/** ****************************************************************************** * @file stm32f429i_discovery.c * @author MCD Application Team * @brief This file provides set of firmware functions to manage Leds and * push-button available on STM32F429I-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 "stm32f429i_discovery.h" /** @defgroup BSP BSP * @{ *//* ... */ /** @defgroup STM32F429I_DISCOVERY STM32F429I DISCOVERY * @{ *//* ... */ /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL STM32F429I DISCOVERY LOW LEVEL * @brief This file provides set of firmware functions to manage Leds and push-button * available on STM32F429I-Discovery Kit from STMicroelectronics. * @{ *//* ... */ /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_TypesDefinitions STM32F429I DISCOVERY LOW LEVEL Private TypesDefinitions * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Defines STM32F429I DISCOVERY LOW LEVEL Private Defines * @{ *//* ... */ /** * @brief STM32F429I DISCO BSP Driver version number V2.1.8 *//* ... */ #define __STM32F429I_DISCO_BSP_VERSION_MAIN (0x02) /*!< [31:24] main version */ #define __STM32F429I_DISCO_BSP_VERSION_SUB1 (0x01) /*!< [23:16] sub1 version */ #define __STM32F429I_DISCO_BSP_VERSION_SUB2 (0x08) /*!< [15:8] sub2 version */ #define __STM32F429I_DISCO_BSP_VERSION_RC (0x00) /*!< [7:0] release candidate */ #define __STM32F429I_DISCO_BSP_VERSION ((__STM32F429I_DISCO_BSP_VERSION_MAIN << 24)\ |(__STM32F429I_DISCO_BSP_VERSION_SUB1 << 16)\ |(__STM32F429I_DISCO_BSP_VERSION_SUB2 << 8 )\ |(__STM32F429I_DISCO_BSP_VERSION_RC))... 5 defines/** * @} *//* ... */ /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Macros STM32F429I DISCOVERY LOW LEVEL Private Macros * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Variables STM32F429I DISCOVERY LOW LEVEL Private Variables * @{ *//* ... */ GPIO_TypeDef *GPIO_PORT[LEDn] = {LED3_GPIO_PORT, LED4_GPIO_PORT ...}; const uint16_t GPIO_PIN[LEDn] = {LED3_PIN, LED4_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 */ I2C_HandleTypeDef I2cHandle; static SPI_HandleTypeDef SpiHandle; static uint8_t Is_LCD_IO_Initialized = 0; /** * @} *//* ... */ /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_FunctionPrototypes STM32F429I DISCOVERY LOW LEVEL Private FunctionPrototypes * @{ *//* ... */ /* I2Cx bus function */ static void I2Cx_Init(void); static void I2Cx_ITConfig(void); static void I2Cx_WriteData(uint8_t Addr, uint8_t Reg, uint8_t Value); static void I2Cx_WriteBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length); static uint8_t I2Cx_ReadData(uint8_t Addr, uint8_t Reg); static uint8_t I2Cx_ReadBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length); static void I2Cx_Error(void); static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c); #ifdef EE_M24LR64 static HAL_StatusTypeDef I2Cx_WriteBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length); static HAL_StatusTypeDef I2Cx_ReadBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length); static HAL_StatusTypeDef I2Cx_IsDeviceReady(uint16_t DevAddress, uint32_t Trials);/* ... */ #endif /* EE_M24LR64 */ /* SPIx bus function */ static void SPIx_Init(void); static void SPIx_Write(uint16_t Value); static uint32_t SPIx_Read(uint8_t ReadSize); static uint8_t SPIx_WriteRead(uint8_t Byte); static void SPIx_Error(void); static void SPIx_MspInit(SPI_HandleTypeDef *hspi); /* Link function for LCD peripheral */ void LCD_IO_Init(void); void LCD_IO_WriteData(uint16_t RegValue); void LCD_IO_WriteReg(uint8_t Reg); uint32_t LCD_IO_ReadData(uint16_t RegValue, uint8_t ReadSize); void LCD_Delay(uint32_t delay); /* IOExpander IO functions */ void IOE_Init(void); void IOE_ITConfig(void); void IOE_Delay(uint32_t Delay); void IOE_Write(uint8_t Addr, uint8_t Reg, uint8_t Value); uint8_t IOE_Read(uint8_t Addr, uint8_t Reg); uint16_t IOE_ReadMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length); void IOE_WriteMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length); /* 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); #ifdef EE_M24LR64 /* Link function for I2C EEPROM peripheral */ void EEPROM_IO_Init(void); HAL_StatusTypeDef EEPROM_IO_WriteData(uint16_t DevAddress, uint16_t MemAddress, uint8_t *pBuffer, uint32_t BufferSize); HAL_StatusTypeDef EEPROM_IO_ReadData(uint16_t DevAddress, uint16_t MemAddress, uint8_t *pBuffer, uint32_t BufferSize); HAL_StatusTypeDef EEPROM_IO_IsDeviceReady(uint16_t DevAddress, uint32_t Trials);/* ... */ #endif /* EE_M24LR64 */ /** * @} *//* ... */ /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Functions STM32F429I DISCOVERY LOW LEVEL Private Functions * @{ *//* ... */ /** * @brief This method returns the STM32F429I DISCO BSP Driver revision * @retval version: 0xXYZR (8bits for each decimal, R for RC) *//* ... */ uint32_t BSP_GetVersion(void) { return __STM32F429I_DISCO_BSP_VERSION; }{ ... } /** * @brief Configures LED GPIO. * @param Led: Specifies the Led to be configured. * This parameter can be one of following parameters: * @arg LED3 * @arg LED4 *//* ... */ 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 LED3 * @arg LED4 *//* ... */ 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 LED3 * @arg LED4 *//* ... */ 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 LED3 * @arg LED4 *//* ... */ 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 MSP Initialization * @param hi2c: I2C handle *//* ... */ static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c) { GPIO_InitTypeDef GPIO_InitStruct; #ifdef EE_M24LR64 static DMA_HandleTypeDef hdma_tx; static DMA_HandleTypeDef hdma_rx; I2C_HandleTypeDef *pI2cHandle; pI2cHandle = &I2cHandle;/* ... */ #endif /* EE_M24LR64 */ if (hi2c->Instance == DISCOVERY_I2Cx) { /* Configure the GPIOs ---------------------------------------------------*/ /* Enable GPIO clock */ DISCOVERY_I2Cx_SDA_GPIO_CLK_ENABLE(); DISCOVERY_I2Cx_SCL_GPIO_CLK_ENABLE(); /* Configure I2C Tx as alternate function */ GPIO_InitStruct.Pin = DISCOVERY_I2Cx_SCL_PIN; GPIO_InitStruct.Mode = GPIO_MODE_AF_OD; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FAST; GPIO_InitStruct.Alternate = DISCOVERY_I2Cx_SCL_SDA_AF; HAL_GPIO_Init(DISCOVERY_I2Cx_SCL_GPIO_PORT, &GPIO_InitStruct); /* Configure I2C Rx as alternate function */ GPIO_InitStruct.Pin = DISCOVERY_I2Cx_SDA_PIN; HAL_GPIO_Init(DISCOVERY_I2Cx_SDA_GPIO_PORT, &GPIO_InitStruct); Configure the GPIOs /* Configure the Discovery I2Cx peripheral -------------------------------*/ /* Enable I2C3 clock */ DISCOVERY_I2Cx_CLOCK_ENABLE(); /* Force the I2C Peripheral Clock Reset */ DISCOVERY_I2Cx_FORCE_RESET(); /* Release the I2C Peripheral Clock Reset */ DISCOVERY_I2Cx_RELEASE_RESET(); /* Enable and set Discovery 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 Discovery I2Cx Interrupt to the lowest priority */ HAL_NVIC_SetPriority(DISCOVERY_I2Cx_ER_IRQn, 0x0F, 0); HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_ER_IRQn); #ifdef EE_M24LR64 /* I2C DMA TX and RX channels configuration */ /* Enable the DMA clock */ EEPROM_I2C_DMA_CLK_ENABLE(); /* Configure the DMA stream for the EE I2C peripheral TX direction */ /* Configure the DMA Stream */ hdma_tx.Instance = EEPROM_I2C_DMA_STREAM_TX; /* Set the parameters to be configured */ hdma_tx.Init.Channel = EEPROM_I2C_DMA_CHANNEL; hdma_tx.Init.Direction = DMA_MEMORY_TO_PERIPH; hdma_tx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_tx.Init.MemInc = DMA_MINC_ENABLE; hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; hdma_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; hdma_tx.Init.Mode = DMA_NORMAL; hdma_tx.Init.Priority = DMA_PRIORITY_VERY_HIGH; hdma_tx.Init.FIFOMode = DMA_FIFOMODE_ENABLE; hdma_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; hdma_tx.Init.MemBurst = DMA_MBURST_SINGLE; hdma_tx.Init.PeriphBurst = DMA_PBURST_SINGLE; /* Associate the initilalized hdma_tx handle to the the pI2cHandle handle */ __HAL_LINKDMA(pI2cHandle, hdmatx, hdma_tx); /* Configure the DMA Stream */ HAL_DMA_Init(&hdma_tx); /* Configure and enable I2C DMA TX Channel interrupt */ HAL_NVIC_SetPriority((IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn), EEPROM_I2C_DMA_PREPRIO, 0); HAL_NVIC_EnableIRQ((IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn)); /* Configure the DMA stream for the EE I2C peripheral TX direction */ /* Configure the DMA Stream */ hdma_rx.Instance = EEPROM_I2C_DMA_STREAM_RX; /* Set the parameters to be configured */ hdma_rx.Init.Channel = EEPROM_I2C_DMA_CHANNEL; hdma_rx.Init.Direction = DMA_PERIPH_TO_MEMORY; hdma_rx.Init.PeriphInc = DMA_PINC_DISABLE; hdma_rx.Init.MemInc = DMA_MINC_ENABLE; hdma_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE; hdma_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE; hdma_rx.Init.Mode = DMA_NORMAL; hdma_rx.Init.Priority = DMA_PRIORITY_VERY_HIGH; hdma_rx.Init.FIFOMode = DMA_FIFOMODE_ENABLE; hdma_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; hdma_rx.Init.MemBurst = DMA_MBURST_SINGLE; hdma_rx.Init.PeriphBurst = DMA_PBURST_SINGLE; /* Associate the initilalized hdma_rx handle to the the pI2cHandle handle*/ __HAL_LINKDMA(pI2cHandle, hdmarx, hdma_rx); /* Configure the DMA Stream */ HAL_DMA_Init(&hdma_rx); /* Configure and enable I2C DMA RX Channel interrupt */ HAL_NVIC_SetPriority((IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn), EEPROM_I2C_DMA_PREPRIO, 0); HAL_NVIC_EnableIRQ((IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn));/* ... */ #endif /* EE_M24LR64 */ }if (hi2c->Instance == DISCOVERY_I2Cx) { ... } }{ ... } /** * @brief I2Cx Bus initialization. *//* ... */ static void I2Cx_Init(void) { if (HAL_I2C_GetState(&I2cHandle) == HAL_I2C_STATE_RESET) { I2cHandle.Instance = DISCOVERY_I2Cx; I2cHandle.Init.ClockSpeed = BSP_I2C_SPEED; I2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_2; I2cHandle.Init.OwnAddress1 = 0; I2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT; I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED; I2cHandle.Init.OwnAddress2 = 0; 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 Configures Interruption pin for I2C communication. *//* ... */ static void I2Cx_ITConfig(void) { GPIO_InitTypeDef GPIO_InitStruct; /* Enable the GPIO EXTI Clock */ STMPE811_INT_CLK_ENABLE(); GPIO_InitStruct.Pin = STMPE811_INT_PIN; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_LOW; GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING; HAL_GPIO_Init(STMPE811_INT_GPIO_PORT, &GPIO_InitStruct); /* Enable and set GPIO EXTI Interrupt to the highest priority */ HAL_NVIC_SetPriority((IRQn_Type)(STMPE811_INT_EXTI), 0x0F, 0x00); HAL_NVIC_EnableIRQ((IRQn_Type)(STMPE811_INT_EXTI)); }{ ... } /** * @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(uint8_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) { /* Re-Initialize the BUS */ I2Cx_Error(); }if (status != HAL_OK) { ... } }{ ... } /** * @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 pBuffer: The target register value to be written * @param Length: buffer size to be written *//* ... */ static void I2Cx_WriteBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length) { HAL_StatusTypeDef status = HAL_OK; status = HAL_I2C_Mem_Write(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, pBuffer, Length, I2cxTimeout); /* Check the communication status */ if (status != HAL_OK) { /* Re-Initialize the BUS */ 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(uint8_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) { /* Re-Initialize the BUS */ I2Cx_Error(); }if (status != HAL_OK) { ... } return value; }{ ... } /** * @brief Reads multiple data on the BUS. * @param Addr: I2C Address * @param Reg: Reg Address * @param pBuffer: pointer to read data buffer * @param Length: length of the data * @retval 0 if no problems to read multiple data *//* ... */ static uint8_t I2Cx_ReadBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length) { HAL_StatusTypeDef status = HAL_OK; status = HAL_I2C_Mem_Read(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, pBuffer, Length, I2cxTimeout); /* Check the communication status */ if (status == HAL_OK) { return 0; }if (status == HAL_OK) { ... } else { /* Re-Initialize the BUS */ I2Cx_Error(); return 1; }else { ... } }{ ... } #ifdef EE_M24LR64 /** * @brief Writes a value in a register of the device through BUS in using DMA mode. * @param Addr: Device address on BUS Bus. * @param Reg: The target register address to write * @param pBuffer: The target register value to be written * @param Length: buffer size to be written * @retval HAL status *//* ... */ static HAL_StatusTypeDef I2Cx_WriteBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length) { HAL_StatusTypeDef status = HAL_OK; status = HAL_I2C_Mem_Write_DMA(&I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_16BIT, pBuffer, Length); /* Check the communication status */ if (status != HAL_OK) { /* Re-Initialize the BUS */ I2Cx_Error(); }if (status != HAL_OK) { ... } return status; }I2Cx_WriteBufferDMA (uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length) { ... } /** * @brief Reads multiple data on the BUS in using DMA mode. * @param Addr: I2C Address * @param Reg: Reg Address * @param pBuffer: pointer to read data buffer * @param Length: length of the data * @retval HAL status *//* ... */ static HAL_StatusTypeDef I2Cx_ReadBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length) { HAL_StatusTypeDef status = HAL_OK; status = HAL_I2C_Mem_Read_DMA(&I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_16BIT, pBuffer, Length); /* Check the communication status */ if (status != HAL_OK) { /* Re-Initialize the BUS */ I2Cx_Error(); }if (status != HAL_OK) { ... } return status; }I2Cx_ReadBufferDMA (uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length) { ... } /** * @brief Checks if target device is ready for communication. * @note This function is used with Memory devices * @param DevAddress: Target device address * @param Trials: Number of trials * @retval HAL status *//* ... */ static HAL_StatusTypeDef I2Cx_IsDeviceReady(uint16_t DevAddress, uint32_t Trials) { return (HAL_I2C_IsDeviceReady(&I2cHandle, DevAddress, Trials, I2cxTimeout)); }I2Cx_IsDeviceReady (uint16_t DevAddress, uint32_t Trials) { ... } /* ... */#endif /* EE_M24LR64 */ /** * @brief I2Cx error treatment function *//* ... */ static void I2Cx_Error(void) { /* De-initialize the SPI communication BUS */ HAL_I2C_DeInit(&I2cHandle); /* Re-Initialize the SPI communication BUS */ I2Cx_Init(); }{ ... } /******************************* 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_16; /* On STM32F429I-Discovery, LCD ID cannot be read then keep a common configuration */ /* for LCD and GYRO (SPI_DIRECTION_2LINES) */ /* Note: To read a register a LCD, SPI_DIRECTION_1LINE should be set */ 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 Reads 4 bytes from device. * @param ReadSize: Number of bytes to read (max 4 bytes) * @retval Value read on the SPI *//* ... */ static uint32_t SPIx_Read(uint8_t ReadSize) { HAL_StatusTypeDef status = HAL_OK; uint32_t readvalue; status = HAL_SPI_Receive(&SpiHandle, (uint8_t *) &readvalue, ReadSize, SpixTimeout); /* Check the communication status */ if (status != HAL_OK) { /* Re-Initialize the BUS */ SPIx_Error(); }if (status != HAL_OK) { ... } return readvalue; }{ ... } /** * @brief Writes a byte to device. * @param Value: value to be written *//* ... */ static void SPIx_Write(uint16_t Value) { HAL_StatusTypeDef status = HAL_OK; status = HAL_SPI_Transmit(&SpiHandle, (uint8_t *) &Value, 1, SpixTimeout); /* Check the communication status */ if (status != HAL_OK) { /* Re-Initialize the BUS */ SPIx_Error(); }if (status != HAL_OK) { ... } }{ ... } /** * @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- Initialize 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_CLK_ENABLE(); /* Enable DISCOVERY_SPI GPIO clock */ DISCOVERY_SPIx_GPIO_CLK_ENABLE(); /* configure SPI 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); }{ ... } SPI Routines /********************************* LINK LCD ***********************************/ /** * @brief Configures the LCD_SPI interface. *//* ... */ void LCD_IO_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; if (Is_LCD_IO_Initialized == 0) { Is_LCD_IO_Initialized = 1; /* Configure NCS in Output Push-Pull mode */ LCD_WRX_GPIO_CLK_ENABLE(); GPIO_InitStructure.Pin = LCD_WRX_PIN; GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStructure.Pull = GPIO_NOPULL; GPIO_InitStructure.Speed = GPIO_SPEED_FAST; HAL_GPIO_Init(LCD_WRX_GPIO_PORT, &GPIO_InitStructure); LCD_RDX_GPIO_CLK_ENABLE(); GPIO_InitStructure.Pin = LCD_RDX_PIN; GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStructure.Pull = GPIO_NOPULL; GPIO_InitStructure.Speed = GPIO_SPEED_FAST; HAL_GPIO_Init(LCD_RDX_GPIO_PORT, &GPIO_InitStructure); /* Configure the LCD Control pins ----------------------------------------*/ LCD_NCS_GPIO_CLK_ENABLE(); /* Configure NCS in Output Push-Pull mode */ GPIO_InitStructure.Pin = LCD_NCS_PIN; GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStructure.Pull = GPIO_NOPULL; GPIO_InitStructure.Speed = GPIO_SPEED_FAST; HAL_GPIO_Init(LCD_NCS_GPIO_PORT, &GPIO_InitStructure); /* Set or Reset the control line */ LCD_CS_LOW(); LCD_CS_HIGH(); SPIx_Init(); }if (Is_LCD_IO_Initialized == 0) { ... } }{ ... } /** * @brief Writes register value. *//* ... */ void LCD_IO_WriteData(uint16_t RegValue) { /* Set WRX to send data */ LCD_WRX_HIGH(); /* Reset LCD control line(/CS) and Send data */ LCD_CS_LOW(); SPIx_Write(RegValue); /* Deselect: Chip Select high */ LCD_CS_HIGH(); }{ ... } /** * @brief Writes register address. *//* ... */ void LCD_IO_WriteReg(uint8_t Reg) { /* Reset WRX to send command */ LCD_WRX_LOW(); /* Reset LCD control line(/CS) and Send command */ LCD_CS_LOW(); SPIx_Write(Reg); /* Deselect: Chip Select high */ LCD_CS_HIGH(); }{ ... } /** * @brief Reads register value. * @param RegValue Address of the register to read * @param ReadSize Number of bytes to read * @retval Content of the register value *//* ... */ uint32_t LCD_IO_ReadData(uint16_t RegValue, uint8_t ReadSize) { uint32_t readvalue = 0; /* Select: Chip Select low */ LCD_CS_LOW(); /* Reset WRX to send command */ LCD_WRX_LOW(); SPIx_Write(RegValue); readvalue = SPIx_Read(ReadSize); /* Set WRX to send data */ LCD_WRX_HIGH(); /* Deselect: Chip Select high */ LCD_CS_HIGH(); return readvalue; }{ ... } /** * @brief Wait for loop in ms. * @param Delay in ms. *//* ... */ void LCD_Delay(uint32_t Delay) { HAL_Delay(Delay); }{ ... } /******************************************************************************* LINK OPERATIONS *******************************************************************************//* ... */ LINK LCD /********************************* LINK IOE ***********************************/ /** * @brief IOE Low Level Initialization. *//* ... */ void IOE_Init(void) { I2Cx_Init(); }{ ... } /** * @brief IOE Low Level Interrupt configuration. *//* ... */ void IOE_ITConfig(void) { I2Cx_ITConfig(); }{ ... } /** * @brief IOE Writes single data operation. * @param Addr: I2C Address * @param Reg: Reg Address * @param Value: Data to be written *//* ... */ void IOE_Write(uint8_t Addr, uint8_t Reg, uint8_t Value) { I2Cx_WriteData(Addr, Reg, Value); }{ ... } /** * @brief IOE Reads single data. * @param Addr: I2C Address * @param Reg: Reg Address * @retval The read data *//* ... */ uint8_t IOE_Read(uint8_t Addr, uint8_t Reg) { return I2Cx_ReadData(Addr, Reg); }{ ... } /** * @brief IOE Writes multiple data. * @param Addr: I2C Address * @param Reg: Reg Address * @param pBuffer: pointer to data buffer * @param Length: length of the data *//* ... */ void IOE_WriteMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length) { I2Cx_WriteBuffer(Addr, Reg, pBuffer, Length); }{ ... } /** * @brief IOE Reads multiple data. * @param Addr: I2C Address * @param Reg: Reg Address * @param pBuffer: pointer to data buffer * @param Length: length of the data * @retval 0 if no problems to read multiple data *//* ... */ uint16_t IOE_ReadMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length) { return I2Cx_ReadBuffer(Addr, Reg, pBuffer, Length); }{ ... } /** * @brief IOE Delay. * @param Delay in ms *//* ... */ void IOE_Delay(uint32_t Delay) { HAL_Delay(Delay); }{ ... } LINK IOE /********************************* LINK GYROSCOPE *****************************/ /** * @brief Configures the Gyroscope 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 Gyroscope. * @param pBuffer: Pointer to the buffer containing the data to be written to the Gyroscope. * @param WriteAddr: Gyroscope'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 Gyroscope. * @param pBuffer: Pointer to the buffer that receives the data read from the Gyroscope. * @param ReadAddr: Gyroscope's internal address to read from. * @param NumByteToRead: Number of bytes to read from the Gyroscope. *//* ... */ 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 Gyroscope (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(); }{ ... } #ifdef EE_M24LR64 /******************************** LINK I2C EEPROM *****************************/ /** * @brief Initializes peripherals used by the I2C EEPROM driver. *//* ... */ void EEPROM_IO_Init(void) { I2Cx_Init(); }EEPROM_IO_Init (void) { ... } /** * @brief Writes data to I2C EEPROM driver in using DMA channel. * @param DevAddress: Target device address * @param MemAddress: Internal memory address * @param pBuffer: Pointer to data buffer * @param BufferSize: Amount of data to be sent * @retval HAL status *//* ... */ HAL_StatusTypeDef EEPROM_IO_WriteData(uint16_t DevAddress, uint16_t MemAddress, uint8_t *pBuffer, uint32_t BufferSize) { return (I2Cx_WriteBufferDMA(DevAddress, MemAddress, pBuffer, BufferSize)); }EEPROM_IO_WriteData (uint16_t DevAddress, uint16_t MemAddress, uint8_t *pBuffer, uint32_t BufferSize) { ... } /** * @brief Reads data from I2C EEPROM driver in using DMA channel. * @param DevAddress: Target device address * @param MemAddress: Internal memory address * @param pBuffer: Pointer to data buffer * @param BufferSize: Amount of data to be read * @retval HAL status *//* ... */ HAL_StatusTypeDef EEPROM_IO_ReadData(uint16_t DevAddress, uint16_t MemAddress, uint8_t *pBuffer, uint32_t BufferSize) { return (I2Cx_ReadBufferDMA(DevAddress, MemAddress, pBuffer, BufferSize)); }EEPROM_IO_ReadData (uint16_t DevAddress, uint16_t MemAddress, uint8_t *pBuffer, uint32_t BufferSize) { ... } /** * @brief Checks if target device is ready for communication. * @note This function is used with Memory devices * @param DevAddress: Target device address * @param Trials: Number of trials * @retval HAL status *//* ... */ HAL_StatusTypeDef EEPROM_IO_IsDeviceReady(uint16_t DevAddress, uint32_t Trials) { return (I2Cx_IsDeviceReady(DevAddress, Trials)); }EEPROM_IO_IsDeviceReady (uint16_t DevAddress, uint32_t Trials) { ... } /* ... */#endif /* EE_M24LR64 */ /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */