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tinySA/os/hal/templates/sdc_lld.c

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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012,2013 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 templates/sdc_lld.c
* @brief SDC Driver subsystem low level driver source template.
*
* @addtogroup SDC
* @{
*/
#include "ch.h"
#include "hal.h"
#if HAL_USE_SDC || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/** @brief SDCD1 driver identifier.*/
#if PLATFORM_SDC_USE_SDC1 || defined(__DOXYGEN__)
SDCDriver SDCD1;
#endif
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level SDC driver initialization.
*
* @notapi
*/
void sdc_lld_init(void) {
sdcObjectInit(&SDCD1);
}
/**
* @brief Configures and activates the SDC peripheral.
*
* @param[in] sdcp pointer to the @p SDCDriver object
*
* @notapi
*/
void sdc_lld_start(SDCDriver *sdcp) {
if (sdcp->state == BLK_STOP) {
}
}
/**
* @brief Deactivates the SDC peripheral.
*
* @param[in] sdcp pointer to the @p SDCDriver object
*
* @notapi
*/
void sdc_lld_stop(SDCDriver *sdcp) {
if (sdcp->state != BLK_STOP) {
}
}
/**
* @brief Starts the SDIO clock and sets it to init mode (400kHz or less).
*
* @param[in] sdcp pointer to the @p SDCDriver object
*
* @notapi
*/
void sdc_lld_start_clk(SDCDriver *sdcp) {
(void)sdcp;
}
/**
* @brief Sets the SDIO clock to data mode (25MHz or less).
*
* @param[in] sdcp pointer to the @p SDCDriver object
*
* @notapi
*/
void sdc_lld_set_data_clk(SDCDriver *sdcp) {
(void)sdcp;
}
/**
* @brief Stops the SDIO clock.
*
* @param[in] sdcp pointer to the @p SDCDriver object
*
* @notapi
*/
void sdc_lld_stop_clk(SDCDriver *sdcp) {
(void)sdcp;
}
/**
* @brief Switches the bus to 4 bits mode.
*
* @param[in] sdcp pointer to the @p SDCDriver object
* @param[in] mode bus mode
*
* @notapi
*/
void sdc_lld_set_bus_mode(SDCDriver *sdcp, sdcbusmode_t mode) {
uint32_t clk = SDIO->CLKCR & ~SDIO_CLKCR_WIDBUS;
(void)sdcp;
switch (mode) {
case SDC_MODE_1BIT:
break;
case SDC_MODE_4BIT:
break;
case SDC_MODE_8BIT:
break;
}
}
/**
* @brief Sends an SDIO command with no response expected.
*
* @param[in] sdcp pointer to the @p SDCDriver object
* @param[in] cmd card command
* @param[in] arg command argument
*
* @notapi
*/
void sdc_lld_send_cmd_none(SDCDriver *sdcp, uint8_t cmd, uint32_t arg) {
(void)sdcp;
}
/**
* @brief Sends an SDIO command with a short response expected.
* @note The CRC is not verified.
*
* @param[in] sdcp pointer to the @p SDCDriver object
* @param[in] cmd card command
* @param[in] arg command argument
* @param[out] resp pointer to the response buffer (one word)
*
* @return The operation status.
* @retval CH_SUCCESS operation succeeded.
* @retval CH_FAILED operation failed.
*
* @notapi
*/
bool_t sdc_lld_send_cmd_short(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
uint32_t *resp) {
return CH_SUCCESS;
}
/**
* @brief Sends an SDIO command with a short response expected and CRC.
*
* @param[in] sdcp pointer to the @p SDCDriver object
* @param[in] cmd card command
* @param[in] arg command argument
* @param[out] resp pointer to the response buffer (one word)
*
* @return The operation status.
* @retval CH_SUCCESS operation succeeded.
* @retval CH_FAILED operation failed.
*
* @notapi
*/
bool_t sdc_lld_send_cmd_short_crc(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
uint32_t *resp) {
(void)sdcp;
return CH_SUCCESS;
}
/**
* @brief Sends an SDIO command with a long response expected and CRC.
*
* @param[in] sdcp pointer to the @p SDCDriver object
* @param[in] cmd card command
* @param[in] arg command argument
* @param[out] resp pointer to the response buffer (four words)
*
* @return The operation status.
* @retval CH_SUCCESS operation succeeded.
* @retval CH_FAILED operation failed.
*
* @notapi
*/
bool_t sdc_lld_send_cmd_long_crc(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
uint32_t *resp) {
(void)sdcp;
return CH_SUCCESS;
}
/**
* @brief Reads one or more blocks.
*
* @param[in] sdcp pointer to the @p SDCDriver object
* @param[in] startblk first block to read
* @param[out] buf pointer to the read buffer
* @param[in] n number of blocks to read
*
* @return The operation status.
* @retval CH_SUCCESS operation succeeded.
* @retval CH_FAILED operation failed.
*
* @notapi
*/
bool_t sdc_lld_read(SDCDriver *sdcp, uint32_t startblk,
uint8_t *buf, uint32_t n) {
return CH_SUCCESS;
}
/**
* @brief Writes one or more blocks.
*
* @param[in] sdcp pointer to the @p SDCDriver object
* @param[in] startblk first block to write
* @param[out] buf pointer to the write buffer
* @param[in] n number of blocks to write
*
* @return The operation status.
* @retval CH_SUCCESS operation succeeded.
* @retval CH_FAILED operation failed.
*
* @notapi
*/
bool_t sdc_lld_write(SDCDriver *sdcp, uint32_t startblk,
const uint8_t *buf, uint32_t n) {
return CH_SUCCESS;
}
/**
* @brief Waits for card idle condition.
*
* @param[in] sdcp pointer to the @p SDCDriver object
*
* @return The operation status.
* @retval CH_SUCCESS the operation succeeded.
* @retval CH_FAILED the operation failed.
*
* @api
*/
bool_t sdc_lld_sync(SDCDriver *sdcp) {
(void)sdcp;
return CH_SUCCESS;
}
#endif /* HAL_USE_SDC */
/** @} */
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