STM32F429I-Discovery BSP User Manual: stm32f429i_discovery.c Source File

STM32F429I-Discovery BSP Driver

stm32f429i_discovery.c
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00001 /**
00002   ******************************************************************************
00003   * @file    stm32f429i_discovery.c
00004   * @author  MCD Application Team
00005   * @version V2.1.5
00006   * @date    27-January-2017
00007   * @brief   This file provides set of firmware functions to manage Leds and
00008   *          push-button available on STM32F429I-Discovery Kit from STMicroelectronics.
00009   ******************************************************************************
00010   * @attention
00011   *
00012   * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
00013   *
00014   * Redistribution and use in source and binary forms, with or without modification,
00015   * are permitted provided that the following conditions are met:
00016   *   1. Redistributions of source code must retain the above copyright notice,
00017   *      this list of conditions and the following disclaimer.
00018   *   2. Redistributions in binary form must reproduce the above copyright notice,
00019   *      this list of conditions and the following disclaimer in the documentation
00020   *      and/or other materials provided with the distribution.
00021   *   3. Neither the name of STMicroelectronics nor the names of its contributors
00022   *      may be used to endorse or promote products derived from this software
00023   *      without specific prior written permission.
00024   *
00025   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00026   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00027   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00028   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
00029   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00030   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00031   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00032   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00033   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00034   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00035   *
00036   ******************************************************************************
00037   */  
00038   
00039 /* Includes ------------------------------------------------------------------*/
00040 #include "stm32f429i_discovery.h"
00041 
00042 /** @defgroup BSP BSP
00043   * @{
00044   */ 
00045 
00046 /** @defgroup STM32F429I_DISCOVERY STM32F429I DISCOVERY
00047   * @{
00048   */
00049       
00050 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL STM32F429I DISCOVERY LOW LEVEL
00051   * @brief This file provides set of firmware functions to manage Leds and push-button
00052   *        available on STM32F429I-Discovery Kit from STMicroelectronics.
00053   * @{
00054   */ 
00055 
00056 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_TypesDefinitions STM32F429I DISCOVERY LOW LEVEL Private TypesDefinitions
00057   * @{
00058   */ 
00059 /**
00060   * @}
00061   */ 
00062 
00063 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Defines STM32F429I DISCOVERY LOW LEVEL Private Defines
00064   * @{
00065   */ 
00066   
00067   /**
00068   * @brief STM32F429I DISCO BSP Driver version number V2.1.5
00069   */
00070 #define __STM32F429I_DISCO_BSP_VERSION_MAIN   (0x02) /*!< [31:24] main version */
00071 #define __STM32F429I_DISCO_BSP_VERSION_SUB1   (0x01) /*!< [23:16] sub1 version */
00072 #define __STM32F429I_DISCO_BSP_VERSION_SUB2   (0x05) /*!< [15:8]  sub2 version */
00073 #define __STM32F429I_DISCO_BSP_VERSION_RC     (0x00) /*!< [7:0]  release candidate */ 
00074 #define __STM32F429I_DISCO_BSP_VERSION        ((__STM32F429I_DISCO_BSP_VERSION_MAIN << 24)\
00075                                              |(__STM32F429I_DISCO_BSP_VERSION_SUB1 << 16)\
00076                                              |(__STM32F429I_DISCO_BSP_VERSION_SUB2 << 8 )\
00077                                              |(__STM32F429I_DISCO_BSP_VERSION_RC)) 
00078 /**
00079   * @}
00080   */ 
00081 
00082 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Macros STM32F429I DISCOVERY LOW LEVEL Private Macros
00083   * @{
00084   */ 
00085 /**
00086   * @}
00087   */ 
00088 
00089 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Variables STM32F429I DISCOVERY LOW LEVEL Private Variables
00090   * @{
00091   */ 
00092 GPIO_TypeDef* GPIO_PORT[LEDn] = {LED3_GPIO_PORT, 
00093                                  LED4_GPIO_PORT};
00094 
00095 const uint16_t GPIO_PIN[LEDn] = {LED3_PIN, 
00096                                  LED4_PIN};
00097 
00098 GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {KEY_BUTTON_GPIO_PORT}; 
00099 const uint16_t BUTTON_PIN[BUTTONn] = {KEY_BUTTON_PIN}; 
00100 const uint8_t BUTTON_IRQn[BUTTONn] = {KEY_BUTTON_EXTI_IRQn};
00101 
00102 uint32_t I2cxTimeout = I2Cx_TIMEOUT_MAX; /*<! Value of Timeout when I2C communication fails */  
00103 uint32_t SpixTimeout = SPIx_TIMEOUT_MAX; /*<! Value of Timeout when SPI communication fails */  
00104 
00105 I2C_HandleTypeDef I2cHandle;
00106 static SPI_HandleTypeDef SpiHandle;
00107 static uint8_t Is_LCD_IO_Initialized = 0;
00108 
00109 /**
00110   * @}
00111   */ 
00112 
00113 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_FunctionPrototypes STM32F429I DISCOVERY LOW LEVEL Private FunctionPrototypes
00114   * @{
00115   */ 
00116 /* I2Cx bus function */
00117 static void               I2Cx_Init(void);
00118 static void               I2Cx_ITConfig(void);
00119 static void               I2Cx_WriteData(uint8_t Addr, uint8_t Reg, uint8_t Value);
00120 static void               I2Cx_WriteBuffer(uint8_t Addr, uint8_t Reg,  uint8_t *pBuffer, uint16_t Length);
00121 static uint8_t            I2Cx_ReadData(uint8_t Addr, uint8_t Reg);
00122 static uint8_t            I2Cx_ReadBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length);
00123 static void               I2Cx_Error(void);
00124 static void               I2Cx_MspInit(I2C_HandleTypeDef *hi2c);  
00125 #ifdef EE_M24LR64
00126 static HAL_StatusTypeDef  I2Cx_WriteBufferDMA(uint8_t Addr, uint16_t Reg,  uint8_t *pBuffer, uint16_t Length);
00127 static HAL_StatusTypeDef  I2Cx_ReadBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length);
00128 static HAL_StatusTypeDef  I2Cx_IsDeviceReady(uint16_t DevAddress, uint32_t Trials);
00129 #endif /* EE_M24LR64 */
00130 
00131 /* SPIx bus function */
00132 static void               SPIx_Init(void);
00133 static void               SPIx_Write(uint16_t Value);
00134 static uint32_t           SPIx_Read(uint8_t ReadSize);
00135 static uint8_t            SPIx_WriteRead(uint8_t Byte);
00136 static void               SPIx_Error(void);
00137 static void               SPIx_MspInit(SPI_HandleTypeDef *hspi);
00138 
00139 /* Link function for LCD peripheral */
00140 void                      LCD_IO_Init(void);
00141 void                      LCD_IO_WriteData(uint16_t RegValue);
00142 void                      LCD_IO_WriteReg(uint8_t Reg);
00143 uint32_t                  LCD_IO_ReadData(uint16_t RegValue, uint8_t ReadSize);
00144 void                      LCD_Delay(uint32_t delay);
00145 
00146 /* IOExpander IO functions */
00147 void                      IOE_Init(void);
00148 void                      IOE_ITConfig(void);
00149 void                      IOE_Delay(uint32_t Delay);
00150 void                      IOE_Write(uint8_t Addr, uint8_t Reg, uint8_t Value);
00151 uint8_t                   IOE_Read(uint8_t Addr, uint8_t Reg);
00152 uint16_t                  IOE_ReadMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length);
00153 void                      IOE_WriteMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length);
00154 
00155 /* Link function for GYRO peripheral */
00156 void                      GYRO_IO_Init(void);
00157 void                      GYRO_IO_Write(uint8_t* pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite);
00158 void                      GYRO_IO_Read(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead);
00159 
00160 #ifdef EE_M24LR64
00161 /* Link function for I2C EEPROM peripheral */
00162 void                      EEPROM_IO_Init(void);
00163 HAL_StatusTypeDef         EEPROM_IO_WriteData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize);
00164 HAL_StatusTypeDef         EEPROM_IO_ReadData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize);
00165 HAL_StatusTypeDef         EEPROM_IO_IsDeviceReady(uint16_t DevAddress, uint32_t Trials);
00166 #endif /* EE_M24LR64 */
00167 
00168 /**
00169   * @}
00170   */ 
00171 
00172 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Functions STM32F429I DISCOVERY LOW LEVEL Private Functions
00173   * @{
00174   */ 
00175 
00176 /**
00177   * @brief  This method returns the STM32F429I DISCO BSP Driver revision
00178   * @retval version: 0xXYZR (8bits for each decimal, R for RC)
00179   */
00180 uint32_t BSP_GetVersion(void)
00181 {
00182   return __STM32F429I_DISCO_BSP_VERSION;
00183 }
00184 
00185 /**
00186   * @brief  Configures LED GPIO.
00187   * @param  Led: Specifies the Led to be configured. 
00188   *   This parameter can be one of following parameters:
00189   *     @arg LED3
00190   *     @arg LED4
00191   */
00192 void BSP_LED_Init(Led_TypeDef Led)
00193 {
00194   GPIO_InitTypeDef  GPIO_InitStruct;
00195   
00196   /* Enable the GPIO_LED Clock */
00197   LEDx_GPIO_CLK_ENABLE(Led);
00198 
00199   /* Configure the GPIO_LED pin */
00200   GPIO_InitStruct.Pin = GPIO_PIN[Led];
00201   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
00202   GPIO_InitStruct.Pull = GPIO_PULLUP;
00203   GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
00204   
00205   HAL_GPIO_Init(GPIO_PORT[Led], &GPIO_InitStruct);
00206   
00207   HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_RESET); 
00208 }
00209 
00210 /**
00211   * @brief  Turns selected LED On.
00212   * @param  Led: Specifies the Led to be set on. 
00213   *   This parameter can be one of following parameters:
00214   *     @arg LED3
00215   *     @arg LED4 
00216   */
00217 void BSP_LED_On(Led_TypeDef Led)
00218 {
00219   HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_SET); 
00220 }
00221 
00222 /**
00223   * @brief  Turns selected LED Off.
00224   * @param  Led: Specifies the Led to be set off. 
00225   *   This parameter can be one of following parameters:
00226   *     @arg LED3
00227   *     @arg LED4
00228   */
00229 void BSP_LED_Off(Led_TypeDef Led)
00230 {
00231   HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_RESET); 
00232 }
00233 
00234 /**
00235   * @brief  Toggles the selected LED.
00236   * @param  Led: Specifies the Led to be toggled. 
00237   *   This parameter can be one of following parameters:
00238   *     @arg LED3
00239   *     @arg LED4  
00240   */
00241 void BSP_LED_Toggle(Led_TypeDef Led)
00242 {
00243   HAL_GPIO_TogglePin(GPIO_PORT[Led], GPIO_PIN[Led]);
00244 }
00245 
00246 /**
00247   * @brief  Configures Button GPIO and EXTI Line.
00248   * @param  Button: Specifies the Button to be configured.
00249   *   This parameter should be: BUTTON_KEY
00250   * @param  ButtonMode: Specifies Button mode.
00251   *   This parameter can be one of following parameters:   
00252   *     @arg BUTTON_MODE_GPIO: Button will be used as simple IO 
00253   *     @arg BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt
00254   *                            generation capability  
00255   */
00256 void BSP_PB_Init(Button_TypeDef Button, ButtonMode_TypeDef ButtonMode)
00257 {
00258   GPIO_InitTypeDef GPIO_InitStruct;
00259   
00260   /* Enable the BUTTON Clock */
00261   BUTTONx_GPIO_CLK_ENABLE(Button);
00262   
00263   if (ButtonMode == BUTTON_MODE_GPIO)
00264   {
00265     /* Configure Button pin as input */
00266     GPIO_InitStruct.Pin = BUTTON_PIN[Button];
00267     GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
00268     GPIO_InitStruct.Pull = GPIO_PULLDOWN;
00269     GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
00270     HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStruct);
00271   }
00272   
00273   if (ButtonMode == BUTTON_MODE_EXTI)
00274   {
00275     /* Configure Button pin as input with External interrupt */
00276     GPIO_InitStruct.Pin = BUTTON_PIN[Button];
00277     GPIO_InitStruct.Pull = GPIO_NOPULL;
00278     GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING; 
00279     HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStruct);
00280     
00281     /* Enable and set Button EXTI Interrupt to the lowest priority */
00282     HAL_NVIC_SetPriority((IRQn_Type)(BUTTON_IRQn[Button]), 0x0F, 0x00);
00283     HAL_NVIC_EnableIRQ((IRQn_Type)(BUTTON_IRQn[Button]));
00284   }
00285 }
00286 
00287 /**
00288   * @brief  Returns the selected Button state.
00289   * @param  Button: Specifies the Button to be checked.
00290   *   This parameter should be: BUTTON_KEY  
00291   * @retval The Button GPIO pin value.
00292   */
00293 uint32_t BSP_PB_GetState(Button_TypeDef Button)
00294 {
00295   return HAL_GPIO_ReadPin(BUTTON_PORT[Button], BUTTON_PIN[Button]);
00296 }
00297 
00298 /*******************************************************************************
00299                             BUS OPERATIONS
00300 *******************************************************************************/
00301 
00302 /******************************* I2C Routines *********************************/
00303 
00304 /**
00305   * @brief  I2Cx MSP Initialization
00306   * @param  hi2c: I2C handle
00307   */
00308 static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c)
00309 {
00310   GPIO_InitTypeDef  GPIO_InitStruct;  
00311 #ifdef EE_M24LR64
00312   static DMA_HandleTypeDef hdma_tx;
00313   static DMA_HandleTypeDef hdma_rx;
00314   
00315   I2C_HandleTypeDef* pI2cHandle;
00316   pI2cHandle = &I2cHandle;
00317 #endif /* EE_M24LR64 */
00318 
00319   if (hi2c->Instance == DISCOVERY_I2Cx)
00320   {
00321     /* Configure the GPIOs ---------------------------------------------------*/ 
00322     /* Enable GPIO clock */
00323     DISCOVERY_I2Cx_SDA_GPIO_CLK_ENABLE();
00324     DISCOVERY_I2Cx_SCL_GPIO_CLK_ENABLE();
00325       
00326     /* Configure I2C Tx as alternate function  */
00327     GPIO_InitStruct.Pin       = DISCOVERY_I2Cx_SCL_PIN;
00328     GPIO_InitStruct.Mode      = GPIO_MODE_AF_OD;
00329     GPIO_InitStruct.Pull      = GPIO_NOPULL;
00330     GPIO_InitStruct.Speed     = GPIO_SPEED_FAST;
00331     GPIO_InitStruct.Alternate = DISCOVERY_I2Cx_SCL_SDA_AF;
00332     HAL_GPIO_Init(DISCOVERY_I2Cx_SCL_GPIO_PORT, &GPIO_InitStruct);
00333       
00334     /* Configure I2C Rx as alternate function  */
00335     GPIO_InitStruct.Pin = DISCOVERY_I2Cx_SDA_PIN;
00336     HAL_GPIO_Init(DISCOVERY_I2Cx_SDA_GPIO_PORT, &GPIO_InitStruct);
00337     
00338     
00339     /* Configure the Discovery I2Cx peripheral -------------------------------*/ 
00340     /* Enable I2C3 clock */
00341     DISCOVERY_I2Cx_CLOCK_ENABLE();
00342     
00343     /* Force the I2C Peripheral Clock Reset */  
00344     DISCOVERY_I2Cx_FORCE_RESET();
00345       
00346     /* Release the I2C Peripheral Clock Reset */  
00347     DISCOVERY_I2Cx_RELEASE_RESET(); 
00348     
00349     /* Enable and set Discovery I2Cx Interrupt to the lowest priority */
00350     HAL_NVIC_SetPriority(DISCOVERY_I2Cx_EV_IRQn, 0x0F, 0);
00351     HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_EV_IRQn);
00352     
00353     /* Enable and set Discovery I2Cx Interrupt to the lowest priority */
00354     HAL_NVIC_SetPriority(DISCOVERY_I2Cx_ER_IRQn, 0x0F, 0);
00355     HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_ER_IRQn);  
00356 
00357 #ifdef EE_M24LR64
00358     /* I2C DMA TX and RX channels configuration */
00359     /* Enable the DMA clock */
00360     EEPROM_I2C_DMA_CLK_ENABLE();
00361     
00362     /* Configure the DMA stream for the EE I2C peripheral TX direction */
00363     /* Configure the DMA Stream */
00364     hdma_tx.Instance                  = EEPROM_I2C_DMA_STREAM_TX;
00365     /* Set the parameters to be configured */
00366     hdma_tx.Init.Channel              = EEPROM_I2C_DMA_CHANNEL;  
00367     hdma_tx.Init.Direction            = DMA_MEMORY_TO_PERIPH;
00368     hdma_tx.Init.PeriphInc            = DMA_PINC_DISABLE;
00369     hdma_tx.Init.MemInc               = DMA_MINC_ENABLE;
00370     hdma_tx.Init.PeriphDataAlignment  = DMA_PDATAALIGN_BYTE;
00371     hdma_tx.Init.MemDataAlignment     = DMA_MDATAALIGN_BYTE;
00372     hdma_tx.Init.Mode                 = DMA_NORMAL;
00373     hdma_tx.Init.Priority             = DMA_PRIORITY_VERY_HIGH;
00374     hdma_tx.Init.FIFOMode             = DMA_FIFOMODE_ENABLE;         
00375     hdma_tx.Init.FIFOThreshold        = DMA_FIFO_THRESHOLD_FULL;
00376     hdma_tx.Init.MemBurst             = DMA_MBURST_SINGLE;
00377     hdma_tx.Init.PeriphBurst          = DMA_PBURST_SINGLE; 
00378 
00379     /* Associate the initilalized hdma_tx handle to the the pI2cHandle handle */
00380     __HAL_LINKDMA(pI2cHandle, hdmatx, hdma_tx);
00381     
00382     /* Configure the DMA Stream */
00383     HAL_DMA_Init(&hdma_tx);
00384     
00385     /* Configure and enable I2C DMA TX Channel interrupt */
00386     HAL_NVIC_SetPriority((IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn), EEPROM_I2C_DMA_PREPRIO, 0);
00387     HAL_NVIC_EnableIRQ((IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn));
00388     
00389     /* Configure the DMA stream for the EE I2C peripheral TX direction */
00390     /* Configure the DMA Stream */
00391     hdma_rx.Instance                  = EEPROM_I2C_DMA_STREAM_RX;
00392     /* Set the parameters to be configured */
00393     hdma_rx.Init.Channel              = EEPROM_I2C_DMA_CHANNEL;  
00394     hdma_rx.Init.Direction            = DMA_PERIPH_TO_MEMORY;
00395     hdma_rx.Init.PeriphInc            = DMA_PINC_DISABLE;
00396     hdma_rx.Init.MemInc               = DMA_MINC_ENABLE;
00397     hdma_rx.Init.PeriphDataAlignment  = DMA_PDATAALIGN_BYTE;
00398     hdma_rx.Init.MemDataAlignment     = DMA_MDATAALIGN_BYTE;
00399     hdma_rx.Init.Mode                 = DMA_NORMAL;
00400     hdma_rx.Init.Priority             = DMA_PRIORITY_VERY_HIGH;
00401     hdma_rx.Init.FIFOMode             = DMA_FIFOMODE_ENABLE;         
00402     hdma_rx.Init.FIFOThreshold        = DMA_FIFO_THRESHOLD_FULL;
00403     hdma_rx.Init.MemBurst             = DMA_MBURST_SINGLE;
00404     hdma_rx.Init.PeriphBurst          = DMA_PBURST_SINGLE; 
00405 
00406     /* Associate the initilalized hdma_rx handle to the the pI2cHandle handle*/
00407     __HAL_LINKDMA(pI2cHandle, hdmarx, hdma_rx);
00408     
00409     /* Configure the DMA Stream */
00410     HAL_DMA_Init(&hdma_rx);
00411     
00412     /* Configure and enable I2C DMA RX Channel interrupt */
00413     HAL_NVIC_SetPriority((IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn), EEPROM_I2C_DMA_PREPRIO, 0);
00414     HAL_NVIC_EnableIRQ((IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn));
00415 #endif /* EE_M24LR64 */
00416   }
00417 }
00418 
00419 /**
00420   * @brief  I2Cx Bus initialization.
00421   */
00422 static void I2Cx_Init(void)
00423 {
00424   if(HAL_I2C_GetState(&I2cHandle) == HAL_I2C_STATE_RESET)
00425   {
00426     I2cHandle.Instance              = DISCOVERY_I2Cx;
00427     I2cHandle.Init.ClockSpeed       = BSP_I2C_SPEED;
00428     I2cHandle.Init.DutyCycle        = I2C_DUTYCYCLE_2;
00429     I2cHandle.Init.OwnAddress1      = 0;
00430     I2cHandle.Init.AddressingMode   = I2C_ADDRESSINGMODE_7BIT;
00431     I2cHandle.Init.DualAddressMode  = I2C_DUALADDRESS_DISABLED;
00432     I2cHandle.Init.OwnAddress2      = 0;
00433     I2cHandle.Init.GeneralCallMode  = I2C_GENERALCALL_DISABLED;
00434     I2cHandle.Init.NoStretchMode    = I2C_NOSTRETCH_DISABLED;  
00435     
00436     /* Init the I2C */
00437     I2Cx_MspInit(&I2cHandle);
00438     HAL_I2C_Init(&I2cHandle);
00439   }
00440 }
00441 
00442 /**
00443   * @brief  Configures Interruption pin for I2C communication.
00444   */
00445 static void I2Cx_ITConfig(void)
00446 {
00447   GPIO_InitTypeDef  GPIO_InitStruct;
00448     
00449   /* Enable the GPIO EXTI Clock */
00450   STMPE811_INT_CLK_ENABLE();
00451   
00452   GPIO_InitStruct.Pin   = STMPE811_INT_PIN;
00453   GPIO_InitStruct.Pull  = GPIO_PULLUP;
00454   GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
00455   GPIO_InitStruct.Mode  = GPIO_MODE_IT_FALLING;
00456   HAL_GPIO_Init(STMPE811_INT_GPIO_PORT, &GPIO_InitStruct);
00457     
00458   /* Enable and set GPIO EXTI Interrupt to the highest priority */
00459   HAL_NVIC_SetPriority((IRQn_Type)(STMPE811_INT_EXTI), 0x0F, 0x00);
00460   HAL_NVIC_EnableIRQ((IRQn_Type)(STMPE811_INT_EXTI));
00461 }
00462 
00463 /**
00464   * @brief  Writes a value in a register of the device through BUS.
00465   * @param  Addr: Device address on BUS Bus.  
00466   * @param  Reg: The target register address to write
00467   * @param  Value: The target register value to be written 
00468   */
00469 static void I2Cx_WriteData(uint8_t Addr, uint8_t Reg, uint8_t Value)
00470   {
00471   HAL_StatusTypeDef status = HAL_OK;
00472   
00473   status = HAL_I2C_Mem_Write(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, &Value, 1, I2cxTimeout); 
00474   
00475   /* Check the communication status */
00476   if(status != HAL_OK)
00477   {
00478     /* Re-Initialize the BUS */
00479     I2Cx_Error();
00480   }        
00481 }
00482 
00483 /**
00484   * @brief  Writes a value in a register of the device through BUS.
00485   * @param  Addr: Device address on BUS Bus.  
00486   * @param  Reg: The target register address to write
00487   * @param  pBuffer: The target register value to be written 
00488   * @param  Length: buffer size to be written
00489   */
00490 static void I2Cx_WriteBuffer(uint8_t Addr, uint8_t Reg,  uint8_t *pBuffer, uint16_t Length)
00491   {
00492   HAL_StatusTypeDef status = HAL_OK;
00493   
00494   status = HAL_I2C_Mem_Write(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, pBuffer, Length, I2cxTimeout); 
00495 
00496   /* Check the communication status */
00497   if(status != HAL_OK)
00498   {
00499     /* Re-Initialize the BUS */
00500     I2Cx_Error();
00501   }        
00502 }
00503 
00504 /**
00505   * @brief  Reads a register of the device through BUS.
00506   * @param  Addr: Device address on BUS Bus.  
00507   * @param  Reg: The target register address to write
00508   * @retval Data read at register address
00509   */
00510 static uint8_t I2Cx_ReadData(uint8_t Addr, uint8_t Reg)
00511 {
00512   HAL_StatusTypeDef status = HAL_OK;
00513   uint8_t value = 0;
00514   
00515   status = HAL_I2C_Mem_Read(&I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_8BIT, &value, 1, I2cxTimeout);
00516  
00517   /* Check the communication status */
00518   if(status != HAL_OK)
00519   {
00520     /* Re-Initialize the BUS */
00521     I2Cx_Error();
00522   
00523   }
00524   return value;
00525 }
00526 
00527 /**
00528   * @brief  Reads multiple data on the BUS.
00529   * @param  Addr: I2C Address
00530   * @param  Reg: Reg Address 
00531   * @param  pBuffer: pointer to read data buffer
00532   * @param  Length: length of the data
00533   * @retval 0 if no problems to read multiple data
00534   */
00535 static uint8_t I2Cx_ReadBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length)
00536 {
00537   HAL_StatusTypeDef status = HAL_OK;
00538 
00539   status = HAL_I2C_Mem_Read(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, pBuffer, Length, I2cxTimeout);
00540   
00541   /* Check the communication status */
00542   if(status == HAL_OK)
00543   {
00544     return 0;
00545   }
00546   else
00547   {
00548     /* Re-Initialize the BUS */
00549     I2Cx_Error();
00550 
00551     return 1;
00552   }
00553 }
00554 
00555 #ifdef EE_M24LR64
00556 /**
00557   * @brief  Writes a value in a register of the device through BUS in using DMA mode.
00558   * @param  Addr: Device address on BUS Bus.  
00559   * @param  Reg: The target register address to write
00560   * @param  pBuffer: The target register value to be written 
00561   * @param  Length: buffer size to be written
00562   * @retval HAL status
00563   */
00564 static HAL_StatusTypeDef I2Cx_WriteBufferDMA(uint8_t Addr, uint16_t Reg,  uint8_t *pBuffer, uint16_t Length)
00565   {
00566   HAL_StatusTypeDef status = HAL_OK;
00567   
00568   status = HAL_I2C_Mem_Write_DMA(&I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_16BIT, pBuffer, Length);
00569 
00570   /* Check the communication status */
00571   if(status != HAL_OK)
00572   {
00573     /* Re-Initialize the BUS */
00574     I2Cx_Error();
00575   }
00576 
00577   return status;
00578 }
00579 
00580 /**
00581   * @brief  Reads multiple data on the BUS in using DMA mode.
00582   * @param  Addr: I2C Address
00583   * @param  Reg: Reg Address 
00584   * @param  pBuffer: pointer to read data buffer
00585   * @param  Length: length of the data
00586   * @retval HAL status
00587   */
00588 static HAL_StatusTypeDef I2Cx_ReadBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length)
00589 {
00590   HAL_StatusTypeDef status = HAL_OK;
00591 
00592   status = HAL_I2C_Mem_Read_DMA(&I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_16BIT, pBuffer, Length);
00593   
00594   /* Check the communication status */
00595   if(status != HAL_OK)
00596   {
00597     /* Re-Initialize the BUS */
00598     I2Cx_Error();
00599   }
00600   
00601   return status;
00602 }
00603 
00604 /**
00605 * @brief  Checks if target device is ready for communication. 
00606 * @note   This function is used with Memory devices
00607 * @param  DevAddress: Target device address
00608 * @param  Trials: Number of trials
00609 * @retval HAL status
00610 */
00611 static HAL_StatusTypeDef I2Cx_IsDeviceReady(uint16_t DevAddress, uint32_t Trials)
00612 { 
00613   return (HAL_I2C_IsDeviceReady(&I2cHandle, DevAddress, Trials, I2cxTimeout));
00614 }
00615 #endif /* EE_M24LR64 */
00616 
00617 /**
00618   * @brief  I2Cx error treatment function
00619   */
00620 static void I2Cx_Error(void)
00621 {
00622   /* De-initialize the SPI communication BUS */
00623   HAL_I2C_DeInit(&I2cHandle);
00624   
00625   /* Re-Initialize the SPI communication BUS */
00626   I2Cx_Init();
00627 }
00628 
00629 /******************************* SPI Routines *********************************/
00630 
00631 /**
00632   * @brief  SPIx Bus initialization
00633   */
00634 static void SPIx_Init(void)
00635 {
00636   if(HAL_SPI_GetState(&SpiHandle) == HAL_SPI_STATE_RESET)
00637   {
00638     /* SPI configuration -----------------------------------------------------*/
00639     SpiHandle.Instance = DISCOVERY_SPIx;
00640     /* SPI baudrate is set to 5.6 MHz (PCLK2/SPI_BaudRatePrescaler = 90/16 = 5.625 MHz) 
00641        to verify these constraints:
00642        - ILI9341 LCD SPI interface max baudrate is 10MHz for write and 6.66MHz for read
00643        - l3gd20 SPI interface max baudrate is 10MHz for write/read
00644        - PCLK2 frequency is set to 90 MHz 
00645     */  
00646     SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
00647 
00648     /* On STM32F429I-Discovery, LCD ID cannot be read then keep a common configuration */
00649     /* for LCD and GYRO (SPI_DIRECTION_2LINES) */
00650     /* Note: To read a register a LCD, SPI_DIRECTION_1LINE should be set */
00651     SpiHandle.Init.Direction      = SPI_DIRECTION_2LINES;
00652     SpiHandle.Init.CLKPhase       = SPI_PHASE_1EDGE;
00653     SpiHandle.Init.CLKPolarity    = SPI_POLARITY_LOW;
00654     SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
00655     SpiHandle.Init.CRCPolynomial  = 7;
00656     SpiHandle.Init.DataSize       = SPI_DATASIZE_8BIT;
00657     SpiHandle.Init.FirstBit       = SPI_FIRSTBIT_MSB;
00658     SpiHandle.Init.NSS            = SPI_NSS_SOFT;
00659     SpiHandle.Init.TIMode         = SPI_TIMODE_DISABLED;
00660     SpiHandle.Init.Mode           = SPI_MODE_MASTER;
00661   
00662     SPIx_MspInit(&SpiHandle);
00663     HAL_SPI_Init(&SpiHandle);
00664   } 
00665 }
00666 
00667 /**
00668   * @brief  Reads 4 bytes from device.
00669   * @param  ReadSize: Number of bytes to read (max 4 bytes)
00670   * @retval Value read on the SPI
00671   */
00672 static uint32_t SPIx_Read(uint8_t ReadSize)
00673 {
00674   HAL_StatusTypeDef status = HAL_OK;
00675   uint32_t readvalue;
00676   
00677   status = HAL_SPI_Receive(&SpiHandle, (uint8_t*) &readvalue, ReadSize, SpixTimeout);
00678   
00679   /* Check the communication status */
00680   if(status != HAL_OK)
00681   {
00682     /* Re-Initialize the BUS */
00683     SPIx_Error();
00684   }
00685   
00686   return readvalue;
00687 }
00688 
00689 /**
00690   * @brief  Writes a byte to device.
00691   * @param  Value: value to be written
00692   */
00693 static void SPIx_Write(uint16_t Value)
00694 {
00695   HAL_StatusTypeDef status = HAL_OK;
00696   
00697   status = HAL_SPI_Transmit(&SpiHandle, (uint8_t*) &Value, 1, SpixTimeout);
00698   
00699   /* Check the communication status */
00700   if(status != HAL_OK)
00701   {
00702     /* Re-Initialize the BUS */
00703     SPIx_Error();
00704   }
00705 }
00706 
00707 /**
00708   * @brief  Sends a Byte through the SPI interface and return the Byte received 
00709   *         from the SPI bus.
00710   * @param  Byte: Byte send.
00711   * @retval The received byte value
00712   */
00713 static uint8_t SPIx_WriteRead(uint8_t Byte)
00714 {
00715   uint8_t receivedbyte = 0;
00716   
00717   /* Send a Byte through the SPI peripheral */
00718   /* Read byte from the SPI bus */
00719   if(HAL_SPI_TransmitReceive(&SpiHandle, (uint8_t*) &Byte, (uint8_t*) &receivedbyte, 1, SpixTimeout) != HAL_OK)
00720   {
00721     SPIx_Error();
00722   }
00723   
00724   return receivedbyte;
00725 }
00726 
00727 /**
00728   * @brief  SPIx error treatment function.
00729   */
00730 static void SPIx_Error(void)
00731 {
00732   /* De-initialize the SPI communication BUS */
00733   HAL_SPI_DeInit(&SpiHandle);
00734   
00735   /* Re- Initialize the SPI communication BUS */
00736   SPIx_Init();
00737 }
00738 
00739 /**
00740   * @brief  SPI MSP Init.
00741   * @param  hspi: SPI handle
00742   */
00743 static void SPIx_MspInit(SPI_HandleTypeDef *hspi)
00744 {
00745   GPIO_InitTypeDef   GPIO_InitStructure;
00746 
00747   /* Enable SPIx clock */
00748   DISCOVERY_SPIx_CLK_ENABLE();
00749 
00750   /* Enable DISCOVERY_SPI GPIO clock */
00751   DISCOVERY_SPIx_GPIO_CLK_ENABLE();
00752 
00753   /* configure SPI SCK, MOSI and MISO */    
00754   GPIO_InitStructure.Pin    = (DISCOVERY_SPIx_SCK_PIN | DISCOVERY_SPIx_MOSI_PIN | DISCOVERY_SPIx_MISO_PIN);
00755   GPIO_InitStructure.Mode   = GPIO_MODE_AF_PP;
00756   GPIO_InitStructure.Pull   = GPIO_PULLDOWN;
00757   GPIO_InitStructure.Speed  = GPIO_SPEED_MEDIUM;
00758   GPIO_InitStructure.Alternate = DISCOVERY_SPIx_AF;
00759   HAL_GPIO_Init(DISCOVERY_SPIx_GPIO_PORT, &GPIO_InitStructure);      
00760 }
00761 
00762 /********************************* LINK LCD ***********************************/
00763 
00764 /**
00765   * @brief  Configures the LCD_SPI interface.
00766   */
00767 void LCD_IO_Init(void)
00768 {
00769   GPIO_InitTypeDef GPIO_InitStructure;
00770   
00771   if(Is_LCD_IO_Initialized == 0)
00772   {
00773     Is_LCD_IO_Initialized = 1; 
00774     
00775     /* Configure NCS in Output Push-Pull mode */
00776     LCD_WRX_GPIO_CLK_ENABLE();
00777     GPIO_InitStructure.Pin     = LCD_WRX_PIN;
00778     GPIO_InitStructure.Mode    = GPIO_MODE_OUTPUT_PP;
00779     GPIO_InitStructure.Pull    = GPIO_NOPULL;
00780     GPIO_InitStructure.Speed   = GPIO_SPEED_FAST;
00781     HAL_GPIO_Init(LCD_WRX_GPIO_PORT, &GPIO_InitStructure);
00782     
00783     LCD_RDX_GPIO_CLK_ENABLE();
00784     GPIO_InitStructure.Pin     = LCD_RDX_PIN;
00785     GPIO_InitStructure.Mode    = GPIO_MODE_OUTPUT_PP;
00786     GPIO_InitStructure.Pull    = GPIO_NOPULL;
00787     GPIO_InitStructure.Speed   = GPIO_SPEED_FAST;
00788     HAL_GPIO_Init(LCD_RDX_GPIO_PORT, &GPIO_InitStructure);
00789     
00790     /* Configure the LCD Control pins ----------------------------------------*/
00791     LCD_NCS_GPIO_CLK_ENABLE();
00792     
00793     /* Configure NCS in Output Push-Pull mode */
00794     GPIO_InitStructure.Pin     = LCD_NCS_PIN;
00795     GPIO_InitStructure.Mode    = GPIO_MODE_OUTPUT_PP;
00796     GPIO_InitStructure.Pull    = GPIO_NOPULL;
00797     GPIO_InitStructure.Speed   = GPIO_SPEED_FAST;
00798     HAL_GPIO_Init(LCD_NCS_GPIO_PORT, &GPIO_InitStructure);
00799     
00800     /* Set or Reset the control line */
00801     LCD_CS_LOW();
00802     LCD_CS_HIGH();
00803     
00804     SPIx_Init();
00805   }
00806 }
00807 
00808 /**
00809   * @brief  Writes register value.
00810   */
00811 void LCD_IO_WriteData(uint16_t RegValue) 
00812 {
00813   /* Set WRX to send data */
00814   LCD_WRX_HIGH();
00815   
00816   /* Reset LCD control line(/CS) and Send data */  
00817   LCD_CS_LOW();
00818   SPIx_Write(RegValue);
00819   
00820   /* Deselect: Chip Select high */
00821   LCD_CS_HIGH();
00822 }
00823 
00824 /**
00825   * @brief  Writes register address.
00826   */
00827 void LCD_IO_WriteReg(uint8_t Reg) 
00828 {
00829   /* Reset WRX to send command */
00830   LCD_WRX_LOW();
00831   
00832   /* Reset LCD control line(/CS) and Send command */
00833   LCD_CS_LOW();
00834   SPIx_Write(Reg);
00835   
00836   /* Deselect: Chip Select high */
00837   LCD_CS_HIGH();
00838 }
00839 
00840 /**
00841   * @brief  Reads register value.
00842   * @param  RegValue Address of the register to read
00843   * @param  ReadSize Number of bytes to read
00844   * @retval Content of the register value
00845   */
00846 uint32_t LCD_IO_ReadData(uint16_t RegValue, uint8_t ReadSize) 
00847 {
00848   uint32_t readvalue = 0;
00849 
00850   /* Select: Chip Select low */
00851   LCD_CS_LOW();
00852 
00853   /* Reset WRX to send command */
00854   LCD_WRX_LOW();
00855   
00856   SPIx_Write(RegValue);
00857   
00858   readvalue = SPIx_Read(ReadSize);
00859 
00860   /* Set WRX to send data */
00861   LCD_WRX_HIGH();
00862 
00863   /* Deselect: Chip Select high */
00864   LCD_CS_HIGH();
00865   
00866   return readvalue;
00867 }
00868 
00869 /**
00870   * @brief  Wait for loop in ms.
00871   * @param  Delay in ms.
00872   */
00873 void LCD_Delay(uint32_t Delay)
00874 {
00875   HAL_Delay(Delay);
00876 }
00877 
00878 /*******************************************************************************
00879                             LINK OPERATIONS
00880 *******************************************************************************/
00881 
00882 /********************************* LINK IOE ***********************************/
00883 
00884 /**
00885   * @brief  IOE Low Level Initialization.
00886   */
00887 void IOE_Init(void) 
00888 {
00889   I2Cx_Init();
00890 }
00891 
00892 /**
00893   * @brief  IOE Low Level Interrupt configuration.
00894   */
00895 void IOE_ITConfig(void)
00896 {
00897   I2Cx_ITConfig();
00898 }
00899 
00900 /**
00901   * @brief  IOE Writes single data operation.
00902   * @param  Addr: I2C Address
00903   * @param  Reg: Reg Address 
00904   * @param  Value: Data to be written
00905   */
00906 void IOE_Write(uint8_t Addr, uint8_t Reg, uint8_t Value)
00907 {
00908   I2Cx_WriteData(Addr, Reg, Value);
00909 }
00910 
00911 /**
00912   * @brief  IOE Reads single data.
00913   * @param  Addr: I2C Address
00914   * @param  Reg: Reg Address 
00915   * @retval The read data
00916   */
00917 uint8_t IOE_Read(uint8_t Addr, uint8_t Reg)
00918 {
00919   return I2Cx_ReadData(Addr, Reg);
00920 }
00921 
00922 /**
00923   * @brief  IOE Writes multiple data.
00924   * @param  Addr: I2C Address
00925   * @param  Reg: Reg Address 
00926   * @param  pBuffer: pointer to data buffer
00927   * @param  Length: length of the data
00928   */
00929 void IOE_WriteMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length)
00930 {
00931   I2Cx_WriteBuffer(Addr, Reg, pBuffer, Length);
00932 }
00933 
00934 /**
00935   * @brief  IOE Reads multiple data.
00936   * @param  Addr: I2C Address
00937   * @param  Reg: Reg Address 
00938   * @param  pBuffer: pointer to data buffer
00939   * @param  Length: length of the data
00940   * @retval 0 if no problems to read multiple data
00941   */
00942 uint16_t IOE_ReadMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length)
00943 {
00944  return I2Cx_ReadBuffer(Addr, Reg, pBuffer, Length);
00945 }
00946 
00947 /**
00948   * @brief  IOE Delay.
00949   * @param  Delay in ms
00950   */
00951 void IOE_Delay(uint32_t Delay)
00952 {
00953   HAL_Delay(Delay);
00954 }
00955 
00956 /********************************* LINK GYROSCOPE *****************************/
00957 
00958 /**
00959   * @brief  Configures the Gyroscope SPI interface.
00960   */
00961 void GYRO_IO_Init(void)
00962 {
00963   GPIO_InitTypeDef GPIO_InitStructure;
00964   
00965   /* Configure the Gyroscope Control pins ------------------------------------*/
00966   /* Enable CS GPIO clock and Configure GPIO PIN for Gyroscope Chip select */  
00967   GYRO_CS_GPIO_CLK_ENABLE();  
00968   GPIO_InitStructure.Pin = GYRO_CS_PIN;
00969   GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
00970   GPIO_InitStructure.Pull  = GPIO_NOPULL;
00971   GPIO_InitStructure.Speed = GPIO_SPEED_MEDIUM;
00972   HAL_GPIO_Init(GYRO_CS_GPIO_PORT, &GPIO_InitStructure);
00973   
00974   /* Deselect: Chip Select high */
00975   GYRO_CS_HIGH();
00976   
00977   /* Enable INT1, INT2 GPIO clock and Configure GPIO PINs to detect Interrupts */
00978   GYRO_INT_GPIO_CLK_ENABLE();
00979   GPIO_InitStructure.Pin = GYRO_INT1_PIN | GYRO_INT2_PIN;
00980   GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
00981   GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
00982   GPIO_InitStructure.Pull= GPIO_NOPULL;
00983   HAL_GPIO_Init(GYRO_INT_GPIO_PORT, &GPIO_InitStructure);
00984 
00985   SPIx_Init();
00986 }
00987 
00988 /**
00989   * @brief  Writes one byte to the Gyroscope.
00990   * @param  pBuffer: Pointer to the buffer containing the data to be written to the Gyroscope.
00991   * @param  WriteAddr: Gyroscope's internal address to write to.
00992   * @param  NumByteToWrite: Number of bytes to write.
00993   */
00994 void GYRO_IO_Write(uint8_t* pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite)
00995 {
00996   /* Configure the MS bit: 
00997        - When 0, the address will remain unchanged in multiple read/write commands.
00998        - When 1, the address will be auto incremented in multiple read/write commands.
00999   */
01000   if(NumByteToWrite > 0x01)
01001   {
01002     WriteAddr |= (uint8_t)MULTIPLEBYTE_CMD;
01003   }
01004   /* Set chip select Low at the start of the transmission */
01005   GYRO_CS_LOW();
01006   
01007   /* Send the Address of the indexed register */
01008   SPIx_WriteRead(WriteAddr);
01009   
01010   /* Send the data that will be written into the device (MSB First) */
01011   while(NumByteToWrite >= 0x01)
01012   {
01013     SPIx_WriteRead(*pBuffer);
01014     NumByteToWrite--;
01015     pBuffer++;
01016   }
01017   
01018   /* Set chip select High at the end of the transmission */ 
01019   GYRO_CS_HIGH();
01020 }
01021 
01022 /**
01023   * @brief  Reads a block of data from the Gyroscope.
01024   * @param  pBuffer: Pointer to the buffer that receives the data read from the Gyroscope.
01025   * @param  ReadAddr: Gyroscope's internal address to read from.
01026   * @param  NumByteToRead: Number of bytes to read from the Gyroscope.
01027   */
01028 void GYRO_IO_Read(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead)
01029 {  
01030   if(NumByteToRead > 0x01)
01031   {
01032     ReadAddr |= (uint8_t)(READWRITE_CMD | MULTIPLEBYTE_CMD);
01033   }
01034   else
01035   {
01036     ReadAddr |= (uint8_t)READWRITE_CMD;
01037   }
01038   /* Set chip select Low at the start of the transmission */
01039   GYRO_CS_LOW();
01040   
01041   /* Send the Address of the indexed register */
01042   SPIx_WriteRead(ReadAddr);
01043   
01044   /* Receive the data that will be read from the device (MSB First) */
01045   while(NumByteToRead > 0x00)
01046   {
01047     /* Send dummy byte (0x00) to generate the SPI clock to Gyroscope (Slave device) */
01048     *pBuffer = SPIx_WriteRead(DUMMY_BYTE);
01049     NumByteToRead--;
01050     pBuffer++;
01051   }
01052   
01053   /* Set chip select High at the end of the transmission */ 
01054   GYRO_CS_HIGH();
01055 }  
01056 
01057 
01058 #ifdef EE_M24LR64
01059 
01060 /******************************** LINK I2C EEPROM *****************************/
01061 
01062 /**
01063   * @brief  Initializes peripherals used by the I2C EEPROM driver.
01064   */
01065 void EEPROM_IO_Init(void)
01066 {
01067   I2Cx_Init();
01068 }
01069 
01070 /**
01071   * @brief  Writes data to I2C EEPROM driver in using DMA channel.
01072   * @param  DevAddress: Target device address
01073   * @param  MemAddress: Internal memory address
01074   * @param  pBuffer: Pointer to data buffer
01075   * @param  BufferSize: Amount of data to be sent
01076   * @retval HAL status
01077   */
01078 HAL_StatusTypeDef EEPROM_IO_WriteData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize)
01079 {
01080   return (I2Cx_WriteBufferDMA(DevAddress, MemAddress,  pBuffer, BufferSize));
01081 }
01082 
01083 /**
01084   * @brief  Reads data from I2C EEPROM driver in using DMA channel.
01085   * @param  DevAddress: Target device address
01086   * @param  MemAddress: Internal memory address
01087   * @param  pBuffer: Pointer to data buffer
01088   * @param  BufferSize: Amount of data to be read
01089   * @retval HAL status
01090   */
01091 HAL_StatusTypeDef EEPROM_IO_ReadData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize)
01092 {
01093   return (I2Cx_ReadBufferDMA(DevAddress, MemAddress, pBuffer, BufferSize));
01094 }
01095 
01096 /**
01097 * @brief  Checks if target device is ready for communication. 
01098 * @note   This function is used with Memory devices
01099 * @param  DevAddress: Target device address
01100 * @param  Trials: Number of trials
01101 * @retval HAL status
01102 */
01103 HAL_StatusTypeDef EEPROM_IO_IsDeviceReady(uint16_t DevAddress, uint32_t Trials)
01104 { 
01105   return (I2Cx_IsDeviceReady(DevAddress, Trials));
01106 }
01107 #endif /* EE_M24LR64 */
01108 
01109 /**
01110   * @}
01111   */ 
01112 
01113 /**
01114   * @}
01115   */ 
01116 
01117 /**
01118   * @}
01119   */   
01120 
01121 /**
01122   * @}
01123   */ 
01124       
01125 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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