diff options
Diffstat (limited to 'os')
-rw-r--r-- | os/hal/include/sdc.h | 94 | ||||
-rw-r--r-- | os/hal/platforms/STM32/sdc_lld.c | 167 | ||||
-rw-r--r-- | os/hal/platforms/STM32/sdc_lld.h | 152 | ||||
-rw-r--r-- | os/hal/src/sdc.c | 207 |
4 files changed, 620 insertions, 0 deletions
diff --git a/os/hal/include/sdc.h b/os/hal/include/sdc.h new file mode 100644 index 000000000..d578e65b4 --- /dev/null +++ b/os/hal/include/sdc.h @@ -0,0 +1,94 @@ +/*
+ 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 sdc.h
+ * @brief SDC Driver macros and structures.
+ *
+ * @addtogroup SDC
+ * @{
+ */
+
+#ifndef _SDC_H_
+#define _SDC_H_
+
+#if HAL_USE_SDC || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief Driver state machine possible states.
+ */
+typedef enum {
+ SDC_UNINIT = 0, /**< Not initialized. */
+ SDC_STOP = 1, /**< Stopped. */
+ SDC_READY = 2, /**< Ready. */
+ SDC_INITNG = 3, /**< Card initialization in progress. */
+ SDC_ACTIVE = 4, /**< Cart initialized. */
+ SDC_READING = 5, /**< Read operation in progress. */
+ SDC_WRITING = 6, /**< Write operation in progress. */
+} sdcstate_t;
+
+#include "sdc_lld.h"
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void sdcInit(void);
+ void sdcObjectInit(SDCDriver *sdcp);
+ void sdcStart(SDCDriver *sdcp, const SDCConfig *config);
+ void sdcStop(SDCDriver *sdcp);
+ bool_t sdcConnect(SDCDriver *sdcp);
+ bool_t sdcDisconnect(SDCDriver *sdcp);
+ bool_t sdcRead(SDCDriver *sdcp, uint32_t startblk,
+ uint8_t *buffer, uint32_t n);
+ bool_t sdcWrite(SDCDriver *sdcp, uint32_t startblk,
+ const uint8_t *buffer, uint32_t n);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_SDC */
+
+#endif /* _SDC_H_ */
+
+/** @} */
diff --git a/os/hal/platforms/STM32/sdc_lld.c b/os/hal/platforms/STM32/sdc_lld.c new file mode 100644 index 000000000..48f8561f9 --- /dev/null +++ b/os/hal/platforms/STM32/sdc_lld.c @@ -0,0 +1,167 @@ +/*
+ 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.c
+ * @brief STM32 SDC subsystem low level driver source.
+ *
+ * @addtogroup SDC
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if HAL_USE_SDC || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/** @brief SDCD1 driver identifier.*/
+SDCDriver SDCD1;
+
+/*===========================================================================*/
+/* Driver local variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+/**
+ * @brief SDIO IRQ handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(SDIO_IRQHandler) {
+
+ CH_IRQ_PROLOGUE();
+
+
+ CH_IRQ_EPILOGUE();
+}
+
+/*===========================================================================*/
+/* 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 == SDC_STOP) {
+ /* Note, the DMA must be enabled before the IRQs.*/
+ dmaAllocate(STM32_DMA2_ID, STM32_DMA_CHANNEL_4, NULL, NULL);
+ NVICEnableVector(SDIO_IRQn,
+ CORTEX_PRIORITY_MASK(STM32_SDC_SDIO_IRQ_PRIORITY));
+ RCC->AHBENR |= RCC_AHBENR_SDIOEN;
+ }
+ /* Configuration, card clock is initially stopped.*/
+ SDIO->POWER = 0;
+ SDIO->CLKCR = 0;
+ SDIO->DCTRL = 0;
+}
+
+/**
+ * @brief Deactivates the SDC peripheral.
+ *
+ * @param[in] sdcp pointer to the @p SDCDriver object
+ *
+ * @notapi
+ */
+void sdc_lld_stop(SDCDriver *sdcp) {
+
+ if ((sdcp->state == SDC_READY) || (sdcp->state == SDC_ACTIVE)) {
+ SDIO->POWER = 0;
+ SDIO->CLKCR = 0;
+ SDIO->DCTRL = 0;
+
+ /* Clock deactivation.*/
+ NVICDisableVector(SDIO_IRQn);
+ dmaRelease(STM32_DMA2_ID, STM32_DMA_CHANNEL_4);
+ }
+}
+
+/**
+ * @brief Sends an SDIO command with no response expected.
+ *
+ * @param[in] sdcp pointer to the @p SDCDriver object
+ *
+ * @notapi
+ */
+void sdc_lld_send_cmd_none(SDCDriver *sdcp, uint8_t cmd, uint32_t arg) {
+
+}
+
+/**
+ * @brief Sends an SDIO command with a short response expected.
+ *
+ * @param[in] sdcp pointer to the @p SDCDriver object
+ * @return The operation status.
+ * @retval FALSE the operation succeeded.
+ * @retval TRUE the operation failed because timeout, CRC check or
+ * other errors.
+ *
+ * @notapi
+ */
+bool_t sdc_lld_send_cmd_short(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
+ uint32_t *resp) {
+
+}
+
+/**
+ * @brief Sends an SDIO command with a long response expected.
+ *
+ * @param[in] sdcp pointer to the @p SDCDriver object
+ * @return The operation status.
+ * @retval FALSE the operation succeeded.
+ * @retval TRUE the operation failed because timeout, CRC check or
+ * other errors.
+ *
+ * @notapi
+ */
+bool_t sdc_lld_send_cmd_long(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
+ uint32_t *resp) {
+
+}
+
+#endif /* HAL_USE_SDC */
+
+/** @} */
diff --git a/os/hal/platforms/STM32/sdc_lld.h b/os/hal/platforms/STM32/sdc_lld.h new file mode 100644 index 000000000..012fdb1c7 --- /dev/null +++ b/os/hal/platforms/STM32/sdc_lld.h @@ -0,0 +1,152 @@ +/*
+ 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. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @brief SDIO DMA priority (0..3|lowest..highest).
+ */
+#if !defined(STM32_SDC_SDIO_DMA_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_SDC_SDIO_DMA_PRIORITY 2
+#endif
+
+/**
+ * @brief SDIO interrupt priority level setting.
+ */
+#if !defined(STM32_SDC_SDIO_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_SDC_SDIO_IRQ_PRIORITY 9
+#endif
+
+/**
+ * @brief SDIO DMA error hook.
+ * @note The default action for DMA errors is a system halt because DMA
+ * error can only happen because programming errors.
+ */
+#if !defined(STM32_SDC_DMA_ERROR_HOOK) || defined(__DOXYGEN__)
+#define STM32_SDC_DMA_ERROR_HOOK(sdcp) chSysHalt()
+#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 STM32_HCLK > 48000000
+#define STM32_SDIO_DIV_HS 0x01
+#define STM32_SDIO_DIV_LS 0xB2
+#else
+#define STM32_SDIO_DIV_HS 0x00
+#define STM32_SDIO_DIV_LS 0x76
+#endif
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+
+/**
+ * @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 {
+
+} SDCConfig;
+
+/**
+ * @brief Structure representing an SDC driver.
+ */
+struct SDCDriver {
+ /**
+ * @brief Driver state.
+ */
+ sdcstate_t state;
+ /**
+ * @brief Current configuration data.
+ */
+ const SDCConfig *config;
+ /* End of the mandatory fields.*/
+};
+
+/*===========================================================================*/
+/* 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_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_long(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
+ uint32_t *resp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_SDC */
+
+#endif /* _SDC_LLD_H_ */
+
+/** @} */
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 <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @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 */
+
+/** @} */
|