2 ******************************************************************************
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3 * @file stm32f10x_gpio.c
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4 * @author MCD Application Team
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6 * @date 11-March-2011
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7 * @brief This file provides all the GPIO firmware functions.
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8 ******************************************************************************
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11 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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12 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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13 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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14 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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15 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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16 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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18 * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
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19 ******************************************************************************
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22 /* Includes ------------------------------------------------------------------*/
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23 #include "stm32f10x_gpio.h"
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24 #include "stm32f10x_rcc.h"
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26 /** @addtogroup STM32F10x_StdPeriph_Driver
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31 * @brief GPIO driver modules
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35 /** @defgroup GPIO_Private_TypesDefinitions
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43 /** @defgroup GPIO_Private_Defines
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47 /* ------------ RCC registers bit address in the alias region ----------------*/
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48 #define AFIO_OFFSET (AFIO_BASE - PERIPH_BASE)
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50 /* --- EVENTCR Register -----*/
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52 /* Alias word address of EVOE bit */
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53 #define EVCR_OFFSET (AFIO_OFFSET + 0x00)
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54 #define EVOE_BitNumber ((uint8_t)0x07)
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55 #define EVCR_EVOE_BB (PERIPH_BB_BASE + (EVCR_OFFSET * 32) + (EVOE_BitNumber * 4))
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58 /* --- MAPR Register ---*/
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59 /* Alias word address of MII_RMII_SEL bit */
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60 #define MAPR_OFFSET (AFIO_OFFSET + 0x04)
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61 #define MII_RMII_SEL_BitNumber ((u8)0x17)
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62 #define MAPR_MII_RMII_SEL_BB (PERIPH_BB_BASE + (MAPR_OFFSET * 32) + (MII_RMII_SEL_BitNumber * 4))
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65 #define EVCR_PORTPINCONFIG_MASK ((uint16_t)0xFF80)
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66 #define LSB_MASK ((uint16_t)0xFFFF)
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67 #define DBGAFR_POSITION_MASK ((uint32_t)0x000F0000)
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68 #define DBGAFR_SWJCFG_MASK ((uint32_t)0xF0FFFFFF)
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69 #define DBGAFR_LOCATION_MASK ((uint32_t)0x00200000)
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70 #define DBGAFR_NUMBITS_MASK ((uint32_t)0x00100000)
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75 /** @defgroup GPIO_Private_Macros
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83 /** @defgroup GPIO_Private_Variables
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91 /** @defgroup GPIO_Private_FunctionPrototypes
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99 /** @defgroup GPIO_Private_Functions
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104 * @brief Deinitializes the GPIOx peripheral registers to their default reset values.
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105 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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108 void GPIO_DeInit(GPIO_TypeDef* GPIOx)
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110 /* Check the parameters */
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111 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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113 if (GPIOx == GPIOA)
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115 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, ENABLE);
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116 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, DISABLE);
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118 else if (GPIOx == GPIOB)
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120 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, ENABLE);
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121 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, DISABLE);
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123 else if (GPIOx == GPIOC)
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125 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, ENABLE);
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126 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, DISABLE);
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128 else if (GPIOx == GPIOD)
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130 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, ENABLE);
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131 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, DISABLE);
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133 else if (GPIOx == GPIOE)
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135 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, ENABLE);
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136 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, DISABLE);
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138 else if (GPIOx == GPIOF)
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140 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOF, ENABLE);
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141 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOF, DISABLE);
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145 if (GPIOx == GPIOG)
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147 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOG, ENABLE);
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148 RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOG, DISABLE);
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154 * @brief Deinitializes the Alternate Functions (remap, event control
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155 * and EXTI configuration) registers to their default reset values.
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159 void GPIO_AFIODeInit(void)
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161 RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, ENABLE);
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162 RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, DISABLE);
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166 * @brief Initializes the GPIOx peripheral according to the specified
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167 * parameters in the GPIO_InitStruct.
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168 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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169 * @param GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that
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170 * contains the configuration information for the specified GPIO peripheral.
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173 void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct)
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175 uint32_t currentmode = 0x00, currentpin = 0x00, pinpos = 0x00, pos = 0x00;
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176 uint32_t tmpreg = 0x00, pinmask = 0x00;
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177 /* Check the parameters */
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178 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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179 assert_param(IS_GPIO_MODE(GPIO_InitStruct->GPIO_Mode));
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180 assert_param(IS_GPIO_PIN(GPIO_InitStruct->GPIO_Pin));
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182 /*---------------------------- GPIO Mode Configuration -----------------------*/
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183 currentmode = ((uint32_t)GPIO_InitStruct->GPIO_Mode) & ((uint32_t)0x0F);
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184 if ((((uint32_t)GPIO_InitStruct->GPIO_Mode) & ((uint32_t)0x10)) != 0x00)
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186 /* Check the parameters */
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187 assert_param(IS_GPIO_SPEED(GPIO_InitStruct->GPIO_Speed));
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189 currentmode |= (uint32_t)GPIO_InitStruct->GPIO_Speed;
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191 /*---------------------------- GPIO CRL Configuration ------------------------*/
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192 /* Configure the eight low port pins */
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193 if (((uint32_t)GPIO_InitStruct->GPIO_Pin & ((uint32_t)0x00FF)) != 0x00)
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195 tmpreg = GPIOx->CRL;
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196 for (pinpos = 0x00; pinpos < 0x08; pinpos++)
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198 pos = ((uint32_t)0x01) << pinpos;
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199 /* Get the port pins position */
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200 currentpin = (GPIO_InitStruct->GPIO_Pin) & pos;
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201 if (currentpin == pos)
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204 /* Clear the corresponding low control register bits */
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205 pinmask = ((uint32_t)0x0F) << pos;
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206 tmpreg &= ~pinmask;
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207 /* Write the mode configuration in the corresponding bits */
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208 tmpreg |= (currentmode << pos);
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209 /* Reset the corresponding ODR bit */
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210 if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
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212 GPIOx->BRR = (((uint32_t)0x01) << pinpos);
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216 /* Set the corresponding ODR bit */
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217 if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
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219 GPIOx->BSRR = (((uint32_t)0x01) << pinpos);
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224 GPIOx->CRL = tmpreg;
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226 /*---------------------------- GPIO CRH Configuration ------------------------*/
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227 /* Configure the eight high port pins */
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228 if (GPIO_InitStruct->GPIO_Pin > 0x00FF)
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230 tmpreg = GPIOx->CRH;
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231 for (pinpos = 0x00; pinpos < 0x08; pinpos++)
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233 pos = (((uint32_t)0x01) << (pinpos + 0x08));
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234 /* Get the port pins position */
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235 currentpin = ((GPIO_InitStruct->GPIO_Pin) & pos);
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236 if (currentpin == pos)
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239 /* Clear the corresponding high control register bits */
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240 pinmask = ((uint32_t)0x0F) << pos;
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241 tmpreg &= ~pinmask;
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242 /* Write the mode configuration in the corresponding bits */
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243 tmpreg |= (currentmode << pos);
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244 /* Reset the corresponding ODR bit */
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245 if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
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247 GPIOx->BRR = (((uint32_t)0x01) << (pinpos + 0x08));
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249 /* Set the corresponding ODR bit */
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250 if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
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252 GPIOx->BSRR = (((uint32_t)0x01) << (pinpos + 0x08));
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256 GPIOx->CRH = tmpreg;
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261 * @brief Fills each GPIO_InitStruct member with its default value.
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262 * @param GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure which will
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266 void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct)
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268 /* Reset GPIO init structure parameters values */
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269 GPIO_InitStruct->GPIO_Pin = GPIO_Pin_All;
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270 GPIO_InitStruct->GPIO_Speed = GPIO_Speed_2MHz;
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271 GPIO_InitStruct->GPIO_Mode = GPIO_Mode_IN_FLOATING;
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275 * @brief Reads the specified input port pin.
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276 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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277 * @param GPIO_Pin: specifies the port bit to read.
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278 * This parameter can be GPIO_Pin_x where x can be (0..15).
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279 * @retval The input port pin value.
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281 uint8_t GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
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283 uint8_t bitstatus = 0x00;
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285 /* Check the parameters */
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286 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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287 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
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289 if ((GPIOx->IDR & GPIO_Pin) != (uint32_t)Bit_RESET)
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291 bitstatus = (uint8_t)Bit_SET;
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295 bitstatus = (uint8_t)Bit_RESET;
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301 * @brief Reads the specified GPIO input data port.
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302 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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303 * @retval GPIO input data port value.
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305 uint16_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx)
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307 /* Check the parameters */
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308 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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310 return ((uint16_t)GPIOx->IDR);
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314 * @brief Reads the specified output data port bit.
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315 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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316 * @param GPIO_Pin: specifies the port bit to read.
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317 * This parameter can be GPIO_Pin_x where x can be (0..15).
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318 * @retval The output port pin value.
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320 uint8_t GPIO_ReadOutputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
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322 uint8_t bitstatus = 0x00;
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323 /* Check the parameters */
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324 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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325 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
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327 if ((GPIOx->ODR & GPIO_Pin) != (uint32_t)Bit_RESET)
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329 bitstatus = (uint8_t)Bit_SET;
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333 bitstatus = (uint8_t)Bit_RESET;
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339 * @brief Reads the specified GPIO output data port.
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340 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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341 * @retval GPIO output data port value.
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343 uint16_t GPIO_ReadOutputData(GPIO_TypeDef* GPIOx)
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345 /* Check the parameters */
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346 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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348 return ((uint16_t)GPIOx->ODR);
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352 * @brief Sets the selected data port bits.
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353 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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354 * @param GPIO_Pin: specifies the port bits to be written.
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355 * This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
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358 void GPIO_SetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
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360 /* Check the parameters */
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361 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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362 assert_param(IS_GPIO_PIN(GPIO_Pin));
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364 GPIOx->BSRR = GPIO_Pin;
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368 * @brief Clears the selected data port bits.
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369 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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370 * @param GPIO_Pin: specifies the port bits to be written.
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371 * This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
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374 void GPIO_ResetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
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376 /* Check the parameters */
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377 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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378 assert_param(IS_GPIO_PIN(GPIO_Pin));
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380 GPIOx->BRR = GPIO_Pin;
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384 * @brief Sets or clears the selected data port bit.
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385 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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386 * @param GPIO_Pin: specifies the port bit to be written.
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387 * This parameter can be one of GPIO_Pin_x where x can be (0..15).
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388 * @param BitVal: specifies the value to be written to the selected bit.
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389 * This parameter can be one of the BitAction enum values:
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390 * @arg Bit_RESET: to clear the port pin
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391 * @arg Bit_SET: to set the port pin
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394 void GPIO_WriteBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, BitAction BitVal)
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396 /* Check the parameters */
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397 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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398 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
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399 assert_param(IS_GPIO_BIT_ACTION(BitVal));
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401 if (BitVal != Bit_RESET)
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403 GPIOx->BSRR = GPIO_Pin;
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407 GPIOx->BRR = GPIO_Pin;
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412 * @brief Writes data to the specified GPIO data port.
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413 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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414 * @param PortVal: specifies the value to be written to the port output data register.
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417 void GPIO_Write(GPIO_TypeDef* GPIOx, uint16_t PortVal)
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419 /* Check the parameters */
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420 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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422 GPIOx->ODR = PortVal;
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426 * @brief Locks GPIO Pins configuration registers.
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427 * @param GPIOx: where x can be (A..G) to select the GPIO peripheral.
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428 * @param GPIO_Pin: specifies the port bit to be written.
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429 * This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
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432 void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
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434 uint32_t tmp = 0x00010000;
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436 /* Check the parameters */
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437 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
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438 assert_param(IS_GPIO_PIN(GPIO_Pin));
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443 /* Reset LCKK bit */
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444 GPIOx->LCKR = GPIO_Pin;
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454 * @brief Selects the GPIO pin used as Event output.
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455 * @param GPIO_PortSource: selects the GPIO port to be used as source
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456 * for Event output.
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457 * This parameter can be GPIO_PortSourceGPIOx where x can be (A..E).
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458 * @param GPIO_PinSource: specifies the pin for the Event output.
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459 * This parameter can be GPIO_PinSourcex where x can be (0..15).
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462 void GPIO_EventOutputConfig(uint8_t GPIO_PortSource, uint8_t GPIO_PinSource)
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464 uint32_t tmpreg = 0x00;
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465 /* Check the parameters */
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466 assert_param(IS_GPIO_EVENTOUT_PORT_SOURCE(GPIO_PortSource));
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467 assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
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469 tmpreg = AFIO->EVCR;
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470 /* Clear the PORT[6:4] and PIN[3:0] bits */
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471 tmpreg &= EVCR_PORTPINCONFIG_MASK;
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472 tmpreg |= (uint32_t)GPIO_PortSource << 0x04;
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473 tmpreg |= GPIO_PinSource;
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474 AFIO->EVCR = tmpreg;
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478 * @brief Enables or disables the Event Output.
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479 * @param NewState: new state of the Event output.
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480 * This parameter can be: ENABLE or DISABLE.
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483 void GPIO_EventOutputCmd(FunctionalState NewState)
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485 /* Check the parameters */
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486 assert_param(IS_FUNCTIONAL_STATE(NewState));
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488 *(__IO uint32_t *) EVCR_EVOE_BB = (uint32_t)NewState;
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492 * @brief Changes the mapping of the specified pin.
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493 * @param GPIO_Remap: selects the pin to remap.
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494 * This parameter can be one of the following values:
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495 * @arg GPIO_Remap_SPI1 : SPI1 Alternate Function mapping
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496 * @arg GPIO_Remap_I2C1 : I2C1 Alternate Function mapping
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497 * @arg GPIO_Remap_USART1 : USART1 Alternate Function mapping
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498 * @arg GPIO_Remap_USART2 : USART2 Alternate Function mapping
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499 * @arg GPIO_PartialRemap_USART3 : USART3 Partial Alternate Function mapping
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500 * @arg GPIO_FullRemap_USART3 : USART3 Full Alternate Function mapping
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501 * @arg GPIO_PartialRemap_TIM1 : TIM1 Partial Alternate Function mapping
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502 * @arg GPIO_FullRemap_TIM1 : TIM1 Full Alternate Function mapping
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503 * @arg GPIO_PartialRemap1_TIM2 : TIM2 Partial1 Alternate Function mapping
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504 * @arg GPIO_PartialRemap2_TIM2 : TIM2 Partial2 Alternate Function mapping
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505 * @arg GPIO_FullRemap_TIM2 : TIM2 Full Alternate Function mapping
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506 * @arg GPIO_PartialRemap_TIM3 : TIM3 Partial Alternate Function mapping
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507 * @arg GPIO_FullRemap_TIM3 : TIM3 Full Alternate Function mapping
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508 * @arg GPIO_Remap_TIM4 : TIM4 Alternate Function mapping
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509 * @arg GPIO_Remap1_CAN1 : CAN1 Alternate Function mapping
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510 * @arg GPIO_Remap2_CAN1 : CAN1 Alternate Function mapping
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511 * @arg GPIO_Remap_PD01 : PD01 Alternate Function mapping
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512 * @arg GPIO_Remap_TIM5CH4_LSI : LSI connected to TIM5 Channel4 input capture for calibration
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513 * @arg GPIO_Remap_ADC1_ETRGINJ : ADC1 External Trigger Injected Conversion remapping
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514 * @arg GPIO_Remap_ADC1_ETRGREG : ADC1 External Trigger Regular Conversion remapping
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515 * @arg GPIO_Remap_ADC2_ETRGINJ : ADC2 External Trigger Injected Conversion remapping
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516 * @arg GPIO_Remap_ADC2_ETRGREG : ADC2 External Trigger Regular Conversion remapping
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517 * @arg GPIO_Remap_ETH : Ethernet remapping (only for Connectivity line devices)
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518 * @arg GPIO_Remap_CAN2 : CAN2 remapping (only for Connectivity line devices)
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519 * @arg GPIO_Remap_SWJ_NoJTRST : Full SWJ Enabled (JTAG-DP + SW-DP) but without JTRST
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520 * @arg GPIO_Remap_SWJ_JTAGDisable : JTAG-DP Disabled and SW-DP Enabled
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521 * @arg GPIO_Remap_SWJ_Disable : Full SWJ Disabled (JTAG-DP + SW-DP)
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522 * @arg GPIO_Remap_SPI3 : SPI3/I2S3 Alternate Function mapping (only for Connectivity line devices)
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523 * When the SPI3/I2S3 is remapped using this function, the SWJ is configured
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524 * to Full SWJ Enabled (JTAG-DP + SW-DP) but without JTRST.
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525 * @arg GPIO_Remap_TIM2ITR1_PTP_SOF : Ethernet PTP output or USB OTG SOF (Start of Frame) connected
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526 * to TIM2 Internal Trigger 1 for calibration (only for Connectivity line devices)
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527 * If the GPIO_Remap_TIM2ITR1_PTP_SOF is enabled the TIM2 ITR1 is connected to
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528 * Ethernet PTP output. When Reset TIM2 ITR1 is connected to USB OTG SOF output.
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529 * @arg GPIO_Remap_PTP_PPS : Ethernet MAC PPS_PTS output on PB05 (only for Connectivity line devices)
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530 * @arg GPIO_Remap_TIM15 : TIM15 Alternate Function mapping (only for Value line devices)
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531 * @arg GPIO_Remap_TIM16 : TIM16 Alternate Function mapping (only for Value line devices)
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532 * @arg GPIO_Remap_TIM17 : TIM17 Alternate Function mapping (only for Value line devices)
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533 * @arg GPIO_Remap_CEC : CEC Alternate Function mapping (only for Value line devices)
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534 * @arg GPIO_Remap_TIM1_DMA : TIM1 DMA requests mapping (only for Value line devices)
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535 * @arg GPIO_Remap_TIM9 : TIM9 Alternate Function mapping (only for XL-density devices)
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536 * @arg GPIO_Remap_TIM10 : TIM10 Alternate Function mapping (only for XL-density devices)
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537 * @arg GPIO_Remap_TIM11 : TIM11 Alternate Function mapping (only for XL-density devices)
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538 * @arg GPIO_Remap_TIM13 : TIM13 Alternate Function mapping (only for High density Value line and XL-density devices)
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539 * @arg GPIO_Remap_TIM14 : TIM14 Alternate Function mapping (only for High density Value line and XL-density devices)
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540 * @arg GPIO_Remap_FSMC_NADV : FSMC_NADV Alternate Function mapping (only for High density Value line and XL-density devices)
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541 * @arg GPIO_Remap_TIM67_DAC_DMA : TIM6/TIM7 and DAC DMA requests remapping (only for High density Value line devices)
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542 * @arg GPIO_Remap_TIM12 : TIM12 Alternate Function mapping (only for High density Value line devices)
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543 * @arg GPIO_Remap_MISC : Miscellaneous Remap (DMA2 Channel5 Position and DAC Trigger remapping,
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544 * only for High density Value line devices)
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545 * @param NewState: new state of the port pin remapping.
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546 * This parameter can be: ENABLE or DISABLE.
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549 void GPIO_PinRemapConfig(uint32_t GPIO_Remap, FunctionalState NewState)
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551 uint32_t tmp = 0x00, tmp1 = 0x00, tmpreg = 0x00, tmpmask = 0x00;
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553 /* Check the parameters */
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554 assert_param(IS_GPIO_REMAP(GPIO_Remap));
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555 assert_param(IS_FUNCTIONAL_STATE(NewState));
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557 if((GPIO_Remap & 0x80000000) == 0x80000000)
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559 tmpreg = AFIO->MAPR2;
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563 tmpreg = AFIO->MAPR;
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566 tmpmask = (GPIO_Remap & DBGAFR_POSITION_MASK) >> 0x10;
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567 tmp = GPIO_Remap & LSB_MASK;
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569 if ((GPIO_Remap & (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)) == (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK))
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571 tmpreg &= DBGAFR_SWJCFG_MASK;
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572 AFIO->MAPR &= DBGAFR_SWJCFG_MASK;
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574 else if ((GPIO_Remap & DBGAFR_NUMBITS_MASK) == DBGAFR_NUMBITS_MASK)
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576 tmp1 = ((uint32_t)0x03) << tmpmask;
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578 tmpreg |= ~DBGAFR_SWJCFG_MASK;
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582 tmpreg &= ~(tmp << ((GPIO_Remap >> 0x15)*0x10));
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583 tmpreg |= ~DBGAFR_SWJCFG_MASK;
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586 if (NewState != DISABLE)
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588 tmpreg |= (tmp << ((GPIO_Remap >> 0x15)*0x10));
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591 if((GPIO_Remap & 0x80000000) == 0x80000000)
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593 AFIO->MAPR2 = tmpreg;
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597 AFIO->MAPR = tmpreg;
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602 * @brief Selects the GPIO pin used as EXTI Line.
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603 * @param GPIO_PortSource: selects the GPIO port to be used as source for EXTI lines.
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604 * This parameter can be GPIO_PortSourceGPIOx where x can be (A..G).
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605 * @param GPIO_PinSource: specifies the EXTI line to be configured.
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606 * This parameter can be GPIO_PinSourcex where x can be (0..15).
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609 void GPIO_EXTILineConfig(uint8_t GPIO_PortSource, uint8_t GPIO_PinSource)
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611 uint32_t tmp = 0x00;
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612 /* Check the parameters */
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613 assert_param(IS_GPIO_EXTI_PORT_SOURCE(GPIO_PortSource));
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614 assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
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616 tmp = ((uint32_t)0x0F) << (0x04 * (GPIO_PinSource & (uint8_t)0x03));
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617 AFIO->EXTICR[GPIO_PinSource >> 0x02] &= ~tmp;
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618 AFIO->EXTICR[GPIO_PinSource >> 0x02] |= (((uint32_t)GPIO_PortSource) << (0x04 * (GPIO_PinSource & (uint8_t)0x03)));
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622 * @brief Selects the Ethernet media interface.
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623 * @note This function applies only to STM32 Connectivity line devices.
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624 * @param GPIO_ETH_MediaInterface: specifies the Media Interface mode.
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625 * This parameter can be one of the following values:
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626 * @arg GPIO_ETH_MediaInterface_MII: MII mode
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627 * @arg GPIO_ETH_MediaInterface_RMII: RMII mode
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630 void GPIO_ETH_MediaInterfaceConfig(uint32_t GPIO_ETH_MediaInterface)
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632 assert_param(IS_GPIO_ETH_MEDIA_INTERFACE(GPIO_ETH_MediaInterface));
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634 /* Configure MII_RMII selection bit */
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635 *(__IO uint32_t *) MAPR_MII_RMII_SEL_BB = GPIO_ETH_MediaInterface;
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650 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
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