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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 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/sdc_lld.h
* @brief STM32 SDC subsystem low level driver header.
*
* @addtogroup SDC
* @{
*/
#ifndef _SDC_LLD_H_
#define _SDC_LLD_H_
#if HAL_USE_SDC || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/**
* @brief Value to clear all interrupts flag at once.
*/
#define STM32_SDIO_ICR_ALL_FLAGS (SDIO_ICR_CCRCFAILC | SDIO_ICR_DCRCFAILC | \
SDIO_ICR_CTIMEOUTC | SDIO_ICR_DTIMEOUTC | \
SDIO_ICR_TXUNDERRC | SDIO_ICR_RXOVERRC | \
SDIO_ICR_CMDRENDC | SDIO_ICR_CMDSENTC | \
SDIO_ICR_DATAENDC | SDIO_ICR_STBITERRC | \
SDIO_ICR_DBCKENDC | SDIO_ICR_SDIOITC | \
SDIO_ICR_CEATAENDC)
/**
* @brief Mask of error flags in STA register.
*/
#define STM32_SDIO_STA_ERROR_MASK (SDIO_STA_CCRCFAIL | SDIO_STA_DCRCFAIL | \
SDIO_STA_CTIMEOUT | SDIO_STA_DTIMEOUT | \
SDIO_STA_TXUNDERR | SDIO_STA_RXOVERR)
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name Configuration options
* @{
*/
/**
* @brief SDIO DMA priority (0..3|lowest..highest).
*/
#if !defined(STM32_SDC_SDIO_DMA_PRIORITY) || defined(__DOXYGEN__)
#define STM32_SDC_SDIO_DMA_PRIORITY 3
#endif
/**
* @brief SDIO interrupt priority level setting.
*/
#if !defined(STM32_SDC_SDIO_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define STM32_SDC_SDIO_IRQ_PRIORITY 9
#endif
/** @} */
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
#if !STM32_HAS_SDIO
#error "SDIO not present in the selected device"
#endif
#if !defined(STM32_DMA_REQUIRED)
#define STM32_DMA_REQUIRED
#endif
/*
* SDIO clock divider.
*/
#if (defined(STM32F4XX) || defined(STM32F2XX))
#define STM32_SDIO_DIV_HS 0
#define STM32_SDIO_DIV_LS 120
#elif STM32_HCLK > 48000000
#define STM32_SDIO_DIV_HS 1
#define STM32_SDIO_DIV_LS 178
#else
#define STM32_SDIO_DIV_HS 0
#define STM32_SDIO_DIV_LS 118
#endif
/**
* @brief SDIO data timeouts in SDIO clock cycles.
*/
#if (defined(STM32F4XX) || defined(STM32F2XX))
#define STM32_SDC_WRITE_TIMEOUT \
(((48000000 / (STM32_SDIO_DIV_HS + 2)) / 1000) * SDC_WRITE_TIMEOUT_MS)
#define STM32_SDC_READ_TIMEOUT \
(((48000000 / (STM32_SDIO_DIV_HS + 2)) / 1000) * SDC_READ_TIMEOUT_MS)
#else
#define STM32_SDC_WRITE_TIMEOUT \
(((STM32_HCLK /((STM32_SDIO_DIV_HS + 2)) / 1000) * SDC_WRITE_TIMEOUT_MS)
#define STM32_SDC_READ_TIMEOUT \
(((STM32_HCLK /((STM32_SDIO_DIV_HS + 2)) / 1000) * SDC_READ_TIMEOUT_MS)
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Type of SDIO bus mode.
*/
typedef enum {
SDC_MODE_1BIT = 0,
SDC_MODE_4BIT,
SDC_MODE_8BIT
} sdcbusmode_t;
/**
* @brief Type of card flags.
*/
typedef uint32_t sdcmode_t;
/**
* @brief SDC Driver condition flags type.
*/
typedef uint32_t sdcflags_t;
/**
* @brief Type of a structure representing an SDC driver.
*/
typedef struct SDCDriver SDCDriver;
/**
* @brief Driver configuration structure.
* @note It could be empty on some architectures.
*/
typedef struct {
uint32_t dummy;
} SDCConfig;
/**
* @brief Structure representing an SDC driver.
*/
struct SDCDriver {
/**
* @brief Driver state.
*/
sdcstate_t state;
/**
* @brief Current configuration data.
*/
const SDCConfig *config;
/**
* @brief Various flags regarding the mounted card.
*/
sdcmode_t cardmode;
/**
* @brief Errors flags.
*/
sdcflags_t errors;
/**
* @brief Card CID.
*/
uint32_t cid[4];
/**
* @brief Card CSD.
*/
uint32_t csd[4];
/**
* @brief Card RCA.
*/
uint32_t rca;
/**
* @brief Total number of blocks in card.
*/
uint32_t capacity;
/* End of the mandatory fields.*/
/**
* @brief Thread waiting for I/O completion IRQ.
*/
Thread *thread;
/**
* @brief DMA mode bit mask.
*/
uint32_t dmamode;
/**
* @brief Transmit DMA channel.
*/
const stm32_dma_stream_t *dma;
/**
* @brief Pointer to the SDIO registers block.
* @note Used only for dubugging purpose.
*/
#if CH_DBG_ENABLE_ASSERTS
SDIO_TypeDef *sdio;
#endif
};
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#if !defined(__DOXYGEN__)
extern SDCDriver SDCD1;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void sdc_lld_init(void);
void sdc_lld_start(SDCDriver *sdcp);
void sdc_lld_stop(SDCDriver *sdcp);
void sdc_lld_start_clk(SDCDriver *sdcp);
void sdc_lld_set_data_clk(SDCDriver *sdcp);
void sdc_lld_stop_clk(SDCDriver *sdcp);
void sdc_lld_set_bus_mode(SDCDriver *sdcp, sdcbusmode_t mode);
void sdc_lld_send_cmd_none(SDCDriver *sdcp, uint8_t cmd, uint32_t arg);
bool_t sdc_lld_send_cmd_short(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
uint32_t *resp);
bool_t sdc_lld_send_cmd_short_crc(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
uint32_t *resp);
bool_t sdc_lld_send_cmd_long_crc(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
uint32_t *resp);
bool_t sdc_lld_read(SDCDriver *sdcp, uint32_t startblk,
uint8_t *buf, uint32_t n);
bool_t sdc_lld_write(SDCDriver *sdcp, uint32_t startblk,
const uint8_t *buf, uint32_t n);
bool_t sdc_lld_is_card_inserted(SDCDriver *sdcp);
bool_t sdc_lld_is_write_protected(SDCDriver *sdcp);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_SDC */
#endif /* _SDC_LLD_H_ */
/** @} */
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