ref: 6de80f736dbaff57b01154597dd4776b031ec347
dir: /demos/stm32f429_disco/stm/stm32f429/stm32f429i_discovery.c/
/**
******************************************************************************
* @file stm32f429i_discovery.c
* @author MCD Application Team
* @version V2.0.1
* @date 26-February-2014
* @brief This file provides set of firmware functions to manage Leds and
* push-button available on STM32F429I-DISCO Kit from STMicroelectronics.
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2014 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 "stm32f429i_discovery.h"
/** @addtogroup STM32F429I_DISCOVERY
* @{
*/
/** @defgroup STM32F429I-DISCOVERY_LOW_LEVEL
* @brief This file provides set of firmware functions to manage Leds and push-button
* available on STM32F429I-Discovery Kit from STMicroelectronics.
* @{
*/
/** @defgroup STM32F429I_DISCOVERY LOW_LEVEL_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @defgroup STM32F429I_DISCOVERY LOW_LEVEL_Private_Defines
* @{
*/
/**
* @brief STM32F429I DISCO BSP Driver version number V2.0.1
*/
#define __STM32F429I_DISCO_BSP_VERSION_MAIN (0x02) /*!< [31:24] main version */
#define __STM32F429I_DISCO_BSP_VERSION_SUB1 (0x00) /*!< [23:16] sub1 version */
#define __STM32F429I_DISCO_BSP_VERSION_SUB2 (0x01) /*!< [15:8] sub2 version */
#define __STM32F429I_DISCO_BSP_VERSION_RC (0x00) /*!< [7:0] release candidate */
#define __STM32F429I_DISCO_BSP_VERSION ((__STM32F429I_DISCO_BSP_VERSION_MAIN << 24)\
|(__STM32F429I_DISCO_BSP_VERSION_SUB1 << 16)\
|(__STM32F429I_DISCO_BSP_VERSION_SUB2 << 8 )\
|(__STM32F429I_DISCO_BSP_VERSION_RC))
/**
* @}
*/
/** @defgroup STM32F429I-DISCOVERY LOW_LEVEL_Private_Macros
* @{
*/
/**
* @}
*/
/** @defgroup STM32F429I_DISCOVERY LOW_LEVEL_Private_Variables
* @{
*/
GPIO_TypeDef* GPIO_PORT[LEDn] = {LED3_GPIO_PORT,
LED4_GPIO_PORT};
const uint16_t GPIO_PIN[LEDn] = {LED3_PIN,
LED4_PIN};
GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {KEY_BUTTON_GPIO_PORT};
const uint16_t BUTTON_PIN[BUTTONn] = {KEY_BUTTON_PIN};
const uint8_t BUTTON_IRQn[BUTTONn] = {KEY_BUTTON_EXTI_IRQn};
uint32_t I2cxTimeout = I2Cx_TIMEOUT_MAX; /*<! Value of Timeout when I2C communication fails */
uint32_t SpixTimeout = SPIx_TIMEOUT_MAX; /*<! Value of Timeout when SPI communication fails */
I2C_HandleTypeDef I2cHandle;
static SPI_HandleTypeDef SpiHandle;
/**
* @}
*/
/** @defgroup STM32F429I_DISCOVERY LOW_LEVEL_Private_FunctionPrototypes
* @{
*/
static void I2Cx_Init(void);
static void I2Cx_ITConfig(void);
static void I2Cx_WriteData(uint8_t Addr, uint8_t Reg, uint8_t Value);
static void I2Cx_WriteBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length);
static uint8_t I2Cx_ReadData(uint8_t Addr, uint8_t Reg);
static uint8_t I2Cx_ReadBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length);
static void I2Cx_Error (void);
static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c);
#ifdef EE_M24LR64
static HAL_StatusTypeDef I2Cx_WriteBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length);
static HAL_StatusTypeDef I2Cx_ReadBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length);
static HAL_StatusTypeDef I2Cx_IsDeviceReady(uint16_t DevAddress, uint32_t Trials);
#endif /*EE_M24LR64*/
static void SPIx_Init(void);
static void SPIx_Write(uint16_t Value);
static uint32_t SPIx_Read(uint8_t ReadSize);
static uint8_t SPIx_WriteRead(uint8_t Byte);
static void SPIx_Error (void);
static void SPIx_MspInit(SPI_HandleTypeDef *hspi);
/*Link function for LCD peripheral */
void LCD_IO_Init(void);
void LCD_IO_WriteData(uint16_t RegValue);
void LCD_IO_WriteReg(uint8_t Reg);
uint32_t LCD_IO_ReadData(uint16_t RegValue, uint8_t ReadSize);
void LCD_Delay (uint32_t delay);
/* IOExpander IO functions */
void IOE_Init(void);
void IOE_ITConfig (void);
void IOE_Delay(uint32_t Delay);
void IOE_Write(uint8_t Addr, uint8_t Reg, uint8_t Value);
uint8_t IOE_Read(uint8_t Addr, uint8_t Reg);
uint16_t IOE_ReadMultiple(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length);
void IOE_WriteMultiple (uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length);
/* Link function for GYRO peripheral */
void GYRO_IO_Init(void);
void GYRO_IO_Write(uint8_t* pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite);
void GYRO_IO_Read(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead);
#ifdef EE_M24LR64
/* Link function for I2C EEPROM peripheral */
void EEPROM_IO_Init(void);
HAL_StatusTypeDef EEPROM_IO_WriteData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize);
HAL_StatusTypeDef EEPROM_IO_ReadData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize);
HAL_StatusTypeDef EEPROM_IO_IsDeviceReady(uint16_t DevAddress, uint32_t Trials);
#endif /*EE_M24LR64*/
/**
* @}
*/
/** @defgroup STM32F429I_DISCOVERY LOW_LEVEL_Private_Functions
* @{
*/
/**
* @brief This method returns the STM32F429I DISCO BSP Driver revision
* @param None
* @retval version : 0xXYZR (8bits for each decimal, R for RC)
*/
uint32_t BSP_GetVersion(void)
{
return __STM32F429I_DISCO_BSP_VERSION;
}
/**
* @brief Configures LED GPIO.
* @param Led: Specifies the Led to be configured.
* This parameter can be one of following parameters:
* @arg LED3
* @arg LED4
* @retval None
*/
void BSP_LED_Init(Led_TypeDef Led)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Enable the GPIO_LED Clock */
LEDx_GPIO_CLK_ENABLE(Led);
/* Configure the GPIO_LED pin */
GPIO_InitStruct.Pin = GPIO_PIN[Led];
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(GPIO_PORT[Led], &GPIO_InitStruct);
HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_RESET);
}
/**
* @brief Turns selected LED On.
* @param Led: Specifies the Led to be set on.
* This parameter can be one of following parameters:
* @arg LED3
* @arg LED4
* @retval None
*/
void BSP_LED_On(Led_TypeDef Led)
{
HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_SET);
}
/**
* @brief Turns selected LED Off.
* @param Led: Specifies the Led to be set off.
* This parameter can be one of following parameters:
* @arg LED3
* @arg LED4
* @retval None
*/
void BSP_LED_Off(Led_TypeDef Led)
{
HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_RESET);
}
/**
* @brief Toggles the selected LED.
* @param Led: Specifies the Led to be toggled.
* This parameter can be one of following parameters:
* @arg LED3
* @arg LED4
* @retval None
*/
void BSP_LED_Toggle(Led_TypeDef Led)
{
HAL_GPIO_TogglePin(GPIO_PORT[Led], GPIO_PIN[Led]);
}
/**
* @brief Configures Button GPIO and EXTI Line.
* @param Button: Specifies the Button to be configured.
* This parameter should be: BUTTON_KEY
* @param Button_Mode: Specifies Button mode.
* This parameter can be one of following parameters:
* @arg BUTTON_MODE_GPIO: Button will be used as simple IO
* @arg BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt
* generation capability
* @retval None
*/
void BSP_PB_Init(Button_TypeDef Button, ButtonMode_TypeDef ButtonMode)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Enable the BUTTON Clock */
BUTTONx_GPIO_CLK_ENABLE(Button);
__SYSCFG_CLK_ENABLE();
if (ButtonMode == BUTTON_MODE_GPIO)
{
/* Configure Button pin as input */
GPIO_InitStruct.Pin = BUTTON_PIN[Button];
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStruct);
}
if (ButtonMode == BUTTON_MODE_EXTI)
{
/* Configure Button pin as input with External interrupt */
GPIO_InitStruct.Pin = BUTTON_PIN[Button];
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStruct);
/* Enable and set Button EXTI Interrupt to the lowest priority */
HAL_NVIC_SetPriority((IRQn_Type)(BUTTON_IRQn[Button]), 0x0F, 0x00);
HAL_NVIC_EnableIRQ((IRQn_Type)(BUTTON_IRQn[Button]));
}
}
/**
* @brief Returns the selected Button state.
* @param Button: Specifies the Button to be checked.
* This parameter should be: BUTTON_KEY
* @retval The Button GPIO pin value.
*/
uint32_t BSP_PB_GetState(Button_TypeDef Button)
{
return HAL_GPIO_ReadPin(BUTTON_PORT[Button], BUTTON_PIN[Button]);
}
/******************************************************************************
BUS OPERATIONS
*******************************************************************************/
/******************************* I2C Routines**********************************/
/**
* @brief Discovery I2Cx MSP Initialization
* @param hi2c: I2C handle
* @retval None
*/
static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c)
{
GPIO_InitTypeDef GPIO_InitStruct;
#ifdef EE_M24LR64
static DMA_HandleTypeDef hdma_tx;
static DMA_HandleTypeDef hdma_rx;
I2C_HandleTypeDef* pI2cHandle;
pI2cHandle = &I2cHandle;
#endif /*EE_M24LR64*/
if (hi2c->Instance == DISCOVERY_I2Cx)
{
/*##-1- Configure the GPIOs ################################################*/
/* Enable GPIO clock */
DISCOVERY_I2Cx_SDA_GPIO_CLK_ENABLE();
DISCOVERY_I2Cx_SCL_GPIO_CLK_ENABLE();
/* Configure I2C Tx as alternate function */
GPIO_InitStruct.Pin = DISCOVERY_I2Cx_SCL_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = DISCOVERY_I2Cx_SCL_SDA_AF;
HAL_GPIO_Init(DISCOVERY_I2Cx_SCL_GPIO_PORT, &GPIO_InitStruct);
/* Configure I2C Rx as alternate function */
GPIO_InitStruct.Pin = DISCOVERY_I2Cx_SDA_PIN;
HAL_GPIO_Init(DISCOVERY_I2Cx_SDA_GPIO_PORT, &GPIO_InitStruct);
/*##-2- Configure the Discovery I2Cx peripheral #######################################*/
/* Enable I2C3 clock */
DISCOVERY_I2Cx_CLOCK_ENABLE();
/* Force the I2C Periheral Clock Reset */
DISCOVERY_I2Cx_FORCE_RESET();
/* Release the I2C Periheral Clock Reset */
DISCOVERY_I2Cx_RELEASE_RESET();
/* Enable and set Discovery I2Cx Interrupt to the highest priority */
HAL_NVIC_SetPriority(DISCOVERY_I2Cx_EV_IRQn, 0x00, 0);
HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_EV_IRQn);
/* Enable and set Discovery I2Cx Interrupt to the highest priority */
HAL_NVIC_SetPriority(DISCOVERY_I2Cx_ER_IRQn, 0x00, 0);
HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_ER_IRQn);
#ifdef EE_M24LR64
/*!< I2C DMA TX and RX channels configuration */
/* Enable the DMA clock */
EEPROM_I2C_DMA_CLK_ENABLE();
/* Configure the DMA stream for the EE I2C peripheral TX direction */
/* Configure the DMA Stream */
hdma_tx.Instance = EEPROM_I2C_DMA_STREAM_TX;
/* Set the parameters to be configured */
hdma_tx.Init.Channel = EEPROM_I2C_DMA_CHANNEL;
hdma_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_tx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_tx.Init.MemInc = DMA_MINC_ENABLE;
hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_tx.Init.Mode = DMA_NORMAL;
hdma_tx.Init.Priority = DMA_PRIORITY_VERY_HIGH;
hdma_tx.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
hdma_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
hdma_tx.Init.MemBurst = DMA_MBURST_SINGLE;
hdma_tx.Init.PeriphBurst = DMA_PBURST_SINGLE;
/* Associate the initilalized hdma_rx handle to the the husart handle*/
__HAL_LINKDMA(pI2cHandle, hdmatx, hdma_tx);
/* Configure the DMA Stream */
HAL_DMA_Init(&hdma_tx);
/* Configure and enable I2C DMA TX Channel interrupt */
HAL_NVIC_SetPriority((IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn), EEPROM_I2C_DMA_PREPRIO, 0);
HAL_NVIC_EnableIRQ((IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn));
/* Configure the DMA stream for the EE I2C peripheral TX direction */
/* Configure the DMA Stream */
hdma_rx.Instance = EEPROM_I2C_DMA_STREAM_RX;
/* Set the parameters to be configured */
hdma_rx.Init.Channel = EEPROM_I2C_DMA_CHANNEL;
hdma_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_rx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_rx.Init.MemInc = DMA_MINC_ENABLE;
hdma_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_rx.Init.Mode = DMA_NORMAL;
hdma_rx.Init.Priority = DMA_PRIORITY_VERY_HIGH;
hdma_rx.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
hdma_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
hdma_rx.Init.MemBurst = DMA_MBURST_SINGLE;
hdma_rx.Init.PeriphBurst = DMA_PBURST_SINGLE;
/* Associate the initilalized hdma_rx handle to the the husart handle*/
__HAL_LINKDMA(pI2cHandle, hdmarx, hdma_rx);
/* Configure the DMA Stream */
HAL_DMA_Init(&hdma_rx);
/* Configure and enable I2C DMA RX Channel interrupt */
HAL_NVIC_SetPriority((IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn), EEPROM_I2C_DMA_PREPRIO, 0);
HAL_NVIC_EnableIRQ((IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn));
#endif /*EE_M24LR64*/
}
}
/**
* @brief Discovery I2Cx Bus initialization
* @param None
* @retval None
*/
static void I2Cx_Init(void)
{
if(HAL_I2C_GetState(&I2cHandle) == HAL_I2C_STATE_RESET)
{
I2cHandle.Instance = DISCOVERY_I2Cx;
I2cHandle.Init.ClockSpeed = I2C_SPEED;
I2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_2;
I2cHandle.Init.OwnAddress1 = 0;
I2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
I2cHandle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;
I2cHandle.Init.OwnAddress2 = 0;
I2cHandle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED;
I2cHandle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED;
/* Init the I2C */
I2Cx_MspInit(&I2cHandle);
HAL_I2C_Init(&I2cHandle);
}
}
/**
* @brief Interruption pin configuration for I2C communication
* @param None
* @retval None
*/
static void I2Cx_ITConfig(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Enable the GPIO EXTI Clock */
STMPE811_INT_CLK_ENABLE();
GPIO_InitStruct.Pin = STMPE811_INT_PIN;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
HAL_GPIO_Init(STMPE811_INT_GPIO_PORT, &GPIO_InitStruct);
/* Enable and set GPIO EXTI Interrupt to the lowest priority */
HAL_NVIC_SetPriority((IRQn_Type)(STMPE811_INT_EXTI), 0x00, 0x00);
HAL_NVIC_EnableIRQ((IRQn_Type)(STMPE811_INT_EXTI));
}
/**
* @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 Value: The target register value to be written
* @retval None
*/
static void I2Cx_WriteData(uint8_t Addr, uint8_t Reg, uint8_t Value)
{
HAL_StatusTypeDef status = HAL_OK;
status = HAL_I2C_Mem_Write(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, &Value, 1, I2cxTimeout);
/* Check the communication status */
if(status != HAL_OK)
{
/* Re-Initiaize the BUS */
I2Cx_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 pBuffer: The target register value to be written
* @param Length: buffer size to be written
* @retval None
*/
static void I2Cx_WriteBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length)
{
HAL_StatusTypeDef status = HAL_OK;
status = HAL_I2C_Mem_Write(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, pBuffer, Length, I2cxTimeout);
/* Check the communication status */
if(status != HAL_OK)
{
/* Re-Initiaize the BUS */
I2Cx_Error();
}
}
/**
* @brief Read a register of the device through BUS
* @param Addr Device address on BUS
* @param Reg The target register address to read
* @retval read register value
*/
static uint8_t I2Cx_ReadData(uint8_t Addr, uint8_t Reg)
{
HAL_StatusTypeDef status = HAL_OK;
uint8_t value = 0;
status = HAL_I2C_Mem_Read(&I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_8BIT, &value, 1, I2cxTimeout);
/* Check the communication status */
if(status != HAL_OK)
{
/* Re-Initiaize the BUS */
I2Cx_Error();
}
return value;
}
/**
* @brief Reads multiple data on the BUS.
* @param Addr : I2C Address
* @param Reg : Reg Address
* @param pBuffer : pointer to read data buffer
* @param Length : length of the data
* @retval 0 if no problems to read multiple data
*/
static uint8_t I2Cx_ReadBuffer(uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length)
{
HAL_StatusTypeDef status = HAL_OK;
status = HAL_I2C_Mem_Read(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, pBuffer, Length, I2cxTimeout);
/* Check the communication status */
if(status == HAL_OK)
{
return 0;
}
else
{
/* Re-Initiaize the BUS */
I2Cx_Error();
return 1;
}
}
#ifdef EE_M24LR64
/**
* @brief Write a value in a register of the device through BUS in using DMA mode
* @param Addr: Device address on BUS Bus.
* @param Reg: The target register address to write
* @param pBuffer: The target register value to be written
* @param Length: buffer size to be written
* @retval HAL status
*/
static HAL_StatusTypeDef I2Cx_WriteBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length)
{
HAL_StatusTypeDef status = HAL_OK;
status = HAL_I2C_Mem_Write_DMA(&I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_16BIT, pBuffer, Length);
/* Check the communication status */
if(status != HAL_OK)
{
/* Re-Initiaize the BUS */
I2Cx_Error();
}
return status;
}
/**
* @brief Reads multiple data on the BUS in using DMA mode
* @param Addr : I2C Address
* @param Reg : Reg Address
* @param pBuffer : pointer to read data buffer
* @param Length : length of the data
* @retval HAL status
*/
static HAL_StatusTypeDef I2Cx_ReadBufferDMA(uint8_t Addr, uint16_t Reg, uint8_t *pBuffer, uint16_t Length)
{
HAL_StatusTypeDef status = HAL_OK;
status = HAL_I2C_Mem_Read_DMA(&I2cHandle, Addr, Reg, I2C_MEMADD_SIZE_16BIT, pBuffer, Length);
/* Check the communication status */
if(status != HAL_OK)
{
/* Re-Initiaize the BUS */
I2Cx_Error();
}
return status;
}
/**
* @brief Checks if target device is ready for communication.
* @note This function is used with Memory devices
* @param DevAddress: Target device address
* @param Trials: Number of trials
* @retval HAL status
*/
static HAL_StatusTypeDef I2Cx_IsDeviceReady(uint16_t DevAddress, uint32_t Trials)
{
return (HAL_I2C_IsDeviceReady(&I2cHandle, DevAddress, Trials, I2cxTimeout));
}
#endif /*EE_M24LR64*/
/**
* @brief Discovery I2Cx error treatment function
* @param None
* @retval None
*/
static void I2Cx_Error (void)
{
/* De-initialize the SPI comunication BUS */
HAL_I2C_DeInit(&I2cHandle);
/* Re- Initiaize the SPI comunication BUS */
I2Cx_Init();
}
/******************************* SPI Routines**********************************/
/**
* @brief SPIx Bus initialization
* @param None
* @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 5.6 MHz (PCLK2/SPI_BaudRatePrescaler = 90/16 = 5.625 MHz)
to verify these constraints:
- ILI9341 LCD SPI interface max baudrate is 10MHz for write and 6.66MHz for read
- l3gd20 SPI interface max baudrate is 10MHz for write/read
- PCLK2 frequency is set to 90 MHz
*/
SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
/* On STM32F429I-DISCO, LCD ID cannot be read then keep a common configuration */
/* for LCD and GYRO (SPI_DIRECTION_2LINES) */
/* Note: To read a register a LCD, SPI_DIRECTION_1LINE should be set */
SpiHandle.Init.Direction = SPI_DIRECTION_2LINES;
SpiHandle.Init.CLKPhase = SPI_PHASE_1EDGE;
SpiHandle.Init.CLKPolarity = SPI_POLARITY_LOW;
SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
SpiHandle.Init.CRCPolynomial = 7;
SpiHandle.Init.DataSize = SPI_DATASIZE_8BIT;
SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB;
SpiHandle.Init.NSS = SPI_NSS_SOFT;
SpiHandle.Init.TIMode = SPI_TIMODE_DISABLED;
SpiHandle.Init.Mode = SPI_MODE_MASTER;
SPIx_MspInit(&SpiHandle);
HAL_SPI_Init(&SpiHandle);
}
}
/**
* @brief SPI Read 4 bytes from device
* @param ReadSize Number of bytes to read (max 4 bytes)
* @retval Value read on the SPI
*/
static uint32_t SPIx_Read(uint8_t ReadSize)
{
HAL_StatusTypeDef status = HAL_OK;
uint32_t readvalue;
status = HAL_SPI_Receive(&SpiHandle, (uint8_t*) &readvalue, ReadSize, SpixTimeout);
/* Check the communication status */
if(status != HAL_OK)
{
/* Re-Initiaize the BUS */
SPIx_Error();
}
return readvalue;
}
/**
* @brief SPI Write a byte to device
* @param Value: value to be written
* @retval None
*/
static void SPIx_Write(uint16_t Value)
{
HAL_StatusTypeDef status = HAL_OK;
status = HAL_SPI_Transmit(&SpiHandle, (uint8_t*) &Value, 1, SpixTimeout);
/* Check the communication status */
if(status != HAL_OK)
{
/* Re-Initiaize the BUS */
SPIx_Error();
}
}
/**
* @brief Sends a Byte through the SPI interface and return the Byte received
* from the SPI bus.
* @param Byte : Byte send.
* @retval The received byte value
*/
static uint8_t SPIx_WriteRead(uint8_t Byte)
{
uint8_t receivedbyte = 0;
/* Send a Byte through the SPI peripheral */
/* Read byte from the SPI bus */
if(HAL_SPI_TransmitReceive(&SpiHandle, (uint8_t*) &Byte, (uint8_t*) &receivedbyte, 1, SpixTimeout) != HAL_OK)
{
SPIx_Error();
}
return receivedbyte;
}
/**
* @brief SPI error treatment function
* @param None
* @retval None
*/
static void SPIx_Error (void)
{
/* De-initialize the SPI comunication BUS */
HAL_SPI_DeInit(&SpiHandle);
/* Re- Initiaize the SPI comunication BUS */
SPIx_Init();
}
/**
* @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_CLK_ENABLE();
/* enable DISCOVERY_SPI gpio clock */
DISCOVERY_SPIx_GPIO_CLK_ENABLE();
/* configure SPI SCK, MOSI and MISO */
GPIO_InitStructure.Pin = (DISCOVERY_SPIx_SCK_PIN | DISCOVERY_SPIx_MOSI_PIN | DISCOVERY_SPIx_MISO_PIN);
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_PULLDOWN;
GPIO_InitStructure.Speed = GPIO_SPEED_MEDIUM;
GPIO_InitStructure.Alternate = DISCOVERY_SPIx_AF;
HAL_GPIO_Init(DISCOVERY_SPIx_GPIO_PORT, &GPIO_InitStructure);
}
/********************************* LINK LCD ***********************************/
/**
* @brief Configures the LCD_SPI interface.
* @param None
* @retval None
*/
void LCD_IO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure NCS in Output Push-Pull mode */
LCD_WRX_GPIO_CLK_ENABLE();
GPIO_InitStructure.Pin = LCD_WRX_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_WRX_GPIO_PORT, &GPIO_InitStructure);
LCD_RDX_GPIO_CLK_ENABLE();
GPIO_InitStructure.Pin = LCD_RDX_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_RDX_GPIO_PORT, &GPIO_InitStructure);
/* Configure the LCD Control pins ------------------------------------------*/
LCD_NCS_GPIO_CLK_ENABLE();
/* Configure NCS in Output Push-Pull mode */
GPIO_InitStructure.Pin = LCD_NCS_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_NCS_GPIO_PORT, &GPIO_InitStructure);
/* Set or Reset the control line */
LCD_CS_LOW();
LCD_CS_HIGH();
SPIx_Init();
}
/**
* @brief Write register value.
* @param None
* @retval None
*/
void LCD_IO_WriteData(uint16_t RegValue)
{
/* Set WRX to send data */
LCD_WRX_HIGH();
/* Reset LCD control line(/CS) and Send data */
LCD_CS_LOW();
SPIx_Write(RegValue);
/* Deselect : Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief register address.
* @param None
* @retval None
*/
void LCD_IO_WriteReg(uint8_t Reg)
{
/* Reset WRX to send command */
LCD_WRX_LOW();
/* Reset LCD control line(/CS) and Send command */
LCD_CS_LOW();
SPIx_Write(Reg);
/* Deselect : Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief Read register value.
* @param RegValue Address of the register to read
* @param ReadSize Number of bytes to read
* @retval Content of the register value
*/
uint32_t LCD_IO_ReadData(uint16_t RegValue, uint8_t ReadSize)
{
uint32_t readvalue = 0;
/* Select : Chip Select low */
LCD_CS_LOW();
/* Reset WRX to send command */
LCD_WRX_LOW();
SPIx_Write(RegValue);
readvalue = SPIx_Read(ReadSize);
/* Set WRX to send data */
LCD_WRX_HIGH();
/* Deselect : Chip Select high */
LCD_CS_HIGH();
return readvalue;
}
/**
* @brief
* @param None
* @retval None
*/
void LCD_Delay (uint32_t Delay)
{
HAL_Delay (Delay);
}
/******************************************************************************
LINK OPERATIONS
*******************************************************************************/
/********************************* LINK IOE ***********************************/
/**
* @brief IOE Low Level Initialization
* @param None
* @retval None
*/
void IOE_Init (void)
{
I2Cx_Init();
}
/**
* @brief IOE Low Level Interrupt configuration
* @param None
* @retval None
*/
void IOE_ITConfig (void)
{
I2Cx_ITConfig();
}
/**
* @brief IOE Write single data operation
* @param Addr : I2C Address
* @param Reg : Reg Address
* @param Value : Data to be written
* @retval None.
*/
void IOE_Write (uint8_t Addr, uint8_t Reg, uint8_t Value)
{
I2Cx_WriteData(Addr, Reg, Value);
}
/**
* @brief IOE Read single data
* @param Addr : I2C Address
* @param Reg : Reg Address
* @retval read data.
*/
uint8_t IOE_Read (uint8_t Addr, uint8_t Reg)
{
return I2Cx_ReadData(Addr, Reg);
}
/**
* @brief IOE Write multiple data
* @param Addr : I2C Address
* @param Reg : Reg Address
* @param pBuffer : pointer to data buffer
* @param Length : length of the data
* @retval None.
*/
void IOE_WriteMultiple (uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length)
{
I2Cx_WriteBuffer(Addr, Reg, pBuffer, Length);
}
/**
* @brief IOE Read multiple data
* @param Addr : I2C Address
* @param Reg : Reg Address
* @param pBuffer : pointer to data buffer
* @param Length : length of the data
* @retval 0 if no problems to read multiple data
*/
uint16_t IOE_ReadMultiple (uint8_t Addr, uint8_t Reg, uint8_t *pBuffer, uint16_t Length)
{
return I2Cx_ReadBuffer(Addr, Reg, pBuffer, Length);
}
/**
* @brief IOE Delay
* @param delay in ms
* @retval None
*/
void IOE_Delay (uint32_t Delay)
{
HAL_Delay (Delay);
}
/********************************* LINK GYRO *****************************/
/**
* @brief Configures the GYRO SPI interface.
* @param None
* @retval None
*/
void GYRO_IO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure the Gyroscope Control pins ------------------------------------------*/
/* Enable CS GPIO clock and Configure GPIO PIN for Gyroscope Chip select */
GYRO_CS_GPIO_CLK_ENABLE();
GPIO_InitStructure.Pin = GYRO_CS_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_MEDIUM;
HAL_GPIO_Init(GYRO_CS_GPIO_PORT, &GPIO_InitStructure);
/* Deselect : Chip Select high */
GYRO_CS_HIGH();
/* Enable INT1, INT2 GPIO clock and Configure GPIO PINs to detect Interrupts */
GYRO_INT_GPIO_CLK_ENABLE();
GPIO_InitStructure.Pin = GYRO_INT1_PIN | GYRO_INT2_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
GPIO_InitStructure.Pull= GPIO_NOPULL;
HAL_GPIO_Init(GYRO_INT_GPIO_PORT, &GPIO_InitStructure);
SPIx_Init();
}
/**
* @brief Writes one byte to the GYRO.
* @param pBuffer : pointer to the buffer containing the data to be written to the GYRO.
* @param WriteAddr : GYRO's internal address to write to.
* @param NumByteToWrite: Number of bytes to write.
* @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();
/* 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 GYRO.
* @param pBuffer : pointer to the buffer that receives the data read from the GYRO.
* @param ReadAddr : GYRO's internal address to read from.
* @param NumByteToRead : number of bytes to read from the GYRO.
* @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();
/* Send the Address of the indexed register */
SPIx_WriteRead(ReadAddr);
/* Receive the data that will be read from the device (MSB First) */
while(NumByteToRead > 0x00)
{
/* Send dummy byte (0x00) to generate the SPI clock to GYRO (Slave device) */
*pBuffer = SPIx_WriteRead(DUMMY_BYTE);
NumByteToRead--;
pBuffer++;
}
/* Set chip select High at the end of the transmission */
GYRO_CS_HIGH();
}
#ifdef EE_M24LR64
/********************************* LINK I2C EEPROM *****************************/
/**
* @brief Initializes peripherals used by the I2C EEPROM driver.
* @param None
* @retval None
*/
void EEPROM_IO_Init(void)
{
I2Cx_Init();
}
/**
* @brief Write data to I2C EEPROM driver in using DMA channel
* @param DevAddress: Target device address
* @param MemAddress: Internal memory address
* @param pBuffer: Pointer to data buffer
* @param BufferSize: Amount of data to be sent
* @retval HAL status
*/
HAL_StatusTypeDef EEPROM_IO_WriteData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize)
{
return (I2Cx_WriteBufferDMA(DevAddress, MemAddress, pBuffer, BufferSize));
}
/**
* @brief Read data from I2C EEPROM driver in using DMA channel
* @param DevAddress: Target device address
* @param MemAddress: Internal memory address
* @param pBuffer: Pointer to data buffer
* @param BufferSize: Amount of data to be read
* @retval HAL status
*/
HAL_StatusTypeDef EEPROM_IO_ReadData(uint16_t DevAddress, uint16_t MemAddress, uint8_t* pBuffer, uint32_t BufferSize)
{
return (I2Cx_ReadBufferDMA(DevAddress, MemAddress, pBuffer, BufferSize));
}
/**
* @brief Checks if target device is ready for communication.
* @note This function is used with Memory devices
* @param DevAddress: Target device address
* @param Trials: Number of trials
* @retval HAL status
*/
HAL_StatusTypeDef EEPROM_IO_IsDeviceReady(uint16_t DevAddress, uint32_t Trials)
{
return (I2Cx_IsDeviceReady(DevAddress, Trials));
}
#endif /*EE_M24LR64*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/