/********************************************************************************* @file stm32f10x_gpio.c* @author MCD Application Team* @version V3.4.0* @date 10/15/2010* @brief This file provides all the GPIO firmware functions.******************************************************************************* @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 "stm32f10x_gpio.h"#include "stm32f10x_rcc.h"/** @addtogroup STM32F10x_StdPeriph_Driver* @{*//** @defgroup GPIO* @brief GPIO driver modules* @{*//** @defgroup GPIO_Private_TypesDefinitions* @{*//*** @}*//** @defgroup GPIO_Private_Defines* @{*//* ------------ RCC registers bit address in the alias region ----------------*/#define AFIO_OFFSET (AFIO_BASE - PERIPH_BASE)/* --- EVENTCR Register -----*//* Alias word address of EVOE bit */#define EVCR_OFFSET (AFIO_OFFSET + 0x00)#define EVOE_BitNumber ((uint8_t)0x07)#define EVCR_EVOE_BB (PERIPH_BB_BASE + (EVCR_OFFSET * 32) + (EVOE_BitNumber * 4))/* --- MAPR Register ---*//* Alias word address of MII_RMII_SEL bit */#define MAPR_OFFSET (AFIO_OFFSET + 0x04)#define MII_RMII_SEL_BitNumber ((u8)0x17)#define MAPR_MII_RMII_SEL_BB (PERIPH_BB_BASE + (MAPR_OFFSET * 32) + (MII_RMII_SEL_BitNumber * 4))#define EVCR_PORTPINCONFIG_MASK ((uint16_t)0xFF80)#define LSB_MASK ((uint16_t)0xFFFF)#define DBGAFR_POSITION_MASK ((uint32_t)0x000F0000)#define DBGAFR_SWJCFG_MASK ((uint32_t)0xF0FFFFFF)#define DBGAFR_LOCATION_MASK ((uint32_t)0x00200000)#define DBGAFR_NUMBITS_MASK ((uint32_t)0x00100000)/*** @}*//** @defgroup GPIO_Private_Macros* @{*//*** @}*//** @defgroup GPIO_Private_Variables* @{*//*** @}*//** @defgroup GPIO_Private_FunctionPrototypes* @{*//*** @}*//** @defgroup GPIO_Private_Functions* @{*//*** @brief Deinitializes the GPIOx peripheral registers to their default reset values.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @retval None*/void GPIO_DeInit(GPIO_TypeDef* GPIOx){/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));if (GPIOx == GPIOA){RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, ENABLE);RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, DISABLE);}else if (GPIOx == GPIOB){RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, ENABLE);RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, DISABLE);}else if (GPIOx == GPIOC){RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, ENABLE);RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, DISABLE);}else if (GPIOx == GPIOD){RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, ENABLE);RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, DISABLE);}else if (GPIOx == GPIOE){RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, ENABLE);RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, DISABLE);}else if (GPIOx == GPIOF){RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOF, ENABLE);RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOF, DISABLE);}else{if (GPIOx == GPIOG){RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOG, ENABLE);RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOG, DISABLE);}}}/*** @brief Deinitializes the Alternate Functions (remap, event control* and EXTI configuration) registers to their default reset values.* @param None* @retval None*/void GPIO_AFIODeInit(void){RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, ENABLE);RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, DISABLE);}/*** @brief Initializes the GPIOx peripheral according to the specified* parameters in the GPIO_InitStruct.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @param GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that* contains the configuration information for the specified GPIO peripheral.* @retval None*/void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct){uint32_t currentmode = 0x00, currentpin = 0x00, pinpos = 0x00, pos = 0x00;uint32_t tmpreg = 0x00, pinmask = 0x00;/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));assert_param(IS_GPIO_MODE(GPIO_InitStruct->GPIO_Mode));assert_param(IS_GPIO_PIN(GPIO_InitStruct->GPIO_Pin));/*---------------------------- GPIO Mode Configuration -----------------------*/currentmode = ((uint32_t)GPIO_InitStruct->GPIO_Mode) & ((uint32_t)0x0F);if ((((uint32_t)GPIO_InitStruct->GPIO_Mode) & ((uint32_t)0x10)) != 0x00){/* Check the parameters */assert_param(IS_GPIO_SPEED(GPIO_InitStruct->GPIO_Speed));/* Output mode */currentmode |= (uint32_t)GPIO_InitStruct->GPIO_Speed;}/*---------------------------- GPIO CRL Configuration ------------------------*//* Configure the eight low port pins */if (((uint32_t)GPIO_InitStruct->GPIO_Pin & ((uint32_t)0x00FF)) != 0x00){tmpreg = GPIOx->CRL;for (pinpos = 0x00; pinpos < 0x08; pinpos++){pos = ((uint32_t)0x01) << pinpos;/* Get the port pins position */currentpin = (GPIO_InitStruct->GPIO_Pin) & pos;if (currentpin == pos){pos = pinpos << 2;/* Clear the corresponding low control register bits */pinmask = ((uint32_t)0x0F) << pos;tmpreg &= ~pinmask;/* Write the mode configuration in the corresponding bits */tmpreg |= (currentmode << pos);/* Reset the corresponding ODR bit */if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD){GPIOx->BRR = (((uint32_t)0x01) << pinpos);}else{/* Set the corresponding ODR bit */if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU){GPIOx->BSRR = (((uint32_t)0x01) << pinpos);}}}}GPIOx->CRL = tmpreg;}/*---------------------------- GPIO CRH Configuration ------------------------*//* Configure the eight high port pins */if (GPIO_InitStruct->GPIO_Pin > 0x00FF){tmpreg = GPIOx->CRH;for (pinpos = 0x00; pinpos < 0x08; pinpos++){pos = (((uint32_t)0x01) << (pinpos + 0x08));/* Get the port pins position */currentpin = ((GPIO_InitStruct->GPIO_Pin) & pos);if (currentpin == pos){pos = pinpos << 2;/* Clear the corresponding high control register bits */pinmask = ((uint32_t)0x0F) << pos;tmpreg &= ~pinmask;/* Write the mode configuration in the corresponding bits */tmpreg |= (currentmode << pos);/* Reset the corresponding ODR bit */if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD){GPIOx->BRR = (((uint32_t)0x01) << (pinpos + 0x08));}/* Set the corresponding ODR bit */if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU){GPIOx->BSRR = (((uint32_t)0x01) << (pinpos + 0x08));}}}GPIOx->CRH = tmpreg;}}/*** @brief Fills each GPIO_InitStruct member with its default value.* @param GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure which will* be initialized.* @retval None*/void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct){/* Reset GPIO init structure parameters values */GPIO_InitStruct->GPIO_Pin = GPIO_Pin_All;GPIO_InitStruct->GPIO_Speed = GPIO_Speed_2MHz;GPIO_InitStruct->GPIO_Mode = GPIO_Mode_IN_FLOATING;}/*** @brief Reads the specified input port pin.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @param GPIO_Pin: specifies the port bit to read.* This parameter can be GPIO_Pin_x where x can be (0..15).* @retval The input port pin value.*/uint8_t GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin){uint8_t bitstatus = 0x00;/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));assert_param(IS_GET_GPIO_PIN(GPIO_Pin));if ((GPIOx->IDR & GPIO_Pin) != (uint32_t)Bit_RESET){bitstatus = (uint8_t)Bit_SET;}else{bitstatus = (uint8_t)Bit_RESET;}return bitstatus;}/*** @brief Reads the specified GPIO input data port.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @retval GPIO input data port value.*/uint16_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx){/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));return ((uint16_t)GPIOx->IDR);}/*** @brief Reads the specified output data port bit.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @param GPIO_Pin: specifies the port bit to read.* This parameter can be GPIO_Pin_x where x can be (0..15).* @retval The output port pin value.*/uint8_t GPIO_ReadOutputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin){uint8_t bitstatus = 0x00;/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));assert_param(IS_GET_GPIO_PIN(GPIO_Pin));if ((GPIOx->ODR & GPIO_Pin) != (uint32_t)Bit_RESET){bitstatus = (uint8_t)Bit_SET;}else{bitstatus = (uint8_t)Bit_RESET;}return bitstatus;}/*** @brief Reads the specified GPIO output data port.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @retval GPIO output data port value.*/uint16_t GPIO_ReadOutputData(GPIO_TypeDef* GPIOx){/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));return ((uint16_t)GPIOx->ODR);}/*** @brief Sets the selected data port bits.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @param GPIO_Pin: specifies the port bits to be written.* This parameter can be any combination of GPIO_Pin_x where x can be (0..15).* @retval None*/void GPIO_SetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin){/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));assert_param(IS_GPIO_PIN(GPIO_Pin));GPIOx->BSRR = GPIO_Pin;}/*** @brief Clears the selected data port bits.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @param GPIO_Pin: specifies the port bits to be written.* This parameter can be any combination of GPIO_Pin_x where x can be (0..15).* @retval None*/void GPIO_ResetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin){/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));assert_param(IS_GPIO_PIN(GPIO_Pin));GPIOx->BRR = GPIO_Pin;}/*** @brief Sets or clears the selected data port bit.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @param GPIO_Pin: specifies the port bit to be written.* This parameter can be one of GPIO_Pin_x where x can be (0..15).* @param BitVal: specifies the value to be written to the selected bit.* This parameter can be one of the BitAction enum values:* @arg Bit_RESET: to clear the port pin* @arg Bit_SET: to set the port pin* @retval None*/void GPIO_WriteBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, BitAction BitVal){/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));assert_param(IS_GET_GPIO_PIN(GPIO_Pin));assert_param(IS_GPIO_BIT_ACTION(BitVal));if (BitVal != Bit_RESET){GPIOx->BSRR = GPIO_Pin;}else{GPIOx->BRR = GPIO_Pin;}}/*** @brief Writes data to the specified GPIO data port.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @param PortVal: specifies the value to be written to the port output data register.* @retval None*/void GPIO_Write(GPIO_TypeDef* GPIOx, uint16_t PortVal){/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));GPIOx->ODR = PortVal;}/*** @brief Locks GPIO Pins configuration registers.* @param GPIOx: where x can be (A..G) to select the GPIO peripheral.* @param GPIO_Pin: specifies the port bit to be written.* This parameter can be any combination of GPIO_Pin_x where x can be (0..15).* @retval None*/void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin){uint32_t tmp = 0x00010000;/* Check the parameters */assert_param(IS_GPIO_ALL_PERIPH(GPIOx));assert_param(IS_GPIO_PIN(GPIO_Pin));tmp |= GPIO_Pin;/* Set LCKK bit */GPIOx->LCKR = tmp;/* Reset LCKK bit */GPIOx->LCKR = GPIO_Pin;/* Set LCKK bit */GPIOx->LCKR = tmp;/* Read LCKK bit*/tmp = GPIOx->LCKR;/* Read LCKK bit*/tmp = GPIOx->LCKR;}/*** @brief Selects the GPIO pin used as Event output.* @param GPIO_PortSource: selects the GPIO port to be used as source* for Event output.* This parameter can be GPIO_PortSourceGPIOx where x can be (A..E).* @param GPIO_PinSource: specifies the pin for the Event output.* This parameter can be GPIO_PinSourcex where x can be (0..15).* @retval None*/void GPIO_EventOutputConfig(uint8_t GPIO_PortSource, uint8_t GPIO_PinSource){uint32_t tmpreg = 0x00;/* Check the parameters */assert_param(IS_GPIO_EVENTOUT_PORT_SOURCE(GPIO_PortSource));assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));tmpreg = AFIO->EVCR;/* Clear the PORT[6:4] and PIN[3:0] bits */tmpreg &= EVCR_PORTPINCONFIG_MASK;tmpreg |= (uint32_t)GPIO_PortSource << 0x04;tmpreg |= GPIO_PinSource;AFIO->EVCR = tmpreg;}/*** @brief Enables or disables the Event Output.* @param NewState: new state of the Event output.* This parameter can be: ENABLE or DISABLE.* @retval None*/void GPIO_EventOutputCmd(FunctionalState NewState){/* Check the parameters */assert_param(IS_FUNCTIONAL_STATE(NewState));*(__IO uint32_t *) EVCR_EVOE_BB = (uint32_t)NewState;}/*** @brief Changes the mapping of the specified pin.* @param GPIO_Remap: selects the pin to remap.* This parameter can be one of the following values:* @arg GPIO_Remap_SPI1 : SPI1 Alternate Function mapping* @arg GPIO_Remap_I2C1 : I2C1 Alternate Function mapping* @arg GPIO_Remap_USART1 : USART1 Alternate Function mapping* @arg GPIO_Remap_USART2 : USART2 Alternate Function mapping* @arg GPIO_PartialRemap_USART3 : USART3 Partial Alternate Function mapping* @arg GPIO_FullRemap_USART3 : USART3 Full Alternate Function mapping* @arg GPIO_PartialRemap_TIM1 : TIM1 Partial Alternate Function mapping* @arg GPIO_FullRemap_TIM1 : TIM1 Full Alternate Function mapping* @arg GPIO_PartialRemap1_TIM2 : TIM2 Partial1 Alternate Function mapping* @arg GPIO_PartialRemap2_TIM2 : TIM2 Partial2 Alternate Function mapping* @arg GPIO_FullRemap_TIM2 : TIM2 Full Alternate Function mapping* @arg GPIO_PartialRemap_TIM3 : TIM3 Partial Alternate Function mapping* @arg GPIO_FullRemap_TIM3 : TIM3 Full Alternate Function mapping* @arg GPIO_Remap_TIM4 : TIM4 Alternate Function mapping* @arg GPIO_Remap1_CAN1 : CAN1 Alternate Function mapping* @arg GPIO_Remap2_CAN1 : CAN1 Alternate Function mapping* @arg GPIO_Remap_PD01 : PD01 Alternate Function mapping* @arg GPIO_Remap_TIM5CH4_LSI : LSI connected to TIM5 Channel4 input capture for calibration* @arg GPIO_Remap_ADC1_ETRGINJ : ADC1 External Trigger Injected Conversion remapping* @arg GPIO_Remap_ADC1_ETRGREG : ADC1 External Trigger Regular Conversion remapping* @arg GPIO_Remap_ADC2_ETRGINJ : ADC2 External Trigger Injected Conversion remapping* @arg GPIO_Remap_ADC2_ETRGREG : ADC2 External Trigger Regular Conversion remapping* @arg GPIO_Remap_ETH : Ethernet remapping (only for Connectivity line devices)* @arg GPIO_Remap_CAN2 : CAN2 remapping (only for Connectivity line devices)* @arg GPIO_Remap_SWJ_NoJTRST : Full SWJ Enabled (JTAG-DP + SW-DP) but without JTRST* @arg GPIO_Remap_SWJ_JTAGDisable : JTAG-DP Disabled and SW-DP Enabled* @arg GPIO_Remap_SWJ_Disable : Full SWJ Disabled (JTAG-DP + SW-DP)* @arg GPIO_Remap_SPI3 : SPI3/I2S3 Alternate Function mapping (only for Connectivity line devices)* @arg GPIO_Remap_TIM2ITR1_PTP_SOF : Ethernet PTP output or USB OTG SOF (Start of Frame) connected* to TIM2 Internal Trigger 1 for calibration (only for Connectivity line devices)* If the GPIO_Remap_TIM2ITR1_PTP_SOF is enabled the TIM2 ITR1 is connected to* Ethernet PTP output. When Reset TIM2 ITR1 is connected to USB OTG SOF output.* @arg GPIO_Remap_PTP_PPS : Ethernet MAC PPS_PTS output on PB05 (only for Connectivity line devices)* @arg GPIO_Remap_TIM15 : TIM15 Alternate Function mapping (only for Value line devices)* @arg GPIO_Remap_TIM16 : TIM16 Alternate Function mapping (only for Value line devices)* @arg GPIO_Remap_TIM17 : TIM17 Alternate Function mapping (only for Value line devices)* @arg GPIO_Remap_CEC : CEC Alternate Function mapping (only for Value line devices)* @arg GPIO_Remap_TIM1_DMA : TIM1 DMA requests mapping (only for Value line devices)* @arg GPIO_Remap_TIM9 : TIM9 Alternate Function mapping (only for XL-density devices)* @arg GPIO_Remap_TIM10 : TIM10 Alternate Function mapping (only for XL-density devices)* @arg GPIO_Remap_TIM11 : TIM11 Alternate Function mapping (only for XL-density devices)* @arg GPIO_Remap_TIM13 : TIM13 Alternate Function mapping (only for High density Value line and XL-density devices)* @arg GPIO_Remap_TIM14 : TIM14 Alternate Function mapping (only for High density Value line and XL-density devices)* @arg GPIO_Remap_FSMC_NADV : FSMC_NADV Alternate Function mapping (only for High density Value line and XL-density devices)* @arg GPIO_Remap_TIM67_DAC_DMA : TIM6/TIM7 and DAC DMA requests remapping (only for High density Value line devices)* @arg GPIO_Remap_TIM12 : TIM12 Alternate Function mapping (only for High density Value line devices)* @arg GPIO_Remap_MISC : Miscellaneous Remap (DMA2 Channel5 Position and DAC Trigger remapping,* only for High density Value line devices)* @param NewState: new state of the port pin remapping.* This parameter can be: ENABLE or DISABLE.* @retval None*/void GPIO_PinRemapConfig(uint32_t GPIO_Remap, FunctionalState NewState){uint32_t tmp = 0x00, tmp1 = 0x00, tmpreg = 0x00, tmpmask = 0x00;/* Check the parameters */assert_param(IS_GPIO_REMAP(GPIO_Remap));assert_param(IS_FUNCTIONAL_STATE(NewState));if((GPIO_Remap & 0x80000000) == 0x80000000){tmpreg = AFIO->MAPR2;}else{tmpreg = AFIO->MAPR;}tmpmask = (GPIO_Remap & DBGAFR_POSITION_MASK) >> 0x10;tmp = GPIO_Remap & LSB_MASK;if ((GPIO_Remap & (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)) == (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)){tmpreg &= DBGAFR_SWJCFG_MASK;AFIO->MAPR &= DBGAFR_SWJCFG_MASK;}else if ((GPIO_Remap & DBGAFR_NUMBITS_MASK) == DBGAFR_NUMBITS_MASK){tmp1 = ((uint32_t)0x03) << tmpmask;tmpreg &= ~tmp1;tmpreg |= ~DBGAFR_SWJCFG_MASK;}else{tmpreg &= ~(tmp << ((GPIO_Remap >> 0x15)*0x10));tmpreg |= ~DBGAFR_SWJCFG_MASK;}if (NewState != DISABLE){tmpreg |= (tmp << ((GPIO_Remap >> 0x15)*0x10));}if((GPIO_Remap & 0x80000000) == 0x80000000){AFIO->MAPR2 = tmpreg;}else{AFIO->MAPR = tmpreg;}}/*** @brief Selects the GPIO pin used as EXTI Line.* @param GPIO_PortSource: selects the GPIO port to be used as source for EXTI lines.* This parameter can be GPIO_PortSourceGPIOx where x can be (A..G).* @param GPIO_PinSource: specifies the EXTI line to be configured.* This parameter can be GPIO_PinSourcex where x can be (0..15).* @retval None*/void GPIO_EXTILineConfig(uint8_t GPIO_PortSource, uint8_t GPIO_PinSource){uint32_t tmp = 0x00;/* Check the parameters */assert_param(IS_GPIO_EXTI_PORT_SOURCE(GPIO_PortSource));assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));tmp = ((uint32_t)0x0F) << (0x04 * (GPIO_PinSource & (uint8_t)0x03));AFIO->EXTICR[GPIO_PinSource >> 0x02] &= ~tmp;AFIO->EXTICR[GPIO_PinSource >> 0x02] |= (((uint32_t)GPIO_PortSource) << (0x04 * (GPIO_PinSource & (uint8_t)0x03)));}/*** @brief Selects the Ethernet media interface.* @note This function applies only to STM32 Connectivity line devices.* @param GPIO_ETH_MediaInterface: specifies the Media Interface mode.* This parameter can be one of the following values:* @arg GPIO_ETH_MediaInterface_MII: MII mode* @arg GPIO_ETH_MediaInterface_RMII: RMII mode* @retval None*/void GPIO_ETH_MediaInterfaceConfig(uint32_t GPIO_ETH_MediaInterface){assert_param(IS_GPIO_ETH_MEDIA_INTERFACE(GPIO_ETH_MediaInterface));/* Configure MII_RMII selection bit */*(__IO uint32_t *) MAPR_MII_RMII_SEL_BB = GPIO_ETH_MediaInterface;}/*** @}*//*** @}*//*** @}*//******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/