/** ****************************************************************************** * @file stm32f411e_discovery.c * @author MCD Application Team * @brief This file provides set of firmware functions to manage LEDs and * push-button available on STM32F411-Discovery Kit from STMicroelectronics. ****************************************************************************** * @attention * * Copyright (c) 2017 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. * ****************************************************************************** *//* ... */ /* Includes ------------------------------------------------------------------*/ #include "stm32f411e_discovery.h" /** @defgroup BSP BSP * @{ *//* ... */ /** @defgroup STM32F411E_DISCOVERY STM32F411E discovery * @{ *//* ... */ /** @defgroup STM32F411E_discovery_LOW_LEVEL STM32F411E discovery LOW LEVEL * @brief This file provides set of firmware functions to manage Leds and push-button * available on STM32F411-Discovery Kit from STMicroelectronics. * @{ *//* ... */ /** @defgroup STM32F411E_discovery_LOW_LEVEL_Private_TypesDefinitions STM32F411E discovery LOW LEVEL Privat TypesDefinitions * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup STM32F411E_discovery_LOW_LEVEL_Private_Defines STM32F411E discovery LOW LEVEL Private Defines * @{ *//* ... */ /** * @brief STM32F411E DISCO BSP Driver version number V1.0.6 *//* ... */ #define __STM32F411E_DISCO_BSP_VERSION_MAIN (0x01) /*!< [31:24] main version */ #define __STM32F411E_DISCO_BSP_VERSION_SUB1 (0x00) /*!< [23:16] sub1 version */ #define __STM32F411E_DISCO_BSP_VERSION_SUB2 (0x06) /*!< [15:8] sub2 version */ #define __STM32F411E_DISCO_BSP_VERSION_RC (0x00) /*!< [7:0] release candidate */ #define __STM32F411E_DISCO_BSP_VERSION ((__STM32F411E_DISCO_BSP_VERSION_MAIN << 24)\ |(__STM32F411E_DISCO_BSP_VERSION_SUB1 << 16)\ |(__STM32F411E_DISCO_BSP_VERSION_SUB2 << 8 )\ |(__STM32F411E_DISCO_BSP_VERSION_RC))... 5 defines/** * @} *//* ... */ /** @defgroup STM32F411E_discovery_LOW_LEVEL_Private_Macros STM32F411E discovery LOW LEVEL Private Macros * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup STM32F411E_discovery_LOW_LEVEL_Private_Variables STM32F411E discovery LOW LEVEL Private Variables * @{ *//* ... */ GPIO_TypeDef* GPIO_PORT[LEDn] = {LED4_GPIO_PORT, LED3_GPIO_PORT, LED5_GPIO_PORT, LED6_GPIO_PORT...}; const uint16_t GPIO_PIN[LEDn] = {LED4_PIN, LED3_PIN, LED5_PIN, LED6_PIN...}; GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {KEY_BUTTON_GPIO_PORT}; const uint16_t BUTTON_PIN[BUTTONn] = {KEY_BUTTON_PIN}; const uint8_t BUTTON_IRQn[BUTTONn] = {KEY_BUTTON_EXTI_IRQn}; uint32_t I2cxTimeout = I2Cx_TIMEOUT_MAX; /*<! Value of Timeout when I2C communication fails */ uint32_t SpixTimeout = SPIx_TIMEOUT_MAX; /*<! Value of Timeout when SPI communication fails */ static I2C_HandleTypeDef I2cHandle; static SPI_HandleTypeDef SpiHandle; /** * @} *//* ... */ /** @defgroup STM32F411E_discovery_LOW_LEVEL_Private_FunctionPrototypes STM32F411E discovery LOW LEVEL Private FunctionPrototypes * @{ *//* ... */ /* I2Cx bus function */ static void I2Cx_Init(void); static void I2Cx_WriteData(uint16_t Addr, uint8_t Reg, uint8_t Value); static uint8_t I2Cx_ReadData(uint16_t Addr, uint8_t Reg); static void I2Cx_Error (void); static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c); /* SPIx bus function */ static void SPIx_Init(void); static uint8_t SPIx_WriteRead(uint8_t byte); static void SPIx_Error (void); static void SPIx_MspInit(SPI_HandleTypeDef *hspi); /* Link function for GYRO peripheral */ void GYRO_IO_Init(void); void GYRO_IO_Write(uint8_t* pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite); void GYRO_IO_Read(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead); /* Link functions for AUDIO */ void AUDIO_IO_Init(void); void AUDIO_IO_DeInit(void); void AUDIO_IO_Write(uint8_t Addr, uint8_t Reg, uint8_t Value); uint8_t AUDIO_IO_Read(uint8_t Addr, uint8_t Reg); /* Link function for COMPASS / ACCELERO peripheral */ void COMPASSACCELERO_IO_Init(void); void COMPASSACCELERO_IO_ITConfig(void); void COMPASSACCELERO_IO_Write(uint16_t DeviceAddr, uint8_t RegisterAddr, uint8_t Value); uint8_t COMPASSACCELERO_IO_Read(uint16_t DeviceAddr, uint8_t RegisterAddr); /** * @} *//* ... */ /** @defgroup STM32F411E_discovery_LOW_LEVEL_Private_Functions STM32F411E discovery LOW LEVEL Private Functions * @{ *//* ... */ /** * @brief This method returns the STM32F411 DISCO BSP Driver revision * @retval version: 0xXYZR (8bits for each decimal, R for RC) *//* ... */ uint32_t BSP_GetVersion(void) { return __STM32F411E_DISCO_BSP_VERSION; }{ ... } /** * @brief Configures LED GPIO. * @param Led: Specifies the Led to be configured. * This parameter can be one of following parameters: * @arg LED4 * @arg LED3 * @arg LED5 * @arg LED6 *//* ... */ void BSP_LED_Init(Led_TypeDef Led) { GPIO_InitTypeDef GPIO_InitStruct; /* Enable the GPIO_LED Clock */ LEDx_GPIO_CLK_ENABLE(Led); /* Configure the GPIO_LED pin */ GPIO_InitStruct.Pin = GPIO_PIN[Led]; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FAST; HAL_GPIO_Init(GPIO_PORT[Led], &GPIO_InitStruct); HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_RESET); }{ ... } /** * @brief Turns selected LED On. * @param Led: Specifies the Led to be set on. * This parameter can be one of following parameters: * @arg LED4 * @arg LED3 * @arg LED5 * @arg LED6 *//* ... */ void BSP_LED_On(Led_TypeDef Led) { HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_SET); }{ ... } /** * @brief Turns selected LED Off. * @param Led: Specifies the Led to be set off. * This parameter can be one of following parameters: * @arg LED4 * @arg LED3 * @arg LED5 * @arg LED6 *//* ... */ void BSP_LED_Off(Led_TypeDef Led) { HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_RESET); }{ ... } /** * @brief Toggles the selected LED. * @param Led: Specifies the Led to be toggled. * This parameter can be one of following parameters: * @arg LED4 * @arg LED3 * @arg LED5 * @arg LED6 *//* ... */ void BSP_LED_Toggle(Led_TypeDef Led) { HAL_GPIO_TogglePin(GPIO_PORT[Led], GPIO_PIN[Led]); }{ ... } /** * @brief Configures Button GPIO and EXTI Line. * @param Button: Specifies the Button to be configured. * This parameter should be: BUTTON_KEY * @param ButtonMode: Specifies Button mode. * This parameter can be one of following parameters: * @arg BUTTON_MODE_GPIO: Button will be used as simple IO * @arg BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt * generation capability *//* ... */ void BSP_PB_Init(Button_TypeDef Button, ButtonMode_TypeDef ButtonMode) { GPIO_InitTypeDef GPIO_InitStruct; /* Enable the BUTTON Clock */ BUTTONx_GPIO_CLK_ENABLE(Button); if(ButtonMode == BUTTON_MODE_GPIO) { /* Configure Button pin as input */ GPIO_InitStruct.Pin = BUTTON_PIN[Button]; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_PULLDOWN; GPIO_InitStruct.Speed = GPIO_SPEED_FAST; HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStruct); }if (ButtonMode == BUTTON_MODE_GPIO) { ... } if(ButtonMode == BUTTON_MODE_EXTI) { /* Configure Button pin as input with External interrupt */ GPIO_InitStruct.Pin = BUTTON_PIN[Button]; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING; HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStruct); /* Enable and set Button EXTI Interrupt to the lowest priority */ HAL_NVIC_SetPriority((IRQn_Type)(BUTTON_IRQn[Button]), 0x0F, 0x00); HAL_NVIC_EnableIRQ((IRQn_Type)(BUTTON_IRQn[Button])); }if (ButtonMode == BUTTON_MODE_EXTI) { ... } }{ ... } /** * @brief Returns the selected Button state. * @param Button: Specifies the Button to be checked. * This parameter should be: BUTTON_KEY * @retval The Button GPIO pin value. *//* ... */ uint32_t BSP_PB_GetState(Button_TypeDef Button) { return HAL_GPIO_ReadPin(BUTTON_PORT[Button], BUTTON_PIN[Button]); }{ ... } /******************************************************************************* BUS OPERATIONS *******************************************************************************//* ... */ /******************************* I2C Routines *********************************/ /** * @brief I2Cx Bus initialization. *//* ... */ static void I2Cx_Init(void) { if(HAL_I2C_GetState(&I2cHandle) == HAL_I2C_STATE_RESET) { I2cHandle.Instance = DISCOVERY_I2Cx; I2cHandle.Init.OwnAddress1 = 0x43; I2cHandle.Init.ClockSpeed = I2Cx_MAX_COMMUNICATION_FREQ; I2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_2; I2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT; I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED; I2cHandle.Init.OwnAddress2 = 0x00; I2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED; I2cHandle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED; /* Init the I2C */ I2Cx_MspInit(&I2cHandle); HAL_I2C_Init(&I2cHandle); }if (HAL_I2C_GetState(&I2cHandle) == HAL_I2C_STATE_RESET) { ... } }{ ... } /** * @brief Writes a value in a register of the device through BUS. * @param Addr: Device address on BUS Bus. * @param Reg: The target register address to write * @param Value: The target register value to be written *//* ... */ static void I2Cx_WriteData(uint16_t Addr, uint8_t Reg, uint8_t Value) { HAL_StatusTypeDef status = HAL_OK; status = HAL_I2C_Mem_Write(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, &Value, 1, I2cxTimeout); /* Check the communication status */ if(status != HAL_OK) { /* Execute user timeout callback */ I2Cx_Error(); }if (status != HAL_OK) { ... } }{ ... } /** * @brief Reads a register of the device through BUS. * @param Addr: Device address on BUS Bus. * @param Reg: The target register address to write * @retval Data read at register address *//* ... */ static uint8_t I2Cx_ReadData(uint16_t Addr, uint8_t Reg) { HAL_StatusTypeDef status = HAL_OK; uint8_t value = 0; status = HAL_I2C_Mem_Read(&I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_8BIT, &value, 1, I2cxTimeout); /* Check the communication status */ if(status != HAL_OK) { /* Execute user timeout callback */ I2Cx_Error(); }if (status != HAL_OK) { ... } return value; }{ ... } /** * @brief I2Cx error treatment function. *//* ... */ static void I2Cx_Error(void) { /* De-initialize the I2C communication BUS */ HAL_I2C_DeInit(&I2cHandle); /* Re- Initiaize the I2C communication BUS */ I2Cx_Init(); }{ ... } /** * @brief I2Cx MSP Init. * @param hi2c: I2C handle *//* ... */ static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c) { GPIO_InitTypeDef GPIO_InitStructure; /* Enable the I2C peripheral */ DISCOVERY_I2Cx_CLOCK_ENABLE(); /* Enable SCK and SDA GPIO clocks */ DISCOVERY_I2Cx_GPIO_CLK_ENABLE(); /* I2Cx SD1 & SCK pin configuration */ GPIO_InitStructure.Pin = DISCOVERY_I2Cx_SDA_PIN | DISCOVERY_I2Cx_SCL_PIN; GPIO_InitStructure.Mode = GPIO_MODE_AF_OD; GPIO_InitStructure.Pull = GPIO_NOPULL; GPIO_InitStructure.Speed = GPIO_SPEED_FAST; GPIO_InitStructure.Alternate = DISCOVERY_I2Cx_AF; HAL_GPIO_Init(DISCOVERY_I2Cx_GPIO_PORT, &GPIO_InitStructure); /* Force the I2C peripheral clock reset */ DISCOVERY_I2Cx_FORCE_RESET(); /* Release the I2C peripheral clock reset */ DISCOVERY_I2Cx_RELEASE_RESET(); /* Enable and set I2Cx Interrupt to the lowest priority */ HAL_NVIC_SetPriority(DISCOVERY_I2Cx_EV_IRQn, 0x0F, 0); HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_EV_IRQn); /* Enable and set I2Cx Interrupt to the lowest priority */ HAL_NVIC_SetPriority(DISCOVERY_I2Cx_ER_IRQn, 0x0F, 0); HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_ER_IRQn); }{ ... } I2C Routines /******************************* SPI Routines**********************************/ /** * @brief SPIx Bus initialization. *//* ... */ static void SPIx_Init(void) { if(HAL_SPI_GetState(&SpiHandle) == HAL_SPI_STATE_RESET) { /* SPI Configuration */ SpiHandle.Instance = DISCOVERY_SPIx; /* SPI baudrate is set to 5.6 MHz (PCLK2/SPI_BaudRatePrescaler = 90/16 = 5.625 MHz) to verify these constraints: ILI9341 LCD SPI interface max baudrate is 10MHz for write and 6.66MHz for read L3GD20 SPI interface max baudrate is 10MHz for write/read PCLK2 frequency is set to 90 MHz *//* ... */ SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8; SpiHandle.Init.Direction = SPI_DIRECTION_2LINES; SpiHandle.Init.CLKPhase = SPI_PHASE_1EDGE; SpiHandle.Init.CLKPolarity = SPI_POLARITY_LOW; SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED; SpiHandle.Init.CRCPolynomial = 7; SpiHandle.Init.DataSize = SPI_DATASIZE_8BIT; SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB; SpiHandle.Init.NSS = SPI_NSS_SOFT; SpiHandle.Init.TIMode = SPI_TIMODE_DISABLED; SpiHandle.Init.Mode = SPI_MODE_MASTER; SPIx_MspInit(&SpiHandle); HAL_SPI_Init(&SpiHandle); }if (HAL_SPI_GetState(&SpiHandle) == HAL_SPI_STATE_RESET) { ... } }{ ... } /** * @brief Sends a Byte through the SPI interface and return the Byte received * from the SPI bus. * @param Byte: Byte send. * @retval The received byte value *//* ... */ static uint8_t SPIx_WriteRead(uint8_t Byte) { uint8_t receivedbyte = 0; /* Send a Byte through the SPI peripheral */ /* Read byte from the SPI bus */ if(HAL_SPI_TransmitReceive(&SpiHandle, (uint8_t*) &Byte, (uint8_t*) &receivedbyte, 1, SpixTimeout) != HAL_OK) { SPIx_Error(); }if (HAL_SPI_TransmitReceive(&SpiHandle, (uint8_t*) &Byte, (uint8_t*) &receivedbyte, 1, SpixTimeout) != HAL_OK) { ... } return receivedbyte; }{ ... } /** * @brief SPIx error treatment function. *//* ... */ static void SPIx_Error (void) { /* De-initialize the SPI communication BUS */ HAL_SPI_DeInit(&SpiHandle); /* Re-Initiaize the SPI communication BUS */ SPIx_Init(); }{ ... } /** * @brief SPI MSP Init. * @param hspi: SPI handle *//* ... */ static void SPIx_MspInit(SPI_HandleTypeDef *hspi) { GPIO_InitTypeDef GPIO_InitStructure; /* Enable SPIx clock */ DISCOVERY_SPIx_CLOCK_ENABLE(); /* Enable SPIx GPIO clock */ DISCOVERY_SPIx_GPIO_CLK_ENABLE(); /* Configure SPIx SCK, MOSI and MISO */ GPIO_InitStructure.Pin = (DISCOVERY_SPIx_SCK_PIN | DISCOVERY_SPIx_MOSI_PIN | DISCOVERY_SPIx_MISO_PIN); GPIO_InitStructure.Mode = GPIO_MODE_AF_PP; GPIO_InitStructure.Pull = GPIO_PULLDOWN; GPIO_InitStructure.Speed = GPIO_SPEED_MEDIUM; GPIO_InitStructure.Alternate = DISCOVERY_SPIx_AF; HAL_GPIO_Init(DISCOVERY_SPIx_GPIO_PORT, &GPIO_InitStructure); }{ ... } /******************************************************************************* LINK OPERATIONS *******************************************************************************//* ... */ SPI Routines /********************************* LINK GYROSCOPE *****************************/ /** * @brief Configures the GYRO SPI interface. *//* ... */ void GYRO_IO_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; /* Configure the Gyroscope Control pins ------------------------------------*/ /* Enable CS GPIO clock and Configure GPIO PIN for Gyroscope Chip select */ GYRO_CS_GPIO_CLK_ENABLE(); GPIO_InitStructure.Pin = GYRO_CS_PIN; GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStructure.Pull = GPIO_NOPULL; GPIO_InitStructure.Speed = GPIO_SPEED_MEDIUM; HAL_GPIO_Init(GYRO_CS_GPIO_PORT, &GPIO_InitStructure); /* Deselect : Chip Select high */ GYRO_CS_HIGH(); /* Enable INT1, INT2 GPIO clock and Configure GPIO PINs to detect Interrupts */ GYRO_INT_GPIO_CLK_ENABLE(); GPIO_InitStructure.Pin = GYRO_INT1_PIN | GYRO_INT2_PIN; GPIO_InitStructure.Mode = GPIO_MODE_INPUT; GPIO_InitStructure.Speed = GPIO_SPEED_FAST; GPIO_InitStructure.Pull= GPIO_NOPULL; HAL_GPIO_Init(GYRO_INT_GPIO_PORT, &GPIO_InitStructure); SPIx_Init(); }{ ... } /** * @brief Writes one byte to the GYRO. * @param pBuffer: pointer to the buffer containing the data to be written to the GYRO. * @param WriteAddr : GYRO's internal address to write to. * @param NumByteToWrite: Number of bytes to write. *//* ... */ void GYRO_IO_Write(uint8_t* pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite) { /* Configure the MS bit: - When 0, the address will remain unchanged in multiple read/write commands. - When 1, the address will be auto incremented in multiple read/write commands. *//* ... */ if(NumByteToWrite > 0x01) { WriteAddr |= (uint8_t)MULTIPLEBYTE_CMD; }if (NumByteToWrite > 0x01) { ... } /* Set chip select Low at the start of the transmission */ GYRO_CS_LOW(); /* Send the Address of the indexed register */ SPIx_WriteRead(WriteAddr); /* Send the data that will be written into the device (MSB First) */ while(NumByteToWrite >= 0x01) { SPIx_WriteRead(*pBuffer); NumByteToWrite--; pBuffer++; }while (NumByteToWrite >= 0x01) { ... } /* Set chip select High at the end of the transmission */ GYRO_CS_HIGH(); }{ ... } /** * @brief Reads a block of data from the GYRO. * @param pBuffer: pointer to the buffer that receives the data read from the GYRO. * @param ReadAddr: GYRO's internal address to read from. * @param NumByteToRead: Number of bytes to read from the GYRO. *//* ... */ void GYRO_IO_Read(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead) { if(NumByteToRead > 0x01) { ReadAddr |= (uint8_t)(READWRITE_CMD | MULTIPLEBYTE_CMD); }if (NumByteToRead > 0x01) { ... } else { ReadAddr |= (uint8_t)READWRITE_CMD; }else { ... } /* Set chip select Low at the start of the transmission */ GYRO_CS_LOW(); /* Send the Address of the indexed register */ SPIx_WriteRead(ReadAddr); /* Receive the data that will be read from the device (MSB First) */ while(NumByteToRead > 0x00) { /* Send dummy byte (0x00) to generate the SPI clock to GYRO (Slave device) */ *pBuffer = SPIx_WriteRead(DUMMY_BYTE); NumByteToRead--; pBuffer++; }while (NumByteToRead > 0x00) { ... } /* Set chip select High at the end of the transmission */ GYRO_CS_HIGH(); }{ ... } /********************************* LINK AUDIO *********************************/ /** * @brief Initializes Audio low level. *//* ... */ void AUDIO_IO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct; /* Enable Reset GPIO Clock */ AUDIO_RESET_GPIO_CLK_ENABLE(); /* Audio reset pin configuration -------------------------------------------*/ GPIO_InitStruct.Pin = AUDIO_RESET_PIN; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FAST; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(AUDIO_RESET_GPIO, &GPIO_InitStruct); I2Cx_Init(); /* Power Down the codec */ CODEC_AUDIO_POWER_OFF(); /* Wait for a delay to insure registers erasing */ HAL_Delay(5); /* Power on the codec */ CODEC_AUDIO_POWER_ON(); /* Wait for a delay to insure registers erasing */ HAL_Delay(5); }{ ... } /** * @brief DeInitializes Audio low level. *//* ... */ void AUDIO_IO_DeInit(void) { }{ ... } /** * @brief Writes a single data. * @param Addr: I2C address * @param Reg: Reg address * @param Value: Data to be written *//* ... */ void AUDIO_IO_Write (uint8_t Addr, uint8_t Reg, uint8_t Value) { I2Cx_WriteData(Addr, Reg, Value); }{ ... } /** * @brief Reads a single data. * @param Addr: I2C address * @param Reg: Reg address * @retval Data to be read *//* ... */ uint8_t AUDIO_IO_Read (uint8_t Addr, uint8_t Reg) { return I2Cx_ReadData(Addr, Reg); }{ ... } LINK AUDIO /****************************** LINK ACCELEROMETER ****************************/ /** * @brief Configures COMPASS / ACCELERO I2C interface. *//* ... */ void COMPASSACCELERO_IO_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; /* Enable DRDY clock */ ACCELERO_DRDY_GPIO_CLK_ENABLE(); /* MEMS DRDY pin configuration */ GPIO_InitStructure.Pin = ACCELERO_DRDY_PIN; GPIO_InitStructure.Mode = GPIO_MODE_INPUT; GPIO_InitStructure.Pull = GPIO_NOPULL; GPIO_InitStructure.Speed = GPIO_SPEED_FAST; HAL_GPIO_Init(ACCELERO_DRDY_GPIO_PORT, &GPIO_InitStructure); I2Cx_Init(); }{ ... } /** * @brief Configures COMPASS / ACCELERO click IT. *//* ... */ void COMPASSACCELERO_IO_ITConfig(void) { GPIO_InitTypeDef GPIO_InitStructure; /* Enable INT1 and INT2 GPIO clock */ ACCELERO_INT_GPIO_CLK_ENABLE(); /* Configure GPIO PINs to detect Interrupts */ GPIO_InitStructure.Pin = ACCELERO_INT1_PIN | ACCELERO_INT2_PIN; GPIO_InitStructure.Mode = GPIO_MODE_IT_RISING; GPIO_InitStructure.Speed = GPIO_SPEED_FAST; GPIO_InitStructure.Pull = GPIO_NOPULL; HAL_GPIO_Init(ACCELERO_INT_GPIO_PORT, &GPIO_InitStructure); /* Enable and set COMPASS / ACCELERO Interrupt to the lowest priority */ HAL_NVIC_SetPriority(ACCELERO_INT1_EXTI_IRQn, 0x0F, 0x00); HAL_NVIC_EnableIRQ(ACCELERO_INT1_EXTI_IRQn); }{ ... } /** * @brief Writes one byte to the COMPASS / ACCELERO. * @param DeviceAddr: the slave address to be programmed * @param RegisterAddr: the COMPASS / ACCELERO register to be written * @param Value: Data to be written *//* ... */ void COMPASSACCELERO_IO_Write(uint16_t DeviceAddr, uint8_t RegisterAddr, uint8_t Value) { /* Call I2Cx Read data bus function */ I2Cx_WriteData(DeviceAddr, RegisterAddr, Value); }{ ... } /** * @brief Reads a block of data from the COMPASS / ACCELERO. * @param DeviceAddr: the slave address to be programmed(ACC_I2C_ADDRESS or MAG_I2C_ADDRESS). * @param RegisterAddr: the COMPASS / ACCELERO internal address register to read from * @retval COMPASS / ACCELERO register value *//* ... */ uint8_t COMPASSACCELERO_IO_Read(uint16_t DeviceAddr, uint8_t RegisterAddr) { /* Call I2Cx Read data bus function */ return I2Cx_ReadData(DeviceAddr, RegisterAddr); }{ ... } /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */