From 2f4dba80ea1d68a1165ca04a6b4d1ccd5853c27d Mon Sep 17 00:00:00 2001 From: gdisirio Date: Tue, 26 Apr 2011 16:59:14 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2903 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/hal/src/sdc.c | 207 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 207 insertions(+) create mode 100644 os/hal/src/sdc.c (limited to 'os/hal/src') diff --git a/os/hal/src/sdc.c b/os/hal/src/sdc.c new file mode 100644 index 000000000..33f2b3612 --- /dev/null +++ b/os/hal/src/sdc.c @@ -0,0 +1,207 @@ +/* + 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 . +*/ + +/** + * @file sdc.c + * @brief SDC Driver code. + * + * @addtogroup SDC + * @{ + */ + +#include "ch.h" +#include "hal.h" + +#if HAL_USE_SDC || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver exported variables. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local variables. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +/** + * @brief SDC Driver initialization. + * @note This function is implicitly invoked by @p halInit(), there is + * no need to explicitly initialize the driver. + * + * @init + */ +void sdcInit(void) { + + sdc_lld_init(); +} + +/** + * @brief Initializes the standard part of a @p SDCDriver structure. + * + * @param[out] sdcp pointer to the @p SDCDriver object + * + * @init + */ +void sdcObjectInit(SDCDriver *sdcp) { + + sdcp->state = SDC_STOP; + sdcp->config = NULL; +} + +/** + * @brief Configures and activates the SDC peripheral. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @param[in] config pointer to the @p SDCConfig object + * + * @api + */ +void sdcStart(SDCDriver *sdcp, const SDCConfig *config) { + + chDbgCheck((sdcp != NULL) && (config != NULL), "sdcStart"); + + chSysLock(); + chDbgAssert((sdcp->state == SDC_STOP) || (sdcp->state == SDC_READY), + "sdcStart(), #1", "invalid state"); + sdcp->config = config; + sdc_lld_start(sdcp); + sdcp->state = SDC_READY; + chSysUnlock(); +} + +/** + * @brief Deactivates the SDC peripheral. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * + * @api + */ +void sdcStop(SDCDriver *sdcp) { + + chDbgCheck(sdcp != NULL, "sdcStop"); + + chSysLock(); + chDbgAssert((sdcp->state == SDC_STOP) || (sdcp->state == SDC_READY), + "sdcStop(), #1", "invalid state"); + sdc_lld_stop(sdcp); + sdcp->state = SDC_STOP; + chSysUnlock(); +} + +/** + * @brief Performs the initialization procedure on the inserted card. + * @details This function should be invoked when a card is inserted and + * brings the driver in the @p SDC_ACTIVE state where it is possible + * to perform read and write operations. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @return The operation status. + * @retval FALSE operation succeeded, the driver is now + * in the @p SDC_ACTIVE state. + * @retval TRUE operation failed. + * + * @api + */ +bool_t sdcConnect(SDCDriver *sdcp) { + + chDbgCheck(sdcp != NULL, "sdcConnect"); + + chSysLock(); + chDbgAssert(sdcp->state == SDC_READY, "mmcConnect(), #1", "invalid state"); + sdcp->state = SDC_INITNG; + chSysUnlock(); + + sdcp->state = SDC_ACTIVE; + return FALSE; +} + +/** + * @brief Brings the driver in a state safe for card removal. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @return The operation status. + * @retval FALSE the operation succeeded and the driver is now + * in the @p SDC_READY state. + * @retval TRUE the operation failed. + * + * @api + */ +bool_t sdcDisconnect(SDCDriver *sdcp) { + + chDbgCheck(sdcp != NULL, "sdcConnect"); + + chSysLock(); + chDbgAssert(sdcp->state == SDC_ACTIVE, + "sdcDisconnect(), #1", "invalid state"); + sdcp->state = SDC_READY; + chSysUnlock(); + return FALSE; +} + +/** + * @brief Reads one or more blocks. + * @pre The driver must be in the @p SDC_ACTIVE state after a successful + * sdcConnect() invocation. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @param[in] startblk first block to read + * @param[out] buffer pointer to the read buffer + * @return The operation status. + * @retval FALSE operation succeeded, the requested blocks have been + * read. + * @retval TRUE operation failed, the state of the buffer is uncertain. + * + * @api + */ +bool_t sdcRead(SDCDriver *sdcp, uint32_t startblk, + uint8_t *buffer, uint32_t n) { + +} + +/** + * @brief Writes one or more blocks. + * @pre The driver must be in the @p SDC_ACTIVE state after a successful + * sdcConnect() invocation. + * + * @param[in] sdcp pointer to the @p SDCDriver object + * @param[in] startblk first block to write + * @param[out] buffer pointer to the write buffer + * @return The operation status. + * @retval FALSE operation succeeded, the requested blocks have been + * written. + * @retval TRUE operation failed. + * + * @api + */ +bool_t sdcWrite(SDCDriver *sdcp, uint32_t startblk, + const uint8_t *buffer, uint32_t n) { + +} + +#endif /* HAL_USE_SDC */ + +/** @} */ -- cgit v1.2.3