diff options
| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-02-16 09:12:08 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-02-16 09:12:08 +0000 |
| commit | 27261ab8a6ade925246c1dec80ead3f4a9c651c2 (patch) | |
| tree | 02076fa154699192b1c741b9104572f4e6596b37 /os/hal/ports/STM32/LLD/SPIv1 | |
| parent | 1bdcf39d7b55642ae26bc32ffed1fdc36cfc9d56 (diff) | |
| download | ChibiOS-27261ab8a6ade925246c1dec80ead3f4a9c651c2.tar.gz ChibiOS-27261ab8a6ade925246c1dec80ead3f4a9c651c2.tar.bz2 ChibiOS-27261ab8a6ade925246c1dec80ead3f4a9c651c2.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6715 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/ports/STM32/LLD/SPIv1')
| -rw-r--r-- | os/hal/ports/STM32/LLD/SPIv1/i2s_lld.c | 228 | ||||
| -rw-r--r-- | os/hal/ports/STM32/LLD/SPIv1/i2s_lld.h | 312 | ||||
| -rw-r--r-- | os/hal/ports/STM32/LLD/SPIv1/spi_lld.h | 12 |
3 files changed, 546 insertions, 6 deletions
diff --git a/os/hal/ports/STM32/LLD/SPIv1/i2s_lld.c b/os/hal/ports/STM32/LLD/SPIv1/i2s_lld.c new file mode 100644 index 000000000..9e4924501 --- /dev/null +++ b/os/hal/ports/STM32/LLD/SPIv1/i2s_lld.c @@ -0,0 +1,228 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/**
+ * @file i2s_lld.c
+ * @brief I2S Driver subsystem low level driver source template.
+ *
+ * @addtogroup I2S
+ * @{
+ */
+
+#include "hal.h"
+
+#if HAL_USE_I2S || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/** @brief I2S2 driver identifier.*/
+#if STM32_I2S_USE_SPI2 || defined(__DOXYGEN__)
+I2SDriver I2SD2;
+#endif
+
+/** @brief I2S3 driver identifier.*/
+#if STM32_I2S_USE_SPI3 || defined(__DOXYGEN__)
+I2SDriver I2SD3;
+#endif
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Shared end-of-rx service routine.
+ *
+ * @param[in] i2sp pointer to the @p I2SDriver object
+ * @param[in] flags pre-shifted content of the ISR register
+ */
+static void i2s_lld_serve_rx_interrupt(I2SDriver *i2sp, uint32_t flags) {
+
+ /* DMA errors handling.*/
+#if defined(STM32_I2S_DMA_ERROR_HOOK)
+ if ((flags & (STM32_DMA_ISR_TEIF | STM32_DMA_ISR_DMEIF)) != 0) {
+ STM32_I2S_DMA_ERROR_HOOK(i2sp);
+ }
+#else
+ (void)flags;
+#endif
+
+ /* Stop everything.*/
+ dmaStreamDisable(i2sp->dmatx);
+ dmaStreamDisable(i2sp->dmarx);
+
+ /* Portable I2S ISR code defined in the high level driver, note, it is
+ a macro.*/
+ _i2s_isr_code(i2sp);
+}
+
+/**
+ * @brief Shared end-of-tx service routine.
+ *
+ * @param[in] i2sp pointer to the @p I2SDriver object
+ * @param[in] flags pre-shifted content of the ISR register
+ */
+static void i2s_lld_serve_tx_interrupt(I2SDriver *i2sp, uint32_t flags) {
+
+ /* DMA errors handling.*/
+#if defined(STM32_I2S_DMA_ERROR_HOOK)
+ (void)i2sp;
+ if ((flags & (STM32_DMA_ISR_TEIF | STM32_DMA_ISR_DMEIF)) != 0) {
+ STM32_I2S_DMA_ERROR_HOOK(i2sp);
+ }
+#else
+ (void)flags;
+#endif
+}
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level I2S driver initialization.
+ *
+ * @notapi
+ */
+void i2s_lld_init(void) {
+
+#if STM32_I2S_USE_SPI2
+ i2sObjectInit(&I2SD2);
+ I2SD2.spi = SPI2;
+#endif
+
+#if STM32_I2S_USE_SPI3
+ i2sObjectInit(&I2SD3);
+ I2SD3.spi = SPI3;
+#endif
+}
+
+/**
+ * @brief Configures and activates the I2S peripheral.
+ *
+ * @param[in] i2sp pointer to the @p I2SDriver object
+ *
+ * @notapi
+ */
+void i2s_lld_start(I2SDriver *i2sp) {
+
+ /* If in stopped state then enables the SPI and DMA clocks.*/
+ if (i2sp->state == I2S_STOP) {
+#if STM32_I2S_USE_SPI2
+ if (&I2SD2 == i2sp) {
+ bool b;
+ b = dmaStreamAllocate(i2sp->dmarx,
+ STM32_I2S_SPI2_IRQ_PRIORITY,
+ (stm32_dmaisr_t)i2s_lld_serve_rx_interrupt,
+ (void *)i2sp);
+ osalDbgAssert(!b, "stream already allocated");
+ b = dmaStreamAllocate(i2sp->dmatx,
+ STM32_I2S_SPI2_IRQ_PRIORITY,
+ (stm32_dmaisr_t)i2s_lld_serve_tx_interrupt,
+ (void *)i2sp);
+ osalDbgAssert(!b, "stream already allocated");
+ rccEnableSPI2(FALSE);
+ }
+#endif
+#if STM32_I2S_USE_SPI3
+ if (&I2SD3 == i2sp) {
+ bool b;
+ b = dmaStreamAllocate(i2sp->dmarx,
+ STM32_I2S_SPI3_IRQ_PRIORITY,
+ (stm32_dmaisr_t)i2s_lld_serve_rx_interrupt,
+ (void *)i2sp);
+ osalDbgAssert(!b, "stream already allocated");
+ b = dmaStreamAllocate(i2sp->dmatx,
+ STM32_I2S_SPI3_IRQ_PRIORITY,
+ (stm32_dmaisr_t)i2s_lld_serve_tx_interrupt,
+ (void *)i2sp);
+ osalDbgAssert(!b, "stream already allocated");
+ rccEnableSPI3(FALSE);
+ }
+#endif
+ }
+ /* Configuration.*/
+}
+
+/**
+ * @brief Deactivates the I2S peripheral.
+ *
+ * @param[in] i2sp pointer to the @p I2SDriver object
+ *
+ * @notapi
+ */
+void i2s_lld_stop(I2SDriver *i2sp) {
+
+ /* If in ready state then disables the SPI clock.*/
+ if (i2sp->state == I2S_READY) {
+
+ /* SPI disable.*/
+ i2sp->spi->CR1 = 0;
+ i2sp->spi->CR2 = 0;
+ dmaStreamRelease(i2sp->dmarx);
+ dmaStreamRelease(i2sp->dmatx);
+
+#if STM32_I2S_USE_SPI2
+ if (&I2SD2 == i2sp)
+ rccDisableSPI2(FALSE);
+#endif
+#if STM32_I2S_USE_SPI3
+ if (&I2SD3 == i2sp)
+ rccDisableSPI3(FALSE);
+#endif
+ }
+}
+
+/**
+ * @brief Starts a I2S data exchange.
+ *
+ * @param[in] i2sp pointer to the @p I2SDriver object
+ *
+ * @notapi
+ */
+void i2s_lld_start_exchange(I2SDriver *i2sp) {
+
+}
+
+/**
+ * @brief Stops the ongoing data exchange.
+ * @details The ongoing data exchange, if any, is stopped, if the driver
+ * was not active the function does nothing.
+ *
+ * @param[in] i2sp pointer to the @p I2SDriver object
+ *
+ * @notapi
+ */
+void i2s_lld_stop_exchange(I2SDriver *i2sp) {
+
+}
+
+#endif /* HAL_USE_I2S */
+
+/** @} */
diff --git a/os/hal/ports/STM32/LLD/SPIv1/i2s_lld.h b/os/hal/ports/STM32/LLD/SPIv1/i2s_lld.h new file mode 100644 index 000000000..a3ea2e1c4 --- /dev/null +++ b/os/hal/ports/STM32/LLD/SPIv1/i2s_lld.h @@ -0,0 +1,312 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/**
+ * @file i2s_lld.h
+ * @brief I2S Driver subsystem low level driver header template.
+ *
+ * @addtogroup I2S
+ * @{
+ */
+
+#ifndef _I2S_LLD_H_
+#define _I2S_LLD_H_
+
+#if HAL_USE_I2S || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @name Configuration options
+ * @{
+ */
+/**
+ * @brief I2S2 driver enable switch.
+ * @details If set to @p TRUE the support for I2S2 is included.
+ * @note The default is @p TRUE.
+ */
+#if !defined(STM32_I2S_USE_SPI2) || defined(__DOXYGEN__)
+#define STM32_I2S_USE_SPI2 FALSE
+#endif
+
+/**
+ * @brief I2S3 driver enable switch.
+ * @details If set to @p TRUE the support for I2S3 is included.
+ * @note The default is @p TRUE.
+ */
+#if !defined(STM32_I2S_USE_SPI3) || defined(__DOXYGEN__)
+#define STM32_I2S_USE_SPI3 FALSE
+#endif
+
+/**
+ * @brief I2S2 interrupt priority level setting.
+ */
+#if !defined(STM32_I2S_SPI2_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_I2S_SPI2_IRQ_PRIORITY 10
+#endif
+
+/**
+ * @brief I2S3 interrupt priority level setting.
+ */
+#if !defined(STM32_I2S_SPI3_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_I2S_SPI3_IRQ_PRIORITY 10
+#endif
+
+/**
+ * @brief I2S2 DMA priority (0..3|lowest..highest).
+ */
+#if !defined(STM32_I2S_SPI2_DMA_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_I2S_SPI2_DMA_PRIORITY 1
+#endif
+
+/**
+ * @brief I2S3 DMA priority (0..3|lowest..highest).
+ */
+#if !defined(STM32_I2S_SPI3_DMA_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_I2S_SPI3_DMA_PRIORITY 1
+#endif
+
+/**
+ * @brief I2S DMA error hook.
+ */
+#if !defined(STM32_I2S_DMA_ERROR_HOOK) || defined(__DOXYGEN__)
+#define STM32_I2S_DMA_ERROR_HOOK(i2sp) osalSysHalt("DMA failure")
+#endif
+/** @} */
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+#if STM32_I2S_USE_SPI2 && !STM32_HAS_SPI2
+#error "SPI2 not present in the selected device"
+#endif
+
+#if STM32_I2S_USE_SPI3 && !STM32_HAS_SPI3
+#error "SPI3 not present in the selected device"
+#endif
+
+#if !STM32_I2S_USE_SPI2 && !STM32_I2S_USE_SPI3
+#error "I2S driver activated but no SPI peripheral assigned"
+#endif
+
+
+#if STM32_I2S_USE_SPI2 && \
+ !CORTEX_IS_VALID_KERNEL_PRIORITY(STM32_I2S_SPI2_IRQ_PRIORITY)
+#error "Invalid IRQ priority assigned to SPI2"
+#endif
+
+#if STM32_I2S_USE_SPI3 && \
+ !CORTEX_IS_VALID_KERNEL_PRIORITY(STM32_I2S_SPI3_IRQ_PRIORITY)
+#error "Invalid IRQ priority assigned to SPI3"
+#endif
+
+
+#if STM32_I2S_USE_SPI2 && \
+ !STM32_DMA_IS_VALID_PRIORITY(STM32_I2S_SPI2_DMA_PRIORITY)
+#error "Invalid DMA priority assigned to SPI2"
+#endif
+
+#if STM32_I2S_USE_SPI3 && \
+ !STM32_DMA_IS_VALID_PRIORITY(STM32_I2S_SPI3_DMA_PRIORITY)
+#error "Invalid DMA priority assigned to SPI3"
+#endif
+
+
+/* The following checks are only required when there is a DMA able to
+ reassign streams to different channels.*/
+#if STM32_ADVANCED_DMA
+/* Check on the presence of the DMA streams settings in mcuconf.h.*/
+#if STM32_I2S_USE_SPI2 && (!defined(STM32_I2S_SPI2_RX_DMA_STREAM) || \
+ !defined(STM32_I2S_SPI2_TX_DMA_STREAM))
+#error "SPI2 DMA streams not defined"
+#endif
+
+#if STM32_I2S_USE_SPI3 && (!defined(STM32_I2S_SPI3_RX_DMA_STREAM) || \
+ !defined(STM32_I2S_SPI3_TX_DMA_STREAM))
+#error "SPI3 DMA streams not defined"
+#endif
+
+/* Check on the validity of the assigned DMA channels.*/
+#if STM32_I2S_USE_SPI2 && \
+ !STM32_DMA_IS_VALID_ID(STM32_I2S_SPI2_RX_DMA_STREAM, STM32_SPI2_RX_DMA_MSK)
+#error "invalid DMA stream associated to SPI2 RX"
+#endif
+
+#if STM32_I2S_USE_SPI2 && \
+ !STM32_DMA_IS_VALID_ID(STM32_I2S_SPI2_TX_DMA_STREAM, STM32_SPI2_TX_DMA_MSK)
+#error "invalid DMA stream associated to SPI2 TX"
+#endif
+
+#if STM32_I2S_USE_SPI3 && \
+ !STM32_DMA_IS_VALID_ID(STM32_I2S_SPI3_RX_DMA_STREAM, STM32_SPI3_RX_DMA_MSK)
+#error "invalid DMA stream associated to SPI3 RX"
+#endif
+
+#if STM32_I2S_USE_SPI3 && \
+ !STM32_DMA_IS_VALID_ID(STM32_I2S_SPI3_TX_DMA_STREAM, STM32_SPI3_TX_DMA_MSK)
+#error "invalid DMA stream associated to SPI3 TX"
+#endif
+#endif /* STM32_ADVANCED_DMA */
+
+#if !defined(STM32_DMA_REQUIRED)
+#define STM32_DMA_REQUIRED
+#endif
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief I2S mode type.
+ */
+typedef uint32_t i2smode_t;
+
+/**
+ * @brief Type of a structure representing an I2S driver.
+ */
+typedef struct I2SDriver I2SDriver;
+
+/**
+ * @brief I2S notification callback type.
+ *
+ * @param[in] i2sp pointer to the @p I2SDriver object
+ * @param[in] offset offset in buffers of the data to read/write
+ * @param[in] n number of samples to read/write
+ */
+typedef void (*i2scallback_t)(I2SDriver *i2sp, size_t offset, size_t n);
+
+/**
+ * @brief Driver configuration structure.
+ * @note It could be empty on some architectures.
+ */
+typedef struct {
+ /**
+ * @brief I2S mode selection.
+ */
+ i2smode_t mode;
+ /**
+ * @brief Transmission buffer pointer.
+ * @note Can be @p NULL if TX is not required.
+ */
+ const void *tx_buffer;
+ /**
+ * @brief Receive buffer pointer.
+ * @note Can be @p NULL if RX is not required.
+ */
+ void *rx_buffer;
+ /**
+ * @brief TX and RX buffers size in number of samples.
+ */
+ size_t depth;
+ /**
+ * @brief Callback function called during streaming.
+ */
+ i2scallback_t end_cb;
+ /* End of the mandatory fields.*/
+ /**
+ * @brief Configuration of the I2SCFGR register.
+ * @details See the STM32 reference manual, this register is used for
+ * the I2S configuration, the following bits must not be
+ * specified because handled directly by the driver:
+ * - I2SMOD
+ * - I2SE
+ * - I2SCFG
+ * .
+ */
+ int16_t i2scfgr;
+ /**
+ * @brief Configuration of the I2SPR register.
+ * @details See the STM32 reference manual, this register is used for
+ * the I2S clock setup.
+ */
+ int16_t i2spr;
+} I2SConfig;
+
+/**
+ * @brief Structure representing an I2S driver.
+ */
+struct I2SDriver {
+ /**
+ * @brief Driver state.
+ */
+ i2sstate_t state;
+ /**
+ * @brief Current configuration data.
+ */
+ const I2SConfig *config;
+ /* End of the mandatory fields.*/
+ /**
+ * @brief Pointer to the SPIx registers block.
+ */
+ SPI_TypeDef *spi;
+ /**
+ * @brief Receive DMA stream.
+ */
+ const stm32_dma_stream_t *dmarx;
+ /**
+ * @brief Transmit DMA stream.
+ */
+ const stm32_dma_stream_t *dmatx;
+ /**
+ * @brief RX DMA mode bit mask.
+ */
+ uint32_t rxdmamode;
+ /**
+ * @brief TX DMA mode bit mask.
+ */
+ uint32_t txdmamode;
+};
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#if STM32_I2S_USE_SPI2 && !defined(__DOXYGEN__)
+extern I2SDriver I2SD2;
+#endif
+
+#if STM32_I2S_USE_I2S3 && !defined(__DOXYGEN__)
+extern I2SDriver SPI3;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void i2s_lld_init(void);
+ void i2s_lld_start(I2SDriver *i2sp);
+ void i2s_lld_stop(I2SDriver *i2sp);
+ void i2s_lld_start_exchange(I2SDriver *i2sp);
+ void i2s_lld_stop_exchange(I2SDriver *i2sp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_I2S */
+
+#endif /* _I2S_LLD_H_ */
+
+/** @} */
diff --git a/os/hal/ports/STM32/LLD/SPIv1/spi_lld.h b/os/hal/ports/STM32/LLD/SPIv1/spi_lld.h index fe31daeff..7700c34fe 100644 --- a/os/hal/ports/STM32/LLD/SPIv1/spi_lld.h +++ b/os/hal/ports/STM32/LLD/SPIv1/spi_lld.h @@ -42,7 +42,7 @@ /**
* @brief SPI1 driver enable switch.
* @details If set to @p TRUE the support for SPI1 is included.
- * @note The default is @p TRUE.
+ * @note The default is @p FALSE.
*/
#if !defined(STM32_SPI_USE_SPI1) || defined(__DOXYGEN__)
#define STM32_SPI_USE_SPI1 FALSE
@@ -51,7 +51,7 @@ /**
* @brief SPI2 driver enable switch.
* @details If set to @p TRUE the support for SPI2 is included.
- * @note The default is @p TRUE.
+ * @note The default is @p FALSE.
*/
#if !defined(STM32_SPI_USE_SPI2) || defined(__DOXYGEN__)
#define STM32_SPI_USE_SPI2 FALSE
@@ -60,7 +60,7 @@ /**
* @brief SPI3 driver enable switch.
* @details If set to @p TRUE the support for SPI3 is included.
- * @note The default is @p TRUE.
+ * @note The default is @p FALSE.
*/
#if !defined(STM32_SPI_USE_SPI3) || defined(__DOXYGEN__)
#define STM32_SPI_USE_SPI3 FALSE
@@ -69,7 +69,7 @@ /**
* @brief SPI4 driver enable switch.
* @details If set to @p TRUE the support for SPI4 is included.
- * @note The default is @p TRUE.
+ * @note The default is @p FALSE.
*/
#if !defined(STM32_SPI_USE_SPI4) || defined(__DOXYGEN__)
#define STM32_SPI_USE_SPI4 FALSE
@@ -78,7 +78,7 @@ /**
* @brief SPI5 driver enable switch.
* @details If set to @p TRUE the support for SPI5 is included.
- * @note The default is @p TRUE.
+ * @note The default is @p FALSE.
*/
#if !defined(STM32_SPI_USE_SPI5) || defined(__DOXYGEN__)
#define STM32_SPI_USE_SPI5 FALSE
@@ -87,7 +87,7 @@ /**
* @brief SPI6 driver enable switch.
* @details If set to @p TRUE the support for SPI6 is included.
- * @note The default is @p TRUE.
+ * @note The default is @p FALSE.
*/
#if !defined(STM32_SPI_USE_SPI6) || defined(__DOXYGEN__)
#define STM32_SPI_USE_SPI6 FALSE
|