diff options
Diffstat (limited to 'bsps/arm/stm32h7/hal/stm32h7xx_ll_spi.c')
| -rw-r--r-- | bsps/arm/stm32h7/hal/stm32h7xx_ll_spi.c | 738 |
1 files changed, 738 insertions, 0 deletions
diff --git a/bsps/arm/stm32h7/hal/stm32h7xx_ll_spi.c b/bsps/arm/stm32h7/hal/stm32h7xx_ll_spi.c new file mode 100644 index 0000000000..f6cceba928 --- /dev/null +++ b/bsps/arm/stm32h7/hal/stm32h7xx_ll_spi.c @@ -0,0 +1,738 @@ +/**
+ ******************************************************************************
+ * @file stm32h7xx_ll_spi.c
+ * @author MCD Application Team
+ * @brief SPI LL module driver.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+#if defined(USE_FULL_LL_DRIVER)
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32h7xx_ll_spi.h"
+#include "stm32h7xx_ll_bus.h"
+#include "stm32h7xx_ll_rcc.h"
+#ifdef GENERATOR_I2S_PRESENT
+#include "stm32h7xx_ll_rcc.h"
+#endif /* GENERATOR_I2S_PRESENT*/
+#ifdef USE_FULL_ASSERT
+#include "stm32_assert.h"
+#else
+#define assert_param(expr) ((void)0U)
+#endif
+
+/** @addtogroup STM32H7xx_LL_Driver
+ * @{
+ */
+
+#if defined(SPI1) || defined(SPI2) || defined(SPI3) || defined(SPI4) || defined(SPI5) || defined(SPI6)
+
+/** @addtogroup SPI_LL
+ * @{
+ */
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/** @addtogroup SPI_LL_Private_Macros
+ * @{
+ */
+
+#define IS_LL_SPI_MODE(__VALUE__) (((__VALUE__) == LL_SPI_MODE_MASTER) \
+ || ((__VALUE__) == LL_SPI_MODE_SLAVE))
+
+#define IS_LL_SPI_SS_IDLENESS(__VALUE__) (((__VALUE__) == LL_SPI_SS_IDLENESS_00CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_01CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_02CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_03CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_04CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_05CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_06CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_07CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_08CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_09CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_10CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_11CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_12CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_13CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_14CYCLE) \
+ || ((__VALUE__) == LL_SPI_SS_IDLENESS_15CYCLE))
+
+#define IS_LL_SPI_ID_IDLENESS(__VALUE__) (((__VALUE__) == LL_SPI_ID_IDLENESS_00CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_01CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_02CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_03CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_04CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_05CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_06CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_07CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_08CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_09CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_10CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_11CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_12CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_13CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_14CYCLE) \
+ || ((__VALUE__) == LL_SPI_ID_IDLENESS_15CYCLE))
+
+#define IS_LL_SPI_TXCRCINIT_PATTERN(__VALUE__) (((__VALUE__) == LL_SPI_TXCRCINIT_ALL_ZERO_PATTERN) \
+ || ((__VALUE__) == LL_SPI_TXCRCINIT_ALL_ONES_PATTERN))
+
+#define IS_LL_SPI_RXCRCINIT_PATTERN(__VALUE__) (((__VALUE__) == LL_SPI_RXCRCINIT_ALL_ZERO_PATTERN) \
+ || ((__VALUE__) == LL_SPI_RXCRCINIT_ALL_ONES_PATTERN))
+
+#define IS_LL_SPI_UDR_CONFIG_REGISTER(__VALUE__) (((__VALUE__) == LL_SPI_UDR_CONFIG_REGISTER_PATTERN) \
+ || ((__VALUE__) == LL_SPI_UDR_CONFIG_LAST_RECEIVED) \
+ || ((__VALUE__) == LL_SPI_UDR_CONFIG_LAST_TRANSMITTED))
+
+#define IS_LL_SPI_UDR_DETECT_BEGIN_DATA(__VALUE__) (((__VALUE__) == LL_SPI_UDR_DETECT_BEGIN_DATA_FRAME) \
+ || ((__VALUE__) == LL_SPI_UDR_DETECT_END_DATA_FRAME) \
+ || ((__VALUE__) == LL_SPI_UDR_DETECT_BEGIN_ACTIVE_NSS))
+
+#define IS_LL_SPI_PROTOCOL(__VALUE__) (((__VALUE__) == LL_SPI_PROTOCOL_MOTOROLA) \
+ || ((__VALUE__) == LL_SPI_PROTOCOL_TI))
+
+#define IS_LL_SPI_PHASE(__VALUE__) (((__VALUE__) == LL_SPI_PHASE_1EDGE) \
+ || ((__VALUE__) == LL_SPI_PHASE_2EDGE))
+
+#define IS_LL_SPI_POLARITY(__VALUE__) (((__VALUE__) == LL_SPI_POLARITY_LOW) \
+ || ((__VALUE__) == LL_SPI_POLARITY_HIGH))
+
+#define IS_LL_SPI_BAUDRATEPRESCALER(__VALUE__) (((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV2) \
+ || ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV4) \
+ || ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV8) \
+ || ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV16) \
+ || ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV32) \
+ || ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV64) \
+ || ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV128) \
+ || ((__VALUE__) == LL_SPI_BAUDRATEPRESCALER_DIV256))
+
+#define IS_LL_SPI_BITORDER(__VALUE__) (((__VALUE__) == LL_SPI_LSB_FIRST) \
+ || ((__VALUE__) == LL_SPI_MSB_FIRST))
+
+#define IS_LL_SPI_TRANSFER_DIRECTION(__VALUE__) (((__VALUE__) == LL_SPI_FULL_DUPLEX) \
+ || ((__VALUE__) == LL_SPI_SIMPLEX_TX) \
+ || ((__VALUE__) == LL_SPI_SIMPLEX_RX) \
+ || ((__VALUE__) == LL_SPI_HALF_DUPLEX_RX) \
+ || ((__VALUE__) == LL_SPI_HALF_DUPLEX_TX))
+
+#define IS_LL_SPI_DATAWIDTH(__VALUE__) (((__VALUE__) == LL_SPI_DATAWIDTH_4BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_5BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_6BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_7BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_8BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_9BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_10BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_11BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_12BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_13BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_14BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_15BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_16BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_17BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_18BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_19BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_20BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_21BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_22BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_23BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_24BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_25BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_26BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_27BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_28BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_29BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_30BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_31BIT) \
+ || ((__VALUE__) == LL_SPI_DATAWIDTH_32BIT))
+
+#define IS_LL_SPI_FIFO_TH(__VALUE__) (((__VALUE__) == LL_SPI_FIFO_TH_01DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_02DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_03DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_04DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_05DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_06DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_07DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_08DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_09DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_10DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_11DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_12DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_13DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_14DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_15DATA) \
+ || ((__VALUE__) == LL_SPI_FIFO_TH_16DATA))
+
+#define IS_LL_SPI_CRC(__VALUE__) (((__VALUE__) == LL_SPI_CRC_4BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_5BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_6BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_7BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_8BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_9BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_10BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_11BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_12BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_13BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_14BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_15BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_16BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_17BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_18BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_19BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_20BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_21BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_22BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_23BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_24BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_25BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_26BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_27BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_28BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_29BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_30BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_31BIT) \
+ || ((__VALUE__) == LL_SPI_CRC_32BIT))
+
+#define IS_LL_SPI_NSS(__VALUE__) (((__VALUE__) == LL_SPI_NSS_SOFT) \
+ || ((__VALUE__) == LL_SPI_NSS_HARD_INPUT) \
+ || ((__VALUE__) == LL_SPI_NSS_HARD_OUTPUT))
+
+#define IS_LL_SPI_RX_FIFO(__VALUE__) (((__VALUE__) == LL_SPI_RX_FIFO_0PACKET) \
+ || ((__VALUE__) == LL_SPI_RX_FIFO_1PACKET) \
+ || ((__VALUE__) == LL_SPI_RX_FIFO_2PACKET) \
+ || ((__VALUE__) == LL_SPI_RX_FIFO_3PACKET))
+
+#define IS_LL_SPI_CRCCALCULATION(__VALUE__) (((__VALUE__) == LL_SPI_CRCCALCULATION_ENABLE) \
+ || ((__VALUE__) == LL_SPI_CRCCALCULATION_DISABLE))
+
+#define IS_LL_SPI_CRC_POLYNOMIAL(__VALUE__) ((__VALUE__) >= 0x1UL)
+
+/**
+ * @}
+ */
+
+/* Private function prototypes -----------------------------------------------*/
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup SPI_LL_Exported_Functions
+ * @{
+ */
+
+/** @addtogroup SPI_LL_EF_Init
+ * @{
+ */
+
+/**
+ * @brief De-initialize the SPI registers to their default reset values.
+ * @param SPIx SPI Instance
+ * @retval An ErrorStatus enumeration value:
+ * - SUCCESS: SPI registers are de-initialized
+ * - ERROR: SPI registers are not de-initialized
+ */
+ErrorStatus LL_SPI_DeInit(SPI_TypeDef *SPIx)
+{
+ ErrorStatus status = ERROR;
+
+ /* Check the parameters */
+ assert_param(IS_SPI_ALL_INSTANCE(SPIx));
+
+#if defined(SPI1)
+ if (SPIx == SPI1)
+ {
+ /* Force reset of SPI clock */
+ LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_SPI1);
+
+ /* Release reset of SPI clock */
+ LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_SPI1);
+
+ status = SUCCESS;
+ }
+#endif /* SPI1 */
+#if defined(SPI2)
+ if (SPIx == SPI2)
+ {
+ /* Force reset of SPI clock */
+ LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_SPI2);
+
+ /* Release reset of SPI clock */
+ LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_SPI2);
+
+ status = SUCCESS;
+ }
+#endif /* SPI2 */
+#if defined(SPI3)
+ if (SPIx == SPI3)
+ {
+ /* Force reset of SPI clock */
+ LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_SPI3);
+
+ /* Release reset of SPI clock */
+ LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_SPI3);
+
+ status = SUCCESS;
+ }
+#endif /* SPI3 */
+#if defined(SPI4)
+ if (SPIx == SPI4)
+ {
+ /* Force reset of SPI clock */
+ LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_SPI4);
+
+ /* Release reset of SPI clock */
+ LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_SPI4);
+
+ status = SUCCESS;
+ }
+#endif /* SPI4 */
+#if defined(SPI5)
+ if (SPIx == SPI5)
+ {
+ /* Force reset of SPI clock */
+ LL_APB2_GRP1_ForceReset(LL_APB2_GRP1_PERIPH_SPI5);
+
+ /* Release reset of SPI clock */
+ LL_APB2_GRP1_ReleaseReset(LL_APB2_GRP1_PERIPH_SPI5);
+
+ status = SUCCESS;
+ }
+#endif /* SPI5 */
+#if defined(SPI6)
+ if (SPIx == SPI6)
+ {
+ /* Force reset of SPI clock */
+ LL_APB4_GRP1_ForceReset(LL_APB4_GRP1_PERIPH_SPI6);
+
+ /* Release reset of SPI clock */
+ LL_APB4_GRP1_ReleaseReset(LL_APB4_GRP1_PERIPH_SPI6);
+
+ status = SUCCESS;
+ }
+#endif /* SPI6 */
+
+ return status;
+}
+
+/**
+ * @brief Initialize the SPI registers according to the specified parameters in SPI_InitStruct.
+ * @note As some bits in SPI configuration registers can only be written when the SPI is disabled (SPI_CR1_SPE bit =0),
+ * SPI IP should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
+ * @param SPIx SPI Instance
+ * @param SPI_InitStruct pointer to a @ref LL_SPI_InitTypeDef structure
+ * @retval An ErrorStatus enumeration value. (Return always SUCCESS)
+ */
+ErrorStatus LL_SPI_Init(SPI_TypeDef *SPIx, LL_SPI_InitTypeDef *SPI_InitStruct)
+{
+ ErrorStatus status = ERROR;
+ uint32_t tmp_nss;
+ uint32_t tmp_mode;
+
+ /* Check the SPI Instance SPIx*/
+ assert_param(IS_SPI_ALL_INSTANCE(SPIx));
+
+ /* Check the SPI parameters from SPI_InitStruct*/
+ assert_param(IS_LL_SPI_TRANSFER_DIRECTION(SPI_InitStruct->TransferDirection));
+ assert_param(IS_LL_SPI_MODE(SPI_InitStruct->Mode));
+ assert_param(IS_LL_SPI_DATAWIDTH(SPI_InitStruct->DataWidth));
+ assert_param(IS_LL_SPI_POLARITY(SPI_InitStruct->ClockPolarity));
+ assert_param(IS_LL_SPI_PHASE(SPI_InitStruct->ClockPhase));
+ assert_param(IS_LL_SPI_NSS(SPI_InitStruct->NSS));
+ assert_param(IS_LL_SPI_BAUDRATEPRESCALER(SPI_InitStruct->BaudRate));
+ assert_param(IS_LL_SPI_BITORDER(SPI_InitStruct->BitOrder));
+ assert_param(IS_LL_SPI_CRCCALCULATION(SPI_InitStruct->CRCCalculation));
+
+ if (LL_SPI_IsEnabled(SPIx) == 0x00000000UL)
+ {
+ /*---------------------------- SPIx CFG1 Configuration ------------------------
+ * Configure SPIx CFG1 with parameters:
+ * - Master Baud Rate : SPI_CFG1_MBR[2:0] bits
+ * - CRC Computation Enable : SPI_CFG1_CRCEN bit
+ * - Length of data frame : SPI_CFG1_DSIZE[4:0] bits
+ */
+ MODIFY_REG(SPIx->CFG1, SPI_CFG1_MBR | SPI_CFG1_CRCEN | SPI_CFG1_DSIZE,
+ SPI_InitStruct->BaudRate | SPI_InitStruct->CRCCalculation | SPI_InitStruct->DataWidth);
+
+ tmp_nss = SPI_InitStruct->NSS;
+ tmp_mode = SPI_InitStruct->Mode;
+
+ /* Checks to setup Internal SS signal level and avoid a MODF Error */
+ if ((LL_SPI_GetNSSPolarity(SPIx) == LL_SPI_NSS_POLARITY_LOW) && (tmp_nss == LL_SPI_NSS_SOFT) && (tmp_mode == LL_SPI_MODE_MASTER))
+ {
+ LL_SPI_SetInternalSSLevel(SPIx, LL_SPI_SS_LEVEL_HIGH);
+ }
+
+ /*---------------------------- SPIx CFG2 Configuration ------------------------
+ * Configure SPIx CFG2 with parameters:
+ * - NSS management : SPI_CFG2_SSM, SPI_CFG2_SSOE bits
+ * - ClockPolarity : SPI_CFG2_CPOL bit
+ * - ClockPhase : SPI_CFG2_CPHA bit
+ * - BitOrder : SPI_CFG2_LSBFRST bit
+ * - Master/Slave Mode : SPI_CFG2_MASTER bit
+ * - SPI Mode : SPI_CFG2_COMM[1:0] bits
+ */
+ MODIFY_REG(SPIx->CFG2, SPI_CFG2_SSM | SPI_CFG2_SSOE |
+ SPI_CFG2_CPOL | SPI_CFG2_CPHA |
+ SPI_CFG2_LSBFRST | SPI_CFG2_MASTER | SPI_CFG2_COMM,
+ SPI_InitStruct->NSS | SPI_InitStruct->ClockPolarity |
+ SPI_InitStruct->ClockPhase | SPI_InitStruct->BitOrder |
+ SPI_InitStruct->Mode | (SPI_InitStruct->TransferDirection & SPI_CFG2_COMM));
+
+ /*---------------------------- SPIx CR1 Configuration ------------------------
+ * Configure SPIx CR1 with parameter:
+ * - Half Duplex Direction : SPI_CR1_HDDIR bit
+ */
+ MODIFY_REG(SPIx->CR1, SPI_CR1_HDDIR, SPI_InitStruct->TransferDirection & SPI_CR1_HDDIR);
+
+ /*---------------------------- SPIx CRCPOLY Configuration ----------------------
+ * Configure SPIx CRCPOLY with parameter:
+ * - CRCPoly : CRCPOLY[31:0] bits
+ */
+ if (SPI_InitStruct->CRCCalculation == LL_SPI_CRCCALCULATION_ENABLE)
+ {
+ assert_param(IS_LL_SPI_CRC_POLYNOMIAL(SPI_InitStruct->CRCPoly));
+ LL_SPI_SetCRCPolynomial(SPIx, SPI_InitStruct->CRCPoly);
+ }
+
+ /* Activate the SPI mode (Reset I2SMOD bit in I2SCFGR register) */
+ CLEAR_BIT(SPIx->I2SCFGR, SPI_I2SCFGR_I2SMOD);
+
+ status = SUCCESS;
+ }
+
+ return status;
+}
+
+/**
+ * @brief Set each @ref LL_SPI_InitTypeDef field to default value.
+ * @param SPI_InitStruct pointer to a @ref LL_SPI_InitTypeDef structure
+ * whose fields will be set to default values.
+ * @retval None
+ */
+void LL_SPI_StructInit(LL_SPI_InitTypeDef *SPI_InitStruct)
+{
+ /* Set SPI_InitStruct fields to default values */
+ SPI_InitStruct->TransferDirection = LL_SPI_FULL_DUPLEX;
+ SPI_InitStruct->Mode = LL_SPI_MODE_SLAVE;
+ SPI_InitStruct->DataWidth = LL_SPI_DATAWIDTH_8BIT;
+ SPI_InitStruct->ClockPolarity = LL_SPI_POLARITY_LOW;
+ SPI_InitStruct->ClockPhase = LL_SPI_PHASE_1EDGE;
+ SPI_InitStruct->NSS = LL_SPI_NSS_HARD_INPUT;
+ SPI_InitStruct->BaudRate = LL_SPI_BAUDRATEPRESCALER_DIV2;
+ SPI_InitStruct->BitOrder = LL_SPI_MSB_FIRST;
+ SPI_InitStruct->CRCCalculation = LL_SPI_CRCCALCULATION_DISABLE;
+ SPI_InitStruct->CRCPoly = 7UL;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup I2S_LL
+ * @{
+ */
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/** @defgroup I2S_LL_Private_Constants I2S Private Constants
+ * @{
+ */
+/* I2S registers Masks */
+#define I2S_I2SCFGR_CLEAR_MASK (SPI_I2SCFGR_CHLEN | SPI_I2SCFGR_DATLEN | \
+ SPI_I2SCFGR_DATFMT | SPI_I2SCFGR_CKPOL | \
+ SPI_I2SCFGR_I2SSTD | SPI_I2SCFGR_MCKOE | \
+ SPI_I2SCFGR_I2SCFG | SPI_I2SCFGR_I2SMOD )
+
+/**
+ * @}
+ */
+/* Private macros ------------------------------------------------------------*/
+/** @defgroup I2S_LL_Private_Macros I2S Private Macros
+ * @{
+ */
+
+#define IS_LL_I2S_DATAFORMAT(__VALUE__) (((__VALUE__) == LL_I2S_DATAFORMAT_16B) \
+ || ((__VALUE__) == LL_I2S_DATAFORMAT_16B_EXTENDED) \
+ || ((__VALUE__) == LL_I2S_DATAFORMAT_24B) \
+ || ((__VALUE__) == LL_I2S_DATAFORMAT_24B_LEFT_ALIGNED) \
+ || ((__VALUE__) == LL_I2S_DATAFORMAT_32B))
+
+#define IS_LL_I2S_CHANNEL_LENGTH_TYPE (__VALUE__) (((__VALUE__) == LL_I2S_SLAVE_VARIABLE_CH_LENGTH) \
+ || ((__VALUE__) == LL_I2S_SLAVE_FIXED_CH_LENGTH))
+
+#define IS_LL_I2S_CKPOL(__VALUE__) (((__VALUE__) == LL_I2S_POLARITY_LOW) \
+ || ((__VALUE__) == LL_I2S_POLARITY_HIGH))
+
+#define IS_LL_I2S_STANDARD(__VALUE__) (((__VALUE__) == LL_I2S_STANDARD_PHILIPS) \
+ || ((__VALUE__) == LL_I2S_STANDARD_MSB) \
+ || ((__VALUE__) == LL_I2S_STANDARD_LSB) \
+ || ((__VALUE__) == LL_I2S_STANDARD_PCM_SHORT) \
+ || ((__VALUE__) == LL_I2S_STANDARD_PCM_LONG))
+
+#define IS_LL_I2S_MODE(__VALUE__) (((__VALUE__) == LL_I2S_MODE_SLAVE_TX) \
+ || ((__VALUE__) == LL_I2S_MODE_SLAVE_RX) \
+ || ((__VALUE__) == LL_I2S_MODE_SLAVE_FULL_DUPLEX) \
+ || ((__VALUE__) == LL_I2S_MODE_MASTER_TX) \
+ || ((__VALUE__) == LL_I2S_MODE_MASTER_RX) \
+ || ((__VALUE__) == LL_I2S_MODE_MASTER_FULL_DUPLEX))
+
+#define IS_LL_I2S_MCLK_OUTPUT(__VALUE__) (((__VALUE__) == LL_I2S_MCLK_OUTPUT_ENABLE) \
+ || ((__VALUE__) == LL_I2S_MCLK_OUTPUT_DISABLE))
+
+#define IS_LL_I2S_AUDIO_FREQ(__VALUE__) ((((__VALUE__) >= LL_I2S_AUDIOFREQ_8K) \
+ && ((__VALUE__) <= LL_I2S_AUDIOFREQ_192K)) \
+ || ((__VALUE__) == LL_I2S_AUDIOFREQ_DEFAULT))
+
+#define IS_LL_I2S_PRESCALER_LINEAR(__VALUE__) ((__VALUE__) <= 0xFFUL)
+
+#define IS_LL_I2S_PRESCALER_PARITY(__VALUE__) (((__VALUE__) == LL_I2S_PRESCALER_PARITY_EVEN) \
+ || ((__VALUE__) == LL_I2S_PRESCALER_PARITY_ODD))
+
+#define IS_LL_I2S_FIFO_TH (__VALUE__) (((__VALUE__) == LL_I2S_LL_I2S_FIFO_TH_01DATA) \
+ || ((__VALUE__) == LL_I2S_LL_I2S_FIFO_TH_02DATA) \
+ || ((__VALUE__) == LL_I2S_LL_I2S_FIFO_TH_03DATA) \
+ || ((__VALUE__) == LL_I2S_LL_I2S_FIFO_TH_04DATA) \
+ || ((__VALUE__) == LL_I2S_LL_I2S_FIFO_TH_05DATA) \
+ || ((__VALUE__) == LL_I2S_LL_I2S_FIFO_TH_06DATA) \
+ || ((__VALUE__) == LL_I2S_LL_I2S_FIFO_TH_07DATA) \
+ || ((__VALUE__) == LL_I2S_LL_I2S_FIFO_TH_08DATA))
+
+#define IS_LL_I2S_BIT_ORDER(__VALUE__) (((__VALUE__) == LL_I2S_LSB_FIRST) \
+ || ((__VALUE__) == LL_I2S_MSB_FIRST))
+/**
+ * @}
+ */
+
+/* Private function prototypes -----------------------------------------------*/
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup I2S_LL_Exported_Functions
+ * @{
+ */
+
+/** @addtogroup I2S_LL_EF_Init
+ * @{
+ */
+
+/**
+ * @brief De-initialize the SPI/I2S registers to their default reset values.
+ * @param SPIx SPI Instance
+ * @retval An ErrorStatus enumeration value:
+ * - SUCCESS: SPI registers are de-initialized
+ * - ERROR: SPI registers are not de-initialized
+ */
+ErrorStatus LL_I2S_DeInit(SPI_TypeDef *SPIx)
+{
+ return LL_SPI_DeInit(SPIx);
+}
+
+/**
+ * @brief Initializes the SPI/I2S registers according to the specified parameters in I2S_InitStruct.
+ * @note As some bits in I2S configuration registers can only be written when the SPI is disabled (SPI_CR1_SPE bit =0),
+ * SPI IP should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
+ * @note I2S (SPI) source clock must be ready before calling this function. Otherwise will results in wrong programming.
+ * @param SPIx SPI Instance
+ * @param I2S_InitStruct pointer to a @ref LL_I2S_InitTypeDef structure
+ * @retval An ErrorStatus enumeration value:
+ * - SUCCESS: SPI registers are Initialized
+ * - ERROR: SPI registers are not Initialized
+ */
+ErrorStatus LL_I2S_Init(SPI_TypeDef *SPIx, LL_I2S_InitTypeDef *I2S_InitStruct)
+{
+ uint32_t i2sdiv = 0UL, i2sodd = 0UL, packetlength = 1UL, ispcm = 0UL;
+ uint32_t tmp;
+ uint32_t sourceclock;
+ ErrorStatus status = ERROR;
+
+ /* Check the I2S parameters */
+ assert_param(IS_I2S_ALL_INSTANCE(SPIx));
+ assert_param(IS_LL_I2S_MODE(I2S_InitStruct->Mode));
+ assert_param(IS_LL_I2S_STANDARD(I2S_InitStruct->Standard));
+ assert_param(IS_LL_I2S_DATAFORMAT(I2S_InitStruct->DataFormat));
+ assert_param(IS_LL_I2S_MCLK_OUTPUT(I2S_InitStruct->MCLKOutput));
+ assert_param(IS_LL_I2S_AUDIO_FREQ(I2S_InitStruct->AudioFreq));
+ assert_param(IS_LL_I2S_CKPOL(I2S_InitStruct->ClockPolarity));
+
+ /* Check that SPE bit is set to 0 in order to be sure that SPI/I2S block is disabled.
+ * In this case, it is useless to check if the I2SMOD bit is set to 0 because
+ * this bit I2SMOD only serves to select the desired mode.
+ */
+ if (LL_SPI_IsEnabled(SPIx) == 0x00000000UL)
+ {
+ /*---------------------------- SPIx I2SCFGR Configuration --------------------
+ * Configure SPIx I2SCFGR with parameters:
+ * - Mode : SPI_I2SCFGR_I2SCFG[2:0] bits
+ * - Standard : SPI_I2SCFGR_I2SSTD[1:0] and SPI_I2SCFGR_PCMSYNC bits
+ * - DataFormat : SPI_I2SCFGR_CHLEN, SPI_I2SCFGR_DATFMT and SPI_I2SCFGR_DATLEN[1:0] bits
+ * - ClockPolarity : SPI_I2SCFGR_CKPOL bit
+ * - MCLKOutput : SPI_I2SPR_MCKOE bit
+ * - I2S mode : SPI_I2SCFGR_I2SMOD bit
+ */
+
+ /* Write to SPIx I2SCFGR */
+ MODIFY_REG(SPIx->I2SCFGR,
+ I2S_I2SCFGR_CLEAR_MASK,
+ I2S_InitStruct->Mode | I2S_InitStruct->Standard |
+ I2S_InitStruct->DataFormat | I2S_InitStruct->ClockPolarity |
+ I2S_InitStruct->MCLKOutput | SPI_I2SCFGR_I2SMOD);
+
+ /*---------------------------- SPIx I2SCFGR Configuration ----------------------
+ * Configure SPIx I2SCFGR with parameters:
+ * - AudioFreq : SPI_I2SCFGR_I2SDIV[7:0] and SPI_I2SCFGR_ODD bits
+ */
+
+ /* If the requested audio frequency is not the default, compute the prescaler (i2sodd, i2sdiv)
+ * else, default values are used: i2sodd = 0U, i2sdiv = 0U.
+ */
+ if (I2S_InitStruct->AudioFreq != LL_I2S_AUDIOFREQ_DEFAULT)
+ {
+ /* Check the frame length (For the Prescaler computing)
+ * Default value: LL_I2S_DATAFORMAT_16B (packetlength = 1U).
+ */
+ if (I2S_InitStruct->DataFormat != LL_I2S_DATAFORMAT_16B)
+ {
+ /* Packet length is 32 bits */
+ packetlength = 2UL;
+ }
+
+ /* Check if PCM standard is used */
+ if ((I2S_InitStruct->Standard == LL_I2S_STANDARD_PCM_SHORT) ||
+ (I2S_InitStruct->Standard == LL_I2S_STANDARD_PCM_LONG))
+ {
+ ispcm = 1UL;
+ }
+
+ /* Get the I2S (SPI) source clock value */
+#if defined (SPI_SPI6I2S_SUPPORT)
+ if (SPIx == SPI6)
+ {
+ sourceclock = LL_RCC_GetSPIClockFreq(LL_RCC_SPI6_CLKSOURCE);
+ }
+ else
+ {
+ sourceclock = LL_RCC_GetSPIClockFreq(LL_RCC_SPI123_CLKSOURCE);
+ }
+#else
+ sourceclock = LL_RCC_GetSPIClockFreq(LL_RCC_SPI123_CLKSOURCE);
+#endif
+
+ /* Compute the Real divider depending on the MCLK output state with a fixed point */
+ if (I2S_InitStruct->MCLKOutput == LL_I2S_MCLK_OUTPUT_ENABLE)
+ {
+ /* MCLK output is enabled */
+ tmp = (((sourceclock / (256UL >> ispcm)) * 16UL) / I2S_InitStruct->AudioFreq) + 8UL;
+ }
+ else
+ {
+ /* MCLK output is disabled */
+ tmp = (((sourceclock / ((32UL >> ispcm) * packetlength)) * 16UL) / I2S_InitStruct->AudioFreq) + 8UL;
+ }
+
+ /* Remove the fixed point */
+ tmp = tmp / 16UL;
+
+ /* Check the parity of the divider */
+ i2sodd = tmp & 0x1UL;
+
+ /* Compute the i2sdiv prescaler */
+ i2sdiv = tmp / 2UL;
+ }
+
+ /* Test if the obtain values are forbiden or out of range */
+ if (((i2sodd == 1UL) && (i2sdiv == 1UL)) || (i2sdiv > 0xFFUL))
+ {
+ /* Set the default values */
+ i2sdiv = 0UL;
+ i2sodd = 0UL;
+ }
+
+ /* Write to SPIx I2SCFGR register the computed value */
+ MODIFY_REG(SPIx->I2SCFGR,
+ SPI_I2SCFGR_ODD | SPI_I2SCFGR_I2SDIV,
+ (i2sodd << SPI_I2SCFGR_ODD_Pos) | (i2sdiv << SPI_I2SCFGR_I2SDIV_Pos));
+
+ status = SUCCESS;
+ }
+
+ return status;
+}
+
+/**
+ * @brief Set each @ref LL_I2S_InitTypeDef field to default value.
+ * @param I2S_InitStruct pointer to a @ref LL_I2S_InitTypeDef structure
+ * whose fields will be set to default values.
+ * @retval None
+ */
+void LL_I2S_StructInit(LL_I2S_InitTypeDef *I2S_InitStruct)
+{
+ /*--------------- Reset I2S init structure parameters values -----------------*/
+ I2S_InitStruct->Mode = LL_I2S_MODE_SLAVE_TX;
+ I2S_InitStruct->Standard = LL_I2S_STANDARD_PHILIPS;
+ I2S_InitStruct->DataFormat = LL_I2S_DATAFORMAT_16B;
+ I2S_InitStruct->MCLKOutput = LL_I2S_MCLK_OUTPUT_DISABLE;
+ I2S_InitStruct->AudioFreq = LL_I2S_AUDIOFREQ_DEFAULT;
+ I2S_InitStruct->ClockPolarity = LL_I2S_POLARITY_LOW;
+}
+
+/**
+ * @brief Set linear and parity prescaler.
+ * @note To calculate value of PrescalerLinear(I2SDIV[7:0] bits) and PrescalerParity(ODD bit)\n
+ * Check Audio frequency table and formulas inside Reference Manual (SPI/I2S).
+ * @param SPIx SPI Instance
+ * @param PrescalerLinear Value between Min_Data=0x00 and Max_Data=0xFF
+ * @note PrescalerLinear '1' is not authorized with parity LL_I2S_PRESCALER_PARITY_ODD
+ * @param PrescalerParity This parameter can be one of the following values:
+ * @arg @ref LL_I2S_PRESCALER_PARITY_EVEN
+ * @arg @ref LL_I2S_PRESCALER_PARITY_ODD
+ * @retval None
+ */
+void LL_I2S_ConfigPrescaler(SPI_TypeDef *SPIx, uint32_t PrescalerLinear, uint32_t PrescalerParity)
+{
+ /* Check the I2S parameters */
+ assert_param(IS_I2S_ALL_INSTANCE(SPIx));
+ assert_param(IS_LL_I2S_PRESCALER_LINEAR(PrescalerLinear));
+ assert_param(IS_LL_I2S_PRESCALER_PARITY(PrescalerParity));
+
+ /* Write to SPIx I2SPR */
+ MODIFY_REG(SPIx->I2SCFGR, SPI_I2SCFGR_I2SDIV | SPI_I2SCFGR_ODD, (PrescalerLinear << SPI_I2SCFGR_I2SDIV_Pos) |
+ (PrescalerParity << SPI_I2SCFGR_ODD_Pos));
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* defined(SPI1) || defined(SPI2) || defined(SPI3) || defined(SPI4) || defined(SPI5) || defined(SPI6) */
+
+/**
+ * @}
+ */
+#endif /* USE_FULL_LL_DRIVER */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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