git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4048 35acf78f-673a-0410-8e92-d51de3d6d3f4
gdisirio
parent
3534921f05
commit
4c86c8a06a
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@ -39,14 +39,161 @@
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @name Configuration options
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* @{
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*/
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/**
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* @brief I2S2 driver enable switch.
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* @details If set to @p TRUE the support for I2S2 is included.
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* @note The default is @p TRUE.
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*/
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#if !defined(STM32_I2S_USE_I2S2) || defined(__DOXYGEN__)
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#define STM32_I2S_USE_I2S2 TRUE
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#endif
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/**
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* @brief I2S3 driver enable switch.
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* @details If set to @p TRUE the support for I2S3 is included.
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* @note The default is @p TRUE.
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*/
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#if !defined(STM32_I2S_USE_I2S3) || defined(__DOXYGEN__)
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#define STM32_I2S_USE_I2S3 TRUE
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#endif
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/**
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* @brief I2S2 interrupt priority level setting.
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*/
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#if !defined(STM32_I2S_I2S2_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_I2S_I2S2_IRQ_PRIORITY 10
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#endif
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/**
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* @brief I2S3 interrupt priority level setting.
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*/
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#if !defined(STM32_I2S_I2S3_IRQ_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_I2S_I2S3_IRQ_PRIORITY 10
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#endif
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/**
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* @brief I2S2 DMA priority (0..3|lowest..highest).
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*/
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#if !defined(STM32_I2S_I2S2_DMA_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_I2S_I2S2_DMA_PRIORITY 1
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#endif
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/**
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* @brief I2S3 DMA priority (0..3|lowest..highest).
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*/
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#if !defined(STM32_I2S_I2S2_DMA_PRIORITY) || defined(__DOXYGEN__)
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#define STM32_I2S_I2S2_DMA_PRIORITY 1
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#endif
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/**
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* @brief I2S DMA error hook.
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*/
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#if !defined(STM32_I2S_DMA_ERROR_HOOK) || defined(__DOXYGEN__)
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#define STM32_I2S_DMA_ERROR_HOOK(i2sp) chSysHalt()
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#endif
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#if STM32_ADVANCED_DMA || defined(__DOXYGEN__)
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/**
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* @brief DMA stream used for I2S2 RX operations.
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* @note This option is only available on platforms with enhanced DMA.
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*/
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#if !defined(STM32_I2S_I2S2_RX_DMA_STREAM) || defined(__DOXYGEN__)
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#define STM32_I2S_I2S2_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 0)
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#endif
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/**
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* @brief DMA stream used for I2S2 TX operations.
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* @note This option is only available on platforms with enhanced DMA.
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*/
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#if !defined(STM32_I2S_I2S2_TX_DMA_STREAM) || defined(__DOXYGEN__)
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#define STM32_I2S_I2S2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 4)
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#endif
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/**
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* @brief DMA stream used for I2S3 RX operations.
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* @note This option is only available on platforms with enhanced DMA.
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*/
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#if !defined(STM32_I2S_I2S3_RX_DMA_STREAM) || defined(__DOXYGEN__)
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#define STM32_I2S_I2S3_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 0)
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#endif
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/**
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* @brief DMA stream used for I2S3 TX operations.
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* @note This option is only available on platforms with enhanced DMA.
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*/
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#if !defined(STM32_I2S_I2S3_TX_DMA_STREAM) || defined(__DOXYGEN__)
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#define STM32_I2S_I2S3_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 7)
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#endif
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#else /* !STM32_ADVANCED_DMA */
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/* Fixed streams for platforms using the old DMA peripheral, the values are
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valid for both STM32F1xx and STM32L1xx.*/
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#define STM32_I2S_I2S2_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 4)
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#define STM32_I2S_I2S2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 5)
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#define STM32_I2S_I2S3_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 1)
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#define STM32_I2S_I2S3_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 2)
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#endif /* !STM32_ADVANCED_DMA */
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/** @} */
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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#if STM32_I2S_USE_I2S2 && !STM32_HAS_I2S2
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#error "I2S2 not present in the selected device"
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#endif
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#if STM32_I2S_USE_I2S3 && !STM32_HAS_I2S3
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#error "I2S3 not present in the selected device"
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#endif
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#if !STM32_I2S_USE_I2S2 && !STM32_I2S_USE_I2S3
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#error "I2S driver activated but no I2S peripheral assigned"
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#endif
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#if STM32_I2S_USE_I2S2 && \
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!STM32_DMA_IS_VALID_ID(STM32_I2S_I2S2_RX_DMA_STREAM, STM32_I2S2_RX_DMA_MSK)
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#error "invalid DMA stream associated to I2S2 RX"
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#endif
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#if STM32_I2S_USE_I2S2 && \
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!STM32_DMA_IS_VALID_ID(STM32_I2S_I2S2_TX_DMA_STREAM, STM32_I2S2_TX_DMA_MSK)
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#error "invalid DMA stream associated to I2S2 TX"
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#endif
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#if STM32_I2S_USE_I2S3 && \
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!STM32_DMA_IS_VALID_ID(STM32_I2S_I2S3_RX_DMA_STREAM, STM32_I2S3_RX_DMA_MSK)
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#error "invalid DMA stream associated to I2S3 RX"
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#endif
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#if STM32_I2S_USE_I2S3 && \
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!STM32_DMA_IS_VALID_ID(STM32_I2S_I2S3_TX_DMA_STREAM, STM32_I2S3_TX_DMA_MSK)
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#error "invalid DMA stream associated to I2S3 TX"
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#endif
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#if !defined(STM32_DMA_REQUIRED)
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#define STM32_DMA_REQUIRED
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#endif
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief I2S mode type.
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*/
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typedef enum {
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i2s_mode_master = 0, /**< Master mode. */
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i2s_mode_slave = 1 /**< Slave mode. */
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} i2smode_t;
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/**
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* @brief Type of a structure representing an I2S driver.
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*/
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@ -67,14 +214,51 @@ typedef void (*i2scallback_t)(I2SDriver *i2sp, void *buffer, size_t n);
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*/
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typedef struct {
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/**
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* @brief Callback function associated to the reception or @p NULL.
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* @brief Slave mode selec
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*/
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i2scallback_t rx_cb;;
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i2smode_t mode;
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/**
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* @brief Transmission buffer pointer.
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*/
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const void *tx_buffer;
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/**
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* @brief Transmission buffer size in number of samples.
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*/
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size_t tx_size;
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/**
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* @brief Callback function associated to the transmission or @p NULL.
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*/
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i2scallback_t tx_cb;
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/**
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* @brief Receive buffer pointer.
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*/
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void *rx_buffer;
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/**
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* @brief Receive buffer size in number of samples.
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*/
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size_t rx_size;
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/**
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* @brief Callback function associated to the reception or @p NULL.
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*/
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i2scallback_t rx_cb;;
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/* End of the mandatory fields.*/
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/**
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* @brief Configuration of the I2SCFGR register.
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* @details See the STM32 reference manual, this register is used for
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* the I2S configuration, the following bits must not be
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* specified because handled directly by the driver:
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* - I2SMOD
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* - I2SE
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* - I2SCFG
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* .
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*/
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int16_t i2scfgr;
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/**
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* @brief Configuration of the I2SPR register.
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* @details See the STM32 reference manual, this register is used for
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* the I2S clock setup.
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*/
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int16_t i2spr;
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} I2SConfig;
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/**
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@ -82,14 +266,26 @@ typedef struct {
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*/
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struct I2SDriver {
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/**
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* @brief Driver state.
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* @brief Driver state.
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*/
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i2sstate_t state;
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/**
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* @brief Current configuration data.
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* @brief Current configuration data.
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*/
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const I2SConfig *config;
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/* End of the mandatory fields.*/
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/**
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* @brief Pointer to the SPIx registers block.
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*/
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SPI_TypeDef *spi;
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/**
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* @brief DMA stream.
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*/
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const stm32_dma_stream_t *dma;
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/**
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* @brief DMA mode bit mask.
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*/
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uint32_t dmamode;
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};
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/*===========================================================================*/
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@ -100,6 +296,14 @@ struct I2SDriver {
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/* External declarations. */
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/*===========================================================================*/
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#if STM32_I2S_USE_I2S2 && !defined(__DOXYGEN__)
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extern I2SDriver I2SD2;
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#endif
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#if STM32_I2S_USE_I2S3 && !defined(__DOXYGEN__)
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extern I2SDriver I2SD3;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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