/** ****************************************************************************** * @file stm32412g_discovery.c * @author MCD Application Team * @brief This file provides a set of firmware functions to manage LEDs, * push-buttons and COM ports available on STM32412G-DISCOVERY board * (MB1209) from STMicroelectronics. ****************************************************************************** * @attention * * Copyright (c) 2017 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** *//* ... */ /* Includes ------------------------------------------------------------------*/ #include "stm32412g_discovery.h" /** @addtogroup BSP * @{ *//* ... */ /** @addtogroup STM32412G_DISCOVERY * @{ *//* ... */ /** @defgroup STM32412G_DISCOVERY_LOW_LEVEL STM32412G-DISCOVERY LOW LEVEL * @{ *//* ... */ /** @defgroup STM32412G_DISCOVERY_LOW_LEVEL_Private_TypesDefinitions STM32412G Discovery Low Level Private Typedef * @{ *//* ... */ typedef struct { __IO uint16_t REG; __IO uint16_t RAM; ...}LCD_CONTROLLER_TypeDef; /** * @} *//* ... */ /** @defgroup STM32412G_DISCOVERY_LOW_LEVEL_Private_Defines STM32412G Discovery Low Level Private Def * @{ *//* ... */ /** * @brief STM32412G DISCOVERY BSP Driver version number V2.0.3 *//* ... */ #define __STM32412G_DISCOVERY_BSP_VERSION_MAIN (0x02) /*!< [31:24] main version */ #define __STM32412G_DISCOVERY_BSP_VERSION_SUB1 (0x00) /*!< [23:16] sub1 version */ #define __STM32412G_DISCOVERY_BSP_VERSION_SUB2 (0x03) /*!< [15:8] sub2 version */ #define __STM32412G_DISCOVERY_BSP_VERSION_RC (0x00) /*!< [7:0] release candidate */ #define __STM32412G_DISCOVERY_BSP_VERSION ((__STM32412G_DISCOVERY_BSP_VERSION_MAIN << 24)\ |(__STM32412G_DISCOVERY_BSP_VERSION_SUB1 << 16)\ |(__STM32412G_DISCOVERY_BSP_VERSION_SUB2 << 8 )\ |(__STM32412G_DISCOVERY_BSP_VERSION_RC))... /* We use BANK1 as we use FMC_NE1 signal */ #define FMC_BANK1_BASE ((uint32_t)(0x60000000 | 0x00000000)) #define FMC_BANK3_BASE ((uint32_t)(0x60000000 | 0x08000000)) #define FMC_BANK1 ((LCD_CONTROLLER_TypeDef *) FMC_BANK1_BASE) 8 defines /** * @} *//* ... */ /** @defgroup STM32412G_DISCOVERY_LOW_LEVEL_Private_Variables STM32412G Discovery Low Level Variables * @{ *//* ... */ const uint32_t GPIO_PIN[LEDn] = {LED1_PIN, LED2_PIN, LED3_PIN, LED4_PIN...}; GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {WAKEUP_BUTTON_GPIO_PORT}; const uint16_t BUTTON_PIN[BUTTONn] = {WAKEUP_BUTTON_PIN}; const uint16_t BUTTON_IRQn[BUTTONn] = {WAKEUP_BUTTON_EXTI_IRQn}; GPIO_TypeDef* JOY_PORT[JOYn] = {SEL_JOY_GPIO_PORT, DOWN_JOY_GPIO_PORT, LEFT_JOY_GPIO_PORT, RIGHT_JOY_GPIO_PORT, UP_JOY_GPIO_PORT...}; const uint16_t JOY_PIN[JOYn] = {SEL_JOY_PIN, DOWN_JOY_PIN, LEFT_JOY_PIN, RIGHT_JOY_PIN, UP_JOY_PIN...}; const uint8_t JOY_IRQn[JOYn] = {SEL_JOY_EXTI_IRQn, DOWN_JOY_EXTI_IRQn, LEFT_JOY_EXTI_IRQn, RIGHT_JOY_EXTI_IRQn, UP_JOY_EXTI_IRQn...}; USART_TypeDef* COM_USART[COMn] = {DISCOVERY_COM1}; GPIO_TypeDef* COM_TX_PORT[COMn] = {DISCOVERY_COM1_TX_GPIO_PORT}; GPIO_TypeDef* COM_RX_PORT[COMn] = {DISCOVERY_COM1_RX_GPIO_PORT}; const uint16_t COM_TX_PIN[COMn] = {DISCOVERY_COM1_TX_PIN}; const uint16_t COM_RX_PIN[COMn] = {DISCOVERY_COM1_RX_PIN}; const uint16_t COM_TX_AF[COMn] = {DISCOVERY_COM1_TX_AF}; const uint16_t COM_RX_AF[COMn] = {DISCOVERY_COM1_RX_AF}; static I2C_HandleTypeDef hI2cAudioHandler; static I2C_HandleTypeDef hI2cExtHandler; /** * @} *//* ... */ /** @defgroup STM32412G_DISCOVERY_LOW_LEVEL_Private_FunctionPrototypes STM32412G Discovery Low Level Private Prototypes * @{ *//* ... */ static void I2Cx_MspInit(I2C_HandleTypeDef *i2c_handler); static void I2Cx_Init(I2C_HandleTypeDef *i2c_handler); static HAL_StatusTypeDef I2Cx_ReadMultiple(I2C_HandleTypeDef *i2c_handler, uint8_t Addr, uint16_t Reg, uint16_t MemAddSize, uint8_t *Buffer, uint16_t Length); static HAL_StatusTypeDef I2Cx_WriteMultiple(I2C_HandleTypeDef *i2c_handler, uint8_t Addr, uint16_t Reg, uint16_t MemAddSize, uint8_t *Buffer, uint16_t Length); static HAL_StatusTypeDef I2Cx_IsDeviceReady(I2C_HandleTypeDef *i2c_handler, uint16_t DevAddress, uint32_t Trials); static void I2Cx_Error(I2C_HandleTypeDef *i2c_handler, uint8_t Addr); static void FMC_BANK1_WriteData(uint16_t Data); static void FMC_BANK1_WriteReg(uint8_t Reg); static uint16_t FMC_BANK1_ReadData(void); static void FMC_BANK1_Init(void); static void FMC_BANK1_MspInit(void); /* LCD IO functions */ void LCD_IO_Init(void); void LCD_IO_WriteData(uint16_t RegValue); void LCD_IO_WriteReg(uint8_t Reg); void LCD_IO_WriteMultipleData(uint16_t *pData, uint32_t Size); uint16_t LCD_IO_ReadData(void); void LCD_IO_Delay(uint32_t Delay); /* AUDIO IO functions */ void AUDIO_IO_Init(void); void AUDIO_IO_DeInit(void); void AUDIO_IO_Write(uint8_t Addr, uint16_t Reg, uint16_t Value); uint16_t AUDIO_IO_Read(uint8_t Addr, uint16_t Reg); void AUDIO_IO_Delay(uint32_t Delay); /* I2C EEPROM IO function */ 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); /* TouchScreen (TS) IO functions */ void TS_IO_Init(void); void TS_IO_Write(uint8_t Addr, uint8_t Reg, uint8_t Value); uint8_t TS_IO_Read(uint8_t Addr, uint8_t Reg); uint16_t TS_IO_ReadMultiple(uint8_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length); void TS_IO_WriteMultiple(uint8_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length); void TS_IO_Delay(uint32_t Delay); /** * @} *//* ... */ /** @defgroup STM32412G_DISCOVERY_LOW_LEVEL_Private_Functions STM32412G Discovery Low Level Private Functions * @{ *//* ... */ /** * @brief This method returns the STM32412G DISCOVERY BSP Driver revision * @retval version: 0xXYZR (8bits for each decimal, R for RC) *//* ... */ uint32_t BSP_GetVersion(void) { return __STM32412G_DISCOVERY_BSP_VERSION; }{ ... } /** * @brief Configures LEDs. * @param Led: LED to be configured. * This parameter can be one of the following values: * @arg LED1 * @arg LED2 * @arg LED3 * @arg LED4 *//* ... */ void BSP_LED_Init(Led_TypeDef Led) { GPIO_InitTypeDef gpio_init_structure; /* Enable the GPIO_LED clock */ LEDx_GPIO_CLK_ENABLE(); /* Configure the GPIO_LED pin */ gpio_init_structure.Pin = GPIO_PIN[Led]; gpio_init_structure.Mode = GPIO_MODE_OUTPUT_PP; gpio_init_structure.Pull = GPIO_PULLUP; gpio_init_structure.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(LEDx_GPIO_PORT, &gpio_init_structure); /* By default, turn off LED */ HAL_GPIO_WritePin(LEDx_GPIO_PORT, GPIO_PIN[Led], GPIO_PIN_SET); }{ ... } /** * @brief DeInit LEDs. * @param Led: LED to be configured. * This parameter can be one of the following values: * @arg LED1 * @arg LED2 * @arg LED3 * @arg LED4 * @note Led DeInit does not disable the GPIO clock nor disable the Mfx *//* ... */ void BSP_LED_DeInit(Led_TypeDef Led) { GPIO_InitTypeDef gpio_init_structure; /* Turn off LED */ HAL_GPIO_WritePin(LEDx_GPIO_PORT, GPIO_PIN[Led], GPIO_PIN_RESET); /* DeInit the GPIO_LED pin */ gpio_init_structure.Pin = GPIO_PIN[Led]; HAL_GPIO_DeInit(LEDx_GPIO_PORT, gpio_init_structure.Pin); }{ ... } /** * @brief Turns selected LED On. * @param Led: LED to be set on * This parameter can be one of the following values: * @arg LED1 * @arg LED2 * @arg LED3 * @arg LED4 *//* ... */ void BSP_LED_On(Led_TypeDef Led) { HAL_GPIO_WritePin(LEDx_GPIO_PORT, GPIO_PIN[Led], GPIO_PIN_RESET); }{ ... } /** * @brief Turns selected LED Off. * @param Led: LED to be set off * This parameter can be one of the following values: * @arg LED1 * @arg LED2 * @arg LED3 * @arg LED4 *//* ... */ void BSP_LED_Off(Led_TypeDef Led) { HAL_GPIO_WritePin(LEDx_GPIO_PORT, GPIO_PIN[Led], GPIO_PIN_SET); }{ ... } /** * @brief Toggles the selected LED. * @param Led: LED to be toggled * This parameter can be one of the following values: * @arg LED1 * @arg LED2 * @arg LED3 * @arg LED4 *//* ... */ void BSP_LED_Toggle(Led_TypeDef Led) { HAL_GPIO_TogglePin(LEDx_GPIO_PORT, GPIO_PIN[Led]); }{ ... } /** * @brief Configures button GPIO and EXTI Line. * @param Button: Button to be configured * This parameter can be one of the following values: * @arg BUTTON_WAKEUP: Wakeup Push Button * @param ButtonMode: Button mode * This parameter can be one of the following values: * @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 * @note On STM32412G-DISCOVERY board, the Wakeup button is mapped on * the same push button which is the joystick selection button. *//* ... */ void BSP_PB_Init(Button_TypeDef Button, ButtonMode_TypeDef ButtonMode) { GPIO_InitTypeDef gpio_init_structure; /* Enable the BUTTON clock */ WAKEUP_BUTTON_GPIO_CLK_ENABLE(); if(ButtonMode == BUTTON_MODE_GPIO) { /* Configure Button pin as input */ gpio_init_structure.Pin = BUTTON_PIN[Button]; gpio_init_structure.Mode = GPIO_MODE_INPUT; gpio_init_structure.Pull = GPIO_PULLDOWN; gpio_init_structure.Speed = GPIO_SPEED_FREQ_VERY_HIGH; HAL_GPIO_Init(BUTTON_PORT[Button], &gpio_init_structure); }if (ButtonMode == BUTTON_MODE_GPIO) { ... } if(ButtonMode == BUTTON_MODE_EXTI) { /* Configure Button pin as input with External interrupt */ gpio_init_structure.Pin = BUTTON_PIN[Button]; gpio_init_structure.Pull = GPIO_PULLDOWN; gpio_init_structure.Speed = GPIO_SPEED_FREQ_VERY_HIGH; gpio_init_structure.Mode = GPIO_MODE_IT_RISING; HAL_GPIO_Init(BUTTON_PORT[Button], &gpio_init_structure); /* Enable and set Button EXTI Interrupt to the lowest priority */ HAL_NVIC_SetPriority((IRQn_Type)(BUTTON_IRQn[Button]), 0x0F, 0x00); HAL_NVIC_EnableIRQ((IRQn_Type)(BUTTON_IRQn[Button])); }if (ButtonMode == BUTTON_MODE_EXTI) { ... } }{ ... } /** * @brief Push Button DeInit. * @param Button: Button to be configured * This parameter can be one of the following values: * @arg BUTTON_WAKEUP: Wakeup Push Button * @note On STM32412G-DISCOVERY board, the Wakeup button is mapped on * the same push button which is the joystick selection button. * @note PB DeInit does not disable the GPIO clock *//* ... */ void BSP_PB_DeInit(Button_TypeDef Button) { GPIO_InitTypeDef gpio_init_structure; gpio_init_structure.Pin = BUTTON_PIN[Button]; HAL_NVIC_DisableIRQ((IRQn_Type)(BUTTON_IRQn[Button])); HAL_GPIO_DeInit(BUTTON_PORT[Button], gpio_init_structure.Pin); }{ ... } /** * @brief Returns the selected button state. * @param Button: Button to be checked * This parameter can be one of the following values: * @arg BUTTON_WAKEUP: Wakeup Push Button * @note On STM32412G-DISCOVERY board, the Wakeup button is mapped on * the same push button which is the joystick selection button. * @retval The Button GPIO pin value (GPIO_PIN_RESET = button pressed) *//* ... */ uint32_t BSP_PB_GetState(Button_TypeDef Button) { return HAL_GPIO_ReadPin(BUTTON_PORT[Button], BUTTON_PIN[Button]); }{ ... } /** * @brief Configures all joystick's buttons in GPIO or EXTI modes. * @param Joy_Mode: Joystick mode. * This parameter can be one of the following values: * JOY_MODE_GPIO: Joystick pins will be used as simple IOs * JOY_MODE_EXTI: Joystick pins will be connected to EXTI line * with interrupt generation capability * @retval HAL_OK: if all initializations are OK. Other value if error. *//* ... */ uint8_t BSP_JOY_Init(JOYMode_TypeDef Joy_Mode) { JOYState_TypeDef joykey; GPIO_InitTypeDef GPIO_InitStruct; /* Initialized the Joystick. */ for(joykey = JOY_SEL; joykey < (JOY_SEL + JOYn) ; joykey++) { /* Enable the JOY clock */ JOYx_GPIO_CLK_ENABLE(joykey); GPIO_InitStruct.Pin = JOY_PIN[joykey]; GPIO_InitStruct.Pull = GPIO_PULLDOWN; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; if (Joy_Mode == JOY_MODE_GPIO) { /* Configure Joy pin as input */ GPIO_InitStruct.Mode = GPIO_MODE_INPUT; HAL_GPIO_Init(JOY_PORT[joykey], &GPIO_InitStruct); }if (Joy_Mode == JOY_MODE_GPIO) { ... } else if (Joy_Mode == JOY_MODE_EXTI) { /* Configure Joy pin as input with External interrupt */ GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING; HAL_GPIO_Init(JOY_PORT[joykey], &GPIO_InitStruct); /* Enable and set Joy EXTI Interrupt to the lowest priority */ HAL_NVIC_SetPriority((IRQn_Type)(JOY_IRQn[joykey]), 0x0F, 0x00); HAL_NVIC_EnableIRQ((IRQn_Type)(JOY_IRQn[joykey])); }else if (Joy_Mode == JOY_MODE_EXTI) { ... } }for (joykey = JOY_SEL; joykey < (JOY_SEL + JOYn) ; joykey++) { ... } return HAL_OK; }{ ... } /** * @brief Unconfigures all GPIOs used as joystick's buttons. *//* ... */ void BSP_JOY_DeInit(void) { JOYState_TypeDef joykey; /* Initialized the Joystick. */ for(joykey = JOY_SEL; joykey < (JOY_SEL + JOYn) ; joykey++) { /* Enable the JOY clock */ JOYx_GPIO_CLK_ENABLE(joykey); HAL_GPIO_DeInit(JOY_PORT[joykey], JOY_PIN[joykey]); }for (joykey = JOY_SEL; joykey < (JOY_SEL + JOYn) ; joykey++) { ... } }{ ... } /** * @brief Returns the current joystick status. * @retval Code of the joystick key pressed * This code can be one of the following values: * @arg JOY_NONE * @arg JOY_SEL * @arg JOY_DOWN * @arg JOY_LEFT * @arg JOY_RIGHT * @arg JOY_UP *//* ... */ JOYState_TypeDef BSP_JOY_GetState(void) { JOYState_TypeDef joykey; for (joykey = JOY_SEL; joykey < (JOY_SEL + JOYn) ; joykey++) { if (HAL_GPIO_ReadPin(JOY_PORT[joykey], JOY_PIN[joykey]) != GPIO_PIN_RESET) { /* Return Code Joystick key pressed */ return joykey; }if (HAL_GPIO_ReadPin(JOY_PORT[joykey], JOY_PIN[joykey]) != GPIO_PIN_RESET) { ... } }for (joykey = JOY_SEL; joykey < (JOY_SEL + JOYn) ; joykey++) { ... } /* No Joystick key pressed */ return JOY_NONE; }{ ... } /** * @brief Configures COM port. * @param COM: COM port to be configured. * This parameter can be one of the following values: * @arg COM1 * @param huart: Pointer to a UART_HandleTypeDef structure that contains the * configuration information for the specified USART peripheral. *//* ... */ void BSP_COM_Init(COM_TypeDef COM, UART_HandleTypeDef *huart) { GPIO_InitTypeDef gpio_init_structure; /* Enable GPIO clock */ DISCOVERY_COMx_TX_GPIO_CLK_ENABLE(COM); DISCOVERY_COMx_RX_GPIO_CLK_ENABLE(COM); /* Enable USART clock */ DISCOVERY_COMx_CLK_ENABLE(COM); /* Configure USART Tx as alternate function */ gpio_init_structure.Pin = COM_TX_PIN[COM]; gpio_init_structure.Mode = GPIO_MODE_AF_PP; gpio_init_structure.Speed = GPIO_SPEED_FREQ_HIGH; gpio_init_structure.Pull = GPIO_PULLUP; gpio_init_structure.Alternate = COM_TX_AF[COM]; HAL_GPIO_Init(COM_TX_PORT[COM], &gpio_init_structure); /* Configure USART Rx as alternate function */ gpio_init_structure.Pin = COM_RX_PIN[COM]; gpio_init_structure.Mode = GPIO_MODE_AF_PP; gpio_init_structure.Alternate = COM_RX_AF[COM]; HAL_GPIO_Init(COM_RX_PORT[COM], &gpio_init_structure); /* USART configuration */ huart->Instance = COM_USART[COM]; HAL_UART_Init(huart); }{ ... } /** * @brief DeInit COM port. * @param COM: COM port to be configured. * This parameter can be one of the following values: * @arg COM1 * @param huart: Pointer to a UART_HandleTypeDef structure that contains the * configuration information for the specified USART peripheral. *//* ... */ void BSP_COM_DeInit(COM_TypeDef COM, UART_HandleTypeDef *huart) { /* USART configuration */ huart->Instance = COM_USART[COM]; HAL_UART_DeInit(huart); /* Enable USART clock */ DISCOVERY_COMx_CLK_DISABLE(COM); /* DeInit GPIO pins can be done in the application (by surcharging this __weak function) *//* ... */ /* GPIO pins clock, FMC clock and DMA clock can be shut down in the application by surcharging this __weak function *//* ... */ }{ ... } /******************************************************************************* BUS OPERATIONS *******************************************************************************//* ... */ /******************************* I2C Routines *********************************/ /** * @brief Initializes I2C MSP. * @param i2c_handler : I2C handler *//* ... */ static void I2Cx_MspInit(I2C_HandleTypeDef *i2c_handler) { GPIO_InitTypeDef gpio_init_structure; if (i2c_handler == (I2C_HandleTypeDef*)(&hI2cAudioHandler)) { /* AUDIO I2C MSP init */ /*** Configure the GPIOs ***/ /* Enable GPIO clock */ DISCOVERY_AUDIO_I2Cx_SCL_SDA_GPIO_CLK_ENABLE(); /* Configure I2C Tx as alternate function */ gpio_init_structure.Pin = DISCOVERY_AUDIO_I2Cx_SCL_PIN; gpio_init_structure.Mode = GPIO_MODE_AF_OD; gpio_init_structure.Pull = GPIO_NOPULL; gpio_init_structure.Speed = GPIO_SPEED_FREQ_HIGH; gpio_init_structure.Alternate = DISCOVERY_AUDIO_I2Cx_SCL_SDA_AF; HAL_GPIO_Init(DISCOVERY_AUDIO_I2Cx_SCL_SDA_GPIO_PORT, &gpio_init_structure); /* Configure I2C Rx as alternate function */ gpio_init_structure.Pin = DISCOVERY_AUDIO_I2Cx_SDA_PIN; HAL_GPIO_Init(DISCOVERY_AUDIO_I2Cx_SCL_SDA_GPIO_PORT, &gpio_init_structure); /*** Configure the I2C peripheral ***/ /* Enable I2C clock */ DISCOVERY_AUDIO_I2Cx_CLK_ENABLE(); /* Force the I2C peripheral clock reset */ DISCOVERY_AUDIO_I2Cx_FORCE_RESET(); /* Release the I2C peripheral clock reset */ DISCOVERY_AUDIO_I2Cx_RELEASE_RESET(); /* Enable and set I2Cx Interrupt to a lower priority */ HAL_NVIC_SetPriority(DISCOVERY_AUDIO_I2Cx_EV_IRQn, 0x0F, 0x00); HAL_NVIC_EnableIRQ(DISCOVERY_AUDIO_I2Cx_EV_IRQn); /* Enable and set I2Cx Interrupt to a lower priority */ HAL_NVIC_SetPriority(DISCOVERY_AUDIO_I2Cx_ER_IRQn, 0x0F, 0x00); HAL_NVIC_EnableIRQ(DISCOVERY_AUDIO_I2Cx_ER_IRQn); }if (i2c_handler == (I2C_HandleTypeDef*)(&hI2cAudioHandler)) { ... } else { /* External and Arduino connector I2C MSP init */ /*** Configure the GPIOs ***/ /* Enable GPIO clock */ DISCOVERY_EXT_I2Cx_SCL_SDA_GPIO_CLK_ENABLE(); /* Configure I2C Tx as alternate function */ gpio_init_structure.Pin = DISCOVERY_EXT_I2Cx_SCL_PIN; gpio_init_structure.Mode = GPIO_MODE_AF_OD; gpio_init_structure.Pull = GPIO_NOPULL; gpio_init_structure.Speed = GPIO_SPEED_FREQ_HIGH; gpio_init_structure.Alternate = DISCOVERY_EXT_I2Cx_SCL_AF; HAL_GPIO_Init(DISCOVERY_EXT_I2Cx_SCL_SDA_GPIO_PORT, &gpio_init_structure); /* Configure I2C Rx as alternate function */ gpio_init_structure.Pin = DISCOVERY_EXT_I2Cx_SDA_PIN; gpio_init_structure.Alternate = DISCOVERY_EXT_I2Cx_SDA_AF; HAL_GPIO_Init(DISCOVERY_EXT_I2Cx_SCL_SDA_GPIO_PORT, &gpio_init_structure); /*** Configure the I2C peripheral ***/ /* Enable I2C clock */ DISCOVERY_EXT_I2Cx_CLK_ENABLE(); /* Force the I2C peripheral clock reset */ DISCOVERY_EXT_I2Cx_FORCE_RESET(); /* Release the I2C peripheral clock reset */ DISCOVERY_EXT_I2Cx_RELEASE_RESET(); /* Enable and set I2Cx Interrupt to a lower priority */ HAL_NVIC_SetPriority(DISCOVERY_EXT_I2Cx_EV_IRQn, 0x0F, 0x00); HAL_NVIC_EnableIRQ(DISCOVERY_EXT_I2Cx_EV_IRQn); /* Enable and set I2Cx Interrupt to a lower priority */ HAL_NVIC_SetPriority(DISCOVERY_EXT_I2Cx_ER_IRQn, 0x0F, 0x00); HAL_NVIC_EnableIRQ(DISCOVERY_EXT_I2Cx_ER_IRQn); }else { ... } }{ ... } /** * @brief Initializes I2C HAL. * @param i2c_handler : I2C handler *//* ... */ static void I2Cx_Init(I2C_HandleTypeDef *i2c_handler) { if(HAL_I2C_GetState(i2c_handler) == HAL_I2C_STATE_RESET) { if (i2c_handler == (I2C_HandleTypeDef*)(&hI2cAudioHandler)) { /* Audio and LCD I2C configuration */ i2c_handler->Instance = DISCOVERY_AUDIO_I2Cx; }if (i2c_handler == (I2C_HandleTypeDef*)(&hI2cAudioHandler)) { ... } else { /* External, EEPROM and Arduino connector I2C configuration */ i2c_handler->Instance = DISCOVERY_EXT_I2Cx; }else { ... } i2c_handler->Init.ClockSpeed = DISCOVERY_I2C_SPEED; i2c_handler->Init.DutyCycle = I2C_DUTYCYCLE_2; i2c_handler->Init.OwnAddress1 = 0; i2c_handler->Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT; i2c_handler->Init.DualAddressMode = I2C_DUALADDRESS_DISABLE; i2c_handler->Init.OwnAddress2 = 0; i2c_handler->Init.GeneralCallMode = I2C_GENERALCALL_DISABLE; i2c_handler->Init.NoStretchMode = I2C_NOSTRETCH_DISABLE; /* Init the I2C */ I2Cx_MspInit(i2c_handler); HAL_I2C_Init(i2c_handler); }if (HAL_I2C_GetState(i2c_handler) == HAL_I2C_STATE_RESET) { ... } }{ ... } /** * @brief Reads multiple data. * @param i2c_handler : I2C handler * @param Addr: I2C address * @param Reg: Reg address * @param MemAddress: Memory address * @param Buffer: Pointer to data buffer * @param Length: Length of the data * @retval HAL status *//* ... */ static HAL_StatusTypeDef I2Cx_ReadMultiple(I2C_HandleTypeDef *i2c_handler, uint8_t Addr, uint16_t Reg, uint16_t MemAddress, uint8_t *Buffer, uint16_t Length) { HAL_StatusTypeDef status = HAL_OK; status = HAL_I2C_Mem_Read(i2c_handler, Addr, (uint16_t)Reg, MemAddress, Buffer, Length, 1000); /* Check the communication status */ if(status != HAL_OK) { /* I2C error occurred */ I2Cx_Error(i2c_handler, Addr); }if (status != HAL_OK) { ... } return status; }{ ... } /** * @brief Writes a value in a register of the device through BUS in using DMA mode. * @param i2c_handler : I2C handler * @param Addr: Device address on BUS Bus. * @param Reg: The target register address to write * @param MemAddress: Memory address * @param Buffer: The target register value to be written * @param Length: buffer size to be written * @retval HAL status *//* ... */ static HAL_StatusTypeDef I2Cx_WriteMultiple(I2C_HandleTypeDef *i2c_handler, uint8_t Addr, uint16_t Reg, uint16_t MemAddress, uint8_t *Buffer, uint16_t Length) { HAL_StatusTypeDef status = HAL_OK; status = HAL_I2C_Mem_Write(i2c_handler, Addr, (uint16_t)Reg, MemAddress, Buffer, Length, 1000); /* Check the communication status */ if(status != HAL_OK) { /* Re-Initialize the I2C Bus */ I2Cx_Error(i2c_handler, Addr); }if (status != HAL_OK) { ... } return status; }{ ... } /** * @brief Checks if target device is ready for communication. * @note This function is used with Memory devices * @param i2c_handler : I2C handler * @param DevAddress: Target device address * @param Trials: Number of trials * @retval HAL status *//* ... */ static HAL_StatusTypeDef I2Cx_IsDeviceReady(I2C_HandleTypeDef *i2c_handler, uint16_t DevAddress, uint32_t Trials) { return (HAL_I2C_IsDeviceReady(i2c_handler, DevAddress, Trials, 1000)); }{ ... } /** * @brief Manages error callback by re-initializing I2C. * @param i2c_handler : I2C handler * @param Addr: I2C Address *//* ... */ static void I2Cx_Error(I2C_HandleTypeDef *i2c_handler, uint8_t Addr) { /* De-initialize the I2C communication bus */ HAL_I2C_DeInit(i2c_handler); /* Re-Initialize the I2C communication bus */ I2Cx_Init(i2c_handler); }{ ... } /** * @brief Deinitializes I2C interface * @param i2c_handler : I2C handler *//* ... */ static void I2Cx_DeInit(I2C_HandleTypeDef *i2c_handler) { if (i2c_handler == (I2C_HandleTypeDef*)(&hI2cAudioHandler)) { /* Audio and LCD I2C configuration */ i2c_handler->Instance = DISCOVERY_AUDIO_I2Cx; }if (i2c_handler == (I2C_HandleTypeDef*)(&hI2cAudioHandler)) { ... } else { /* External, EEPROM and Arduino connector I2C configuration */ i2c_handler->Instance = DISCOVERY_EXT_I2Cx; }else { ... } /* Disable I2C block */ __HAL_I2C_DISABLE(i2c_handler); /* DeInit the I2S */ HAL_I2C_DeInit(i2c_handler); }{ ... } I2C Routines /*************************** FMC Routines ************************************/ /** * @brief Initializes FMC_BANK1 MSP. *//* ... */ static void FMC_BANK1_MspInit(void) { GPIO_InitTypeDef gpio_init_structure; /* Enable FSMC clock */ __HAL_RCC_FSMC_CLK_ENABLE(); /* Enable GPIOs clock */ __HAL_RCC_GPIOD_CLK_ENABLE(); __HAL_RCC_GPIOE_CLK_ENABLE(); __HAL_RCC_GPIOF_CLK_ENABLE(); /* Common GPIO configuration */ gpio_init_structure.Mode = GPIO_MODE_AF_PP; gpio_init_structure.Pull = GPIO_PULLUP; gpio_init_structure.Speed = GPIO_SPEED_FREQ_VERY_HIGH; gpio_init_structure.Alternate = GPIO_AF12_FSMC; /* GPIOD configuration */ /* GPIO_PIN_7 is FMC_NE1 */ gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_8 |\ GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15 | GPIO_PIN_7; HAL_GPIO_Init(GPIOD, &gpio_init_structure); /* GPIOE configuration */ gpio_init_structure.Pin = GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 |\ GPIO_PIN_12 |GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15; HAL_GPIO_Init(GPIOE, &gpio_init_structure); /* GPIOF configuration */ gpio_init_structure.Pin = GPIO_PIN_0 ; HAL_GPIO_Init(GPIOF, &gpio_init_structure); }{ ... } /** * @brief Initializes LCD IO. *//* ... */ static void FMC_BANK1_Init(void) { SRAM_HandleTypeDef hsram; FMC_NORSRAM_TimingTypeDef sram_timing; FMC_NORSRAM_TimingTypeDef sram_timing_write; /*** Configure the SRAM Bank 1 ***/ /* Configure IPs */ hsram.Instance = FSMC_NORSRAM_DEVICE; hsram.Extended = FSMC_NORSRAM_EXTENDED_DEVICE; /* Timing for READING */ sram_timing.AddressSetupTime = 9; sram_timing.AddressHoldTime = 1; sram_timing.DataSetupTime = 36; sram_timing.BusTurnAroundDuration = 1; sram_timing.CLKDivision = 2; sram_timing.DataLatency = 2; sram_timing.AccessMode = FSMC_ACCESS_MODE_A; /* Timing for WRITING*/ sram_timing_write.AddressSetupTime = 1; sram_timing_write.AddressHoldTime = 1; sram_timing_write.DataSetupTime = 7; sram_timing_write.BusTurnAroundDuration = 0; sram_timing_write.CLKDivision = 2; sram_timing_write.DataLatency = 2; sram_timing_write.AccessMode = FSMC_ACCESS_MODE_A; hsram.Init.NSBank = FSMC_NORSRAM_BANK1; hsram.Init.DataAddressMux = FSMC_DATA_ADDRESS_MUX_DISABLE; hsram.Init.MemoryType = FSMC_MEMORY_TYPE_SRAM; hsram.Init.MemoryDataWidth = FSMC_NORSRAM_MEM_BUS_WIDTH_16; hsram.Init.BurstAccessMode = FSMC_BURST_ACCESS_MODE_DISABLE; hsram.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_LOW; hsram.Init.WrapMode = FSMC_WRAP_MODE_DISABLE; hsram.Init.WaitSignalActive = FSMC_WAIT_TIMING_BEFORE_WS; hsram.Init.WriteOperation = FSMC_WRITE_OPERATION_ENABLE; hsram.Init.WaitSignal = FSMC_WAIT_SIGNAL_DISABLE; hsram.Init.ExtendedMode = FSMC_EXTENDED_MODE_ENABLE; hsram.Init.AsynchronousWait = FSMC_ASYNCHRONOUS_WAIT_DISABLE; hsram.Init.WriteBurst = FSMC_WRITE_BURST_DISABLE; hsram.Init.WriteFifo = FSMC_WRITE_FIFO_DISABLE; hsram.Init.PageSize = FSMC_PAGE_SIZE_NONE; hsram.Init.ContinuousClock = FSMC_CONTINUOUS_CLOCK_SYNC_ONLY; /* Initialize the SRAM controller */ FMC_BANK1_MspInit(); HAL_SRAM_Init(&hsram, &sram_timing, &sram_timing_write); }{ ... } /** * @brief Writes register value. * @param Data: Data to be written *//* ... */ static void FMC_BANK1_WriteData(uint16_t Data) { /* Write 16-bit Reg */ FMC_BANK1->RAM = Data; __DSB(); }{ ... } /** * @brief Writes register address. * @param Reg: Register to be written *//* ... */ static void FMC_BANK1_WriteReg(uint8_t Reg) { /* Write 16-bit Index, then write register */ FMC_BANK1->REG = Reg; __DSB(); }{ ... } /** * @brief Reads register value. * @retval Read value *//* ... */ static uint16_t FMC_BANK1_ReadData(void) { return FMC_BANK1->RAM; }{ ... } /******************************************************************************* LINK OPERATIONS *******************************************************************************//* ... */ FMC Routines /********************************* LINK LCD ***********************************/ /** * @brief Initializes LCD low level. *//* ... */ void LCD_IO_Init(void) { FMC_BANK1_Init(); }{ ... } /** * @brief Writes data on LCD data register. * @param RegValue: Data to be written *//* ... */ void LCD_IO_WriteData(uint16_t RegValue) { /* Write 16-bit Reg */ FMC_BANK1_WriteData(RegValue); }{ ... } /** * @brief Writes several data on LCD data register. * @param pData: pointer on data to be written * @param Size: data amount in 16bits short unit *//* ... */ void LCD_IO_WriteMultipleData(uint16_t *pData, uint32_t Size) { uint32_t i; for (i = 0; i < Size; i++) { FMC_BANK1_WriteData(pData[i]); }for (i = 0; i < Size; i++) { ... } }{ ... } /** * @brief Writes register on LCD register. * @param Reg: Register to be written *//* ... */ void LCD_IO_WriteReg(uint8_t Reg) { /* Write 16-bit Index, then Write Reg */ FMC_BANK1_WriteReg(Reg); }{ ... } /** * @brief Reads data from LCD data register. * @retval Read data. *//* ... */ uint16_t LCD_IO_ReadData(void) { return FMC_BANK1_ReadData(); }{ ... } /** * @brief LCD delay * @param Delay: Delay in ms *//* ... */ void LCD_IO_Delay(uint32_t Delay) { HAL_Delay(Delay); }{ ... } LINK LCD /********************************* LINK AUDIO *********************************/ /** * @brief Initializes Audio low level. *//* ... */ void AUDIO_IO_Init(void) { I2Cx_Init(&hI2cAudioHandler); }{ ... } /** * @brief Deinitializes Audio low level. *//* ... */ void AUDIO_IO_DeInit(void) { I2Cx_DeInit(&hI2cAudioHandler); }{ ... } /** * @brief Writes a single data. * @param Addr: I2C address * @param Reg: Reg address * @param Value: Data to be written *//* ... */ void AUDIO_IO_Write(uint8_t Addr, uint16_t Reg, uint16_t Value) { uint16_t tmp = Value; Value = ((uint16_t)(tmp >> 8) & 0x00FF); Value |= ((uint16_t)(tmp << 8)& 0xFF00); I2Cx_WriteMultiple(&hI2cAudioHandler, Addr, Reg, I2C_MEMADD_SIZE_16BIT,(uint8_t*)&Value, 2); }{ ... } /** * @brief Reads a single data. * @param Addr: I2C address * @param Reg: Reg address * @retval Data to be read *//* ... */ uint16_t AUDIO_IO_Read(uint8_t Addr, uint16_t Reg) { uint16_t read_value = 0, tmp = 0; I2Cx_ReadMultiple(&hI2cAudioHandler, Addr, Reg, I2C_MEMADD_SIZE_16BIT, (uint8_t*)&read_value, 2); tmp = ((uint16_t)(read_value >> 8) & 0x00FF); tmp |= ((uint16_t)(read_value << 8)& 0xFF00); read_value = tmp; return read_value; }{ ... } /** * @brief AUDIO Codec delay * @param Delay: Delay in ms *//* ... */ void AUDIO_IO_Delay(uint32_t Delay) { HAL_Delay(Delay); }{ ... } LINK AUDIO /******************************** LINK I2C EEPROM *****************************/ /** * @brief Initializes peripherals used by the I2C EEPROM driver. *//* ... */ void EEPROM_IO_Init(void) { I2Cx_Init(&hI2cExtHandler); }{ ... } /** * @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_WriteMultiple(&hI2cExtHandler, DevAddress, MemAddress, I2C_MEMADD_SIZE_16BIT, 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_ReadMultiple(&hI2cExtHandler, DevAddress, MemAddress, I2C_MEMADD_SIZE_16BIT, 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(&hI2cExtHandler, DevAddress, Trials)); }{ ... } LINK I2C EEPROM /************************** LINK TS (TouchScreen) *****************************/ /** * @brief Initializes Touchscreen low level. *//* ... */ void TS_IO_Init(void) { I2Cx_Init(&hI2cAudioHandler); }{ ... } /** * @brief Writes a single data. * @param Addr: I2C address * @param Reg: Reg address * @param Value: Data to be written *//* ... */ void TS_IO_Write(uint8_t Addr, uint8_t Reg, uint8_t Value) { I2Cx_WriteMultiple(&hI2cAudioHandler, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT,(uint8_t*)&Value, 1); }{ ... } /** * @brief Reads a single data. * @param Addr: I2C address * @param Reg: Reg address * @retval Data to be read *//* ... */ uint8_t TS_IO_Read(uint8_t Addr, uint8_t Reg) { uint8_t read_value = 0; I2Cx_ReadMultiple(&hI2cAudioHandler, Addr, Reg, I2C_MEMADD_SIZE_8BIT, (uint8_t*)&read_value, 1); return read_value; }{ ... } /** * @brief Reads multiple data with I2C communication * channel from TouchScreen. * @param Addr: I2C address * @param Reg: Register address * @param Buffer: Pointer to data buffer * @param Length: Length of the data * @retval HAL status *//* ... */ uint16_t TS_IO_ReadMultiple(uint8_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length) { return I2Cx_ReadMultiple(&hI2cAudioHandler, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, Buffer, Length); }{ ... } /** * @brief Writes multiple data with I2C communication * channel from MCU to TouchScreen. * @param Addr: I2C address * @param Reg: Register address * @param Buffer: Pointer to data buffer * @param Length: Length of the data *//* ... */ void TS_IO_WriteMultiple(uint8_t Addr, uint8_t Reg, uint8_t *Buffer, uint16_t Length) { I2Cx_WriteMultiple(&hI2cAudioHandler, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, Buffer, Length); }{ ... } /** * @brief Delay function used in TouchScreen low level driver. * @param Delay: Delay in ms *//* ... */ void TS_IO_Delay(uint32_t Delay) { HAL_Delay(Delay); }{ ... } /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */