
|
|
#define STM32_UART_USE_USART1 TRUE
|
|
#endif
|
|
|
|
/**
|
|
* @brief USART1 interrupt priority level setting.
|
|
*/
|
|
#if !defined(STM32_UART_USART1_IRQ_PRIO) || defined(__DOXYGEN__)
|
|
#define STM32_UART_USART1_IRQ_PRIORITY 12
|
|
#endif
|
|
|
|
/**
|
|
* @brief USART1 DMA priority (0..3|lowest..highest).
|
|
* @note The priority level is used for both the TX and RX DMA channels but
|
|
* because of the channels ordering the RX channel has always priority
|
|
* over the TX channel.
|
|
*/
|
|
#if !defined(STM32_UART_USART1_DMA_PRIO) || defined(__DOXYGEN__)
|
|
#define STM32_UART_USART1_DMA_PRIORITY 1
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Derived constants and error checks. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver data structures and types. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief UART driver condition flags type.
|
|
*/
|
|
typedef uint32_t uartflags_t;
|
|
|
|
/**
|
|
* @brief Driver configuration structure.
|
|
* @note It could be empty on some architectures.
|
|
*/
|
|
typedef struct {
|
|
/** @brief End of transmission buffer callback.*/
|
|
uartcb_t uc_txend1;
|
|
/** @brief Physical end of transmission callback.*/
|
|
uartcb_t uc_txend2;
|
|
/** @brief Receive buffer filled callback.*/
|
|
uartcb_t uc_rxend;
|
|
/** @brief Character received while out if the @p UART_RECEIVE state.*/
|
|
uartcb_t uc_rxchar;
|
|
/** @brief Receive error callback.*/
|
|
uartcb_t uc_rxerr;
|
|
/* End of the mandatory fields.*/
|
|
/** @brief Bit rate.*/
|
|
uint32_t uc_speed;
|
|
/** @brief Initialization value for the CR1 register.*/
|
|
uint16_t uc_cr1;
|
|
/** @brief Initialization value for the CR2 register.*/
|
|
uint16_t uc_cr2;
|
|
/** @brief Initialization value for the CR3 register.*/
|
|
uint16_t uc_cr3;
|
|
} UARTConfig;
|
|
|
|
/**
|
|
* @brief Structure representing an UART driver.
|
|
*/
|
|
typedef struct {
|
|
/** @brief Driver state.*/
|
|
uartstate_t ud_state;
|
|
/** @brief Current configuration data.*/
|
|
const UARTConfig *ud_config;
|
|
/** @brief Transmitter state.*/
|
|
uarttxstate_t ud_txstate;
|
|
/** @brief Receiver state.*/
|
|
uartrxstate_t ud_rxstate;
|
|
/** @brief UART driver status flags.*/
|
|
uartflags_t ud_flags;
|
|
/* End of the mandatory fields.*/
|
|
/** @brief Default receive buffer while into @p UART_RX_IDLE state.*/
|
|
uint16_t ud_rxbuf;
|
|
/** @brief Pointer to the USART registers block.*/
|
|
USART_TypeDef *ud_usart;
|
|
/** @brief Pointer to the receive DMA channel registers block.*/
|
|
DMA_Channel_TypeDef *ud_dmarx;
|
|
/** @brief Receive DMA flags mask*/
|
|
uint32_t ud_dmarmsk;
|
|
/** @brief Pointer to the transmit DMA channel registers block.*/
|
|
DMA_Channel_TypeDef *ud_dmatx;
|
|
/** @brief Transmit DMA flags mask*/
|
|
uint32_t ud_dmatmsk;
|
|
/** @brief DMA priority bit mask.*/
|
|
uint32_t ud_dmaccr;
|
|
} UARTDriver;
|
|
|
|
/*===========================================================================*/
|
|
/* Driver macros. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* External declarations. */
|
|
/*===========================================================================*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
void uart_lld_init(void);
|
|
void uart_lld_start(UARTDriver *uartp);
|
|
void uart_lld_stop(UARTDriver *uartp);
|
|
void uart_lld_start_send(UARTDriver *uartp, size_t n, const void *txbuf);
|
|
void uart_lld_stop_send(UARTDriver *uartp);
|
|
void uart_lld_start_receive(UARTDriver *uartp, size_t n, void *rxbuf);
|
|
void uart_lld_stop_receive(UARTDriver *uartp);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* CH_HAL_USE_UART */
|
|
|
|
#endif /* _UART_LLD_H_ */
|
|
|
|
/** @} */
|