Senior Design: Sound Monitor
Audio Demo with DISCO Board, takes control samples, waits for user input, samples regularly.
Dependencies: CMSIS_DSP_401 STM32L4xx_HAL_Driver mbed-src_DISO_AUDIO_DEMO
Diff: stm32l476g_discovery.c
- Revision:
- 0:3eee9435dd17
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32l476g_discovery.c Sun Dec 13 19:12:11 2015 +0000
@@ -0,0 +1,1772 @@
+/**
+ ******************************************************************************
+ * @file stm32l476g_discovery.c
+ * @author MCD Application Team
+ * @version V1.0.1
+ * @date 16-September-2015
+ * @brief This file provides a set of firmware functions to manage Leds,
+ * push-button and joystick of STM32L476G-Discovery board (MB1184)
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+ *
+ * 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.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l476g_discovery.h"
+
+/** @addtogroup BSP
+ * @{
+ */
+
+/** @defgroup STM32L476G_DISCOVERY STM32L476G-DISCOVERY
+ * @{
+ */
+
+/** @defgroup STM32L476G_DISCOVERY_Common STM32L476G-DISCOVERY Common
+ * @{
+ */
+
+/** @defgroup STM32L476G_DISCOVERY_Private_TypesDefinitions Private Types Definitions
+ * @brief This file provides firmware functions to manage Leds, push-buttons,
+ * COM ports, SD card on SPI and temperature sensor (TS751) available on
+ * STM32L476G-DISCOVERY discoveryuation board from STMicroelectronics.
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup STM32L476G_DISCOVERY_Private_Defines Private Defines
+ * @{
+ */
+
+/**
+ * @brief STM32L476G DISCOVERY BSP Driver version number V1.0.1
+ */
+#define __STM32L476G_DISCOVERY_BSP_VERSION_MAIN (0x01) /*!< [31:24] main version */
+#define __STM32L476G_DISCOVERY_BSP_VERSION_SUB1 (0x00) /*!< [23:16] sub1 version */
+#define __STM32L476G_DISCOVERY_BSP_VERSION_SUB2 (0x01) /*!< [15:8] sub2 version */
+#define __STM32L476G_DISCOVERY_BSP_VERSION_RC (0x00) /*!< [7:0] release candidate */
+#define __STM32L476G_DISCOVERY_BSP_VERSION ((__STM32L476G_DISCOVERY_BSP_VERSION_MAIN << 24)\
+ |(__STM32L476G_DISCOVERY_BSP_VERSION_SUB1 << 16)\
+ |(__STM32L476G_DISCOVERY_BSP_VERSION_SUB2 << 8 )\
+ |(__STM32L476G_DISCOVERY_BSP_VERSION_RC))
+/**
+ * @}
+ */
+
+
+/** @defgroup STM32L476G_DISCOVERY_Private_Macros Private Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+
+/** @defgroup STM32L476G_DISCOVERY_Exported_Variables Exported Variables
+ * @{
+ */
+
+/**
+ * @brief LED variables
+ */
+#if defined (USE_STM32L476G_DISCO_REVC) || defined (USE_STM32L476G_DISCO_REVB)
+GPIO_TypeDef* LED_PORT[LEDn] = {LED4_GPIO_PORT,
+ LED5_GPIO_PORT};
+
+const uint16_t LED_PIN[LEDn] = {LED4_PIN,
+ LED5_PIN};
+#elif defined (USE_STM32L476G_DISCO_REVA)
+GPIO_TypeDef* LED_PORT[LEDn] = {LED3_GPIO_PORT,
+ LED4_GPIO_PORT};
+
+const uint16_t LED_PIN[LEDn] = {LED3_PIN,
+ LED4_PIN};
+#endif
+
+
+/**
+ * @brief JOYSTICK variables
+ */
+ GPIO_TypeDef* JOY_PORT[JOYn] = {SEL_JOY_GPIO_PORT,
+ DOWN_JOY_GPIO_PORT,
+ LEFT_JOY_GPIO_PORT,
+ RIGHT_JOY_GPIO_PORT,
+ UP_JOY_GPIO_PORT};
+
+const uint16_t JOY_PIN[JOYn] = {SEL_JOY_PIN,
+ LEFT_JOY_PIN,
+ RIGHT_JOY_PIN,
+ DOWN_JOY_PIN,
+ UP_JOY_PIN};
+
+const uint8_t JOY_IRQn[JOYn] = {SEL_JOY_EXTI_IRQn,
+ LEFT_JOY_EXTI_IRQn,
+ RIGHT_JOY_EXTI_IRQn,
+ DOWN_JOY_EXTI_IRQn,
+ UP_JOY_EXTI_IRQn};
+
+/**
+ * @brief BUS variables
+ */
+#if defined(HAL_I2C_MODULE_ENABLED)
+uint32_t I2c1Timeout = DISCOVERY_I2C2_TIMEOUT_MAX; /*<! Value of Timeout when I2C1 communication fails */
+uint32_t I2c2Timeout = DISCOVERY_I2C2_TIMEOUT_MAX; /*<! Value of Timeout when I2C2 communication fails */
+static I2C_HandleTypeDef I2c1Handle;
+static I2C_HandleTypeDef I2c2Handle;
+#endif /* HAL_I2C_MODULE_ENABLED */
+
+#if defined(HAL_SPI_MODULE_ENABLED)
+
+/* LL definition */
+#define __SPI_DIRECTION_2LINES(__HANDLE__) do{\
+ CLEAR_BIT((__HANDLE__)->Instance->CR1, SPI_CR1_RXONLY | SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE);\
+ }while(0);
+
+#define __SPI_DIRECTION_2LINES_RXONLY(__HANDLE__) do{\
+ CLEAR_BIT((__HANDLE__)->Instance->CR1, SPI_CR1_RXONLY | SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE);\
+ SET_BIT((__HANDLE__)->Instance->CR1, SPI_CR1_RXONLY);\
+ }while(0);
+
+#define __SPI_DIRECTION_1LINE_TX(__HANDLE__) do{\
+ CLEAR_BIT((__HANDLE__)->Instance->CR1, SPI_CR1_RXONLY | SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE);\
+ SET_BIT((__HANDLE__)->Instance->CR1, SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE);\
+ }while(0);
+
+#define __SPI_DIRECTION_1LINE_RX(__HANDLE__) do {\
+ CLEAR_BIT((__HANDLE__)->Instance->CR1, SPI_CR1_RXONLY | SPI_CR1_BIDIMODE | SPI_CR1_BIDIOE);\
+ SET_BIT((__HANDLE__)->Instance->CR1, SPI_CR1_BIDIMODE);\
+ } while(0);
+
+
+uint32_t SpixTimeout = SPIx_TIMEOUT_MAX; /*<! Value of Timeout when SPI communication fails */
+static SPI_HandleTypeDef SpiHandle;
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+/**
+ * @}
+ */
+
+/** @defgroup STM32L476G_DISCOVERY_Private_FunctionPrototypes Private Functions
+ * @{
+ */
+/**************************** Bus functions ************************************/
+/* I2C2 bus function */
+#if defined(HAL_I2C_MODULE_ENABLED)
+static void I2C2_Init(void);
+static void I2C2_MspInit(I2C_HandleTypeDef *hi2c);
+static void I2C2_DeInit(void);
+static void I2C2_MspDeInit(I2C_HandleTypeDef *hi2c);
+static void I2C2_WriteData(uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t Value);
+static HAL_StatusTypeDef I2C2_WriteBuffer(uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length);
+static uint8_t I2C2_ReadData(uint16_t Addr, uint16_t Reg, uint16_t RegSize);
+static HAL_StatusTypeDef I2C2_ReadBuffer(uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length);
+static void I2C2_Error (void);
+
+static void I2C1_Init(void);
+static void I2C1_MspInit(I2C_HandleTypeDef *hi2c);
+static void I2C1_DeInit(void);
+static void I2C1_MspDeInit(I2C_HandleTypeDef *hi2c);
+static HAL_StatusTypeDef I2C1_WriteBuffer(uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length);
+static HAL_StatusTypeDef I2C1_ReadBuffer(uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length);
+static void I2C1_Error (void);
+#endif/* HAL_I2C_MODULE_ENABLED */
+
+/* SPIx bus function */
+#if defined(HAL_SPI_MODULE_ENABLED)
+static void SPIx_Init(void);
+static void SPIx_MspInit(SPI_HandleTypeDef *hspi);
+static void SPIx_DeInit(void);
+static void SPIx_MspDeInit(void);
+static uint8_t SPIx_WriteRead(uint8_t Byte);
+static void SPIx_Write(uint8_t byte);
+static uint8_t SPIx_Read(void);
+#endif
+
+/**************************** Link functions ***********************************/
+#if defined(HAL_I2C_MODULE_ENABLED)
+/* Link functions for EEPROM peripheral over I2C */
+void EEPROM_I2C_IO_Init(void);
+HAL_StatusTypeDef EEPROM_I2C_IO_WriteData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize);
+HAL_StatusTypeDef EEPROM_I2C_IO_ReadData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize);
+HAL_StatusTypeDef EEPROM_I2C_IO_IsDeviceReady(uint16_t DevAddress, uint32_t Trials);
+
+/* Link functions for Audio Codec peripheral */
+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);
+void AUDIO_IO_Delay(uint32_t delay);
+#endif/* HAL_I2C_MODULE_ENABLED */
+
+#if defined(HAL_SPI_MODULE_ENABLED)
+/* Link function for COMPASS / ACCELERO peripheral */
+void ACCELERO_IO_Init(void);
+void ACCELERO_IO_DeInit(void);
+void ACCELERO_IO_ITConfig(void);
+void ACCELERO_IO_Write(uint8_t RegisterAddr, uint8_t Value);
+uint8_t ACCELERO_IO_Read(uint8_t RegisterAddr);
+
+void MAGNETO_IO_Init(void);
+void MAGNETO_IO_DeInit(void);
+void MAGNETO_IO_ITConfig(void);
+void MAGNETO_IO_Write(uint8_t RegisterAddr, uint8_t Value);
+uint8_t MAGNETO_IO_Read(uint8_t RegisterAddr);
+
+
+/* Link functions for GYRO peripheral */
+void GYRO_IO_Init(void);
+void GYRO_IO_DeInit(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);
+
+#endif
+
+#if defined(HAL_I2C_MODULE_ENABLED)
+/* Link functions IOExpander */
+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 *Buffer, uint16_t Length);
+
+/* Link functions for IDD measurment */
+void MFX_IO_Init(void);
+void MFX_IO_DeInit(void);
+void MFX_IO_ITConfig (void);
+void MFX_IO_EnableWakeupPin(void);
+void MFX_IO_Wakeup(void);
+void MFX_IO_Delay(uint32_t delay);
+void MFX_IO_Write(uint16_t addr, uint8_t reg, uint8_t value);
+uint8_t MFX_IO_Read(uint16_t addr, uint8_t reg);
+void MFX_IO_WriteMultiple(uint16_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length);
+uint16_t MFX_IO_ReadMultiple(uint16_t addr, uint8_t reg, uint8_t *buffer, uint16_t length);
+#endif/* HAL_I2C_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/** @defgroup STM32L476G_DISCOVERY_Exported_Functions Exported Functions
+ * @{
+ */
+
+/**
+ * @brief This method returns the STM32L476 DISCOVERY BSP Driver revision
+ * @retval version : 0xXYZR (8bits for each decimal, R for RC)
+ */
+uint32_t BSP_GetVersion(void)
+{
+ return __STM32L476G_DISCOVERY_BSP_VERSION;
+}
+
+/**
+ * @brief This method returns the STM32L476 DISCOVERY supply mode
+ * @retval Code of current supply mode
+ * This code can be one of following:
+ * @arg SUPPLY_MODE_EXTERNAL
+ * @arg SUPPLY_MODE_BATTERY
+ */
+SupplyMode_TypeDef BSP_SupplyModeDetection(void)
+{
+ SupplyMode_TypeDef supplymode = SUPPLY_MODE_ERROR;
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ BATTERY_DETECTION_GPIO_CLK_ENABLE();
+
+ /* COMP GPIO pin configuration */
+ GPIO_InitStruct.Pin = BATTERY_DETECTION_PIN;
+ GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ HAL_GPIO_Init(BATTERY_DETECTION_GPIO_PORT, &GPIO_InitStruct);
+
+ HAL_Delay(400);
+ if(HAL_GPIO_ReadPin(BATTERY_DETECTION_GPIO_PORT, GPIO_InitStruct.Pin) != GPIO_PIN_RESET)
+ {
+ supplymode = SUPPLY_MODE_EXTERNAL;
+ }
+ else
+ {
+ supplymode = SUPPLY_MODE_BATTERY;
+ }
+
+ HAL_GPIO_DeInit(BATTERY_DETECTION_GPIO_PORT, GPIO_InitStruct.Pin);
+
+ return supplymode;
+}
+
+#if defined (USE_STM32L476G_DISCO_REVC) || defined (USE_STM32L476G_DISCO_REVB)
+/**
+ * @brief Configures LED GPIOs.
+ * @param Led: Specifies the Led to be configured.
+ * This parameter can be one of following parameters:
+ * @arg LED4
+ * @arg LED5
+ * @retval None
+ */
+#elif defined (USE_STM32L476G_DISCO_REVA)
+/**
+ * @brief Configures LED GPIOs.
+ * @param Led: Specifies the Led to be configured.
+ * This parameter can be one of following parameters:
+ * @arg LED3
+ * @arg LED4
+ * @retval None
+ */
+#endif
+void BSP_LED_Init(Led_TypeDef Led)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Enable the GPIO_LED clock */
+ LEDx_GPIO_CLK_ENABLE(Led);
+
+ /* Configure the GPIO_LED pin */
+ GPIO_InitStructure.Pin = LED_PIN[Led];
+ GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStructure.Pull = GPIO_NOPULL;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+
+ HAL_GPIO_Init(LED_PORT[Led], &GPIO_InitStructure);
+
+ HAL_GPIO_WritePin(LED_PORT[Led], GPIO_InitStructure.Pin, GPIO_PIN_RESET);
+}
+
+#if defined (USE_STM32L476G_DISCO_REVC) || defined (USE_STM32L476G_DISCO_REVB)
+/**
+ * @brief Unconfigures LED GPIOs.
+ * @param Led: Specifies the Led to be unconfigured.
+ * This parameter can be one of following parameters:
+ * @arg LED4
+ * @arg LED5
+ * @retval None
+ */
+#elif defined (USE_STM32L476G_DISCO_REVA)
+/**
+ * @brief Unconfigures LED GPIOs.
+ * @param Led: Specifies the Led to be unconfigured.
+ * This parameter can be one of following parameters:
+ * @arg LED3
+ * @arg LED4
+ * @retval None
+ */
+#endif
+void BSP_LED_DeInit(Led_TypeDef Led)
+{
+ /* Enable the GPIO_LED clock */
+ LEDx_GPIO_CLK_ENABLE(Led);
+
+ HAL_GPIO_DeInit(LED_PORT[Led], LED_PIN[Led]);
+}
+
+#if defined (USE_STM32L476G_DISCO_REVC) || defined (USE_STM32L476G_DISCO_REVB)
+/**
+ * @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 LED5
+ * @retval None
+ */
+#elif defined (USE_STM32L476G_DISCO_REVA)
+/**
+ * @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
+ * @retval None
+ */
+#endif
+void BSP_LED_On(Led_TypeDef Led)
+{
+ HAL_GPIO_WritePin(LED_PORT[Led], LED_PIN[Led], GPIO_PIN_SET);
+}
+
+#if defined (USE_STM32L476G_DISCO_REVC) || defined (USE_STM32L476G_DISCO_REVB)
+/**
+ * @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 LED5
+ * @retval None
+ */
+#elif defined (USE_STM32L476G_DISCO_REVA)
+/**
+ * @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
+ * @retval None
+ */
+#endif
+void BSP_LED_Off(Led_TypeDef Led)
+{
+ HAL_GPIO_WritePin(LED_PORT[Led], LED_PIN[Led], GPIO_PIN_RESET);
+}
+
+#if defined (USE_STM32L476G_DISCO_REVC) || defined (USE_STM32L476G_DISCO_REVB)
+/**
+ * @brief Toggles the selected LED.
+ * @param Led: Specifies the Led to be toggled.
+ * This parameter can be one of following parameters:
+ * @arg LED4
+ * @arg LED5
+ * @retval None
+ */
+#elif defined (USE_STM32L476G_DISCO_REVA)
+/**
+ * @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
+ * @retval None
+ */
+#endif
+void BSP_LED_Toggle(Led_TypeDef Led)
+{
+ HAL_GPIO_TogglePin(LED_PORT[Led], LED_PIN[Led]);
+}
+
+/**
+ * @brief Configures all buttons of the joystick in GPIO or EXTI modes.
+ * @param Joy_Mode: Joystick mode.
+ * This parameter can be one of the following values:
+ * @arg JOY_MODE_GPIO: Joystick pins will be used as simple IOs
+ * @arg JOY_MODE_EXTI: Joystick pins will be connected to EXTI line
+ * with interrupt generation capability
+ * @retval HAL_OK: if all initializations are OK. Other value if error.
+ */
+uint8_t BSP_JOY_Init(JOYMode_TypeDef Joy_Mode)
+{
+ JOYState_TypeDef joykey;
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ /* Initialized the Joystick. */
+ for(joykey = JOY_SEL; joykey < (JOY_SEL + JOYn) ; joykey++)
+ {
+ /* Enable the JOY clock */
+ JOYx_GPIO_CLK_ENABLE(joykey);
+
+ GPIO_InitStruct.Pin = JOY_PIN[joykey];
+ GPIO_InitStruct.Pull = GPIO_PULLDOWN;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+
+ if (Joy_Mode == JOY_MODE_GPIO)
+ {
+ /* Configure Joy pin as input */
+ GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+ HAL_GPIO_Init(JOY_PORT[joykey], &GPIO_InitStruct);
+ }
+ else if (Joy_Mode == JOY_MODE_EXTI)
+ {
+ /* Configure Joy pin as input with External interrupt */
+ GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
+ HAL_GPIO_Init(JOY_PORT[joykey], &GPIO_InitStruct);
+
+ /* Enable and set Joy EXTI Interrupt to the lowest priority */
+ HAL_NVIC_SetPriority((IRQn_Type)(JOY_IRQn[joykey]), 0x0F, 0x00);
+ HAL_NVIC_EnableIRQ((IRQn_Type)(JOY_IRQn[joykey]));
+ }
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Unonfigures all GPIOs used as buttons of the joystick.
+ * @retval None.
+ */
+void BSP_JOY_DeInit(void)
+{
+ JOYState_TypeDef joykey;
+
+ /* Initialized the Joystick. */
+ for(joykey = JOY_SEL; joykey < (JOY_SEL + JOYn) ; joykey++)
+ {
+ /* Enable the JOY clock */
+ JOYx_GPIO_CLK_ENABLE(joykey);
+
+ HAL_GPIO_DeInit(JOY_PORT[joykey], JOY_PIN[joykey]);
+ }
+}
+
+/**
+* @brief Returns the current joystick status.
+* @retval Code of the joystick key pressed
+* This code can be one of the following values:
+* @arg JOY_NONE
+* @arg JOY_SEL
+* @arg JOY_DOWN
+* @arg JOY_LEFT
+* @arg JOY_RIGHT
+* @arg JOY_UP
+*/
+JOYState_TypeDef BSP_JOY_GetState(void)
+{
+ JOYState_TypeDef joykey;
+
+ for (joykey = JOY_SEL; joykey < (JOY_SEL + JOYn) ; joykey++)
+ {
+ if (HAL_GPIO_ReadPin(JOY_PORT[joykey], JOY_PIN[joykey]) == GPIO_PIN_SET)
+ {
+ /* Return Code Joystick key pressed */
+ return joykey;
+ }
+ }
+
+ /* No Joystick key pressed */
+ return JOY_NONE;
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup STM32L476G_DISCOVERY_BusOperations_Functions Bus Operations Functions
+ * @{
+ */
+
+/*******************************************************************************
+ BUS OPERATIONS
+*******************************************************************************/
+#if defined(HAL_SPI_MODULE_ENABLED)
+/******************************* SPI Routines**********************************/
+/**
+ * @brief SPIx Bus initialization
+ * @retval None
+ */
+static void SPIx_Init(void)
+{
+ if(HAL_SPI_GetState(&SpiHandle) == HAL_SPI_STATE_RESET)
+ {
+ /* SPI Config */
+ SpiHandle.Instance = DISCOVERY_SPIx;
+ /* SPI baudrate is set to 10 MHz (PCLK1/SPI_BaudRatePrescaler = 80/8 = 10 MHz)
+ to verify these constraints:
+ lsm303c SPI interface max baudrate is 10MHz for write/read
+ PCLK1 max frequency is set to 80 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_DISABLE;
+ 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_DISABLE;
+ SpiHandle.Init.Mode = SPI_MODE_MASTER;
+
+ SPIx_MspInit(&SpiHandle);
+ HAL_SPI_Init(&SpiHandle);
+ }
+}
+
+/**
+ * @brief SPI MSP Init
+ * @param hspi: SPI handle
+ * @retval None
+ */
+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_NOPULL; // GPIO_PULLDOWN;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
+ GPIO_InitStructure.Alternate = DISCOVERY_SPIx_AF;
+ HAL_GPIO_Init(DISCOVERY_SPIx_GPIO_PORT, &GPIO_InitStructure);
+}
+
+/**
+ * @brief SPIx Bus Deinitialization
+ * @retval None
+ */
+void SPIx_DeInit(void)
+{
+ if(HAL_SPI_GetState(&SpiHandle) != HAL_SPI_STATE_RESET)
+ {
+ /* SPI Deinit */
+ HAL_SPI_DeInit(&SpiHandle);
+ SPIx_MspDeInit();
+ }
+}
+
+/**
+ * @brief SPI MSP DeInit
+ * @retval None
+ */
+static void SPIx_MspDeInit(void)
+{
+ /* enable SPIx gpio clock */
+ DISCOVERY_SPIx_GPIO_CLK_ENABLE();
+
+ /* Unconfigure SPIx SCK, MOSI and MISO */
+ HAL_GPIO_DeInit(DISCOVERY_SPIx_GPIO_PORT, (DISCOVERY_SPIx_SCK_PIN | DISCOVERY_SPIx_MOSI_PIN | DISCOVERY_SPIx_MISO_PIN));
+
+ DISCOVERY_SPIx_GPIO_FORCE_RESET();
+ DISCOVERY_SPIx_GPIO_RELEASE_RESET();
+
+ /* Disable SPIx clock */
+ DISCOVERY_SPIx_CLOCK_DISABLE();
+}
+
+/**
+ * @brief Sends a Byte through the SPI interface and return the Byte received
+ * from the SPI bus.
+ * @param Byte : Byte send.
+ * @retval none.
+ */
+static uint8_t SPIx_WriteRead(uint8_t Byte)
+{
+ uint8_t receivedbyte;
+
+ /* Enable the SPI */
+ __HAL_SPI_ENABLE(&SpiHandle);
+ /* check TXE flag */
+ while((SpiHandle.Instance->SR & SPI_FLAG_TXE) != SPI_FLAG_TXE);
+
+ /* Write the data */
+ *((__IO uint8_t*)&SpiHandle.Instance->DR) = Byte;
+
+ while((SpiHandle.Instance->SR & SPI_FLAG_RXNE) != SPI_FLAG_RXNE);
+ receivedbyte = *((__IO uint8_t*)&SpiHandle.Instance->DR);
+
+ /* Wait BSY flag */
+ while((SpiHandle.Instance->SR & SPI_FLAG_FTLVL) != SPI_FTLVL_EMPTY);
+ while((SpiHandle.Instance->SR & SPI_FLAG_BSY) == SPI_FLAG_BSY);
+
+ /* disable the SPI */
+ __HAL_SPI_DISABLE(&SpiHandle);
+
+ return receivedbyte;
+}
+
+/**
+ * @brief Sends a Byte through the SPI interface.
+ * @param Byte : Byte to send.
+ * @retval none.
+ */
+static void SPIx_Write(uint8_t Byte)
+{
+ /* Enable the SPI */
+ __HAL_SPI_ENABLE(&SpiHandle);
+ /* check TXE flag */
+ while((SpiHandle.Instance->SR & SPI_FLAG_TXE) != SPI_FLAG_TXE);
+
+ /* Write the data */
+ *((__IO uint8_t*)&SpiHandle.Instance->DR) = Byte;
+
+ /* Wait BSY flag */
+ while((SpiHandle.Instance->SR & SPI_FLAG_BSY) == SPI_FLAG_BSY);
+
+ /* disable the SPI */
+ __HAL_SPI_DISABLE(&SpiHandle);
+}
+
+#if defined(__ICCARM__)
+#pragma optimize=none
+#endif
+/**
+ * @brief Receives a Byte from the SPI bus.
+ * @retval The received byte value
+ */
+static uint8_t SPIx_Read(void)
+{
+ uint8_t receivedbyte;
+
+ __HAL_SPI_ENABLE(&SpiHandle);
+ __DSB();
+ __DSB();
+ __DSB();
+ __DSB();
+ __DSB();
+ __DSB();
+ __DSB();
+ __DSB();
+ __HAL_SPI_DISABLE(&SpiHandle);
+
+ while((SpiHandle.Instance->SR & SPI_FLAG_RXNE) != SPI_FLAG_RXNE);
+ /* read the received data */
+ receivedbyte = *(__IO uint8_t *)&SpiHandle.Instance->DR;
+
+ /* Wait for the BSY flag reset */
+ while((SpiHandle.Instance->SR & SPI_FLAG_BSY) == SPI_FLAG_BSY);
+
+
+ return receivedbyte;
+}
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+
+#if defined(HAL_I2C_MODULE_ENABLED)
+/******************************* I2C Routines**********************************/
+/**
+ * @brief Discovery I2C1 Bus initialization
+ * @retval None
+ */
+static void I2C1_Init(void)
+{
+ if(HAL_I2C_GetState(&I2c1Handle) == HAL_I2C_STATE_RESET)
+ {
+ I2c1Handle.Instance = DISCOVERY_I2C1;
+ I2c1Handle.Init.Timing = DISCOVERY_I2C1_TIMING;
+ I2c1Handle.Init.OwnAddress1 = 0;
+ I2c1Handle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
+ I2c1Handle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
+ I2c1Handle.Init.OwnAddress2 = 0;
+ I2c1Handle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
+ I2c1Handle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
+
+ /* Init the I2C */
+ I2C1_MspInit(&I2c1Handle);
+ HAL_I2C_Init(&I2c1Handle);
+ }
+}
+
+/**
+ * @brief Discovery I2C1 MSP Initialization
+ * @param hi2c: I2C handle
+ * @retval None
+ */
+static void I2C1_MspInit(I2C_HandleTypeDef *hi2c)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+ RCC_PeriphCLKInitTypeDef RCC_PeriphCLKInitStruct;
+
+ /* IOSV bit MUST be set to access GPIO port G[2:15] */
+ __HAL_RCC_PWR_CLK_ENABLE();
+ HAL_PWREx_EnableVddIO2();
+
+ if (hi2c->Instance == DISCOVERY_I2C1)
+ {
+ /*##-1- Configure the Discovery I2C clock source. The clock is derived from the SYSCLK #*/
+ RCC_PeriphCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2C1;
+ RCC_PeriphCLKInitStruct.I2c1ClockSelection = RCC_I2C1CLKSOURCE_SYSCLK;
+ HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphCLKInitStruct);
+
+ /*##-2- Configure the GPIOs ################################################*/
+ /* Enable GPIO clock */
+ DISCOVERY_I2C1_SDA_GPIO_CLK_ENABLE();
+ DISCOVERY_I2C1_SCL_GPIO_CLK_ENABLE();
+
+ /* Configure I2C Rx/Tx as alternate function */
+ GPIO_InitStructure.Pin = DISCOVERY_I2C1_SCL_PIN | DISCOVERY_I2C1_SDA_PIN;
+ GPIO_InitStructure.Mode = GPIO_MODE_AF_OD;
+ GPIO_InitStructure.Pull = GPIO_PULLUP;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ GPIO_InitStructure.Alternate = DISCOVERY_I2C1_SCL_SDA_AF;
+ HAL_GPIO_Init(DISCOVERY_I2C1_SCL_GPIO_PORT, &GPIO_InitStructure);
+
+ /*##-3- Configure the Discovery I2C1 peripheral #######################################*/
+ /* Enable Discovery I2C1 clock */
+ DISCOVERY_I2C1_CLK_ENABLE();
+
+ /* Force and release the I2C Peripheral Clock Reset */
+ DISCOVERY_I2C1_FORCE_RESET();
+ DISCOVERY_I2C1_RELEASE_RESET();
+
+ /* Enable and set Discovery I2C1 Interrupt to the highest priority */
+ HAL_NVIC_SetPriority(DISCOVERY_I2C1_EV_IRQn, 0x00, 0);
+ HAL_NVIC_EnableIRQ(DISCOVERY_I2C1_EV_IRQn);
+
+ /* Enable and set Discovery I2C1 Interrupt to the highest priority */
+ HAL_NVIC_SetPriority(DISCOVERY_I2C1_ER_IRQn, 0x00, 0);
+ HAL_NVIC_EnableIRQ(DISCOVERY_I2C1_ER_IRQn);
+ }
+}
+
+/**
+ * @brief Discovery I2C1 Bus Deitialization
+ * @retval None
+ */
+static void I2C1_DeInit(void)
+{
+ if(HAL_I2C_GetState(&I2c1Handle) != HAL_I2C_STATE_RESET)
+ {
+ /* Deinit the I2C */
+ HAL_I2C_DeInit(&I2c1Handle);
+ I2C1_MspDeInit(&I2c1Handle);
+ }
+}
+
+/**
+ * @brief Discovery I2C1 MSP Deinitialization
+ * @param hi2c: I2C handle
+ * @retval None
+ */
+static void I2C1_MspDeInit(I2C_HandleTypeDef *hi2c)
+{
+ if(hi2c->Instance == DISCOVERY_I2C1)
+ {
+ /*##-1- Unconfigure the GPIOs ################################################*/
+ /* Enable GPIO clock */
+ DISCOVERY_I2C1_SDA_GPIO_CLK_ENABLE();
+ DISCOVERY_I2C1_SCL_GPIO_CLK_ENABLE();
+
+ /* Deinit Rx/Tx pins */
+ HAL_GPIO_DeInit(DISCOVERY_I2C1_SCL_GPIO_PORT, (DISCOVERY_I2C1_SCL_PIN | DISCOVERY_I2C1_SDA_PIN));
+
+ /*##-2- Unconfigure the Discovery I2C1 peripheral ############################*/
+ /* Force & Release the I2C Peripheral Clock Reset */
+ DISCOVERY_I2C1_FORCE_RESET();
+ DISCOVERY_I2C1_RELEASE_RESET();
+
+ /* Disable Discovery I2C1 clock */
+ DISCOVERY_I2C1_CLK_DISABLE();
+
+ /* Disable Discovery I2C1 interrupts */
+ HAL_NVIC_DisableIRQ(DISCOVERY_I2C1_EV_IRQn);
+ HAL_NVIC_DisableIRQ(DISCOVERY_I2C1_ER_IRQn);
+
+ __HAL_RCC_PWR_CLK_ENABLE();
+ HAL_PWREx_DisableVddIO2();
+ }
+}
+
+/**
+ * @brief Write 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 RegSize: The target register size (can be 8BIT or 16BIT)
+ * @param pBuffer: The target register value to be written
+ * @param Length: buffer size to be written
+ * @retval None
+ */
+static HAL_StatusTypeDef I2C1_WriteBuffer(uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ status = HAL_I2C_Mem_Write(&I2c1Handle, Addr, (uint16_t)Reg, RegSize, pBuffer, Length, I2c1Timeout);
+
+/* Check the communication status */
+ if(status != HAL_OK)
+ {
+ /* Re-Initiaize the BUS */
+ I2C1_Error();
+ }
+ return status;
+}
+
+/**
+ * @brief Reads multiple data on the BUS.
+ * @param Addr: I2C Address
+ * @param Reg: Reg Address
+ * @param RegSize : The target register size (can be 8BIT or 16BIT)
+ * @param pBuffer: pointer to read data buffer
+ * @param Length: length of the data
+ * @retval 0 if no problems to read multiple data
+ */
+static HAL_StatusTypeDef I2C1_ReadBuffer(uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ status = HAL_I2C_Mem_Read(&I2c1Handle, Addr, (uint16_t)Reg, RegSize, pBuffer, Length, I2c1Timeout);
+
+/* Check the communication status */
+ if(status != HAL_OK)
+ {
+ /* Re-Initiaize the BUS */
+ I2C1_Error();
+ }
+ return status;
+}
+
+/**
+ * @brief Discovery I2C1 error treatment function
+ * @retval None
+ */
+static void I2C1_Error (void)
+{
+ /* De-initialize the I2C communication BUS */
+ HAL_I2C_DeInit(&I2c1Handle);
+
+ /* Re- Initiaize the I2C communication BUS */
+ I2C1_Init();
+}
+
+/**
+ * @brief Discovery I2C2 Bus initialization
+ * @retval None
+ */
+static void I2C2_Init(void)
+{
+ if(HAL_I2C_GetState(&I2c2Handle) == HAL_I2C_STATE_RESET)
+ {
+ I2c2Handle.Instance = DISCOVERY_I2C2;
+ I2c2Handle.Init.Timing = DISCOVERY_I2C2_TIMING;
+ I2c2Handle.Init.OwnAddress1 = 0;
+ I2c2Handle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
+ I2c2Handle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
+ I2c2Handle.Init.OwnAddress2 = 0;
+ I2c2Handle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
+ I2c2Handle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
+
+ /* Init the I2C */
+ I2C2_MspInit(&I2c2Handle);
+ HAL_I2C_Init(&I2c2Handle);
+ }
+}
+
+/**
+ * @brief Discovery I2C2 MSP Initialization
+ * @param hi2c: I2C2 handle
+ * @retval None
+ */
+static void I2C2_MspInit(I2C_HandleTypeDef *hi2c)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+ RCC_PeriphCLKInitTypeDef RCC_PeriphCLKInitStruct;
+
+ if (hi2c->Instance == DISCOVERY_I2C2)
+ {
+ /*##-1- Configure the Discovery I2C2 clock source. The clock is derived from the SYSCLK #*/
+ RCC_PeriphCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2C2;
+ RCC_PeriphCLKInitStruct.I2c2ClockSelection = RCC_I2C2CLKSOURCE_SYSCLK;
+ HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphCLKInitStruct);
+
+ /*##-2- Configure the GPIOs ################################################*/
+ /* Enable GPIO clock */
+ DISCOVERY_I2C2_SDA_GPIO_CLK_ENABLE();
+ DISCOVERY_I2C2_SCL_GPIO_CLK_ENABLE();
+
+ /* Configure I2C Rx/Tx as alternate function */
+ GPIO_InitStructure.Pin = DISCOVERY_I2C2_SCL_PIN | DISCOVERY_I2C2_SDA_PIN;
+ GPIO_InitStructure.Mode = GPIO_MODE_AF_OD;
+ GPIO_InitStructure.Pull = GPIO_PULLUP;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ GPIO_InitStructure.Alternate = DISCOVERY_I2C2_SCL_SDA_AF;
+ HAL_GPIO_Init(DISCOVERY_I2C2_SCL_GPIO_PORT, &GPIO_InitStructure);
+
+ /*##-3- Configure the Discovery I2C2 peripheral #############################*/
+ /* Enable Discovery_I2C2 clock */
+ DISCOVERY_I2C2_CLK_ENABLE();
+
+ /* Force and release the I2C Peripheral Clock Reset */
+ DISCOVERY_I2C2_FORCE_RESET();
+ DISCOVERY_I2C2_RELEASE_RESET();
+
+ /* Enable and set Discovery I2C2 Interrupt to the highest priority */
+ HAL_NVIC_SetPriority(DISCOVERY_I2C2_EV_IRQn, 0x00, 0);
+ HAL_NVIC_EnableIRQ(DISCOVERY_I2C2_EV_IRQn);
+
+ /* Enable and set Discovery I2C2 Interrupt to the highest priority */
+ HAL_NVIC_SetPriority(DISCOVERY_I2C2_ER_IRQn, 0x00, 0);
+ HAL_NVIC_EnableIRQ(DISCOVERY_I2C2_ER_IRQn);
+ }
+}
+
+/**
+ * @brief Discovery I2C2 Bus Deinitialization
+ * @retval None
+ */
+static void I2C2_DeInit(void)
+{
+ if(HAL_I2C_GetState(&I2c2Handle) != HAL_I2C_STATE_RESET)
+ {
+ /* DeInit the I2C */
+ HAL_I2C_DeInit(&I2c2Handle);
+ I2C2_MspDeInit(&I2c2Handle);
+ }
+}
+
+/**
+ * @brief Discovery I2C2 MSP DeInitialization
+ * @param hi2c: I2C2 handle
+ * @retval None
+ */
+static void I2C2_MspDeInit(I2C_HandleTypeDef *hi2c)
+{
+ if (hi2c->Instance == DISCOVERY_I2C2)
+ {
+ /*##-1- Unconfigure the GPIOs ################################################*/
+ /* Enable GPIO clock */
+ DISCOVERY_I2C2_SDA_GPIO_CLK_ENABLE();
+ DISCOVERY_I2C2_SCL_GPIO_CLK_ENABLE();
+
+ /* Configure I2C Rx/Tx as alternate function */
+ HAL_GPIO_DeInit(DISCOVERY_I2C2_SCL_GPIO_PORT, (DISCOVERY_I2C2_SCL_PIN | DISCOVERY_I2C2_SDA_PIN));
+
+ /*##-2- Unconfigure the Discovery I2C2 peripheral ############################*/
+ /* Force and release I2C Peripheral */
+ DISCOVERY_I2C2_FORCE_RESET();
+ DISCOVERY_I2C2_RELEASE_RESET();
+
+ /* Disable Discovery I2C2 clock */
+ DISCOVERY_I2C2_CLK_DISABLE();
+
+ /* Disable Discovery I2C2 interrupts */
+ HAL_NVIC_DisableIRQ(DISCOVERY_I2C2_EV_IRQn);
+ HAL_NVIC_DisableIRQ(DISCOVERY_I2C2_ER_IRQn);
+ }
+}
+
+/**
+ * @brief Write 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 RegSize: The target register size (can be 8BIT or 16BIT)
+ * @param Value: The target register value to be written
+ * @retval None
+ */
+static void I2C2_WriteData(uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t Value)
+ {
+ HAL_StatusTypeDef status = HAL_OK;
+
+ status = HAL_I2C_Mem_Write(&I2c2Handle, Addr, (uint16_t)Reg, RegSize, &Value, 1, I2c2Timeout);
+
+ /* Check the communication status */
+ if(status != HAL_OK)
+ {
+ /* Re-Initiaize the BUS */
+ I2C2_Error();
+ }
+}
+
+/**
+ * @brief Write 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 RegSize: The target register size (can be 8BIT or 16BIT)
+ * @param pBuffer: The target register value to be written
+ * @param Length: buffer size to be written
+ * @retval None
+ */
+static HAL_StatusTypeDef I2C2_WriteBuffer(uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ status = HAL_I2C_Mem_Write(&I2c2Handle, Addr, (uint16_t)Reg, RegSize, pBuffer, Length, I2c2Timeout);
+
+ /* Check the communication status */
+ if(status != HAL_OK)
+ {
+ /* Re-Initiaize the BUS */
+ I2C2_Error();
+ }
+
+ return status;
+}
+
+/**
+ * @brief Read a register of the device through BUS
+ * @param Addr: Device address on BUS
+ * @param Reg: The target register address to read
+ * @param RegSize: The target register size (can be 8BIT or 16BIT)
+ * @retval read register value
+ */
+static uint8_t I2C2_ReadData(uint16_t Addr, uint16_t Reg, uint16_t RegSize)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+ uint8_t value = 0x0;
+
+ status = HAL_I2C_Mem_Read(&I2c2Handle, Addr, Reg, RegSize, &value, 1, I2c2Timeout);
+
+ /* Check the communication status */
+ if(status != HAL_OK)
+ {
+ /* Re-Initiaize the BUS */
+ I2C2_Error();
+ }
+
+ return value;
+}
+
+/**
+ * @brief Reads multiple data on the BUS.
+ * @param Addr: I2C Address
+ * @param Reg: Reg Address
+ * @param RegSize : The target register size (can be 8BIT or 16BIT)
+ * @param pBuffer: pointer to read data buffer
+ * @param Length: length of the data
+ * @retval 0 if no problems to read multiple data
+ */
+static HAL_StatusTypeDef I2C2_ReadBuffer(uint16_t Addr, uint16_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ status = HAL_I2C_Mem_Read(&I2c2Handle, Addr, (uint16_t)Reg, RegSize, pBuffer, Length, I2c2Timeout);
+
+ /* Check the communication status */
+ if(status != HAL_OK)
+ {
+ /* Re-Initiaize the BUS */
+ I2C2_Error();
+ }
+
+ return status;
+}
+
+/**
+ * @brief Discovery I2C2 error treatment function
+ * @retval None
+ */
+static void I2C2_Error (void)
+{
+ /* De-initialize the I2C communication BUS */
+ HAL_I2C_DeInit(&I2c2Handle);
+
+ /* Re- Initiaize the I2C communication BUS */
+ I2C2_Init();
+}
+#endif /*HAL_I2C_MODULE_ENABLED*/
+
+
+/*******************************************************************************
+ LINK OPERATIONS
+*******************************************************************************/
+#if defined(HAL_SPI_MODULE_ENABLED)
+/*********************** LINK ACCELEROMETER ***********************************/
+/**
+ * @brief Configures COMPASS/ACCELEROMETER io interface.
+ * @retval None
+ */
+void ACCELERO_IO_Init(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Enable CS GPIO clock and Configure GPIO PIN for Gyroscope Chip select */
+ ACCELERO_CS_GPIO_CLK_ENABLE();
+ GPIO_InitStructure.Pin = ACCELERO_CS_PIN;
+ GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStructure.Pull = GPIO_NOPULL;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ HAL_GPIO_Init(ACCELERO_CS_GPIO_PORT, &GPIO_InitStructure);
+
+ /* Deselect : Chip Select high */
+ ACCELERO_CS_HIGH();
+
+ SPIx_Init();
+}
+
+/**
+ * @brief De-Configures COMPASS/ACCELEROMETER io interface.
+ * @retval None
+ */
+void ACCELERO_IO_DeInit(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Enable CS GPIO clock and Configure GPIO PIN for Gyroscope Chip select */
+ ACCELERO_CS_GPIO_CLK_ENABLE();
+ GPIO_InitStructure.Pin = ACCELERO_CS_PIN;
+ GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStructure.Pull = GPIO_NOPULL;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ HAL_GPIO_Init(ACCELERO_CS_GPIO_PORT, &GPIO_InitStructure);
+
+ /* Deselect : Chip Select high */
+ ACCELERO_CS_HIGH();
+
+ /* Uninitialize SPI bus */
+ SPIx_DeInit();
+}
+
+/**
+ * @brief Configures COMPASS / ACCELERO click IT
+ * @retval None
+ */
+void ACCELERO_IO_ITConfig(void)
+{
+}
+
+/**
+ * @brief Writes one byte to the COMPASS / ACCELEROMETER.
+ * @param RegisterAddr specifies the COMPASS / ACCELEROMETER register to be written.
+ * @param Value : Data to be written
+ * @retval None
+ */
+void ACCELERO_IO_Write(uint8_t RegisterAddr, uint8_t Value)
+{
+ ACCELERO_CS_LOW();
+ __SPI_DIRECTION_1LINE_TX(&SpiHandle);
+ /* call SPI Read data bus function */
+ SPIx_Write(RegisterAddr);
+ SPIx_Write(Value);
+ ACCELERO_CS_HIGH();
+}
+
+/**
+ * @brief Reads a block of data from the COMPASS / ACCELEROMETER.
+ * @param RegisterAddr : specifies the COMPASS / ACCELEROMETER internal address register to read from
+ * @retval ACCELEROMETER register value
+ */
+uint8_t ACCELERO_IO_Read(uint8_t RegisterAddr)
+{
+ RegisterAddr = RegisterAddr | ((uint8_t)0x80);
+ ACCELERO_CS_LOW();
+ __SPI_DIRECTION_1LINE_TX(&SpiHandle);
+ SPIx_Write(RegisterAddr);
+ __SPI_DIRECTION_1LINE_RX(&SpiHandle);
+ uint8_t val = SPIx_Read();
+ ACCELERO_CS_HIGH();
+ return val;
+}
+
+/********************************* LINK MAGNETO *******************************/
+/**
+ * @brief Configures COMPASS/MAGNETO SPI interface.
+ * @retval None
+ */
+void MAGNETO_IO_Init(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Enable CS GPIO clock and Configure GPIO PIN for Gyroscope Chip select */
+ MAGNETO_CS_GPIO_CLK_ENABLE();
+ GPIO_InitStructure.Pin = MAGNETO_CS_PIN;
+ GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStructure.Pull = GPIO_NOPULL;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ HAL_GPIO_Init(MAGNETO_CS_GPIO_PORT, &GPIO_InitStructure);
+
+ /* Deselect : Chip Select high */
+ MAGNETO_CS_HIGH();
+
+ SPIx_Init();
+}
+
+/**
+ * @brief de-Configures COMPASS/MAGNETO SPI interface.
+ * @retval None
+ */
+void MAGNETO_IO_DeInit(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Enable CS GPIO clock and Configure GPIO PIN for Gyroscope Chip select */
+ MAGNETO_CS_GPIO_CLK_ENABLE();
+ GPIO_InitStructure.Pin = MAGNETO_CS_PIN;
+ GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStructure.Pull = GPIO_NOPULL;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ HAL_GPIO_Init(MAGNETO_CS_GPIO_PORT, &GPIO_InitStructure);
+
+ /* Deselect : Chip Select high */
+ MAGNETO_CS_HIGH();
+
+ HAL_GPIO_DeInit(MAGNETO_CS_GPIO_PORT, MAGNETO_INT1_PIN|MAGNETO_DRDY_PIN);
+
+
+ /* Uninitialize SPI bus */
+ SPIx_DeInit();
+}
+
+/**
+ * @brief Writes one byte to the COMPASS/MAGNETO.
+ * @param RegisterAddr specifies the COMPASS/MAGNETO register to be written.
+ * @param Value : Data to be written
+ * @retval None
+ */
+void MAGNETO_IO_Write(uint8_t RegisterAddr, uint8_t Value)
+{
+ MAGNETO_CS_LOW();
+ __SPI_DIRECTION_1LINE_TX(&SpiHandle);
+ /* call SPI Read data bus function */
+ SPIx_Write(RegisterAddr);
+ SPIx_Write(Value);
+ MAGNETO_CS_HIGH();
+}
+
+/**
+ * @brief Reads a block of data from the COMPASS/MAGNETO.
+ * @param RegisterAddr : specifies the COMPASS/MAGNETO internal address register to read from
+ * @retval ACCELEROMETER register value
+ */
+uint8_t MAGNETO_IO_Read(uint8_t RegisterAddr)
+{
+ MAGNETO_CS_LOW();
+ __SPI_DIRECTION_1LINE_TX(&SpiHandle);
+ SPIx_Write(RegisterAddr | 0x80);
+ __SPI_DIRECTION_1LINE_RX(&SpiHandle);
+ uint8_t val = SPIx_Read();
+ MAGNETO_CS_HIGH();
+ return val;
+}
+
+/********************************* LINK GYRO *****************************/
+/**
+ * @brief Configures the GYRO SPI interface.
+ * @retval None
+ */
+void GYRO_IO_Init(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+
+ /* Case GYRO not used in the demonstration software except being set in
+ low power mode.
+ To avoid access conflicts with accelerometer and magnetometer,
+ initialize XL_CS and MAG_CS pins then deselect these I/O */
+ ACCELERO_CS_GPIO_CLK_ENABLE();
+ GPIO_InitStructure.Pin = ACCELERO_CS_PIN;
+ GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStructure.Pull = GPIO_NOPULL;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ HAL_GPIO_Init(ACCELERO_CS_GPIO_PORT, &GPIO_InitStructure);
+
+ /* Deselect : Chip Select high */
+ ACCELERO_CS_HIGH();
+
+ /* Enable CS GPIO clock and Configure GPIO PIN for Gyroscope Chip select */
+ MAGNETO_CS_GPIO_CLK_ENABLE();
+ GPIO_InitStructure.Pin = MAGNETO_CS_PIN;
+ GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStructure.Pull = GPIO_NOPULL;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ HAL_GPIO_Init(MAGNETO_CS_GPIO_PORT, &GPIO_InitStructure);
+
+ /* Deselect : Chip Select high */
+ MAGNETO_CS_HIGH();
+
+
+ /* 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_FREQ_VERY_HIGH;
+ 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_INT1_GPIO_CLK_ENABLE();
+ GPIO_InitStructure.Pin = GYRO_INT1_PIN;
+ GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
+ GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ GPIO_InitStructure.Pull= GPIO_NOPULL;
+ HAL_GPIO_Init(GYRO_INT1_GPIO_PORT, &GPIO_InitStructure);
+
+ GYRO_INT2_GPIO_CLK_ENABLE();
+ GPIO_InitStructure.Pin = GYRO_INT2_PIN;
+ HAL_GPIO_Init(GYRO_INT2_GPIO_PORT, &GPIO_InitStructure);
+
+ SPIx_Init();
+
+}
+
+
+/**
+ * @brief de-Configures GYRO SPI interface.
+ * @retval None
+ */
+void GYRO_IO_DeInit(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+ /* Enable CS GPIO clock */
+ 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_FREQ_VERY_HIGH;
+ HAL_GPIO_Init(GYRO_CS_GPIO_PORT, &GPIO_InitStructure);
+
+ /* Deselect : Chip Select high */
+ GYRO_CS_HIGH();
+
+ GYRO_INT1_GPIO_CLK_ENABLE();
+ GYRO_INT2_GPIO_CLK_ENABLE();
+
+ /* Uninitialize the INT1/INT2 Pins */
+ HAL_GPIO_DeInit(GYRO_INT1_GPIO_PORT, GYRO_INT1_PIN);
+ HAL_GPIO_DeInit(GYRO_INT2_GPIO_PORT, GYRO_INT2_PIN);
+
+ /* Uninitialize SPI bus */
+ SPIx_DeInit();
+}
+
+/**
+ * @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.
+ * @retval None
+ */
+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;
+ }
+ /* Set chip select Low at the start of the transmission */
+ GYRO_CS_LOW();
+ __SPI_DIRECTION_2LINES(&SpiHandle);
+
+ /* 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++;
+ }
+
+ /* 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.
+ * @retval None
+ */
+void GYRO_IO_Read(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead)
+{
+ if(NumByteToRead > 0x01)
+ {
+ ReadAddr |= (uint8_t)(READWRITE_CMD | MULTIPLEBYTE_CMD);
+ }
+ else
+ {
+ ReadAddr |= (uint8_t)READWRITE_CMD;
+ }
+ /* Set chip select Low at the start of the transmission */
+ GYRO_CS_LOW();
+ __SPI_DIRECTION_2LINES(&SpiHandle);
+ /* 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(0x00);
+ NumByteToRead--;
+ pBuffer++;
+ }
+
+ /* Set chip select High at the end of the transmission */
+ GYRO_CS_HIGH();
+}
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+#if defined(HAL_I2C_MODULE_ENABLED)
+/********************************* LINK MFX ***********************************/
+/**
+ * @brief Initializes MFX low level.
+ * @retval None
+ */
+void MFX_IO_Init(void)
+{
+ /* I2C2 init */
+ I2C2_Init();
+}
+/**
+ * @brief Deinitializes MFX low level.
+ * @retval None
+ */
+void MFX_IO_DeInit(void)
+{
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ /* Enable wakeup gpio clock */
+ IDD_WAKEUP_GPIO_CLK_ENABLE();
+
+ /* MFX wakeup pin configuration */
+ GPIO_InitStruct.Pin = IDD_WAKEUP_PIN;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+ GPIO_InitStruct.Pull = GPIO_PULLDOWN;
+ HAL_GPIO_Init(IDD_WAKEUP_GPIO_PORT, &GPIO_InitStruct);
+
+ /* DeInit interrupt pin : disable IRQ before to avoid spurious interrupt */
+ HAL_NVIC_DisableIRQ((IRQn_Type)(IDD_INT_EXTI_IRQn));
+ IDD_INT_GPIO_CLK_ENABLE();
+ HAL_GPIO_DeInit(IDD_INT_GPIO_PORT, IDD_INT_PIN);
+
+ /* I2C2 Deinit */
+ I2C2_DeInit();
+}
+
+/**
+ * @brief Configures MFX low level interrupt.
+ * @retval None
+ */
+void MFX_IO_ITConfig(void)
+{
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ /* Enable the GPIO clock */
+ IDD_INT_GPIO_CLK_ENABLE();
+
+ /* MFX_OUT_IRQ (normally used for EXTI_WKUP) */
+ GPIO_InitStruct.Pin = IDD_INT_PIN;
+ GPIO_InitStruct.Pull = GPIO_PULLDOWN;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
+ HAL_GPIO_Init(IDD_INT_GPIO_PORT, &GPIO_InitStruct);
+
+ /* Enable and set GPIO EXTI Interrupt to the lowest priority */
+ HAL_NVIC_SetPriority((IRQn_Type)(IDD_INT_EXTI_IRQn), 0x0F, 0x0F);
+ HAL_NVIC_EnableIRQ((IRQn_Type)(IDD_INT_EXTI_IRQn));
+}
+
+/**
+ * @brief Configures MFX wke up pin.
+ * @retval None
+ */
+void MFX_IO_EnableWakeupPin(void)
+{
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ /* Enable wakeup gpio clock */
+ IDD_WAKEUP_GPIO_CLK_ENABLE();
+
+ /* MFX wakeup pin configuration */
+ GPIO_InitStruct.Pin = IDD_WAKEUP_PIN;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ HAL_GPIO_Init(IDD_WAKEUP_GPIO_PORT, &GPIO_InitStruct);
+}
+
+/**
+ * @brief Wakeup MFX.
+ * @retval None
+ */
+void MFX_IO_Wakeup(void)
+{
+ /* Set Wakeup pin to high to wakeup Idd measurement component from standby mode */
+ HAL_GPIO_WritePin(IDD_WAKEUP_GPIO_PORT, IDD_WAKEUP_PIN, GPIO_PIN_SET);
+
+ /* Wait */
+ HAL_Delay(1);
+
+ /* Set gpio pin basck to low */
+ HAL_GPIO_WritePin(IDD_WAKEUP_GPIO_PORT, IDD_WAKEUP_PIN, GPIO_PIN_RESET);
+}
+
+/**
+ * @brief MFX writes single data.
+ * @param Addr: I2C address
+ * @param Reg: Register address
+ * @param Value: Data to be written
+ * @retval None
+ */
+void MFX_IO_Write(uint16_t Addr, uint8_t Reg, uint8_t Value)
+{
+ I2C2_WriteData(Addr, Reg, I2C_MEMADD_SIZE_8BIT, Value);
+}
+
+/**
+ * @brief MFX reads single data.
+ * @param Addr: I2C address
+ * @param Reg: Register address
+ * @retval Read data
+ */
+uint8_t MFX_IO_Read(uint16_t Addr, uint8_t Reg)
+{
+ return I2C2_ReadData(Addr, Reg, I2C_MEMADD_SIZE_8BIT);
+}
+
+/**
+ * @brief MFX reads multiple data.
+ * @param Addr: I2C address
+ * @param Reg: Register address
+ * @param Buffer: Pointer to data buffer
+ * @param Length: Length of the data
+ * @retval Number of read data
+ */
+uint16_t MFX_IO_ReadMultiple(uint16_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length)
+{
+ return I2C2_ReadBuffer(Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, Buffer, Length);
+}
+
+/**
+ * @brief MFX writes multiple data.
+ * @param Addr: I2C address
+ * @param Reg: Register address
+ * @param Buffer: Pointer to data buffer
+ * @param Length: Length of the data
+ * @retval None
+ */
+void MFX_IO_WriteMultiple(uint16_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length)
+{
+ I2C2_WriteBuffer(Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, Buffer, Length);
+}
+
+/**
+ * @brief MFX delay
+ * @param Delay: Delay in ms
+ * @retval None
+ */
+void MFX_IO_Delay(uint32_t Delay)
+{
+ HAL_Delay(Delay);
+}
+
+
+/********************************* LINK AUDIO *********************************/
+/**
+ * @brief Initializes Audio low level.
+ * @retval None
+ */
+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_FREQ_HIGH;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ HAL_GPIO_Init(AUDIO_RESET_GPIO, &GPIO_InitStruct);
+
+ /* I2C bus init */
+ I2C1_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.
+ * @retval None
+ */
+void AUDIO_IO_DeInit(void) /* TO DO */
+{
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ /***********************************************************************/
+ /* In case of battery-supplied powered, there is no audio codec-based
+ features available. Set audio codec I/O default setting */
+ /***********************************************************************/
+ __HAL_RCC_GPIOE_CLK_ENABLE();
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP ;
+ GPIO_InitStruct.Pin = (GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6);
+ GPIO_InitStruct.Pull = GPIO_PULLDOWN;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+ HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
+ HAL_GPIO_WritePin(GPIOE, GPIO_PIN_2, GPIO_PIN_RESET);
+ HAL_GPIO_WritePin(GPIOE, GPIO_PIN_3, GPIO_PIN_RESET);
+ HAL_GPIO_WritePin(GPIOE, GPIO_PIN_4, GPIO_PIN_RESET);
+ HAL_GPIO_WritePin(GPIOE, GPIO_PIN_5, GPIO_PIN_RESET);
+ HAL_GPIO_WritePin(GPIOE, GPIO_PIN_6, GPIO_PIN_RESET);
+
+ /* I2C bus Deinit */
+ I2C1_DeInit();
+}
+
+/**
+ * @brief Writes a single data.
+ * @param Addr: I2C address
+ * @param Reg: Reg address
+ * @param Value: Data to be written
+ * @retval None
+ */
+void AUDIO_IO_Write(uint8_t Addr, uint8_t Reg, uint8_t Value)
+{
+ I2C1_WriteBuffer(Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, &Value, 1);
+}
+
+/**
+ * @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)
+{
+ uint8_t Read_Value = 0;
+
+ I2C1_ReadBuffer((uint16_t) Addr, (uint16_t) Reg, I2C_MEMADD_SIZE_8BIT, &Read_Value, 1);
+
+ return Read_Value;
+}
+
+/**
+ * @brief AUDIO Codec delay
+ * @param Delay: Delay in ms
+ * @retval None
+ */
+void AUDIO_IO_Delay(uint32_t Delay)
+{
+ HAL_Delay(Delay);
+}
+#endif /* HAL_I2C_MODULE_ENABLED */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+