From 4c6f0969c11152825906d62c843d55aa469b394d Mon Sep 17 00:00:00 2001 From: Conor Patrick Date: Sat, 5 Jan 2019 20:58:39 -0500 Subject: [PATCH] add spi --- targets/stm32l432/lib/stm32l4xx_ll_spi.c | 307 +++++ targets/stm32l432/lib/stm32l4xx_ll_spi.h | 1436 ++++++++++++++++++++++ targets/stm32l432/src/init.c | 46 + 3 files changed, 1789 insertions(+) create mode 100644 targets/stm32l432/lib/stm32l4xx_ll_spi.c create mode 100644 targets/stm32l432/lib/stm32l4xx_ll_spi.h diff --git a/targets/stm32l432/lib/stm32l4xx_ll_spi.c b/targets/stm32l432/lib/stm32l4xx_ll_spi.c new file mode 100644 index 0000000..99e28de --- /dev/null +++ b/targets/stm32l432/lib/stm32l4xx_ll_spi.c @@ -0,0 +1,307 @@ +/** + ****************************************************************************** + * @file stm32l4xx_ll_spi.c + * @author MCD Application Team + * @brief SPI LL module driver. + ****************************************************************************** + * @attention + * + *

© COPYRIGHT(c) 2017 STMicroelectronics

+ * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ +#if defined(USE_FULL_LL_DRIVER) + +/* Includes ------------------------------------------------------------------*/ +#include "stm32l4xx_ll_spi.h" +#include "stm32l4xx_ll_bus.h" + +#ifdef USE_FULL_ASSERT +#include "stm32_assert.h" +#else +#define assert_param(expr) ((void)0U) +#endif + +/** @addtogroup STM32L4xx_LL_Driver + * @{ + */ + +#if defined (SPI1) || defined (SPI2) || defined (SPI3) + +/** @addtogroup SPI_LL + * @{ + */ + +/* Private types -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ + +/* Private constants ---------------------------------------------------------*/ +/** @defgroup SPI_LL_Private_Constants SPI Private Constants + * @{ + */ +/* SPI registers Masks */ +#define SPI_CR1_CLEAR_MASK (SPI_CR1_CPHA | SPI_CR1_CPOL | SPI_CR1_MSTR | \ + SPI_CR1_BR | SPI_CR1_LSBFIRST | SPI_CR1_SSI | \ + SPI_CR1_SSM | SPI_CR1_RXONLY | SPI_CR1_CRCL | \ + SPI_CR1_CRCNEXT | SPI_CR1_CRCEN | SPI_CR1_BIDIOE | \ + SPI_CR1_BIDIMODE) +/** + * @} + */ + +/* Private macros ------------------------------------------------------------*/ +/** @defgroup SPI_LL_Private_Macros SPI Private Macros + * @{ + */ +#define IS_LL_SPI_TRANSFER_DIRECTION(__VALUE__) (((__VALUE__) == LL_SPI_FULL_DUPLEX) \ + || ((__VALUE__) == LL_SPI_SIMPLEX_RX) \ + || ((__VALUE__) == LL_SPI_HALF_DUPLEX_RX) \ + || ((__VALUE__) == LL_SPI_HALF_DUPLEX_TX)) + +#define IS_LL_SPI_MODE(__VALUE__) (((__VALUE__) == LL_SPI_MODE_MASTER) \ + || ((__VALUE__) == LL_SPI_MODE_SLAVE)) + +#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)) + +#define IS_LL_SPI_POLARITY(__VALUE__) (((__VALUE__) == LL_SPI_POLARITY_LOW) \ + || ((__VALUE__) == LL_SPI_POLARITY_HIGH)) + +#define IS_LL_SPI_PHASE(__VALUE__) (((__VALUE__) == LL_SPI_PHASE_1EDGE) \ + || ((__VALUE__) == LL_SPI_PHASE_2EDGE)) + +#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_BAUDRATE(__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_CRCCALCULATION(__VALUE__) (((__VALUE__) == LL_SPI_CRCCALCULATION_ENABLE) \ + || ((__VALUE__) == LL_SPI_CRCCALCULATION_DISABLE)) + +#define IS_LL_SPI_CRC_POLYNOMIAL(__VALUE__) ((__VALUE__) >= 0x1U) + +/** + * @} + */ + +/* 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 */ + + 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; + + /* 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_BAUDRATE(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) == 0x00000000U) + { + /*---------------------------- SPIx CR1 Configuration ------------------------ + * Configure SPIx CR1 with parameters: + * - TransferDirection: SPI_CR1_BIDIMODE, SPI_CR1_BIDIOE and SPI_CR1_RXONLY bits + * - Master/Slave Mode: SPI_CR1_MSTR bit + * - ClockPolarity: SPI_CR1_CPOL bit + * - ClockPhase: SPI_CR1_CPHA bit + * - NSS management: SPI_CR1_SSM bit + * - BaudRate prescaler: SPI_CR1_BR[2:0] bits + * - BitOrder: SPI_CR1_LSBFIRST bit + * - CRCCalculation: SPI_CR1_CRCEN bit + */ + MODIFY_REG(SPIx->CR1, + SPI_CR1_CLEAR_MASK, + SPI_InitStruct->TransferDirection | SPI_InitStruct->Mode | + SPI_InitStruct->ClockPolarity | SPI_InitStruct->ClockPhase | + SPI_InitStruct->NSS | SPI_InitStruct->BaudRate | + SPI_InitStruct->BitOrder | SPI_InitStruct->CRCCalculation); + + /*---------------------------- SPIx CR2 Configuration ------------------------ + * Configure SPIx CR2 with parameters: + * - DataWidth: DS[3:0] bits + * - NSS management: SSOE bit + */ + MODIFY_REG(SPIx->CR2, + SPI_CR2_DS | SPI_CR2_SSOE, + SPI_InitStruct->DataWidth | (SPI_InitStruct->NSS >> 16U)); + + /*---------------------------- SPIx CRCPR Configuration ---------------------- + * Configure SPIx CRCPR with parameters: + * - CRCPoly: CRCPOLY[15:0] 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); + } + 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 = 7U; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* defined (SPI1) || defined (SPI2) || defined (SPI3) */ + +/** + * @} + */ + +#endif /* USE_FULL_LL_DRIVER */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ diff --git a/targets/stm32l432/lib/stm32l4xx_ll_spi.h b/targets/stm32l432/lib/stm32l4xx_ll_spi.h new file mode 100644 index 0000000..b5bc17a --- /dev/null +++ b/targets/stm32l432/lib/stm32l4xx_ll_spi.h @@ -0,0 +1,1436 @@ +/** + ****************************************************************************** + * @file stm32l4xx_ll_spi.h + * @author MCD Application Team + * @brief Header file of SPI LL module. + ****************************************************************************** + * @attention + * + *

© COPYRIGHT(c) 2017 STMicroelectronics

+ * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Define to prevent recursive inclusion -------------------------------------*/ +#ifndef STM32L4xx_LL_SPI_H +#define STM32L4xx_LL_SPI_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* Includes ------------------------------------------------------------------*/ +#include "stm32l4xx.h" + +/** @addtogroup STM32L4xx_LL_Driver + * @{ + */ + +#if defined (SPI1) || defined (SPI2) || defined (SPI3) + +/** @defgroup SPI_LL SPI + * @{ + */ + +/* Private types -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private macros ------------------------------------------------------------*/ + +/* Exported types ------------------------------------------------------------*/ +#if defined(USE_FULL_LL_DRIVER) +/** @defgroup SPI_LL_ES_INIT SPI Exported Init structure + * @{ + */ + +/** + * @brief SPI Init structures definition + */ +typedef struct +{ + uint32_t TransferDirection; /*!< Specifies the SPI unidirectional or bidirectional data mode. + This parameter can be a value of @ref SPI_LL_EC_TRANSFER_MODE. + + This feature can be modified afterwards using unitary function @ref LL_SPI_SetTransferDirection().*/ + + uint32_t Mode; /*!< Specifies the SPI mode (Master/Slave). + This parameter can be a value of @ref SPI_LL_EC_MODE. + + This feature can be modified afterwards using unitary function @ref LL_SPI_SetMode().*/ + + uint32_t DataWidth; /*!< Specifies the SPI data width. + This parameter can be a value of @ref SPI_LL_EC_DATAWIDTH. + + This feature can be modified afterwards using unitary function @ref LL_SPI_SetDataWidth().*/ + + uint32_t ClockPolarity; /*!< Specifies the serial clock steady state. + This parameter can be a value of @ref SPI_LL_EC_POLARITY. + + This feature can be modified afterwards using unitary function @ref LL_SPI_SetClockPolarity().*/ + + uint32_t ClockPhase; /*!< Specifies the clock active edge for the bit capture. + This parameter can be a value of @ref SPI_LL_EC_PHASE. + + This feature can be modified afterwards using unitary function @ref LL_SPI_SetClockPhase().*/ + + uint32_t NSS; /*!< Specifies whether the NSS signal is managed by hardware (NSS pin) or by software using the SSI bit. + This parameter can be a value of @ref SPI_LL_EC_NSS_MODE. + + This feature can be modified afterwards using unitary function @ref LL_SPI_SetNSSMode().*/ + + uint32_t BaudRate; /*!< Specifies the BaudRate prescaler value which will be used to configure the transmit and receive SCK clock. + This parameter can be a value of @ref SPI_LL_EC_BAUDRATEPRESCALER. + @note The communication clock is derived from the master clock. The slave clock does not need to be set. + + This feature can be modified afterwards using unitary function @ref LL_SPI_SetBaudRatePrescaler().*/ + + uint32_t BitOrder; /*!< Specifies whether data transfers start from MSB or LSB bit. + This parameter can be a value of @ref SPI_LL_EC_BIT_ORDER. + + This feature can be modified afterwards using unitary function @ref LL_SPI_SetTransferBitOrder().*/ + + uint32_t CRCCalculation; /*!< Specifies if the CRC calculation is enabled or not. + This parameter can be a value of @ref SPI_LL_EC_CRC_CALCULATION. + + This feature can be modified afterwards using unitary functions @ref LL_SPI_EnableCRC() and @ref LL_SPI_DisableCRC().*/ + + uint32_t CRCPoly; /*!< Specifies the polynomial used for the CRC calculation. + This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFFFF. + + This feature can be modified afterwards using unitary function @ref LL_SPI_SetCRCPolynomial().*/ + +} LL_SPI_InitTypeDef; + +/** + * @} + */ +#endif /* USE_FULL_LL_DRIVER */ + +/* Exported constants --------------------------------------------------------*/ +/** @defgroup SPI_LL_Exported_Constants SPI Exported Constants + * @{ + */ + +/** @defgroup SPI_LL_EC_GET_FLAG Get Flags Defines + * @brief Flags defines which can be used with LL_SPI_ReadReg function + * @{ + */ +#define LL_SPI_SR_RXNE SPI_SR_RXNE /*!< Rx buffer not empty flag */ +#define LL_SPI_SR_TXE SPI_SR_TXE /*!< Tx buffer empty flag */ +#define LL_SPI_SR_BSY SPI_SR_BSY /*!< Busy flag */ +#define LL_SPI_SR_CRCERR SPI_SR_CRCERR /*!< CRC error flag */ +#define LL_SPI_SR_MODF SPI_SR_MODF /*!< Mode fault flag */ +#define LL_SPI_SR_OVR SPI_SR_OVR /*!< Overrun flag */ +#define LL_SPI_SR_FRE SPI_SR_FRE /*!< TI mode frame format error flag */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_IT IT Defines + * @brief IT defines which can be used with LL_SPI_ReadReg and LL_SPI_WriteReg functions + * @{ + */ +#define LL_SPI_CR2_RXNEIE SPI_CR2_RXNEIE /*!< Rx buffer not empty interrupt enable */ +#define LL_SPI_CR2_TXEIE SPI_CR2_TXEIE /*!< Tx buffer empty interrupt enable */ +#define LL_SPI_CR2_ERRIE SPI_CR2_ERRIE /*!< Error interrupt enable */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_MODE Operation Mode + * @{ + */ +#define LL_SPI_MODE_MASTER (SPI_CR1_MSTR | SPI_CR1_SSI) /*!< Master configuration */ +#define LL_SPI_MODE_SLAVE 0x00000000U /*!< Slave configuration */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_PROTOCOL Serial Protocol + * @{ + */ +#define LL_SPI_PROTOCOL_MOTOROLA 0x00000000U /*!< Motorola mode. Used as default value */ +#define LL_SPI_PROTOCOL_TI (SPI_CR2_FRF) /*!< TI mode */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_PHASE Clock Phase + * @{ + */ +#define LL_SPI_PHASE_1EDGE 0x00000000U /*!< First clock transition is the first data capture edge */ +#define LL_SPI_PHASE_2EDGE (SPI_CR1_CPHA) /*!< Second clock transition is the first data capture edge */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_POLARITY Clock Polarity + * @{ + */ +#define LL_SPI_POLARITY_LOW 0x00000000U /*!< Clock to 0 when idle */ +#define LL_SPI_POLARITY_HIGH (SPI_CR1_CPOL) /*!< Clock to 1 when idle */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_BAUDRATEPRESCALER Baud Rate Prescaler + * @{ + */ +#define LL_SPI_BAUDRATEPRESCALER_DIV2 0x00000000U /*!< BaudRate control equal to fPCLK/2 */ +#define LL_SPI_BAUDRATEPRESCALER_DIV4 (SPI_CR1_BR_0) /*!< BaudRate control equal to fPCLK/4 */ +#define LL_SPI_BAUDRATEPRESCALER_DIV8 (SPI_CR1_BR_1) /*!< BaudRate control equal to fPCLK/8 */ +#define LL_SPI_BAUDRATEPRESCALER_DIV16 (SPI_CR1_BR_1 | SPI_CR1_BR_0) /*!< BaudRate control equal to fPCLK/16 */ +#define LL_SPI_BAUDRATEPRESCALER_DIV32 (SPI_CR1_BR_2) /*!< BaudRate control equal to fPCLK/32 */ +#define LL_SPI_BAUDRATEPRESCALER_DIV64 (SPI_CR1_BR_2 | SPI_CR1_BR_0) /*!< BaudRate control equal to fPCLK/64 */ +#define LL_SPI_BAUDRATEPRESCALER_DIV128 (SPI_CR1_BR_2 | SPI_CR1_BR_1) /*!< BaudRate control equal to fPCLK/128 */ +#define LL_SPI_BAUDRATEPRESCALER_DIV256 (SPI_CR1_BR_2 | SPI_CR1_BR_1 | SPI_CR1_BR_0) /*!< BaudRate control equal to fPCLK/256 */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_BIT_ORDER Transmission Bit Order + * @{ + */ +#define LL_SPI_LSB_FIRST (SPI_CR1_LSBFIRST) /*!< Data is transmitted/received with the LSB first */ +#define LL_SPI_MSB_FIRST 0x00000000U /*!< Data is transmitted/received with the MSB first */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_TRANSFER_MODE Transfer Mode + * @{ + */ +#define LL_SPI_FULL_DUPLEX 0x00000000U /*!< Full-Duplex mode. Rx and Tx transfer on 2 lines */ +#define LL_SPI_SIMPLEX_RX (SPI_CR1_RXONLY) /*!< Simplex Rx mode. Rx transfer only on 1 line */ +#define LL_SPI_HALF_DUPLEX_RX (SPI_CR1_BIDIMODE) /*!< Half-Duplex Rx mode. Rx transfer on 1 line */ +#define LL_SPI_HALF_DUPLEX_TX (SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE) /*!< Half-Duplex Tx mode. Tx transfer on 1 line */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_NSS_MODE Slave Select Pin Mode + * @{ + */ +#define LL_SPI_NSS_SOFT (SPI_CR1_SSM) /*!< NSS managed internally. NSS pin not used and free */ +#define LL_SPI_NSS_HARD_INPUT 0x00000000U /*!< NSS pin used in Input. Only used in Master mode */ +#define LL_SPI_NSS_HARD_OUTPUT (((uint32_t)SPI_CR2_SSOE << 16U)) /*!< NSS pin used in Output. Only used in Slave mode as chip select */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_DATAWIDTH Datawidth + * @{ + */ +#define LL_SPI_DATAWIDTH_4BIT (SPI_CR2_DS_0 | SPI_CR2_DS_1) /*!< Data length for SPI transfer: 4 bits */ +#define LL_SPI_DATAWIDTH_5BIT (SPI_CR2_DS_2) /*!< Data length for SPI transfer: 5 bits */ +#define LL_SPI_DATAWIDTH_6BIT (SPI_CR2_DS_2 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 6 bits */ +#define LL_SPI_DATAWIDTH_7BIT (SPI_CR2_DS_2 | SPI_CR2_DS_1) /*!< Data length for SPI transfer: 7 bits */ +#define LL_SPI_DATAWIDTH_8BIT (SPI_CR2_DS_2 | SPI_CR2_DS_1 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 8 bits */ +#define LL_SPI_DATAWIDTH_9BIT (SPI_CR2_DS_3) /*!< Data length for SPI transfer: 9 bits */ +#define LL_SPI_DATAWIDTH_10BIT (SPI_CR2_DS_3 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 10 bits */ +#define LL_SPI_DATAWIDTH_11BIT (SPI_CR2_DS_3 | SPI_CR2_DS_1) /*!< Data length for SPI transfer: 11 bits */ +#define LL_SPI_DATAWIDTH_12BIT (SPI_CR2_DS_3 | SPI_CR2_DS_1 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 12 bits */ +#define LL_SPI_DATAWIDTH_13BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2) /*!< Data length for SPI transfer: 13 bits */ +#define LL_SPI_DATAWIDTH_14BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 14 bits */ +#define LL_SPI_DATAWIDTH_15BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2 | SPI_CR2_DS_1) /*!< Data length for SPI transfer: 15 bits */ +#define LL_SPI_DATAWIDTH_16BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2 | SPI_CR2_DS_1 | SPI_CR2_DS_0) /*!< Data length for SPI transfer: 16 bits */ +/** + * @} + */ +#if defined(USE_FULL_LL_DRIVER) + +/** @defgroup SPI_LL_EC_CRC_CALCULATION CRC Calculation + * @{ + */ +#define LL_SPI_CRCCALCULATION_DISABLE 0x00000000U /*!< CRC calculation disabled */ +#define LL_SPI_CRCCALCULATION_ENABLE (SPI_CR1_CRCEN) /*!< CRC calculation enabled */ +/** + * @} + */ +#endif /* USE_FULL_LL_DRIVER */ + +/** @defgroup SPI_LL_EC_CRC_LENGTH CRC Length + * @{ + */ +#define LL_SPI_CRC_8BIT 0x00000000U /*!< 8-bit CRC length */ +#define LL_SPI_CRC_16BIT (SPI_CR1_CRCL) /*!< 16-bit CRC length */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_RX_FIFO_TH RX FIFO Threshold + * @{ + */ +#define LL_SPI_RX_FIFO_TH_HALF 0x00000000U /*!< RXNE event is generated if FIFO level is greater than or equel to 1/2 (16-bit) */ +#define LL_SPI_RX_FIFO_TH_QUARTER (SPI_CR2_FRXTH) /*!< RXNE event is generated if FIFO level is greater than or equel to 1/4 (8-bit) */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_RX_FIFO RX FIFO Level + * @{ + */ +#define LL_SPI_RX_FIFO_EMPTY 0x00000000U /*!< FIFO reception empty */ +#define LL_SPI_RX_FIFO_QUARTER_FULL (SPI_SR_FRLVL_0) /*!< FIFO reception 1/4 */ +#define LL_SPI_RX_FIFO_HALF_FULL (SPI_SR_FRLVL_1) /*!< FIFO reception 1/2 */ +#define LL_SPI_RX_FIFO_FULL (SPI_SR_FRLVL_1 | SPI_SR_FRLVL_0) /*!< FIFO reception full */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_TX_FIFO TX FIFO Level + * @{ + */ +#define LL_SPI_TX_FIFO_EMPTY 0x00000000U /*!< FIFO transmission empty */ +#define LL_SPI_TX_FIFO_QUARTER_FULL (SPI_SR_FTLVL_0) /*!< FIFO transmission 1/4 */ +#define LL_SPI_TX_FIFO_HALF_FULL (SPI_SR_FTLVL_1) /*!< FIFO transmission 1/2 */ +#define LL_SPI_TX_FIFO_FULL (SPI_SR_FTLVL_1 | SPI_SR_FTLVL_0) /*!< FIFO transmission full */ +/** + * @} + */ + +/** @defgroup SPI_LL_EC_DMA_PARITY DMA Parity + * @{ + */ +#define LL_SPI_DMA_PARITY_EVEN 0x00000000U /*!< Select DMA parity Even */ +#define LL_SPI_DMA_PARITY_ODD 0x00000001U /*!< Select DMA parity Odd */ + +/** + * @} + */ + +/** + * @} + */ + +/* Exported macro ------------------------------------------------------------*/ +/** @defgroup SPI_LL_Exported_Macros SPI Exported Macros + * @{ + */ + +/** @defgroup SPI_LL_EM_WRITE_READ Common Write and read registers Macros + * @{ + */ + +/** + * @brief Write a value in SPI register + * @param __INSTANCE__ SPI Instance + * @param __REG__ Register to be written + * @param __VALUE__ Value to be written in the register + * @retval None + */ +#define LL_SPI_WriteReg(__INSTANCE__, __REG__, __VALUE__) WRITE_REG(__INSTANCE__->__REG__, (__VALUE__)) + +/** + * @brief Read a value in SPI register + * @param __INSTANCE__ SPI Instance + * @param __REG__ Register to be read + * @retval Register value + */ +#define LL_SPI_ReadReg(__INSTANCE__, __REG__) READ_REG(__INSTANCE__->__REG__) +/** + * @} + */ + +/** + * @} + */ + +/* Exported functions --------------------------------------------------------*/ +/** @defgroup SPI_LL_Exported_Functions SPI Exported Functions + * @{ + */ + +/** @defgroup SPI_LL_EF_Configuration Configuration + * @{ + */ + +/** + * @brief Enable SPI peripheral + * @rmtoll CR1 SPE LL_SPI_Enable + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_Enable(SPI_TypeDef *SPIx) +{ + SET_BIT(SPIx->CR1, SPI_CR1_SPE); +} + +/** + * @brief Disable SPI peripheral + * @note When disabling the SPI, follow the procedure described in the Reference Manual. + * @rmtoll CR1 SPE LL_SPI_Disable + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_Disable(SPI_TypeDef *SPIx) +{ + CLEAR_BIT(SPIx->CR1, SPI_CR1_SPE); +} + +/** + * @brief Check if SPI peripheral is enabled + * @rmtoll CR1 SPE LL_SPI_IsEnabled + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsEnabled(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->CR1, SPI_CR1_SPE) == (SPI_CR1_SPE)) ? 1UL : 0UL); +} + +/** + * @brief Set SPI operation mode to Master or Slave + * @note This bit should not be changed when communication is ongoing. + * @rmtoll CR1 MSTR LL_SPI_SetMode\n + * CR1 SSI LL_SPI_SetMode + * @param SPIx SPI Instance + * @param Mode This parameter can be one of the following values: + * @arg @ref LL_SPI_MODE_MASTER + * @arg @ref LL_SPI_MODE_SLAVE + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetMode(SPI_TypeDef *SPIx, uint32_t Mode) +{ + MODIFY_REG(SPIx->CR1, SPI_CR1_MSTR | SPI_CR1_SSI, Mode); +} + +/** + * @brief Get SPI operation mode (Master or Slave) + * @rmtoll CR1 MSTR LL_SPI_GetMode\n + * CR1 SSI LL_SPI_GetMode + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_MODE_MASTER + * @arg @ref LL_SPI_MODE_SLAVE + */ +__STATIC_INLINE uint32_t LL_SPI_GetMode(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_MSTR | SPI_CR1_SSI)); +} + +/** + * @brief Set serial protocol used + * @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation. + * @rmtoll CR2 FRF LL_SPI_SetStandard + * @param SPIx SPI Instance + * @param Standard This parameter can be one of the following values: + * @arg @ref LL_SPI_PROTOCOL_MOTOROLA + * @arg @ref LL_SPI_PROTOCOL_TI + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetStandard(SPI_TypeDef *SPIx, uint32_t Standard) +{ + MODIFY_REG(SPIx->CR2, SPI_CR2_FRF, Standard); +} + +/** + * @brief Get serial protocol used + * @rmtoll CR2 FRF LL_SPI_GetStandard + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_PROTOCOL_MOTOROLA + * @arg @ref LL_SPI_PROTOCOL_TI + */ +__STATIC_INLINE uint32_t LL_SPI_GetStandard(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_FRF)); +} + +/** + * @brief Set clock phase + * @note This bit should not be changed when communication is ongoing. + * This bit is not used in SPI TI mode. + * @rmtoll CR1 CPHA LL_SPI_SetClockPhase + * @param SPIx SPI Instance + * @param ClockPhase This parameter can be one of the following values: + * @arg @ref LL_SPI_PHASE_1EDGE + * @arg @ref LL_SPI_PHASE_2EDGE + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetClockPhase(SPI_TypeDef *SPIx, uint32_t ClockPhase) +{ + MODIFY_REG(SPIx->CR1, SPI_CR1_CPHA, ClockPhase); +} + +/** + * @brief Get clock phase + * @rmtoll CR1 CPHA LL_SPI_GetClockPhase + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_PHASE_1EDGE + * @arg @ref LL_SPI_PHASE_2EDGE + */ +__STATIC_INLINE uint32_t LL_SPI_GetClockPhase(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_CPHA)); +} + +/** + * @brief Set clock polarity + * @note This bit should not be changed when communication is ongoing. + * This bit is not used in SPI TI mode. + * @rmtoll CR1 CPOL LL_SPI_SetClockPolarity + * @param SPIx SPI Instance + * @param ClockPolarity This parameter can be one of the following values: + * @arg @ref LL_SPI_POLARITY_LOW + * @arg @ref LL_SPI_POLARITY_HIGH + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetClockPolarity(SPI_TypeDef *SPIx, uint32_t ClockPolarity) +{ + MODIFY_REG(SPIx->CR1, SPI_CR1_CPOL, ClockPolarity); +} + +/** + * @brief Get clock polarity + * @rmtoll CR1 CPOL LL_SPI_GetClockPolarity + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_POLARITY_LOW + * @arg @ref LL_SPI_POLARITY_HIGH + */ +__STATIC_INLINE uint32_t LL_SPI_GetClockPolarity(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_CPOL)); +} + +/** + * @brief Set baud rate prescaler + * @note These bits should not be changed when communication is ongoing. SPI BaudRate = fPCLK/Prescaler. + * @rmtoll CR1 BR LL_SPI_SetBaudRatePrescaler + * @param SPIx SPI Instance + * @param BaudRate This parameter can be one of the following values: + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV2 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV4 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV8 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV16 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV32 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV64 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV128 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV256 + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetBaudRatePrescaler(SPI_TypeDef *SPIx, uint32_t BaudRate) +{ + MODIFY_REG(SPIx->CR1, SPI_CR1_BR, BaudRate); +} + +/** + * @brief Get baud rate prescaler + * @rmtoll CR1 BR LL_SPI_GetBaudRatePrescaler + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV2 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV4 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV8 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV16 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV32 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV64 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV128 + * @arg @ref LL_SPI_BAUDRATEPRESCALER_DIV256 + */ +__STATIC_INLINE uint32_t LL_SPI_GetBaudRatePrescaler(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_BR)); +} + +/** + * @brief Set transfer bit order + * @note This bit should not be changed when communication is ongoing. This bit is not used in SPI TI mode. + * @rmtoll CR1 LSBFIRST LL_SPI_SetTransferBitOrder + * @param SPIx SPI Instance + * @param BitOrder This parameter can be one of the following values: + * @arg @ref LL_SPI_LSB_FIRST + * @arg @ref LL_SPI_MSB_FIRST + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetTransferBitOrder(SPI_TypeDef *SPIx, uint32_t BitOrder) +{ + MODIFY_REG(SPIx->CR1, SPI_CR1_LSBFIRST, BitOrder); +} + +/** + * @brief Get transfer bit order + * @rmtoll CR1 LSBFIRST LL_SPI_GetTransferBitOrder + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_LSB_FIRST + * @arg @ref LL_SPI_MSB_FIRST + */ +__STATIC_INLINE uint32_t LL_SPI_GetTransferBitOrder(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_LSBFIRST)); +} + +/** + * @brief Set transfer direction mode + * @note For Half-Duplex mode, Rx Direction is set by default. + * In master mode, the MOSI pin is used and in slave mode, the MISO pin is used for Half-Duplex. + * @rmtoll CR1 RXONLY LL_SPI_SetTransferDirection\n + * CR1 BIDIMODE LL_SPI_SetTransferDirection\n + * CR1 BIDIOE LL_SPI_SetTransferDirection + * @param SPIx SPI Instance + * @param TransferDirection This parameter can be one of the following values: + * @arg @ref LL_SPI_FULL_DUPLEX + * @arg @ref LL_SPI_SIMPLEX_RX + * @arg @ref LL_SPI_HALF_DUPLEX_RX + * @arg @ref LL_SPI_HALF_DUPLEX_TX + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetTransferDirection(SPI_TypeDef *SPIx, uint32_t TransferDirection) +{ + MODIFY_REG(SPIx->CR1, SPI_CR1_RXONLY | SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE, TransferDirection); +} + +/** + * @brief Get transfer direction mode + * @rmtoll CR1 RXONLY LL_SPI_GetTransferDirection\n + * CR1 BIDIMODE LL_SPI_GetTransferDirection\n + * CR1 BIDIOE LL_SPI_GetTransferDirection + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_FULL_DUPLEX + * @arg @ref LL_SPI_SIMPLEX_RX + * @arg @ref LL_SPI_HALF_DUPLEX_RX + * @arg @ref LL_SPI_HALF_DUPLEX_TX + */ +__STATIC_INLINE uint32_t LL_SPI_GetTransferDirection(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_RXONLY | SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE)); +} + +/** + * @brief Set frame data width + * @rmtoll CR2 DS LL_SPI_SetDataWidth + * @param SPIx SPI Instance + * @param DataWidth This parameter can be one of the following values: + * @arg @ref LL_SPI_DATAWIDTH_4BIT + * @arg @ref LL_SPI_DATAWIDTH_5BIT + * @arg @ref LL_SPI_DATAWIDTH_6BIT + * @arg @ref LL_SPI_DATAWIDTH_7BIT + * @arg @ref LL_SPI_DATAWIDTH_8BIT + * @arg @ref LL_SPI_DATAWIDTH_9BIT + * @arg @ref LL_SPI_DATAWIDTH_10BIT + * @arg @ref LL_SPI_DATAWIDTH_11BIT + * @arg @ref LL_SPI_DATAWIDTH_12BIT + * @arg @ref LL_SPI_DATAWIDTH_13BIT + * @arg @ref LL_SPI_DATAWIDTH_14BIT + * @arg @ref LL_SPI_DATAWIDTH_15BIT + * @arg @ref LL_SPI_DATAWIDTH_16BIT + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetDataWidth(SPI_TypeDef *SPIx, uint32_t DataWidth) +{ + MODIFY_REG(SPIx->CR2, SPI_CR2_DS, DataWidth); +} + +/** + * @brief Get frame data width + * @rmtoll CR2 DS LL_SPI_GetDataWidth + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_DATAWIDTH_4BIT + * @arg @ref LL_SPI_DATAWIDTH_5BIT + * @arg @ref LL_SPI_DATAWIDTH_6BIT + * @arg @ref LL_SPI_DATAWIDTH_7BIT + * @arg @ref LL_SPI_DATAWIDTH_8BIT + * @arg @ref LL_SPI_DATAWIDTH_9BIT + * @arg @ref LL_SPI_DATAWIDTH_10BIT + * @arg @ref LL_SPI_DATAWIDTH_11BIT + * @arg @ref LL_SPI_DATAWIDTH_12BIT + * @arg @ref LL_SPI_DATAWIDTH_13BIT + * @arg @ref LL_SPI_DATAWIDTH_14BIT + * @arg @ref LL_SPI_DATAWIDTH_15BIT + * @arg @ref LL_SPI_DATAWIDTH_16BIT + */ +__STATIC_INLINE uint32_t LL_SPI_GetDataWidth(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_DS)); +} + +/** + * @brief Set threshold of RXFIFO that triggers an RXNE event + * @rmtoll CR2 FRXTH LL_SPI_SetRxFIFOThreshold + * @param SPIx SPI Instance + * @param Threshold This parameter can be one of the following values: + * @arg @ref LL_SPI_RX_FIFO_TH_HALF + * @arg @ref LL_SPI_RX_FIFO_TH_QUARTER + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetRxFIFOThreshold(SPI_TypeDef *SPIx, uint32_t Threshold) +{ + MODIFY_REG(SPIx->CR2, SPI_CR2_FRXTH, Threshold); +} + +/** + * @brief Get threshold of RXFIFO that triggers an RXNE event + * @rmtoll CR2 FRXTH LL_SPI_GetRxFIFOThreshold + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_RX_FIFO_TH_HALF + * @arg @ref LL_SPI_RX_FIFO_TH_QUARTER + */ +__STATIC_INLINE uint32_t LL_SPI_GetRxFIFOThreshold(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_FRXTH)); +} + +/** + * @} + */ + +/** @defgroup SPI_LL_EF_CRC_Management CRC Management + * @{ + */ + +/** + * @brief Enable CRC + * @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation. + * @rmtoll CR1 CRCEN LL_SPI_EnableCRC + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_EnableCRC(SPI_TypeDef *SPIx) +{ + SET_BIT(SPIx->CR1, SPI_CR1_CRCEN); +} + +/** + * @brief Disable CRC + * @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation. + * @rmtoll CR1 CRCEN LL_SPI_DisableCRC + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_DisableCRC(SPI_TypeDef *SPIx) +{ + CLEAR_BIT(SPIx->CR1, SPI_CR1_CRCEN); +} + +/** + * @brief Check if CRC is enabled + * @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation. + * @rmtoll CR1 CRCEN LL_SPI_IsEnabledCRC + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsEnabledCRC(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->CR1, SPI_CR1_CRCEN) == (SPI_CR1_CRCEN)) ? 1UL : 0UL); +} + +/** + * @brief Set CRC Length + * @note This bit should be written only when SPI is disabled (SPE = 0) for correct operation. + * @rmtoll CR1 CRCL LL_SPI_SetCRCWidth + * @param SPIx SPI Instance + * @param CRCLength This parameter can be one of the following values: + * @arg @ref LL_SPI_CRC_8BIT + * @arg @ref LL_SPI_CRC_16BIT + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetCRCWidth(SPI_TypeDef *SPIx, uint32_t CRCLength) +{ + MODIFY_REG(SPIx->CR1, SPI_CR1_CRCL, CRCLength); +} + +/** + * @brief Get CRC Length + * @rmtoll CR1 CRCL LL_SPI_GetCRCWidth + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_CRC_8BIT + * @arg @ref LL_SPI_CRC_16BIT + */ +__STATIC_INLINE uint32_t LL_SPI_GetCRCWidth(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR1, SPI_CR1_CRCL)); +} + +/** + * @brief Set CRCNext to transfer CRC on the line + * @note This bit has to be written as soon as the last data is written in the SPIx_DR register. + * @rmtoll CR1 CRCNEXT LL_SPI_SetCRCNext + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetCRCNext(SPI_TypeDef *SPIx) +{ + SET_BIT(SPIx->CR1, SPI_CR1_CRCNEXT); +} + +/** + * @brief Set polynomial for CRC calculation + * @rmtoll CRCPR CRCPOLY LL_SPI_SetCRCPolynomial + * @param SPIx SPI Instance + * @param CRCPoly This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFFFF + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetCRCPolynomial(SPI_TypeDef *SPIx, uint32_t CRCPoly) +{ + WRITE_REG(SPIx->CRCPR, (uint16_t)CRCPoly); +} + +/** + * @brief Get polynomial for CRC calculation + * @rmtoll CRCPR CRCPOLY LL_SPI_GetCRCPolynomial + * @param SPIx SPI Instance + * @retval Returned value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF + */ +__STATIC_INLINE uint32_t LL_SPI_GetCRCPolynomial(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_REG(SPIx->CRCPR)); +} + +/** + * @brief Get Rx CRC + * @rmtoll RXCRCR RXCRC LL_SPI_GetRxCRC + * @param SPIx SPI Instance + * @retval Returned value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF + */ +__STATIC_INLINE uint32_t LL_SPI_GetRxCRC(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_REG(SPIx->RXCRCR)); +} + +/** + * @brief Get Tx CRC + * @rmtoll TXCRCR TXCRC LL_SPI_GetTxCRC + * @param SPIx SPI Instance + * @retval Returned value is a number between Min_Data = 0x00 and Max_Data = 0xFFFF + */ +__STATIC_INLINE uint32_t LL_SPI_GetTxCRC(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_REG(SPIx->TXCRCR)); +} + +/** + * @} + */ + +/** @defgroup SPI_LL_EF_NSS_Management Slave Select Pin Management + * @{ + */ + +/** + * @brief Set NSS mode + * @note LL_SPI_NSS_SOFT Mode is not used in SPI TI mode. + * @rmtoll CR1 SSM LL_SPI_SetNSSMode\n + * @rmtoll CR2 SSOE LL_SPI_SetNSSMode + * @param SPIx SPI Instance + * @param NSS This parameter can be one of the following values: + * @arg @ref LL_SPI_NSS_SOFT + * @arg @ref LL_SPI_NSS_HARD_INPUT + * @arg @ref LL_SPI_NSS_HARD_OUTPUT + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetNSSMode(SPI_TypeDef *SPIx, uint32_t NSS) +{ + MODIFY_REG(SPIx->CR1, SPI_CR1_SSM, NSS); + MODIFY_REG(SPIx->CR2, SPI_CR2_SSOE, ((uint32_t)(NSS >> 16U))); +} + +/** + * @brief Get NSS mode + * @rmtoll CR1 SSM LL_SPI_GetNSSMode\n + * @rmtoll CR2 SSOE LL_SPI_GetNSSMode + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_NSS_SOFT + * @arg @ref LL_SPI_NSS_HARD_INPUT + * @arg @ref LL_SPI_NSS_HARD_OUTPUT + */ +__STATIC_INLINE uint32_t LL_SPI_GetNSSMode(SPI_TypeDef *SPIx) +{ + register uint32_t Ssm = (READ_BIT(SPIx->CR1, SPI_CR1_SSM)); + register uint32_t Ssoe = (READ_BIT(SPIx->CR2, SPI_CR2_SSOE) << 16U); + return (Ssm | Ssoe); +} + +/** + * @brief Enable NSS pulse management + * @note This bit should not be changed when communication is ongoing. This bit is not used in SPI TI mode. + * @rmtoll CR2 NSSP LL_SPI_EnableNSSPulseMgt + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_EnableNSSPulseMgt(SPI_TypeDef *SPIx) +{ + SET_BIT(SPIx->CR2, SPI_CR2_NSSP); +} + +/** + * @brief Disable NSS pulse management + * @note This bit should not be changed when communication is ongoing. This bit is not used in SPI TI mode. + * @rmtoll CR2 NSSP LL_SPI_DisableNSSPulseMgt + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_DisableNSSPulseMgt(SPI_TypeDef *SPIx) +{ + CLEAR_BIT(SPIx->CR2, SPI_CR2_NSSP); +} + +/** + * @brief Check if NSS pulse is enabled + * @note This bit should not be changed when communication is ongoing. This bit is not used in SPI TI mode. + * @rmtoll CR2 NSSP LL_SPI_IsEnabledNSSPulse + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsEnabledNSSPulse(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->CR2, SPI_CR2_NSSP) == (SPI_CR2_NSSP)) ? 1UL : 0UL); +} + +/** + * @} + */ + +/** @defgroup SPI_LL_EF_FLAG_Management FLAG Management + * @{ + */ + +/** + * @brief Check if Rx buffer is not empty + * @rmtoll SR RXNE LL_SPI_IsActiveFlag_RXNE + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_RXNE(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->SR, SPI_SR_RXNE) == (SPI_SR_RXNE)) ? 1UL : 0UL); +} + +/** + * @brief Check if Tx buffer is empty + * @rmtoll SR TXE LL_SPI_IsActiveFlag_TXE + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_TXE(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->SR, SPI_SR_TXE) == (SPI_SR_TXE)) ? 1UL : 0UL); +} + +/** + * @brief Get CRC error flag + * @rmtoll SR CRCERR LL_SPI_IsActiveFlag_CRCERR + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_CRCERR(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->SR, SPI_SR_CRCERR) == (SPI_SR_CRCERR)) ? 1UL : 0UL); +} + +/** + * @brief Get mode fault error flag + * @rmtoll SR MODF LL_SPI_IsActiveFlag_MODF + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_MODF(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->SR, SPI_SR_MODF) == (SPI_SR_MODF)) ? 1UL : 0UL); +} + +/** + * @brief Get overrun error flag + * @rmtoll SR OVR LL_SPI_IsActiveFlag_OVR + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_OVR(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->SR, SPI_SR_OVR) == (SPI_SR_OVR)) ? 1UL : 0UL); +} + +/** + * @brief Get busy flag + * @note The BSY flag is cleared under any one of the following conditions: + * -When the SPI is correctly disabled + * -When a fault is detected in Master mode (MODF bit set to 1) + * -In Master mode, when it finishes a data transmission and no new data is ready to be + * sent + * -In Slave mode, when the BSY flag is set to '0' for at least one SPI clock cycle between + * each data transfer. + * @rmtoll SR BSY LL_SPI_IsActiveFlag_BSY + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_BSY(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->SR, SPI_SR_BSY) == (SPI_SR_BSY)) ? 1UL : 0UL); +} + +/** + * @brief Get frame format error flag + * @rmtoll SR FRE LL_SPI_IsActiveFlag_FRE + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsActiveFlag_FRE(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->SR, SPI_SR_FRE) == (SPI_SR_FRE)) ? 1UL : 0UL); +} + +/** + * @brief Get FIFO reception Level + * @rmtoll SR FRLVL LL_SPI_GetRxFIFOLevel + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_RX_FIFO_EMPTY + * @arg @ref LL_SPI_RX_FIFO_QUARTER_FULL + * @arg @ref LL_SPI_RX_FIFO_HALF_FULL + * @arg @ref LL_SPI_RX_FIFO_FULL + */ +__STATIC_INLINE uint32_t LL_SPI_GetRxFIFOLevel(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->SR, SPI_SR_FRLVL)); +} + +/** + * @brief Get FIFO Transmission Level + * @rmtoll SR FTLVL LL_SPI_GetTxFIFOLevel + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_TX_FIFO_EMPTY + * @arg @ref LL_SPI_TX_FIFO_QUARTER_FULL + * @arg @ref LL_SPI_TX_FIFO_HALF_FULL + * @arg @ref LL_SPI_TX_FIFO_FULL + */ +__STATIC_INLINE uint32_t LL_SPI_GetTxFIFOLevel(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->SR, SPI_SR_FTLVL)); +} + +/** + * @brief Clear CRC error flag + * @rmtoll SR CRCERR LL_SPI_ClearFlag_CRCERR + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_ClearFlag_CRCERR(SPI_TypeDef *SPIx) +{ + CLEAR_BIT(SPIx->SR, SPI_SR_CRCERR); +} + +/** + * @brief Clear mode fault error flag + * @note Clearing this flag is done by a read access to the SPIx_SR + * register followed by a write access to the SPIx_CR1 register + * @rmtoll SR MODF LL_SPI_ClearFlag_MODF + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_ClearFlag_MODF(SPI_TypeDef *SPIx) +{ + __IO uint32_t tmpreg_sr; + tmpreg_sr = SPIx->SR; + (void) tmpreg_sr; + CLEAR_BIT(SPIx->CR1, SPI_CR1_SPE); +} + +/** + * @brief Clear overrun error flag + * @note Clearing this flag is done by a read access to the SPIx_DR + * register followed by a read access to the SPIx_SR register + * @rmtoll SR OVR LL_SPI_ClearFlag_OVR + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_ClearFlag_OVR(SPI_TypeDef *SPIx) +{ + __IO uint32_t tmpreg; + tmpreg = SPIx->DR; + (void) tmpreg; + tmpreg = SPIx->SR; + (void) tmpreg; +} + +/** + * @brief Clear frame format error flag + * @note Clearing this flag is done by reading SPIx_SR register + * @rmtoll SR FRE LL_SPI_ClearFlag_FRE + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_ClearFlag_FRE(SPI_TypeDef *SPIx) +{ + __IO uint32_t tmpreg; + tmpreg = SPIx->SR; + (void) tmpreg; +} + +/** + * @} + */ + +/** @defgroup SPI_LL_EF_IT_Management Interrupt Management + * @{ + */ + +/** + * @brief Enable error interrupt + * @note This bit controls the generation of an interrupt when an error condition occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode). + * @rmtoll CR2 ERRIE LL_SPI_EnableIT_ERR + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_EnableIT_ERR(SPI_TypeDef *SPIx) +{ + SET_BIT(SPIx->CR2, SPI_CR2_ERRIE); +} + +/** + * @brief Enable Rx buffer not empty interrupt + * @rmtoll CR2 RXNEIE LL_SPI_EnableIT_RXNE + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_EnableIT_RXNE(SPI_TypeDef *SPIx) +{ + SET_BIT(SPIx->CR2, SPI_CR2_RXNEIE); +} + +/** + * @brief Enable Tx buffer empty interrupt + * @rmtoll CR2 TXEIE LL_SPI_EnableIT_TXE + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_EnableIT_TXE(SPI_TypeDef *SPIx) +{ + SET_BIT(SPIx->CR2, SPI_CR2_TXEIE); +} + +/** + * @brief Disable error interrupt + * @note This bit controls the generation of an interrupt when an error condition occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode). + * @rmtoll CR2 ERRIE LL_SPI_DisableIT_ERR + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_DisableIT_ERR(SPI_TypeDef *SPIx) +{ + CLEAR_BIT(SPIx->CR2, SPI_CR2_ERRIE); +} + +/** + * @brief Disable Rx buffer not empty interrupt + * @rmtoll CR2 RXNEIE LL_SPI_DisableIT_RXNE + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_DisableIT_RXNE(SPI_TypeDef *SPIx) +{ + CLEAR_BIT(SPIx->CR2, SPI_CR2_RXNEIE); +} + +/** + * @brief Disable Tx buffer empty interrupt + * @rmtoll CR2 TXEIE LL_SPI_DisableIT_TXE + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_DisableIT_TXE(SPI_TypeDef *SPIx) +{ + CLEAR_BIT(SPIx->CR2, SPI_CR2_TXEIE); +} + +/** + * @brief Check if error interrupt is enabled + * @rmtoll CR2 ERRIE LL_SPI_IsEnabledIT_ERR + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsEnabledIT_ERR(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->CR2, SPI_CR2_ERRIE) == (SPI_CR2_ERRIE)) ? 1UL : 0UL); +} + +/** + * @brief Check if Rx buffer not empty interrupt is enabled + * @rmtoll CR2 RXNEIE LL_SPI_IsEnabledIT_RXNE + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsEnabledIT_RXNE(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->CR2, SPI_CR2_RXNEIE) == (SPI_CR2_RXNEIE)) ? 1UL : 0UL); +} + +/** + * @brief Check if Tx buffer empty interrupt + * @rmtoll CR2 TXEIE LL_SPI_IsEnabledIT_TXE + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsEnabledIT_TXE(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->CR2, SPI_CR2_TXEIE) == (SPI_CR2_TXEIE)) ? 1UL : 0UL); +} + +/** + * @} + */ + +/** @defgroup SPI_LL_EF_DMA_Management DMA Management + * @{ + */ + +/** + * @brief Enable DMA Rx + * @rmtoll CR2 RXDMAEN LL_SPI_EnableDMAReq_RX + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_EnableDMAReq_RX(SPI_TypeDef *SPIx) +{ + SET_BIT(SPIx->CR2, SPI_CR2_RXDMAEN); +} + +/** + * @brief Disable DMA Rx + * @rmtoll CR2 RXDMAEN LL_SPI_DisableDMAReq_RX + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_DisableDMAReq_RX(SPI_TypeDef *SPIx) +{ + CLEAR_BIT(SPIx->CR2, SPI_CR2_RXDMAEN); +} + +/** + * @brief Check if DMA Rx is enabled + * @rmtoll CR2 RXDMAEN LL_SPI_IsEnabledDMAReq_RX + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsEnabledDMAReq_RX(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->CR2, SPI_CR2_RXDMAEN) == (SPI_CR2_RXDMAEN)) ? 1UL : 0UL); +} + +/** + * @brief Enable DMA Tx + * @rmtoll CR2 TXDMAEN LL_SPI_EnableDMAReq_TX + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_EnableDMAReq_TX(SPI_TypeDef *SPIx) +{ + SET_BIT(SPIx->CR2, SPI_CR2_TXDMAEN); +} + +/** + * @brief Disable DMA Tx + * @rmtoll CR2 TXDMAEN LL_SPI_DisableDMAReq_TX + * @param SPIx SPI Instance + * @retval None + */ +__STATIC_INLINE void LL_SPI_DisableDMAReq_TX(SPI_TypeDef *SPIx) +{ + CLEAR_BIT(SPIx->CR2, SPI_CR2_TXDMAEN); +} + +/** + * @brief Check if DMA Tx is enabled + * @rmtoll CR2 TXDMAEN LL_SPI_IsEnabledDMAReq_TX + * @param SPIx SPI Instance + * @retval State of bit (1 or 0). + */ +__STATIC_INLINE uint32_t LL_SPI_IsEnabledDMAReq_TX(SPI_TypeDef *SPIx) +{ + return ((READ_BIT(SPIx->CR2, SPI_CR2_TXDMAEN) == (SPI_CR2_TXDMAEN)) ? 1UL : 0UL); +} + +/** + * @brief Set parity of Last DMA reception + * @rmtoll CR2 LDMARX LL_SPI_SetDMAParity_RX + * @param SPIx SPI Instance + * @param Parity This parameter can be one of the following values: + * @arg @ref LL_SPI_DMA_PARITY_ODD + * @arg @ref LL_SPI_DMA_PARITY_EVEN + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetDMAParity_RX(SPI_TypeDef *SPIx, uint32_t Parity) +{ + MODIFY_REG(SPIx->CR2, SPI_CR2_LDMARX, (Parity << SPI_CR2_LDMARX_Pos)); +} + +/** + * @brief Get parity configuration for Last DMA reception + * @rmtoll CR2 LDMARX LL_SPI_GetDMAParity_RX + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_DMA_PARITY_ODD + * @arg @ref LL_SPI_DMA_PARITY_EVEN + */ +__STATIC_INLINE uint32_t LL_SPI_GetDMAParity_RX(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_LDMARX) >> SPI_CR2_LDMARX_Pos); +} + +/** + * @brief Set parity of Last DMA transmission + * @rmtoll CR2 LDMATX LL_SPI_SetDMAParity_TX + * @param SPIx SPI Instance + * @param Parity This parameter can be one of the following values: + * @arg @ref LL_SPI_DMA_PARITY_ODD + * @arg @ref LL_SPI_DMA_PARITY_EVEN + * @retval None + */ +__STATIC_INLINE void LL_SPI_SetDMAParity_TX(SPI_TypeDef *SPIx, uint32_t Parity) +{ + MODIFY_REG(SPIx->CR2, SPI_CR2_LDMATX, (Parity << SPI_CR2_LDMATX_Pos)); +} + +/** + * @brief Get parity configuration for Last DMA transmission + * @rmtoll CR2 LDMATX LL_SPI_GetDMAParity_TX + * @param SPIx SPI Instance + * @retval Returned value can be one of the following values: + * @arg @ref LL_SPI_DMA_PARITY_ODD + * @arg @ref LL_SPI_DMA_PARITY_EVEN + */ +__STATIC_INLINE uint32_t LL_SPI_GetDMAParity_TX(SPI_TypeDef *SPIx) +{ + return (uint32_t)(READ_BIT(SPIx->CR2, SPI_CR2_LDMATX) >> SPI_CR2_LDMATX_Pos); +} + +/** + * @brief Get the data register address used for DMA transfer + * @rmtoll DR DR LL_SPI_DMA_GetRegAddr + * @param SPIx SPI Instance + * @retval Address of data register + */ +__STATIC_INLINE uint32_t LL_SPI_DMA_GetRegAddr(SPI_TypeDef *SPIx) +{ + return (uint32_t) & (SPIx->DR); +} + +/** + * @} + */ + +/** @defgroup SPI_LL_EF_DATA_Management DATA Management + * @{ + */ + +/** + * @brief Read 8-Bits in the data register + * @rmtoll DR DR LL_SPI_ReceiveData8 + * @param SPIx SPI Instance + * @retval RxData Value between Min_Data=0x00 and Max_Data=0xFF + */ +__STATIC_INLINE uint8_t LL_SPI_ReceiveData8(SPI_TypeDef *SPIx) +{ + return (uint8_t)(READ_REG(SPIx->DR)); +} + +/** + * @brief Read 16-Bits in the data register + * @rmtoll DR DR LL_SPI_ReceiveData16 + * @param SPIx SPI Instance + * @retval RxData Value between Min_Data=0x00 and Max_Data=0xFFFF + */ +__STATIC_INLINE uint16_t LL_SPI_ReceiveData16(SPI_TypeDef *SPIx) +{ + return (uint16_t)(READ_REG(SPIx->DR)); +} + +/** + * @brief Write 8-Bits in the data register + * @rmtoll DR DR LL_SPI_TransmitData8 + * @param SPIx SPI Instance + * @param TxData Value between Min_Data=0x00 and Max_Data=0xFF + * @retval None + */ +__STATIC_INLINE void LL_SPI_TransmitData8(SPI_TypeDef *SPIx, uint8_t TxData) +{ +#if defined (__GNUC__) + __IO uint8_t *spidr = ((__IO uint8_t *)&SPIx->DR); + *spidr = TxData; +#else + *((__IO uint8_t *)&SPIx->DR) = TxData; +#endif +} + +/** + * @brief Write 16-Bits in the data register + * @rmtoll DR DR LL_SPI_TransmitData16 + * @param SPIx SPI Instance + * @param TxData Value between Min_Data=0x00 and Max_Data=0xFFFF + * @retval None + */ +__STATIC_INLINE void LL_SPI_TransmitData16(SPI_TypeDef *SPIx, uint16_t TxData) +{ +#if defined (__GNUC__) + __IO uint16_t *spidr = ((__IO uint16_t *)&SPIx->DR); + *spidr = TxData; +#else + SPIx->DR = TxData; +#endif +} + +/** + * @} + */ +#if defined(USE_FULL_LL_DRIVER) +/** @defgroup SPI_LL_EF_Init Initialization and de-initialization functions + * @{ + */ + +ErrorStatus LL_SPI_DeInit(SPI_TypeDef *SPIx); +ErrorStatus LL_SPI_Init(SPI_TypeDef *SPIx, LL_SPI_InitTypeDef *SPI_InitStruct); +void LL_SPI_StructInit(LL_SPI_InitTypeDef *SPI_InitStruct); + +/** + * @} + */ +#endif /* USE_FULL_LL_DRIVER */ +/** + * @} + */ + +/** + * @} + */ + +#endif /* defined (SPI1) || defined (SPI2) || defined (SPI3) */ + +/** + * @} + */ + +#ifdef __cplusplus +} +#endif + +#endif /* STM32L4xx_LL_SPI_H */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ diff --git a/targets/stm32l432/src/init.c b/targets/stm32l432/src/init.c index daa81d0..aa66189 100644 --- a/targets/stm32l432/src/init.c +++ b/targets/stm32l432/src/init.c @@ -33,6 +33,7 @@ #include "stm32l4xx_ll_bus.h" #include "stm32l4xx_ll_tim.h" #include "stm32l4xx_ll_rng.h" +#include "stm32l4xx_ll_spi.h" #include "stm32l4xx_ll_usb.h" #include "stm32l4xx_hal_pcd.h" #include "stm32l4xx_hal.h" @@ -62,6 +63,7 @@ static void MX_USART1_UART_Init(void); static void MX_TIM2_Init(void); static void MX_TIM6_Init(void); static void MX_RNG_Init(void); +static void MX_SPI1_Init(void); #define Error_Handler() _Error_Handler(__FILE__,__LINE__) void _Error_Handler(char *file, int line); @@ -83,6 +85,7 @@ void hw_init(void) MX_TIM2_Init(); // PWM for LEDs MX_TIM6_Init(); // ~1 ms timer + MX_SPI1_Init(); #if DEBUG_LEVEL > 0 MX_USART1_UART_Init();// debug uart @@ -416,3 +419,46 @@ static void MX_RNG_Init(void) LL_RNG_Enable(RNG); } + +/* SPI1 init function */ +static void MX_SPI1_Init(void) +{ + + LL_SPI_InitTypeDef SPI_InitStruct; + + LL_GPIO_InitTypeDef GPIO_InitStruct; + + /* Peripheral clock enable */ + LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SPI1); + + /**SPI1 GPIO Configuration + PA5 ------> SPI1_SCK + PA6 ------> SPI1_MISO + PA7 ------> SPI1_MOSI + */ + GPIO_InitStruct.Pin = LL_GPIO_PIN_5|LL_GPIO_PIN_6|LL_GPIO_PIN_7; + GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE; + GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH; + GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL; + GPIO_InitStruct.Pull = LL_GPIO_PULL_NO; + GPIO_InitStruct.Alternate = LL_GPIO_AF_5; + LL_GPIO_Init(GPIOA, &GPIO_InitStruct); + + /* SPI1 parameter configuration*/ + SPI_InitStruct.TransferDirection = LL_SPI_FULL_DUPLEX; + SPI_InitStruct.Mode = LL_SPI_MODE_MASTER; + 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_SOFT; + SPI_InitStruct.BaudRate = LL_SPI_BAUDRATEPRESCALER_DIV64; + SPI_InitStruct.BitOrder = LL_SPI_MSB_FIRST; + SPI_InitStruct.CRCCalculation = LL_SPI_CRCCALCULATION_DISABLE; + SPI_InitStruct.CRCPoly = 7; + LL_SPI_Init(SPI1, &SPI_InitStruct); + + LL_SPI_SetStandard(SPI1, LL_SPI_PROTOCOL_MOTOROLA); + + LL_SPI_EnableNSSPulseMgt(SPI1); + +}