/** ****************************************************************************** * @file stm32f4xx_ll_fmpi2c.c * @author MCD Application Team * @brief FMPI2C LL module driver. ****************************************************************************** * @attention * * Copyright (c) 2016 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ #if defined(USE_FULL_LL_DRIVER) #if defined(FMPI2C_CR1_PE) /* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_ll_fmpi2c.h" #include "stm32f4xx_ll_bus.h" #ifdef USE_FULL_ASSERT #include "stm32_assert.h" #else #define assert_param(expr) ((void)0U) #endif /* USE_FULL_ASSERT */ /** @addtogroup STM32F4xx_LL_Driver * @{ */ #if defined (FMPI2C1) /** @defgroup FMPI2C_LL FMPI2C * @{ */ /* Private types -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private constants ---------------------------------------------------------*/ /* Private macros ------------------------------------------------------------*/ /** @addtogroup FMPI2C_LL_Private_Macros * @{ */ #define IS_LL_FMPI2C_PERIPHERAL_MODE(__VALUE__) (((__VALUE__) == LL_FMPI2C_MODE_I2C) || \ ((__VALUE__) == LL_FMPI2C_MODE_SMBUS_HOST) || \ ((__VALUE__) == LL_FMPI2C_MODE_SMBUS_DEVICE) || \ ((__VALUE__) == LL_FMPI2C_MODE_SMBUS_DEVICE_ARP)) #define IS_LL_FMPI2C_ANALOG_FILTER(__VALUE__) (((__VALUE__) == LL_FMPI2C_ANALOGFILTER_ENABLE) || \ ((__VALUE__) == LL_FMPI2C_ANALOGFILTER_DISABLE)) #define IS_LL_FMPI2C_DIGITAL_FILTER(__VALUE__) ((__VALUE__) <= 0x0000000FU) #define IS_LL_FMPI2C_OWN_ADDRESS1(__VALUE__) ((__VALUE__) <= 0x000003FFU) #define IS_LL_FMPI2C_TYPE_ACKNOWLEDGE(__VALUE__) (((__VALUE__) == LL_FMPI2C_ACK) || \ ((__VALUE__) == LL_FMPI2C_NACK)) #define IS_LL_FMPI2C_OWN_ADDRSIZE(__VALUE__) (((__VALUE__) == LL_FMPI2C_OWNADDRESS1_7BIT) || \ ((__VALUE__) == LL_FMPI2C_OWNADDRESS1_10BIT)) /** * @} */ /* Private function prototypes -----------------------------------------------*/ /* Exported functions --------------------------------------------------------*/ /** @addtogroup FMPI2C_LL_Exported_Functions * @{ */ /** @addtogroup FMPI2C_LL_EF_Init * @{ */ /** * @brief De-initialize the FMPI2C registers to their default reset values. * @param FMPI2Cx FMPI2C Instance. * @retval An ErrorStatus enumeration value: * - SUCCESS: FMPI2C registers are de-initialized * - ERROR: FMPI2C registers are not de-initialized */ ErrorStatus LL_FMPI2C_DeInit(const FMPI2C_TypeDef *FMPI2Cx) { ErrorStatus status = SUCCESS; /* Check the FMPI2C Instance FMPI2Cx */ assert_param(IS_FMPI2C_ALL_INSTANCE(FMPI2Cx)); if (FMPI2Cx == FMPI2C1) { /* Force reset of FMPI2C clock */ LL_APB1_GRP1_ForceReset(LL_APB1_GRP1_PERIPH_FMPI2C1); /* Release reset of FMPI2C clock */ LL_APB1_GRP1_ReleaseReset(LL_APB1_GRP1_PERIPH_FMPI2C1); } else { status = ERROR; } return status; } /** * @brief Initialize the FMPI2C registers according to the specified parameters in FMPI2C_InitStruct. * @param FMPI2Cx FMPI2C Instance. * @param FMPI2C_InitStruct pointer to a @ref LL_FMPI2C_InitTypeDef structure. * @retval An ErrorStatus enumeration value: * - SUCCESS: FMPI2C registers are initialized * - ERROR: Not applicable */ ErrorStatus LL_FMPI2C_Init(FMPI2C_TypeDef *FMPI2Cx, const LL_FMPI2C_InitTypeDef *FMPI2C_InitStruct) { /* Check the FMPI2C Instance FMPI2Cx */ assert_param(IS_FMPI2C_ALL_INSTANCE(FMPI2Cx)); /* Check the FMPI2C parameters from FMPI2C_InitStruct */ assert_param(IS_LL_FMPI2C_PERIPHERAL_MODE(FMPI2C_InitStruct->PeripheralMode)); assert_param(IS_LL_FMPI2C_ANALOG_FILTER(FMPI2C_InitStruct->AnalogFilter)); assert_param(IS_LL_FMPI2C_DIGITAL_FILTER(FMPI2C_InitStruct->DigitalFilter)); assert_param(IS_LL_FMPI2C_OWN_ADDRESS1(FMPI2C_InitStruct->OwnAddress1)); assert_param(IS_LL_FMPI2C_TYPE_ACKNOWLEDGE(FMPI2C_InitStruct->TypeAcknowledge)); assert_param(IS_LL_FMPI2C_OWN_ADDRSIZE(FMPI2C_InitStruct->OwnAddrSize)); /* Disable the selected FMPI2Cx Peripheral */ LL_FMPI2C_Disable(FMPI2Cx); /*---------------------------- FMPI2Cx CR1 Configuration ------------------------ * Configure the analog and digital noise filters with parameters : * - AnalogFilter: FMPI2C_CR1_ANFOFF bit * - DigitalFilter: FMPI2C_CR1_DNF[3:0] bits */ LL_FMPI2C_ConfigFilters(FMPI2Cx, FMPI2C_InitStruct->AnalogFilter, FMPI2C_InitStruct->DigitalFilter); /*---------------------------- FMPI2Cx TIMINGR Configuration -------------------- * Configure the SDA setup, hold time and the SCL high, low period with parameter : * - Timing: FMPI2C_TIMINGR_PRESC[3:0], FMPI2C_TIMINGR_SCLDEL[3:0], FMPI2C_TIMINGR_SDADEL[3:0], * FMPI2C_TIMINGR_SCLH[7:0] and FMPI2C_TIMINGR_SCLL[7:0] bits */ LL_FMPI2C_SetTiming(FMPI2Cx, FMPI2C_InitStruct->Timing); /* Enable the selected FMPI2Cx Peripheral */ LL_FMPI2C_Enable(FMPI2Cx); /*---------------------------- FMPI2Cx OAR1 Configuration ----------------------- * Disable, Configure and Enable FMPI2Cx device own address 1 with parameters : * - OwnAddress1: FMPI2C_OAR1_OA1[9:0] bits * - OwnAddrSize: FMPI2C_OAR1_OA1MODE bit */ LL_FMPI2C_DisableOwnAddress1(FMPI2Cx); LL_FMPI2C_SetOwnAddress1(FMPI2Cx, FMPI2C_InitStruct->OwnAddress1, FMPI2C_InitStruct->OwnAddrSize); /* OwnAdress1 == 0 is reserved for General Call address */ if (FMPI2C_InitStruct->OwnAddress1 != 0U) { LL_FMPI2C_EnableOwnAddress1(FMPI2Cx); } /*---------------------------- FMPI2Cx MODE Configuration ----------------------- * Configure FMPI2Cx peripheral mode with parameter : * - PeripheralMode: FMPI2C_CR1_SMBDEN and FMPI2C_CR1_SMBHEN bits */ LL_FMPI2C_SetMode(FMPI2Cx, FMPI2C_InitStruct->PeripheralMode); /*---------------------------- FMPI2Cx CR2 Configuration ------------------------ * Configure the ACKnowledge or Non ACKnowledge condition * after the address receive match code or next received byte with parameter : * - TypeAcknowledge: FMPI2C_CR2_NACK bit */ LL_FMPI2C_AcknowledgeNextData(FMPI2Cx, FMPI2C_InitStruct->TypeAcknowledge); return SUCCESS; } /** * @brief Set each @ref LL_FMPI2C_InitTypeDef field to default value. * @param FMPI2C_InitStruct Pointer to a @ref LL_FMPI2C_InitTypeDef structure. * @retval None */ void LL_FMPI2C_StructInit(LL_FMPI2C_InitTypeDef *FMPI2C_InitStruct) { /* Set FMPI2C_InitStruct fields to default values */ FMPI2C_InitStruct->PeripheralMode = LL_FMPI2C_MODE_I2C; FMPI2C_InitStruct->Timing = 0U; FMPI2C_InitStruct->AnalogFilter = LL_FMPI2C_ANALOGFILTER_ENABLE; FMPI2C_InitStruct->DigitalFilter = 0U; FMPI2C_InitStruct->OwnAddress1 = 0U; FMPI2C_InitStruct->TypeAcknowledge = LL_FMPI2C_NACK; FMPI2C_InitStruct->OwnAddrSize = LL_FMPI2C_OWNADDRESS1_7BIT; } /** * @} */ /** * @} */ /** * @} */ #endif /* FMPI2C1 */ /** * @} */ #endif /* FMPI2C_CR1_PE */ #endif /* USE_FULL_LL_DRIVER */