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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [CORTEX_STM32L152_IAR/] [system_and_ST_code/] [STM32L152_EVAL/] [stm32l152_eval.c] - Rev 596
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/** ****************************************************************************** * @file stm32l152_eval.c * @author MCD Application Team * @version V4.4.0RC1 * @date 07/02/2010 * @brief This file provides * - set of firmware functions to manage Leds, push-button and COM ports * - low level initialization functions for SD card (on SPI) and * temperature sensor (LM75) * available on STM32L152-EVAL evaluation board from STMicroelectronics. ****************************************************************************** * @copy * * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. * * <h2><center>© COPYRIGHT 2010 STMicroelectronics</center></h2> */ /* Includes ------------------------------------------------------------------*/ #include "stm32l152_eval.h" #include "stm32l1xx_spi.h" #include "stm32l1xx_i2c.h" /** @addtogroup Utilities * @{ */ /** @addtogroup STM32_EVAL * @{ */ /** @addtogroup STM32L152_EVAL * @{ */ /** @defgroup STM32L152_EVAL_LOW_LEVEL * @brief This file provides firmware functions to manage Leds, push-buttons, * COM ports, SD card on SPI and temperature sensor (LM75) available on * STM32L152-EVAL evaluation board from STMicroelectronics. * @{ */ /** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_TypesDefinitions * @{ */ /** * @} */ /** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_Defines * @{ */ /** * @} */ /** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_Macros * @{ */ /** * @} */ /** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_Variables * @{ */ GPIO_TypeDef* GPIO_PORT[LEDn] = {LED1_GPIO_PORT, LED2_GPIO_PORT, LED3_GPIO_PORT, LED4_GPIO_PORT}; const uint16_t GPIO_PIN[LEDn] = {LED1_PIN, LED2_PIN, LED3_PIN, LED4_PIN}; const uint32_t GPIO_CLK[LEDn] = {LED1_GPIO_CLK, LED2_GPIO_CLK, LED3_GPIO_CLK, LED4_GPIO_CLK}; GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {WAKEUP_BUTTON_GPIO_PORT, TAMPER_BUTTON_GPIO_PORT, KEY_BUTTON_GPIO_PORT, RIGHT_BUTTON_GPIO_PORT, LEFT_BUTTON_GPIO_PORT, UP_BUTTON_GPIO_PORT, DOWN_BUTTON_GPIO_PORT, SEL_BUTTON_GPIO_PORT}; const uint16_t BUTTON_PIN[BUTTONn] = {WAKEUP_BUTTON_PIN, TAMPER_BUTTON_PIN, KEY_BUTTON_PIN, RIGHT_BUTTON_PIN, LEFT_BUTTON_PIN, UP_BUTTON_PIN, DOWN_BUTTON_PIN, SEL_BUTTON_PIN}; const uint32_t BUTTON_CLK[BUTTONn] = {WAKEUP_BUTTON_GPIO_CLK, TAMPER_BUTTON_GPIO_CLK, KEY_BUTTON_GPIO_CLK, RIGHT_BUTTON_GPIO_CLK, LEFT_BUTTON_GPIO_CLK, UP_BUTTON_GPIO_CLK, DOWN_BUTTON_GPIO_CLK, SEL_BUTTON_GPIO_CLK}; const uint16_t BUTTON_EXTI_LINE[BUTTONn] = {WAKEUP_BUTTON_EXTI_LINE, TAMPER_BUTTON_EXTI_LINE, KEY_BUTTON_EXTI_LINE, RIGHT_BUTTON_EXTI_LINE, LEFT_BUTTON_EXTI_LINE, UP_BUTTON_EXTI_LINE, DOWN_BUTTON_EXTI_LINE, SEL_BUTTON_EXTI_LINE}; const uint16_t BUTTON_PORT_SOURCE[BUTTONn] = {WAKEUP_BUTTON_EXTI_PORT_SOURCE, TAMPER_BUTTON_EXTI_PORT_SOURCE, KEY_BUTTON_EXTI_PORT_SOURCE, RIGHT_BUTTON_EXTI_PORT_SOURCE, LEFT_BUTTON_EXTI_PORT_SOURCE, UP_BUTTON_EXTI_PORT_SOURCE, DOWN_BUTTON_EXTI_PORT_SOURCE, SEL_BUTTON_EXTI_PORT_SOURCE}; const uint16_t BUTTON_PIN_SOURCE[BUTTONn] = {WAKEUP_BUTTON_EXTI_PIN_SOURCE, TAMPER_BUTTON_EXTI_PIN_SOURCE, KEY_BUTTON_EXTI_PIN_SOURCE, RIGHT_BUTTON_EXTI_PIN_SOURCE, LEFT_BUTTON_EXTI_PIN_SOURCE, UP_BUTTON_EXTI_PIN_SOURCE, DOWN_BUTTON_EXTI_PIN_SOURCE, SEL_BUTTON_EXTI_PIN_SOURCE}; const uint16_t BUTTON_IRQn[BUTTONn] = {WAKEUP_BUTTON_EXTI_IRQn, TAMPER_BUTTON_EXTI_IRQn, KEY_BUTTON_EXTI_IRQn, RIGHT_BUTTON_EXTI_IRQn, LEFT_BUTTON_EXTI_IRQn, UP_BUTTON_EXTI_IRQn, DOWN_BUTTON_EXTI_IRQn, SEL_BUTTON_EXTI_IRQn}; USART_TypeDef* COM_USART[COMn] = {EVAL_COM1, EVAL_COM2}; GPIO_TypeDef* COM_TX_PORT[COMn] = {EVAL_COM1_TX_GPIO_PORT, EVAL_COM2_TX_GPIO_PORT}; GPIO_TypeDef* COM_RX_PORT[COMn] = {EVAL_COM1_RX_GPIO_PORT, EVAL_COM2_RX_GPIO_PORT}; const uint32_t COM_USART_CLK[COMn] = {EVAL_COM1_CLK, EVAL_COM2_CLK}; const uint32_t COM_TX_PORT_CLK[COMn] = {EVAL_COM1_TX_GPIO_CLK, EVAL_COM2_TX_GPIO_CLK}; const uint32_t COM_RX_PORT_CLK[COMn] = {EVAL_COM1_RX_GPIO_CLK, EVAL_COM2_RX_GPIO_CLK}; const uint16_t COM_TX_PIN[COMn] = {EVAL_COM1_TX_PIN, EVAL_COM2_TX_PIN}; const uint16_t COM_RX_PIN[COMn] = {EVAL_COM1_RX_PIN, EVAL_COM2_RX_PIN}; const uint16_t COM_TX_PIN_SOURCE[COMn] = {EVAL_COM1_TX_SOURCE, EVAL_COM2_TX_SOURCE}; const uint16_t COM_RX_PIN_SOURCE[COMn] = {EVAL_COM1_RX_SOURCE, EVAL_COM2_RX_SOURCE}; const uint16_t COM_TX_AF[COMn] = {EVAL_COM1_TX_AF, EVAL_COM2_TX_AF}; const uint16_t COM_RX_AF[COMn] = {EVAL_COM1_RX_AF, EVAL_COM2_RX_AF}; /** * @} */ /** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_FunctionPrototypes * @{ */ /** * @} */ /** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_Functions * @{ */ /** * @brief Configures LED GPIO. * @param Led: Specifies the Led to be configured. * This parameter can be one of following parameters: * @arg LED1 * @arg LED2 * @arg LED3 * @arg LED4 * @retval None */ void STM_EVAL_LEDInit(Led_TypeDef Led) { GPIO_InitTypeDef GPIO_InitStructure; /* Enable the GPIO_LED Clock */ RCC_AHBPeriphClockCmd(GPIO_CLK[Led], ENABLE); /* Configure the GPIO_LED pin */ GPIO_InitStructure.GPIO_Pin = GPIO_PIN[Led]; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz; GPIO_Init(GPIO_PORT[Led], &GPIO_InitStructure); GPIO_PORT[Led]->BSRRL = GPIO_PIN[Led]; } /** * @brief Turns selected LED On. * @param Led: Specifies the Led to be set on. * This parameter can be one of following parameters: * @arg LED1 * @arg LED2 * @arg LED3 * @arg LED4 * @retval None */ void STM_EVAL_LEDOn(Led_TypeDef Led) { GPIO_PORT[Led]->BSRRH = GPIO_PIN[Led]; } /** * @brief Turns selected LED Off. * @param Led: Specifies the Led to be set off. * This parameter can be one of following parameters: * @arg LED1 * @arg LED2 * @arg LED3 * @arg LED4 * @retval None */ void STM_EVAL_LEDOff(Led_TypeDef Led) { GPIO_PORT[Led]->BSRRL = GPIO_PIN[Led]; } /** * @brief Toggles the selected LED. * @param Led: Specifies the Led to be toggled. * This parameter can be one of following parameters: * @arg LED1 * @arg LED2 * @arg LED3 * @arg LED4 * @retval None */ void STM_EVAL_LEDToggle(Led_TypeDef Led) { GPIO_PORT[Led]->ODR ^= GPIO_PIN[Led]; } /** * @brief Configures Button GPIO and EXTI Line. * @param Button: Specifies the Button to be configured. * This parameter can be one of following parameters: * @arg BUTTON_WAKEUP: Wakeup Push Button * @arg BUTTON_TAMPER: Tamper Push Button * @arg BUTTON_KEY: Key Push Button * @arg BUTTON_RIGHT: Joystick Right Push Button * @arg BUTTON_LEFT: Joystick Left Push Button * @arg BUTTON_UP: Joystick Up Push Button * @arg BUTTON_DOWN: Joystick Down Push Button * @arg BUTTON_SEL: Joystick Sel Push Button * @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 STM_EVAL_PBInit(Button_TypeDef Button, ButtonMode_TypeDef Button_Mode) { GPIO_InitTypeDef GPIO_InitStructure; EXTI_InitTypeDef EXTI_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; /* Enable the BUTTON Clock */ RCC_AHBPeriphClockCmd(BUTTON_CLK[Button], ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); /* Configure Button pin as input */ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_InitStructure.GPIO_Pin = BUTTON_PIN[Button]; GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStructure); if (Button_Mode == BUTTON_MODE_EXTI) { /* Connect Button EXTI Line to Button GPIO Pin */ SYSCFG_EXTILineConfig(BUTTON_PORT_SOURCE[Button], BUTTON_PIN_SOURCE[Button]); /* Configure Button EXTI line */ EXTI_InitStructure.EXTI_Line = BUTTON_EXTI_LINE[Button]; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; if((Button != BUTTON_WAKEUP) && (Button != BUTTON_KEY) && (Button != BUTTON_TAMPER)) { EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; } else { EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; } EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); /* Enable and set Button EXTI Interrupt to the lowest priority */ NVIC_InitStructure.NVIC_IRQChannel = BUTTON_IRQn[Button]; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } } /** * @brief Returns the selected Button state. * @param Button: Specifies the Button to be checked. * This parameter can be one of following parameters: * @arg BUTTON_WAKEUP: Wakeup Push Button * @arg BUTTON_TAMPER: Tamper Push Button * @arg BUTTON_KEY: Key Push Button * @arg BUTTON_RIGHT: Joystick Right Push Button * @arg BUTTON_LEFT: Joystick Left Push Button * @arg BUTTON_UP: Joystick Up Push Button * @arg BUTTON_DOWN: Joystick Down Push Button * @arg BUTTON_SEL: Joystick Sel Push Button * @retval The Button GPIO pin value. */ uint32_t STM_EVAL_PBGetState(Button_TypeDef Button) { return GPIO_ReadInputDataBit(BUTTON_PORT[Button], BUTTON_PIN[Button]); } /** * @brief Configures COM port. * @param COM: Specifies the COM port to be configured. * This parameter can be one of following parameters: * @arg COM1 * @arg COM2 * @param USART_InitStruct: pointer to a USART_InitTypeDef structure that * contains the configuration information for the specified USART peripheral. * @retval None */ void STM_EVAL_COMInit(COM_TypeDef COM, USART_InitTypeDef* USART_InitStruct) { GPIO_InitTypeDef GPIO_InitStructure; /* Enable GPIO clock */ RCC_AHBPeriphClockCmd(COM_TX_PORT_CLK[COM] | COM_RX_PORT_CLK[COM], ENABLE); /* Enable UART clock */ RCC_APB1PeriphClockCmd(COM_USART_CLK[COM], ENABLE); /* Connect PXx to USARTx_Tx*/ GPIO_PinAFConfig(COM_TX_PORT[COM], COM_TX_PIN_SOURCE[COM], COM_TX_AF[COM]); /* Connect PXx to USARTx_Rx*/ GPIO_PinAFConfig(COM_RX_PORT[COM], COM_RX_PIN_SOURCE[COM], COM_RX_AF[COM]); /* Configure USART Tx as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = COM_TX_PIN[COM]; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; GPIO_Init(COM_TX_PORT[COM], &GPIO_InitStructure); /* Configure USART Rx as input floating */ GPIO_InitStructure.GPIO_Pin = COM_RX_PIN[COM]; GPIO_Init(COM_RX_PORT[COM], &GPIO_InitStructure); /* USART configuration */ USART_Init(COM_USART[COM], USART_InitStruct); /* Enable USART */ USART_Cmd(COM_USART[COM], ENABLE); } /** * @brief DeInitializes the SPI interface. * @param None * @retval None */ void SD_LowLevel_DeInit(void) { GPIO_InitTypeDef GPIO_InitStructure; SPI_Cmd(SD_SPI, DISABLE); /*!< SD_SPI disable */ SPI_DeInit(SD_SPI); /*!< DeInitializes the SD_SPI */ /*!< SD_SPI Periph clock disable */ RCC_APB1PeriphClockCmd(SD_SPI_CLK, DISABLE); /*!< Configure SD_SPI pins: SCK */ GPIO_InitStructure.GPIO_Pin = SD_SPI_SCK_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(SD_SPI_SCK_GPIO_PORT, &GPIO_InitStructure); /*!< Configure SD_SPI pins: MISO */ GPIO_InitStructure.GPIO_Pin = SD_SPI_MISO_PIN; GPIO_Init(SD_SPI_MISO_GPIO_PORT, &GPIO_InitStructure); /*!< Configure SD_SPI pins: MOSI */ GPIO_InitStructure.GPIO_Pin = SD_SPI_MOSI_PIN; GPIO_Init(SD_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure); /*!< Configure SD_SPI_CS_PIN pin: SD Card CS pin */ GPIO_InitStructure.GPIO_Pin = SD_CS_PIN; GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStructure); /*!< Configure SD_SPI_DETECT_PIN pin: SD Card detect pin */ GPIO_InitStructure.GPIO_Pin = SD_DETECT_PIN; GPIO_Init(SD_DETECT_GPIO_PORT, &GPIO_InitStructure); } /** * @brief Initializes the SD Card and put it into StandBy State (Ready for * data transfer). * @param None * @retval None */ void SD_LowLevel_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; SPI_InitTypeDef SPI_InitStructure; /*!< SD_SPI_CS_GPIO, SD_SPI_MOSI_GPIO, SD_SPI_MISO_GPIO, SD_SPI_DETECT_GPIO and SD_SPI_SCK_GPIO Periph clock enable */ RCC_AHBPeriphClockCmd(SD_CS_GPIO_CLK | SD_SPI_MOSI_GPIO_CLK | SD_SPI_MISO_GPIO_CLK | SD_SPI_SCK_GPIO_CLK | SD_DETECT_GPIO_CLK, ENABLE); /*!< SD_SPI Periph clock enable */ RCC_APB1PeriphClockCmd(SD_SPI_CLK, ENABLE); /*!< Configure SD_SPI pins: SCK */ GPIO_InitStructure.GPIO_Pin = SD_SPI_SCK_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; GPIO_Init(SD_SPI_SCK_GPIO_PORT, &GPIO_InitStructure); /*!< Configure SD_SPI pins: MISO */ GPIO_InitStructure.GPIO_Pin = SD_SPI_MISO_PIN; GPIO_Init(SD_SPI_MISO_GPIO_PORT, &GPIO_InitStructure); /*!< Configure SD_SPI pins: MOSI */ GPIO_InitStructure.GPIO_Pin = SD_SPI_MOSI_PIN; GPIO_Init(SD_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure); /*!< Configure SD_SPI_CS_PIN pin: SD Card CS pin */ GPIO_InitStructure.GPIO_Pin = SD_CS_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz; GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStructure); /*!< Configure SD_SPI_DETECT_PIN pin: SD Card detect pin */ GPIO_InitStructure.GPIO_Pin = SD_DETECT_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; GPIO_Init(SD_DETECT_GPIO_PORT, &GPIO_InitStructure); /* Connect PXx to SD_SPI_SCK */ GPIO_PinAFConfig(SD_SPI_SCK_GPIO_PORT, SD_SPI_SCK_SOURCE, SD_SPI_SCK_AF); /* Connect PXx to SD_SPI_MISO */ GPIO_PinAFConfig(SD_SPI_MISO_GPIO_PORT, SD_SPI_MISO_SOURCE, SD_SPI_MISO_AF); /* Connect PXx to SD_SPI_MOSI */ GPIO_PinAFConfig(SD_SPI_MOSI_GPIO_PORT, SD_SPI_MOSI_SOURCE, SD_SPI_MOSI_AF); /*!< SD_SPI Config */ SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; SPI_InitStructure.SPI_Mode = SPI_Mode_Master; SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2; SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; SPI_InitStructure.SPI_CRCPolynomial = 7; SPI_Init(SD_SPI, &SPI_InitStructure); SPI_Cmd(SD_SPI, ENABLE); /*!< SD_SPI enable */ } /** * @brief DeInitializes the LM75_I2C. * @param None * @retval None */ void LM75_LowLevel_DeInit(void) { GPIO_InitTypeDef GPIO_InitStructure; /*!< Disable LM75_I2C */ I2C_Cmd(LM75_I2C, DISABLE); /*!< DeInitializes the LM75_I2C */ I2C_DeInit(LM75_I2C); /*!< LM75_I2C Periph clock disable */ RCC_APB1PeriphClockCmd(LM75_I2C_CLK, DISABLE); /*!< Configure LM75_I2C pins: SCL */ GPIO_InitStructure.GPIO_Pin = LM75_I2C_SCL_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(LM75_I2C_SCL_GPIO_PORT, &GPIO_InitStructure); /*!< Configure LM75_I2C pins: SDA */ GPIO_InitStructure.GPIO_Pin = LM75_I2C_SDA_PIN; GPIO_Init(LM75_I2C_SDA_GPIO_PORT, &GPIO_InitStructure); /*!< Configure LM75_I2C pin: SMBUS ALERT */ GPIO_InitStructure.GPIO_Pin = LM75_I2C_SMBUSALERT_PIN; GPIO_Init(LM75_I2C_SMBUSALERT_GPIO_PORT, &GPIO_InitStructure); } /** * @brief Initializes the LM75_I2C. * @param None * @retval None */ void LM75_LowLevel_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; /*!< LM75_I2C Periph clock enable */ RCC_APB1PeriphClockCmd(LM75_I2C_CLK, ENABLE); /*!< LM75_I2C_SCL_GPIO_CLK, LM75_I2C_SDA_GPIO_CLK and LM75_I2C_SMBUSALERT_GPIO_CLK Periph clock enable */ RCC_AHBPeriphClockCmd(LM75_I2C_SCL_GPIO_CLK | LM75_I2C_SDA_GPIO_CLK | LM75_I2C_SMBUSALERT_GPIO_CLK, ENABLE); /*!< Configure LM75_I2C pins: SCL */ GPIO_InitStructure.GPIO_Pin = LM75_I2C_SCL_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_OD; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(LM75_I2C_SCL_GPIO_PORT, &GPIO_InitStructure); /*!< Configure LM75_I2C pins: SDA */ GPIO_InitStructure.GPIO_Pin = LM75_I2C_SDA_PIN; GPIO_Init(LM75_I2C_SDA_GPIO_PORT, &GPIO_InitStructure); /*!< Configure LM75_I2C pin: SMBUS ALERT */ GPIO_InitStructure.GPIO_Pin = LM75_I2C_SMBUSALERT_PIN; GPIO_Init(LM75_I2C_SMBUSALERT_GPIO_PORT, &GPIO_InitStructure); /* Connect PXx to I2C_SCL */ GPIO_PinAFConfig(LM75_I2C_SCL_GPIO_PORT, LM75_I2C_SCL_SOURCE, LM75_I2C_SCL_AF); /* Connect PXx to I2C_SDA */ GPIO_PinAFConfig(LM75_I2C_SDA_GPIO_PORT, LM75_I2C_SDA_SOURCE, LM75_I2C_SDA_AF); /* Connect PXx to I2C_SMBUSALER */ GPIO_PinAFConfig(LM75_I2C_SMBUSALERT_GPIO_PORT, LM75_I2C_SMBUSALERT_SOURCE, LM75_I2C_SMBUSALERT_AF); } /** * @} */ /** * @} */ /** * @} */ /** * @} */ /** * @} */ /******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/
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