stm32f429i_discovery.c

00001 /**
00002   ******************************************************************************
00003   * @file    stm32f429i_discovery.c
00004   * @author  MCD Application Team
00005   * @brief   This file provides set of firmware functions to manage Leds and
00006   *          push-button available on STM32F429I-Discovery Kit from STMicroelectronics.
00007   ******************************************************************************
00008   * @attention
00009   *
00010   * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
00011   *
00012   * Redistribution and use in source and binary forms, with or without modification,
00013   * are permitted provided that the following conditions are met:
00014   *   1. Redistributions of source code must retain the above copyright notice,
00015   *      this list of conditions and the following disclaimer.
00016   *   2. Redistributions in binary form must reproduce the above copyright notice,
00017   *      this list of conditions and the following disclaimer in the documentation
00018   *      and/or other materials provided with the distribution.
00019   *   3. Neither the name of STMicroelectronics nor the names of its contributors
00020   *      may be used to endorse or promote products derived from this software
00021   *      without specific prior written permission.
00022   *
00023   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00024   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00025   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00026   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
00027   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00028   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00029   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00030   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00031   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00032   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033   *
00034   ******************************************************************************
00035   */  
00036   
00037 /* Includes ------------------------------------------------------------------*/
00038 #include "stm32f429i_discovery.h"
00039 #include "cmsis_nvic.h" // // Added for mbed
00040 
00041 // Added for mbed. This function replaces HAL_Delay()
00042 void wait_ms(int ms);
00043 
00044 /** @defgroup BSP BSP
00045   * @{
00046   */ 
00047 
00048 /** @defgroup STM32F429I_DISCOVERY STM32F429I DISCOVERY
00049   * @{
00050   */
00051       
00052 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL STM32F429I DISCOVERY LOW LEVEL
00053   * @brief This file provides set of firmware functions to manage Leds and push-button
00054   *        available on STM32F429I-Discovery Kit from STMicroelectronics.
00055   * @{
00056   */ 
00057 
00058 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_TypesDefinitions STM32F429I DISCOVERY LOW LEVEL Private TypesDefinitions
00059   * @{
00060   */ 
00061 /**
00062   * @}
00063   */ 
00064 
00065 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Defines STM32F429I DISCOVERY LOW LEVEL Private Defines
00066   * @{
00067   */ 
00068   
00069   /**
00070   * @brief STM32F429I DISCO BSP Driver version number V2.1.6
00071   */
00072 #define __STM32F429I_DISCO_BSP_VERSION_MAIN   (0x02) /*!< [31:24] main version */
00073 #define __STM32F429I_DISCO_BSP_VERSION_SUB1   (0x01) /*!< [23:16] sub1 version */
00074 #define __STM32F429I_DISCO_BSP_VERSION_SUB2   (0x06) /*!< [15:8]  sub2 version */
00075 #define __STM32F429I_DISCO_BSP_VERSION_RC     (0x00) /*!< [7:0]  release candidate */ 
00076 #define __STM32F429I_DISCO_BSP_VERSION        ((__STM32F429I_DISCO_BSP_VERSION_MAIN << 24)\
00077                                              |(__STM32F429I_DISCO_BSP_VERSION_SUB1 << 16)\
00078                                              |(__STM32F429I_DISCO_BSP_VERSION_SUB2 << 8 )\
00079                                              |(__STM32F429I_DISCO_BSP_VERSION_RC)) 
00080 /**
00081   * @}
00082   */ 
00083 
00084 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Macros STM32F429I DISCOVERY LOW LEVEL Private Macros
00085   * @{
00086   */ 
00087 /**
00088   * @}
00089   */ 
00090 
00091 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Variables STM32F429I DISCOVERY LOW LEVEL Private Variables
00092   * @{
00093   */ 
00094 GPIO_TypeDef* GPIO_PORT[LEDn] = {LED3_GPIO_PORT, 
00095                                  LED4_GPIO_PORT};
00096 
00097 const uint16_t GPIO_PIN[LEDn] = {LED3_PIN, 
00098                                  LED4_PIN};
00099 
00100 GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {KEY_BUTTON_GPIO_PORT}; 
00101 const uint16_t BUTTON_PIN[BUTTONn] = {KEY_BUTTON_PIN}; 
00102 const uint8_t BUTTON_IRQn[BUTTONn] = {KEY_BUTTON_EXTI_IRQn};
00103 
00104 uint32_t I2cxTimeout = I2Cx_TIMEOUT_MAX; /*<! Value of Timeout when I2C communication fails */  
00105 uint32_t SpixTimeout = SPIx_TIMEOUT_MAX; /*<! Value of Timeout when SPI communication fails */  
00106 
00107 I2C_HandleTypeDef EEP_I2cHandle;
00108 static SPI_HandleTypeDef SpiHandle;
00109 static uint8_t Is_LCD_IO_Initialized = 0;
00110 
00111 /**
00112   * @}
00113   */ 
00114 
00115 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_FunctionPrototypes STM32F429I DISCOVERY LOW LEVEL Private FunctionPrototypes
00116   * @{
00117   */ 
00118 /* I2Cx bus function */
00119 static void               I2Cx_Init(void);
00120 static void               I2Cx_ITConfig(void);
00121 static void               I2Cx_WriteData(uint8_t Addr, uint8_t Reg, uint8_t Value);
00122 static void               I2Cx_WriteBuffer(uint8_t Addr, uint8_t Reg,  uint8_t *pBuffer, uint16_t Length);
00123 static uint8_t            I2Cx_ReadData(uint8_t Addr, uint8_t Reg);
00124 static uint8_t            I2Cx_ReadBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length);
00125 static void               I2Cx_Error(void);
00126 static void               I2Cx_MspInit(I2C_HandleTypeDef *hi2c);  
00127 #ifdef EE_M24LR64
00128 static HAL_StatusTypeDef  I2Cx_WriteBufferDMA(uint8_t Addr, uint16_t Reg,  uint8_t *pBuffer, uint16_t Length);
00129 static HAL_StatusTypeDef  I2Cx_ReadBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length);
00130 static HAL_StatusTypeDef  I2Cx_IsDeviceReady(uint16_t DevAddress, uint32_t Trials);
00131 static void EEPROM_I2C_DMA_TX_IRQHandler(void);
00132 static void EEPROM_I2C_DMA_RX_IRQHandler(void);
00133 #endif /* EE_M24LR64 */
00134 
00135 /* SPIx bus function */
00136 static void               SPIx_Init(void);
00137 static void               SPIx_Write(uint16_t Value);
00138 static uint32_t           SPIx_Read(uint8_t ReadSize);
00139 static uint8_t            SPIx_WriteRead(uint8_t Byte);
00140 static void               SPIx_Error(void);
00141 static void               SPIx_MspInit(SPI_HandleTypeDef *hspi);
00142 
00143 /* Link function for LCD peripheral */
00144 void                      LCD_IO_Init(void);
00145 void                      LCD_IO_WriteData(uint16_t RegValue);
00146 void                      LCD_IO_WriteReg(uint8_t Reg);
00147 uint32_t                  LCD_IO_ReadData(uint16_t RegValue, uint8_t ReadSize);
00148 void                      LCD_Delay(uint32_t delay);
00149 
00150 /* IOExpander IO functions */
00151 void                      IOE_Init(void);
00152 void                      IOE_ITConfig(void);
00153 void                      IOE_Delay(uint32_t Delay);
00154 void                      IOE_Write(uint8_t Addr, uint8_t Reg, uint8_t Value);
00155 uint8_t                   IOE_Read(uint8_t Addr, uint8_t Reg);
00156 uint16_t                  IOE_ReadMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length);
00157 void                      IOE_WriteMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length);
00158 
00159 /* Link function for GYRO peripheral */
00160 void                      GYRO_IO_Init(void);
00161 void                      GYRO_IO_Write(uint8_t* pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite);
00162 void                      GYRO_IO_Read(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead);
00163 
00164 #ifdef EE_M24LR64
00165 /* Link function for I2C EEPROM peripheral */
00166 void                      EEPROM_IO_Init(void);
00167 HAL_StatusTypeDef         EEPROM_IO_WriteData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize);
00168 HAL_StatusTypeDef         EEPROM_IO_ReadData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize);
00169 HAL_StatusTypeDef         EEPROM_IO_IsDeviceReady(uint16_t DevAddress, uint32_t Trials);
00170 #endif /* EE_M24LR64 */
00171 
00172 /**
00173   * @}
00174   */ 
00175 
00176 /** @defgroup STM32F429I_DISCOVERY_LOW_LEVEL_Private_Functions STM32F429I DISCOVERY LOW LEVEL Private Functions
00177   * @{
00178   */ 
00179 
00180 /**
00181   * @brief  This method returns the STM32F429I DISCO BSP Driver revision
00182   * @retval version: 0xXYZR (8bits for each decimal, R for RC)
00183   */
00184 uint32_t BSP_GetVersion(void)
00185 {
00186   return __STM32F429I_DISCO_BSP_VERSION;
00187 }
00188 
00189 /**
00190   * @brief  Configures LED GPIO.
00191   * @param  Led: Specifies the Led to be configured. 
00192   *   This parameter can be one of following parameters:
00193   *     @arg LED3
00194   *     @arg LED4
00195   */
00196 void BSP_LED_Init(Led_TypeDef Led)
00197 {
00198   GPIO_InitTypeDef  GPIO_InitStruct;
00199   
00200   /* Enable the GPIO_LED Clock */
00201   LEDx_GPIO_CLK_ENABLE(Led);
00202 
00203   /* Configure the GPIO_LED pin */
00204   GPIO_InitStruct.Pin = GPIO_PIN[Led];
00205   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
00206   GPIO_InitStruct.Pull = GPIO_PULLUP;
00207   GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
00208   
00209   HAL_GPIO_Init(GPIO_PORT[Led], &GPIO_InitStruct);
00210   
00211   HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_RESET); 
00212 }
00213 
00214 /**
00215   * @brief  Turns selected LED On.
00216   * @param  Led: Specifies the Led to be set on. 
00217   *   This parameter can be one of following parameters:
00218   *     @arg LED3
00219   *     @arg LED4 
00220   */
00221 void BSP_LED_On(Led_TypeDef Led)
00222 {
00223   HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_SET); 
00224 }
00225 
00226 /**
00227   * @brief  Turns selected LED Off.
00228   * @param  Led: Specifies the Led to be set off. 
00229   *   This parameter can be one of following parameters:
00230   *     @arg LED3
00231   *     @arg LED4
00232   */
00233 void BSP_LED_Off(Led_TypeDef Led)
00234 {
00235   HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_RESET); 
00236 }
00237 
00238 /**
00239   * @brief  Toggles the selected LED.
00240   * @param  Led: Specifies the Led to be toggled. 
00241   *   This parameter can be one of following parameters:
00242   *     @arg LED3
00243   *     @arg LED4  
00244   */
00245 void BSP_LED_Toggle(Led_TypeDef Led)
00246 {
00247   HAL_GPIO_TogglePin(GPIO_PORT[Led], GPIO_PIN[Led]);
00248 }
00249 
00250 /**
00251   * @brief  Configures Button GPIO and EXTI Line.
00252   * @param  Button: Specifies the Button to be configured.
00253   *   This parameter should be: BUTTON_KEY
00254   * @param  ButtonMode: Specifies Button mode.
00255   *   This parameter can be one of following parameters:   
00256   *     @arg BUTTON_MODE_GPIO: Button will be used as simple IO 
00257   *     @arg BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt
00258   *                            generation capability  
00259   */
00260 void BSP_PB_Init(Button_TypeDef Button, ButtonMode_TypeDef ButtonMode)
00261 {
00262   GPIO_InitTypeDef GPIO_InitStruct;
00263   
00264   /* Enable the BUTTON Clock */
00265   BUTTONx_GPIO_CLK_ENABLE(Button);
00266   
00267   if (ButtonMode == BUTTON_MODE_GPIO)
00268   {
00269     /* Configure Button pin as input */
00270     GPIO_InitStruct.Pin = BUTTON_PIN[Button];
00271     GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
00272     GPIO_InitStruct.Pull = GPIO_PULLDOWN;
00273     GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
00274     HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStruct);
00275   }
00276   
00277   if (ButtonMode == BUTTON_MODE_EXTI)
00278   {
00279     /* Configure Button pin as input with External interrupt */
00280     GPIO_InitStruct.Pin = BUTTON_PIN[Button];
00281     GPIO_InitStruct.Pull = GPIO_NOPULL;
00282     GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING; 
00283     HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStruct);
00284     
00285     /* Enable and set Button EXTI Interrupt to the lowest priority */
00286     HAL_NVIC_SetPriority((IRQn_Type)(BUTTON_IRQn[Button]), 0x0F, 0x00);
00287     HAL_NVIC_EnableIRQ((IRQn_Type)(BUTTON_IRQn[Button]));
00288   }
00289 }
00290 
00291 /**
00292   * @brief  Returns the selected Button state.
00293   * @param  Button: Specifies the Button to be checked.
00294   *   This parameter should be: BUTTON_KEY  
00295   * @retval The Button GPIO pin value.
00296   */
00297 uint32_t BSP_PB_GetState(Button_TypeDef Button)
00298 {
00299   return HAL_GPIO_ReadPin(BUTTON_PORT[Button], BUTTON_PIN[Button]);
00300 }
00301 
00302 /*******************************************************************************
00303                             BUS OPERATIONS
00304 *******************************************************************************/
00305 
00306 /******************************* I2C Routines *********************************/
00307 
00308 /**
00309   * @brief  I2Cx MSP Initialization
00310   * @param  hi2c: I2C handle
00311   */
00312 static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c)
00313 {
00314   GPIO_InitTypeDef  GPIO_InitStruct;  
00315 #ifdef EE_M24LR64
00316   static DMA_HandleTypeDef hdma_tx;
00317   static DMA_HandleTypeDef hdma_rx;
00318   
00319   I2C_HandleTypeDef* pI2cHandle;
00320   pI2cHandle = &EEP_I2cHandle;
00321 #endif /* EE_M24LR64 */
00322 
00323   if (hi2c->Instance == DISCOVERY_I2Cx)
00324   {
00325     /* Configure the GPIOs ---------------------------------------------------*/ 
00326     /* Enable GPIO clock */
00327     DISCOVERY_I2Cx_SDA_GPIO_CLK_ENABLE();
00328     DISCOVERY_I2Cx_SCL_GPIO_CLK_ENABLE();
00329       
00330     /* Configure I2C Tx as alternate function  */
00331     GPIO_InitStruct.Pin       = DISCOVERY_I2Cx_SCL_PIN;
00332     GPIO_InitStruct.Mode      = GPIO_MODE_AF_OD;
00333     GPIO_InitStruct.Pull      = GPIO_NOPULL;
00334     GPIO_InitStruct.Speed     = GPIO_SPEED_FAST;
00335     GPIO_InitStruct.Alternate = DISCOVERY_I2Cx_SCL_SDA_AF;
00336     HAL_GPIO_Init(DISCOVERY_I2Cx_SCL_GPIO_PORT, &GPIO_InitStruct);
00337       
00338     /* Configure I2C Rx as alternate function  */
00339     GPIO_InitStruct.Pin = DISCOVERY_I2Cx_SDA_PIN;
00340     HAL_GPIO_Init(DISCOVERY_I2Cx_SDA_GPIO_PORT, &GPIO_InitStruct);
00341     
00342     
00343     /* Configure the Discovery I2Cx peripheral -------------------------------*/ 
00344     /* Enable I2C3 clock */
00345     DISCOVERY_I2Cx_CLOCK_ENABLE();
00346     
00347     /* Force the I2C Peripheral Clock Reset */  
00348     DISCOVERY_I2Cx_FORCE_RESET();
00349       
00350     /* Release the I2C Peripheral Clock Reset */  
00351     DISCOVERY_I2Cx_RELEASE_RESET(); 
00352     
00353     /* Enable and set Discovery I2Cx Interrupt to the lowest priority */
00354     HAL_NVIC_SetPriority(DISCOVERY_I2Cx_EV_IRQn, 0x0F, 0);
00355     HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_EV_IRQn);
00356     
00357     /* Enable and set Discovery I2Cx Interrupt to the lowest priority */
00358     HAL_NVIC_SetPriority(DISCOVERY_I2Cx_ER_IRQn, 0x0F, 0);
00359     HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_ER_IRQn);  
00360 
00361 #ifdef EE_M24LR64
00362     /* I2C DMA TX and RX channels configuration */
00363     /* Enable the DMA clock */
00364     EEPROM_I2C_DMA_CLK_ENABLE();
00365     
00366     /* Configure the DMA stream for the EE I2C peripheral TX direction */
00367     /* Configure the DMA Stream */
00368     hdma_tx.Instance                  = EEPROM_I2C_DMA_STREAM_TX;
00369     /* Set the parameters to be configured */
00370     hdma_tx.Init.Channel              = EEPROM_I2C_DMA_CHANNEL;  
00371     hdma_tx.Init.Direction            = DMA_MEMORY_TO_PERIPH;
00372     hdma_tx.Init.PeriphInc            = DMA_PINC_DISABLE;
00373     hdma_tx.Init.MemInc               = DMA_MINC_ENABLE;
00374     hdma_tx.Init.PeriphDataAlignment  = DMA_PDATAALIGN_BYTE;
00375     hdma_tx.Init.MemDataAlignment     = DMA_MDATAALIGN_BYTE;
00376     hdma_tx.Init.Mode                 = DMA_NORMAL;
00377     hdma_tx.Init.Priority             = DMA_PRIORITY_VERY_HIGH;
00378     hdma_tx.Init.FIFOMode             = DMA_FIFOMODE_ENABLE;         
00379     hdma_tx.Init.FIFOThreshold        = DMA_FIFO_THRESHOLD_FULL;
00380     hdma_tx.Init.MemBurst             = DMA_MBURST_SINGLE;
00381     hdma_tx.Init.PeriphBurst          = DMA_PBURST_SINGLE; 
00382 
00383     /* Associate the initilalized hdma_tx handle to the the pI2cHandle handle */
00384     __HAL_LINKDMA(pI2cHandle, hdmatx, hdma_tx);
00385     
00386     /* Configure the DMA Stream */
00387     HAL_DMA_Init(&hdma_tx);
00388     
00389     // Added for mbed
00390     /* Configure and enable I2C DMA TX Channel interrupt */
00391     //HAL_NVIC_SetPriority((IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn), EEPROM_I2C_DMA_PREPRIO, 0);
00392     //HAL_NVIC_EnableIRQ((IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn));
00393     // Enable interrupt
00394     IRQn_Type irqn = (IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn);
00395     NVIC_ClearPendingIRQ(irqn);
00396     NVIC_DisableIRQ(irqn);
00397     NVIC_SetPriority(irqn, EEPROM_I2C_DMA_PREPRIO);
00398     NVIC_SetVector(irqn, (uint32_t)EEPROM_I2C_DMA_TX_IRQHandler);
00399     NVIC_EnableIRQ(irqn);
00400     
00401     /* Configure the DMA stream for the EE I2C peripheral TX direction */
00402     /* Configure the DMA Stream */
00403     hdma_rx.Instance                  = EEPROM_I2C_DMA_STREAM_RX;
00404     /* Set the parameters to be configured */
00405     hdma_rx.Init.Channel              = EEPROM_I2C_DMA_CHANNEL;  
00406     hdma_rx.Init.Direction            = DMA_PERIPH_TO_MEMORY;
00407     hdma_rx.Init.PeriphInc            = DMA_PINC_DISABLE;
00408     hdma_rx.Init.MemInc               = DMA_MINC_ENABLE;
00409     hdma_rx.Init.PeriphDataAlignment  = DMA_PDATAALIGN_BYTE;
00410     hdma_rx.Init.MemDataAlignment     = DMA_MDATAALIGN_BYTE;
00411     hdma_rx.Init.Mode                 = DMA_NORMAL;
00412     hdma_rx.Init.Priority             = DMA_PRIORITY_VERY_HIGH;
00413     hdma_rx.Init.FIFOMode             = DMA_FIFOMODE_ENABLE;         
00414     hdma_rx.Init.FIFOThreshold        = DMA_FIFO_THRESHOLD_FULL;
00415     hdma_rx.Init.MemBurst             = DMA_MBURST_SINGLE;
00416     hdma_rx.Init.PeriphBurst          = DMA_PBURST_SINGLE; 
00417 
00418     /* Associate the initilalized hdma_rx handle to the the pI2cHandle handle*/
00419     __HAL_LINKDMA(pI2cHandle, hdmarx, hdma_rx);
00420     
00421     /* Configure the DMA Stream */
00422     HAL_DMA_Init(&hdma_rx);
00423     
00424     // Added for mbed
00425     /* Configure and enable I2C DMA RX Channel interrupt */
00426     //HAL_NVIC_SetPriority((IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn), EEPROM_I2C_DMA_PREPRIO, 0);
00427     //HAL_NVIC_EnableIRQ((IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn));
00428     // Enable interrupt
00429     irqn = (IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn);
00430     NVIC_ClearPendingIRQ(irqn);
00431     NVIC_DisableIRQ(irqn);
00432     NVIC_SetPriority(irqn, EEPROM_I2C_DMA_PREPRIO);
00433     NVIC_SetVector(irqn, (uint32_t)EEPROM_I2C_DMA_RX_IRQHandler);
00434     NVIC_EnableIRQ(irqn);
00435 
00436 #endif /* EE_M24LR64 */
00437   }
00438 }
00439 
00440 /**
00441   * @brief  I2Cx Bus initialization.
00442   */
00443 static void I2Cx_Init(void)
00444 {
00445   if(HAL_I2C_GetState(&EEP_I2cHandle) == HAL_I2C_STATE_RESET)
00446   {
00447     EEP_I2cHandle.Instance              = DISCOVERY_I2Cx;
00448     EEP_I2cHandle.Init.ClockSpeed       = BSP_I2C_SPEED;
00449     EEP_I2cHandle.Init.DutyCycle        = I2C_DUTYCYCLE_2;
00450     EEP_I2cHandle.Init.OwnAddress1      = 0;
00451     EEP_I2cHandle.Init.AddressingMode   = I2C_ADDRESSINGMODE_7BIT;
00452     EEP_I2cHandle.Init.DualAddressMode  = I2C_DUALADDRESS_DISABLED;
00453     EEP_I2cHandle.Init.OwnAddress2      = 0;
00454     EEP_I2cHandle.Init.GeneralCallMode  = I2C_GENERALCALL_DISABLED;
00455     EEP_I2cHandle.Init.NoStretchMode    = I2C_NOSTRETCH_DISABLED;  
00456     
00457     /* Init the I2C */
00458     I2Cx_MspInit(&EEP_I2cHandle);
00459     HAL_I2C_Init(&EEP_I2cHandle);
00460   }
00461 }
00462 
00463 /**
00464   * @brief  Configures Interruption pin for I2C communication.
00465   */
00466 static void I2Cx_ITConfig(void)
00467 {
00468   GPIO_InitTypeDef  GPIO_InitStruct;
00469     
00470   /* Enable the GPIO EXTI Clock */
00471   STMPE811_INT_CLK_ENABLE();
00472   
00473   GPIO_InitStruct.Pin   = STMPE811_INT_PIN;
00474   GPIO_InitStruct.Pull  = GPIO_PULLUP;
00475   GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
00476   GPIO_InitStruct.Mode  = GPIO_MODE_IT_FALLING;
00477   HAL_GPIO_Init(STMPE811_INT_GPIO_PORT, &GPIO_InitStruct);
00478     
00479   /* Enable and set GPIO EXTI Interrupt to the highest priority */
00480   HAL_NVIC_SetPriority((IRQn_Type)(STMPE811_INT_EXTI), 0x0F, 0x00);
00481   HAL_NVIC_EnableIRQ((IRQn_Type)(STMPE811_INT_EXTI));
00482 }
00483 
00484 /**
00485   * @brief  Writes a value in a register of the device through BUS.
00486   * @param  Addr: Device address on BUS Bus.  
00487   * @param  Reg: The target register address to write
00488   * @param  Value: The target register value to be written 
00489   */
00490 static void I2Cx_WriteData(uint8_t Addr, uint8_t Reg, uint8_t Value)
00491   {
00492   HAL_StatusTypeDef status = HAL_OK;
00493   
00494   status = HAL_I2C_Mem_Write(&EEP_I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, &Value, 1, 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  Writes a value in 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   * @param  pBuffer: The target register value to be written 
00509   * @param  Length: buffer size to be written
00510   */
00511 static void I2Cx_WriteBuffer(uint8_t Addr, uint8_t Reg,  uint8_t *pBuffer, uint16_t Length)
00512   {
00513   HAL_StatusTypeDef status = HAL_OK;
00514   
00515   status = HAL_I2C_Mem_Write(&EEP_I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, pBuffer, Length, I2cxTimeout); 
00516 
00517   /* Check the communication status */
00518   if(status != HAL_OK)
00519   {
00520     /* Re-Initialize the BUS */
00521     I2Cx_Error();
00522   }        
00523 }
00524 
00525 /**
00526   * @brief  Reads a register of the device through BUS.
00527   * @param  Addr: Device address on BUS Bus.  
00528   * @param  Reg: The target register address to write
00529   * @retval Data read at register address
00530   */
00531 static uint8_t I2Cx_ReadData(uint8_t Addr, uint8_t Reg)
00532 {
00533   HAL_StatusTypeDef status = HAL_OK;
00534   uint8_t value = 0;
00535   
00536   status = HAL_I2C_Mem_Read(&EEP_I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_8BIT, &value, 1, I2cxTimeout);
00537  
00538   /* Check the communication status */
00539   if(status != HAL_OK)
00540   {
00541     /* Re-Initialize the BUS */
00542     I2Cx_Error();
00543   
00544   }
00545   return value;
00546 }
00547 
00548 /**
00549   * @brief  Reads multiple data on the BUS.
00550   * @param  Addr: I2C Address
00551   * @param  Reg: Reg Address 
00552   * @param  pBuffer: pointer to read data buffer
00553   * @param  Length: length of the data
00554   * @retval 0 if no problems to read multiple data
00555   */
00556 static uint8_t I2Cx_ReadBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length)
00557 {
00558   HAL_StatusTypeDef status = HAL_OK;
00559 
00560   status = HAL_I2C_Mem_Read(&EEP_I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, pBuffer, Length, I2cxTimeout);
00561   
00562   /* Check the communication status */
00563   if(status == HAL_OK)
00564   {
00565     return 0;
00566   }
00567   else
00568   {
00569     /* Re-Initialize the BUS */
00570     I2Cx_Error();
00571 
00572     return 1;
00573   }
00574 }
00575 
00576 #ifdef EE_M24LR64
00577 /**
00578   * @brief  Writes a value in a register of the device through BUS in using DMA mode.
00579   * @param  Addr: Device address on BUS Bus.  
00580   * @param  Reg: The target register address to write
00581   * @param  pBuffer: The target register value to be written 
00582   * @param  Length: buffer size to be written
00583   * @retval HAL status
00584   */
00585 static HAL_StatusTypeDef I2Cx_WriteBufferDMA(uint8_t Addr, uint16_t Reg,  uint8_t *pBuffer, uint16_t Length)
00586   {
00587   HAL_StatusTypeDef status = HAL_OK;
00588   
00589   status = HAL_I2C_Mem_Write_DMA(&EEP_I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_16BIT, pBuffer, Length);
00590 
00591   /* Check the communication status */
00592   if(status != HAL_OK)
00593   {
00594     /* Re-Initialize the BUS */
00595     I2Cx_Error();
00596   }
00597 
00598   return status;
00599 }
00600 
00601 /**
00602   * @brief  Reads multiple data on the BUS in using DMA mode.
00603   * @param  Addr: I2C Address
00604   * @param  Reg: Reg Address 
00605   * @param  pBuffer: pointer to read data buffer
00606   * @param  Length: length of the data
00607   * @retval HAL status
00608   */
00609 static HAL_StatusTypeDef I2Cx_ReadBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length)
00610 {
00611   HAL_StatusTypeDef status = HAL_OK;
00612 
00613   status = HAL_I2C_Mem_Read_DMA(&EEP_I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_16BIT, pBuffer, Length);
00614   
00615   /* Check the communication status */
00616   if(status != HAL_OK)
00617   {
00618     /* Re-Initialize the BUS */
00619     I2Cx_Error();
00620   }
00621   
00622   return status;
00623 }
00624 
00625 /**
00626 * @brief  Checks if target device is ready for communication. 
00627 * @note   This function is used with Memory devices
00628 * @param  DevAddress: Target device address
00629 * @param  Trials: Number of trials
00630 * @retval HAL status
00631 */
00632 static HAL_StatusTypeDef I2Cx_IsDeviceReady(uint16_t DevAddress, uint32_t Trials)
00633 { 
00634   return (HAL_I2C_IsDeviceReady(&EEP_I2cHandle, DevAddress, Trials, I2cxTimeout));
00635 }
00636 #endif /* EE_M24LR64 */
00637 
00638 /**
00639   * @brief  I2Cx error treatment function
00640   */
00641 static void I2Cx_Error(void)
00642 {
00643   /* De-initialize the I2C communication BUS */
00644   HAL_I2C_DeInit(&EEP_I2cHandle);
00645   
00646   /* Re-Initialize the I2C communication BUS */
00647   I2Cx_Init();
00648 }
00649 
00650 /******************************* SPI Routines *********************************/
00651 
00652 /**
00653   * @brief  SPIx Bus initialization
00654   */
00655 static void SPIx_Init(void)
00656 {
00657   if(HAL_SPI_GetState(&SpiHandle) == HAL_SPI_STATE_RESET)
00658   {
00659     /* SPI configuration -----------------------------------------------------*/
00660     SpiHandle.Instance = DISCOVERY_SPIx;
00661     /* SPI baudrate is set to 5.6 MHz (PCLK2/SPI_BaudRatePrescaler = 90/16 = 5.625 MHz) 
00662        to verify these constraints:
00663        - ILI9341 LCD SPI interface max baudrate is 10MHz for write and 6.66MHz for read
00664        - l3gd20 SPI interface max baudrate is 10MHz for write/read
00665        - PCLK2 frequency is set to 90 MHz 
00666     */  
00667     SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
00668 
00669     /* On STM32F429I-Discovery, LCD ID cannot be read then keep a common configuration */
00670     /* for LCD and GYRO (SPI_DIRECTION_2LINES) */
00671     /* Note: To read a register a LCD, SPI_DIRECTION_1LINE should be set */
00672     SpiHandle.Init.Direction      = SPI_DIRECTION_2LINES;
00673     SpiHandle.Init.CLKPhase       = SPI_PHASE_1EDGE;
00674     SpiHandle.Init.CLKPolarity    = SPI_POLARITY_LOW;
00675     SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
00676     SpiHandle.Init.CRCPolynomial  = 7;
00677     SpiHandle.Init.DataSize       = SPI_DATASIZE_8BIT;
00678     SpiHandle.Init.FirstBit       = SPI_FIRSTBIT_MSB;
00679     SpiHandle.Init.NSS            = SPI_NSS_SOFT;
00680     SpiHandle.Init.TIMode         = SPI_TIMODE_DISABLED;
00681     SpiHandle.Init.Mode           = SPI_MODE_MASTER;
00682   
00683     SPIx_MspInit(&SpiHandle);
00684     HAL_SPI_Init(&SpiHandle);
00685   } 
00686 }
00687 
00688 /**
00689   * @brief  Reads 4 bytes from device.
00690   * @param  ReadSize: Number of bytes to read (max 4 bytes)
00691   * @retval Value read on the SPI
00692   */
00693 static uint32_t SPIx_Read(uint8_t ReadSize)
00694 {
00695   HAL_StatusTypeDef status = HAL_OK;
00696   uint32_t readvalue;
00697   
00698   status = HAL_SPI_Receive(&SpiHandle, (uint8_t*) &readvalue, ReadSize, SpixTimeout);
00699   
00700   /* Check the communication status */
00701   if(status != HAL_OK)
00702   {
00703     /* Re-Initialize the BUS */
00704     SPIx_Error();
00705   }
00706   
00707   return readvalue;
00708 }
00709 
00710 /**
00711   * @brief  Writes a byte to device.
00712   * @param  Value: value to be written
00713   */
00714 static void SPIx_Write(uint16_t Value)
00715 {
00716   HAL_StatusTypeDef status = HAL_OK;
00717   
00718   status = HAL_SPI_Transmit(&SpiHandle, (uint8_t*) &Value, 1, SpixTimeout);
00719   
00720   /* Check the communication status */
00721   if(status != HAL_OK)
00722   {
00723     /* Re-Initialize the BUS */
00724     SPIx_Error();
00725   }
00726 }
00727 
00728 /**
00729   * @brief  Sends a Byte through the SPI interface and return the Byte received 
00730   *         from the SPI bus.
00731   * @param  Byte: Byte send.
00732   * @retval The received byte value
00733   */
00734 static uint8_t SPIx_WriteRead(uint8_t Byte)
00735 {
00736   uint8_t receivedbyte = 0;
00737   
00738   /* Send a Byte through the SPI peripheral */
00739   /* Read byte from the SPI bus */
00740   if(HAL_SPI_TransmitReceive(&SpiHandle, (uint8_t*) &Byte, (uint8_t*) &receivedbyte, 1, SpixTimeout) != HAL_OK)
00741   {
00742     SPIx_Error();
00743   }
00744   
00745   return receivedbyte;
00746 }
00747 
00748 /**
00749   * @brief  SPIx error treatment function.
00750   */
00751 static void SPIx_Error(void)
00752 {
00753   /* De-initialize the SPI communication BUS */
00754   HAL_SPI_DeInit(&SpiHandle);
00755   
00756   /* Re- Initialize the SPI communication BUS */
00757   SPIx_Init();
00758 }
00759 
00760 /**
00761   * @brief  SPI MSP Init.
00762   * @param  hspi: SPI handle
00763   */
00764 static void SPIx_MspInit(SPI_HandleTypeDef *hspi)
00765 {
00766   GPIO_InitTypeDef   GPIO_InitStructure;
00767 
00768   /* Enable SPIx clock */
00769   DISCOVERY_SPIx_CLK_ENABLE();
00770 
00771   /* Enable DISCOVERY_SPI GPIO clock */
00772   DISCOVERY_SPIx_GPIO_CLK_ENABLE();
00773 
00774   /* configure SPI SCK, MOSI and MISO */    
00775   GPIO_InitStructure.Pin    = (DISCOVERY_SPIx_SCK_PIN | DISCOVERY_SPIx_MOSI_PIN | DISCOVERY_SPIx_MISO_PIN);
00776   GPIO_InitStructure.Mode   = GPIO_MODE_AF_PP;
00777   GPIO_InitStructure.Pull   = GPIO_PULLDOWN;
00778   GPIO_InitStructure.Speed  = GPIO_SPEED_MEDIUM;
00779   GPIO_InitStructure.Alternate = DISCOVERY_SPIx_AF;
00780   HAL_GPIO_Init(DISCOVERY_SPIx_GPIO_PORT, &GPIO_InitStructure);      
00781 }
00782 
00783 /********************************* LINK LCD ***********************************/
00784 
00785 /**
00786   * @brief  Configures the LCD_SPI interface.
00787   */
00788 void LCD_IO_Init(void)
00789 {
00790   GPIO_InitTypeDef GPIO_InitStructure;
00791   
00792   if(Is_LCD_IO_Initialized == 0)
00793   {
00794     Is_LCD_IO_Initialized = 1; 
00795     
00796     /* Configure NCS in Output Push-Pull mode */
00797     LCD_WRX_GPIO_CLK_ENABLE();
00798     GPIO_InitStructure.Pin     = LCD_WRX_PIN;
00799     GPIO_InitStructure.Mode    = GPIO_MODE_OUTPUT_PP;
00800     GPIO_InitStructure.Pull    = GPIO_NOPULL;
00801     GPIO_InitStructure.Speed   = GPIO_SPEED_FAST;
00802     HAL_GPIO_Init(LCD_WRX_GPIO_PORT, &GPIO_InitStructure);
00803     
00804     LCD_RDX_GPIO_CLK_ENABLE();
00805     GPIO_InitStructure.Pin     = LCD_RDX_PIN;
00806     GPIO_InitStructure.Mode    = GPIO_MODE_OUTPUT_PP;
00807     GPIO_InitStructure.Pull    = GPIO_NOPULL;
00808     GPIO_InitStructure.Speed   = GPIO_SPEED_FAST;
00809     HAL_GPIO_Init(LCD_RDX_GPIO_PORT, &GPIO_InitStructure);
00810     
00811     /* Configure the LCD Control pins ----------------------------------------*/
00812     LCD_NCS_GPIO_CLK_ENABLE();
00813     
00814     /* Configure NCS in Output Push-Pull mode */
00815     GPIO_InitStructure.Pin     = LCD_NCS_PIN;
00816     GPIO_InitStructure.Mode    = GPIO_MODE_OUTPUT_PP;
00817     GPIO_InitStructure.Pull    = GPIO_NOPULL;
00818     GPIO_InitStructure.Speed   = GPIO_SPEED_FAST;
00819     HAL_GPIO_Init(LCD_NCS_GPIO_PORT, &GPIO_InitStructure);
00820     
00821     /* Set or Reset the control line */
00822     LCD_CS_LOW();
00823     LCD_CS_HIGH();
00824     
00825     SPIx_Init();
00826   }
00827 }
00828 
00829 /**
00830   * @brief  Writes register value.
00831   */
00832 void LCD_IO_WriteData(uint16_t RegValue) 
00833 {
00834   /* Set WRX to send data */
00835   LCD_WRX_HIGH();
00836   
00837   /* Reset LCD control line(/CS) and Send data */  
00838   LCD_CS_LOW();
00839   SPIx_Write(RegValue);
00840   
00841   /* Deselect: Chip Select high */
00842   LCD_CS_HIGH();
00843 }
00844 
00845 /**
00846   * @brief  Writes register address.
00847   */
00848 void LCD_IO_WriteReg(uint8_t Reg) 
00849 {
00850   /* Reset WRX to send command */
00851   LCD_WRX_LOW();
00852   
00853   /* Reset LCD control line(/CS) and Send command */
00854   LCD_CS_LOW();
00855   SPIx_Write(Reg);
00856   
00857   /* Deselect: Chip Select high */
00858   LCD_CS_HIGH();
00859 }
00860 
00861 /**
00862   * @brief  Reads register value.
00863   * @param  RegValue Address of the register to read
00864   * @param  ReadSize Number of bytes to read
00865   * @retval Content of the register value
00866   */
00867 uint32_t LCD_IO_ReadData(uint16_t RegValue, uint8_t ReadSize) 
00868 {
00869   uint32_t readvalue = 0;
00870 
00871   /* Select: Chip Select low */
00872   LCD_CS_LOW();
00873 
00874   /* Reset WRX to send command */
00875   LCD_WRX_LOW();
00876   
00877   SPIx_Write(RegValue);
00878   
00879   readvalue = SPIx_Read(ReadSize);
00880 
00881   /* Set WRX to send data */
00882   LCD_WRX_HIGH();
00883 
00884   /* Deselect: Chip Select high */
00885   LCD_CS_HIGH();
00886   
00887   return readvalue;
00888 }
00889 
00890 /**
00891   * @brief  Wait for loop in ms.
00892   * @param  Delay in ms.
00893   */
00894 void LCD_Delay(uint32_t Delay)
00895 {
00896   //HAL_Delay(Delay);
00897   wait_ms(Delay);
00898 }
00899 
00900 /*******************************************************************************
00901                             LINK OPERATIONS
00902 *******************************************************************************/
00903 
00904 /********************************* LINK IOE ***********************************/
00905 
00906 /**
00907   * @brief  IOE Low Level Initialization.
00908   */
00909 void IOE_Init(void) 
00910 {
00911   I2Cx_Init();
00912 }
00913 
00914 /**
00915   * @brief  IOE Low Level Interrupt configuration.
00916   */
00917 void IOE_ITConfig(void)
00918 {
00919   I2Cx_ITConfig();
00920 }
00921 
00922 /**
00923   * @brief  IOE Writes single data operation.
00924   * @param  Addr: I2C Address
00925   * @param  Reg: Reg Address 
00926   * @param  Value: Data to be written
00927   */
00928 void IOE_Write(uint8_t Addr, uint8_t Reg, uint8_t Value)
00929 {
00930   I2Cx_WriteData(Addr, Reg, Value);
00931 }
00932 
00933 /**
00934   * @brief  IOE Reads single data.
00935   * @param  Addr: I2C Address
00936   * @param  Reg: Reg Address 
00937   * @retval The read data
00938   */
00939 uint8_t IOE_Read(uint8_t Addr, uint8_t Reg)
00940 {
00941   return I2Cx_ReadData(Addr, Reg);
00942 }
00943 
00944 /**
00945   * @brief  IOE Writes multiple data.
00946   * @param  Addr: I2C Address
00947   * @param  Reg: Reg Address 
00948   * @param  pBuffer: pointer to data buffer
00949   * @param  Length: length of the data
00950   */
00951 void IOE_WriteMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length)
00952 {
00953   I2Cx_WriteBuffer(Addr, Reg, pBuffer, Length);
00954 }
00955 
00956 /**
00957   * @brief  IOE Reads multiple data.
00958   * @param  Addr: I2C Address
00959   * @param  Reg: Reg Address 
00960   * @param  pBuffer: pointer to data buffer
00961   * @param  Length: length of the data
00962   * @retval 0 if no problems to read multiple data
00963   */
00964 uint16_t IOE_ReadMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length)
00965 {
00966  return I2Cx_ReadBuffer(Addr, Reg, pBuffer, Length);
00967 }
00968 
00969 /**
00970   * @brief  IOE Delay.
00971   * @param  Delay in ms
00972   */
00973 void IOE_Delay(uint32_t Delay)
00974 {
00975   //HAL_Delay(Delay);
00976   wait_ms(Delay);
00977 }
00978 
00979 /********************************* LINK GYROSCOPE *****************************/
00980 
00981 /**
00982   * @brief  Configures the Gyroscope SPI interface.
00983   */
00984 void GYRO_IO_Init(void)
00985 {
00986   GPIO_InitTypeDef GPIO_InitStructure;
00987   
00988   /* Configure the Gyroscope Control pins ------------------------------------*/
00989   /* Enable CS GPIO clock and Configure GPIO PIN for Gyroscope Chip select */  
00990   GYRO_CS_GPIO_CLK_ENABLE();  
00991   GPIO_InitStructure.Pin = GYRO_CS_PIN;
00992   GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
00993   GPIO_InitStructure.Pull  = GPIO_NOPULL;
00994   GPIO_InitStructure.Speed = GPIO_SPEED_MEDIUM;
00995   HAL_GPIO_Init(GYRO_CS_GPIO_PORT, &GPIO_InitStructure);
00996   
00997   /* Deselect: Chip Select high */
00998   GYRO_CS_HIGH();
00999   
01000   /* Enable INT1, INT2 GPIO clock and Configure GPIO PINs to detect Interrupts */
01001   GYRO_INT_GPIO_CLK_ENABLE();
01002   GPIO_InitStructure.Pin = GYRO_INT1_PIN | GYRO_INT2_PIN;
01003   GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
01004   GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
01005   GPIO_InitStructure.Pull= GPIO_NOPULL;
01006   HAL_GPIO_Init(GYRO_INT_GPIO_PORT, &GPIO_InitStructure);
01007 
01008   SPIx_Init();
01009 }
01010 
01011 /**
01012   * @brief  Writes one byte to the Gyroscope.
01013   * @param  pBuffer: Pointer to the buffer containing the data to be written to the Gyroscope.
01014   * @param  WriteAddr: Gyroscope's internal address to write to.
01015   * @param  NumByteToWrite: Number of bytes to write.
01016   */
01017 void GYRO_IO_Write(uint8_t* pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite)
01018 {
01019   /* Configure the MS bit: 
01020        - When 0, the address will remain unchanged in multiple read/write commands.
01021        - When 1, the address will be auto incremented in multiple read/write commands.
01022   */
01023   if(NumByteToWrite > 0x01)
01024   {
01025     WriteAddr |= (uint8_t)MULTIPLEBYTE_CMD;
01026   }
01027   /* Set chip select Low at the start of the transmission */
01028   GYRO_CS_LOW();
01029   
01030   /* Send the Address of the indexed register */
01031   SPIx_WriteRead(WriteAddr);
01032   
01033   /* Send the data that will be written into the device (MSB First) */
01034   while(NumByteToWrite >= 0x01)
01035   {
01036     SPIx_WriteRead(*pBuffer);
01037     NumByteToWrite--;
01038     pBuffer++;
01039   }
01040   
01041   /* Set chip select High at the end of the transmission */ 
01042   GYRO_CS_HIGH();
01043 }
01044 
01045 /**
01046   * @brief  Reads a block of data from the Gyroscope.
01047   * @param  pBuffer: Pointer to the buffer that receives the data read from the Gyroscope.
01048   * @param  ReadAddr: Gyroscope's internal address to read from.
01049   * @param  NumByteToRead: Number of bytes to read from the Gyroscope.
01050   */
01051 void GYRO_IO_Read(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead)
01052 {  
01053   if(NumByteToRead > 0x01)
01054   {
01055     ReadAddr |= (uint8_t)(READWRITE_CMD | MULTIPLEBYTE_CMD);
01056   }
01057   else
01058   {
01059     ReadAddr |= (uint8_t)READWRITE_CMD;
01060   }
01061   /* Set chip select Low at the start of the transmission */
01062   GYRO_CS_LOW();
01063   
01064   /* Send the Address of the indexed register */
01065   SPIx_WriteRead(ReadAddr);
01066   
01067   /* Receive the data that will be read from the device (MSB First) */
01068   while(NumByteToRead > 0x00)
01069   {
01070     /* Send dummy byte (0x00) to generate the SPI clock to Gyroscope (Slave device) */
01071     *pBuffer = SPIx_WriteRead(DUMMY_BYTE);
01072     NumByteToRead--;
01073     pBuffer++;
01074   }
01075   
01076   /* Set chip select High at the end of the transmission */ 
01077   GYRO_CS_HIGH();
01078 }  
01079 
01080 
01081 #ifdef EE_M24LR64
01082 
01083 /******************************** LINK I2C EEPROM *****************************/
01084 
01085 /**
01086   * @brief  Initializes peripherals used by the I2C EEPROM driver.
01087   */
01088 void EEPROM_IO_Init(void)
01089 {
01090   I2Cx_Init();
01091 }
01092 
01093 /**
01094   * @brief  Writes data to I2C EEPROM driver in using DMA channel.
01095   * @param  DevAddress: Target device address
01096   * @param  MemAddress: Internal memory address
01097   * @param  pBuffer: Pointer to data buffer
01098   * @param  BufferSize: Amount of data to be sent
01099   * @retval HAL status
01100   */
01101 HAL_StatusTypeDef EEPROM_IO_WriteData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize)
01102 {
01103   return (I2Cx_WriteBufferDMA(DevAddress, MemAddress,  pBuffer, BufferSize));
01104 }
01105 
01106 /**
01107   * @brief  Reads data from I2C EEPROM driver in using DMA channel.
01108   * @param  DevAddress: Target device address
01109   * @param  MemAddress: Internal memory address
01110   * @param  pBuffer: Pointer to data buffer
01111   * @param  BufferSize: Amount of data to be read
01112   * @retval HAL status
01113   */
01114 HAL_StatusTypeDef EEPROM_IO_ReadData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize)
01115 {
01116   return (I2Cx_ReadBufferDMA(DevAddress, MemAddress, pBuffer, BufferSize));
01117 }
01118 
01119 /**
01120 * @brief  Checks if target device is ready for communication. 
01121 * @note   This function is used with Memory devices
01122 * @param  DevAddress: Target device address
01123 * @param  Trials: Number of trials
01124 * @retval HAL status
01125 */
01126 HAL_StatusTypeDef EEPROM_IO_IsDeviceReady(uint16_t DevAddress, uint32_t Trials)
01127 { 
01128   return (I2Cx_IsDeviceReady(DevAddress, Trials));
01129 }
01130 
01131 // Added for mbed
01132 /**
01133   * @brief  This function handles sEE DMA TX interrupt request.
01134   * @param  None
01135   * @retval None
01136   */
01137 static void EEPROM_I2C_DMA_TX_IRQHandler(void)
01138 { 
01139   HAL_DMA_IRQHandler(EEP_I2cHandle.hdmatx);
01140 }
01141 
01142 /**
01143   * @brief  This function handles sEE DMA RX interrupt request.
01144   * @param  None
01145   * @retval None
01146   */
01147 static void EEPROM_I2C_DMA_RX_IRQHandler(void)
01148 { 
01149   HAL_DMA_IRQHandler(EEP_I2cHandle.hdmarx);
01150 }
01151 
01152 #endif /* EE_M24LR64 */
01153 
01154 /**
01155   * @}
01156   */ 
01157 
01158 /**
01159   * @}
01160   */ 
01161 
01162 /**
01163   * @}
01164   */   
01165 
01166 /**
01167   * @}
01168   */ 
01169       
01170 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/