diff options
| -rw-r--r-- | os/io/io.dox | 4 | ||||
| -rw-r--r-- | os/io/mmc_spi.c | 92 | ||||
| -rw-r--r-- | os/io/mmc_spi.h | 102 |
3 files changed, 196 insertions, 2 deletions
diff --git a/os/io/io.dox b/os/io/io.dox index 1f68a29c0..402c2e4ad 100644 --- a/os/io/io.dox +++ b/os/io/io.dox @@ -150,7 +150,7 @@ stop [label="SPI_STOP\nLow Power"];
ready [label="SPI_READY\nClock Enabled"];
active [label="SPI_ACTIVE\nBus Active"];
- uninit -> stop [label="spiInit()"];
+ uninit -> stop [label="spiObjectInit()"];
stop -> ready [label="spiStart()"];
ready -> ready [label="spiStart()"];
ready -> stop [label="spiStop()"];
@@ -190,7 +190,7 @@ stop [label="ADC_STOP\nLow Power"];
ready [label="ADC_READY\nClock Enabled"];
running [label="ADC_RUNNING\nConverting"];
- uninit -> stop [label="adcInit()"];
+ uninit -> stop [label="adcObjectInit()"];
stop -> ready [label="adcStart()"];
ready -> ready [label="adcStart()"];
ready -> stop [label="adcStop()"];
diff --git a/os/io/mmc_spi.c b/os/io/mmc_spi.c new file mode 100644 index 000000000..75162c193 --- /dev/null +++ b/os/io/mmc_spi.c @@ -0,0 +1,92 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 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 mmc_spi.c
+ * @brief MMC over SPI driver code
+ * @addtogroup MMC_SPI
+ * @{
+ */
+
+#include <ch.h>
+#include <spi.h>
+#include <mmc_spi.h>
+
+/**
+ * @brief MMC over SPI driver initialization.
+ */
+void mmcInit(void) {
+
+}
+
+/**
+ * @brief Initializes an instance.
+ *
+ * @param[in] mmcp pointer to the @p MMCDriver object
+ */
+void mmcObjectInit(MMCDriver *mmcp, SPIDriver *spip,
+ const SPIConfig *lscfg, const SPIConfig *hscfg,
+ mmcquery_t is_protected, mmcquery_t is_inserted) {
+
+ mmcp->mmc_state = MMC_STOP;
+ mmcp->mmc_config = NULL;
+ mmcp->mmc_spip = spip;
+ mmcp->mmc_lscfg = lscfg;
+ mmcp->mmc_hscfg = hscfg;
+ mmcp->mmc_is_protected = is_protected;
+ mmcp->mmc_is_inserted = is_inserted;
+}
+
+/**
+ * @brief Configures and activates the MMC peripheral.
+ *
+ * @param[in] mmcp pointer to the @p MMCDriver object
+ * @param[in] config pointer to the @p MMCConfig object
+ */
+void mmcStart(MMCDriver *mmcp, const MMCConfig *config) {
+
+ chDbgCheck((mmcp != NULL) && (config != NULL), "mmcStart");
+
+ chSysLock();
+ chDbgAssert((mmcp->mmc_state == MMC_STOP) || (mmcp->mmc_state == MMC_READY),
+ "mmcStart(), #1",
+ "invalid state");
+ mmcp->mmc_config = config;
+ mmcp->mmc_state = MMC_READY;
+ chSysUnlock();
+}
+
+/**
+ * @brief Deactivates the MMC peripheral.
+ *
+ * @param[in] mmcp pointer to the @p MMCDriver object
+ */
+void mmcStop(MMCDriver *mmcp) {
+
+ chDbgCheck(mmcp != NULL, "mmcStop");
+
+ chSysLock();
+ chDbgAssert((mmcp->mmc_state == MMC_STOP) || (mmcp->mmc_state == MMC_READY),
+ "mmcStop(), #1",
+ "invalid state");
+ mmcp->mmc_state = MMC_STOP;
+ chSysUnlock();
+}
+
+/** @} */
diff --git a/os/io/mmc_spi.h b/os/io/mmc_spi.h new file mode 100644 index 000000000..258962f6f --- /dev/null +++ b/os/io/mmc_spi.h @@ -0,0 +1,102 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2007 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 mmc_spi.h
+ * @brief MMC over SPI driver header
+ * @addtogroup MMC_SPI
+ * @{
+ */
+
+#ifndef _MMC_SPI_H_
+#define _MMC_SPI_H_
+
+/**
+ * @brief Driver state machine possible states.
+ */
+typedef enum {
+ MMC_UNINIT = 0, /**< @brief Not initialized. */
+ MMC_STOP = 1, /**< @brief Stopped. */
+ MMC_READY = 2 /**< @brief Ready. */
+} mmcstate_t;
+
+/**
+ * @brief Driver configuration structure.
+ */
+typedef struct {
+
+} MMCConfig;
+
+/**
+ * @brief Structure representing a MMC driver.
+ */
+typedef struct {
+ /**
+ * @brief Driver state.
+ */
+ mmcstate_t mmc_state;
+ /**
+ * @brief Current configuration data.
+ */
+ const MMCConfig *mmc_config;
+ /**
+ * @brief SPI driver associated to this MMC driver. + */
+ SPIDriver *mmc_spip;
+ /**
+ * @brief SPI low speed configuration used during initialization. + */
+ const SPIConfig *mmc_lscfg;
+ /**
+ * @brief SPI high speed configuration used during transfers. + */
+ const SPIConfig *mmc_hscfg;
+ /**
+ * @brief Write protect status query function. + */
+ mmcquery_t mmc_is_protected;
+ /**
+ * @brief Insertion status query function.
+ */
+ mmcquery_t mmc_is_inserted;
+} MMCDriver;
+
+/**
+ * @brief Function used to query some hardware status bits.
+ * + * @return The status. + */
+typedef bool_t (*mmcquery_t)(void);
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void mmcInit(void);
+ void mmcObjectInit(MMCDriver *mmcp, SPIDriver *spip,
+ const SPIConfig *lscfg, const SPIConfig *hscfg,
+ mmcquery_t is_protected, mmcquery_t is_inserted);
+ void mmcStart(MMCDriver *mmcp, const MMCConfig *config);
+ void mmcStop(MMCDriver *mmcp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _MMC_SPI_H_ */
+
+/** @} */
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