diff options
Diffstat (limited to 'os/hal/platforms/STM32')
| -rw-r--r-- | os/hal/platforms/STM32/sdc_lld.c | 167 | ||||
| -rw-r--r-- | os/hal/platforms/STM32/sdc_lld.h | 152 |
2 files changed, 319 insertions, 0 deletions
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_ */
+
+/** @} */
|