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/**

  ******************************************************************************

  * @file    stm32l1xx_syscfg.c

  * @author  MCD Application Team

  * @version V1.0.0RC1

  * @date    07/02/2010

  * @brief   This file provides all the SYSCFG and RI 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>&copy; COPYRIGHT 2010 STMicroelectronics</center></h2>

  */

/* Includes ------------------------------------------------------------------*/

#include "stm32l1xx_syscfg.h"

#include "stm32l1xx_rcc.h"

/** @addtogroup STM32L1xx_StdPeriph_Driver

  * @{

  */

/** @defgroup SYSCFG

  * @brief SYSCFG driver modules

  * @{

  */

/** @defgroup SYSCFG_Private_TypesDefinitions

  * @{

  */

/**

  * @}

  */

/** @defgroup SYSCFG_Private_Defines

  * @{

  */

#define RI_ICR_RESET_VALUE          ((uint32_t)0x00000000) /*!< ICR Reset value */

#define RI_ASCR1_RESET_VALUE        ((uint32_t)0x00000000) /*!< ASCR1 Reset value */

#define RI_ASCR2_RESET_VALUE        ((uint32_t)0x00000000) /*!< ASCR2 Reset value */

#define RI_HYSCR1_RESET_VALUE       ((uint32_t)0x00000000) /*!< HYSCR1 Reset value */

#define RI_HYSCR2_RESET_VALUE       ((uint32_t)0x00000000) /*!< HYSCR2 Reset value */

#define RI_HYSCR3_RESET_VALUE       ((uint32_t)0x00000000) /*!< HYSCR3 Reset value */

#define TIM_SELECT_MASK             ((uint32_t)0xFFFCFFFF) /*!< TIM select mask */

#define IC_ROUTING_MASK             ((uint32_t)0x0000000F) /*!< Input Capture routing mask */

/**

  * @}

  */

/** @defgroup SYSCFG_Private_Macros

  * @{

  */

/**

  * @}

  */

/** @defgroup SYSCFG_Private_Variables

  * @{

  */

/**

  * @}

  */

/** @defgroup SYSCFG_Private_FunctionPrototypes

  * @{

  */

/**

  * @}

  */

/** @defgroup SYSCFG_Private_Functions

  * @{

  */

/**

  * @brief  Deinitializes the syscfg registers to their default reset values.

  * @param  None

  * @retval None

  * @ Note: MEMRMP bits are not reset by APB2 reset.

  */

void SYSCFG_DeInit(void)

{

   RCC_APB2PeriphResetCmd(RCC_APB2Periph_SYSCFG, ENABLE);

   RCC_APB2PeriphResetCmd(RCC_APB2Periph_SYSCFG, DISABLE);

}

/**

  * @brief  Changes the mapping of the specified pin.

  * @param  SYSCFG_Memory: selects the memory remapping.

  *   This parameter can be one of the following values:

  *     @arg SYSCFG_MemoryRemap_Flash: Main Flash memory mapped at 0x00000000

  *     @arg SYSCFG_MemoryRemap_SystemFlash: System Flash memory mapped at 0x00000000

  *     @arg SYSCFG_MemoryRemap_SRAM: Embedded SRAM mapped at 0x00000000

  * @retval None

  */

void SYSCFG_MemoryRemapConfig(uint8_t SYSCFG_MemoryRemap)

{

  /* Check the parameters */

  assert_param(IS_SYSCFG_MEMORY_REMAP_CONFING(SYSCFG_MemoryRemap));

  SYSCFG->MEMRMP = SYSCFG_MemoryRemap;

}

/**

  * @brief  Control the internal pull-up on USB DP line.

  * @param  NewState: New state of the switch control mode.

  *   This parameter can be ENABLE: Connect internal pull-up on USB DP line.

  *                      or DISABLE: Disconnect internal pull-up on USB DP line.

  * @retval None

  */

void SYSCFG_USBPuCmd(FunctionalState NewState)

{

  /* Check the parameters */

  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)

  {

    /* Connect internal pull-up on USB DP line */

    SYSCFG->PMC |= (uint32_t) SYSCFG_PMC_USB_PU;

  }

  else

  {

    /* Disconnect internal pull-up on USB DP line */

    SYSCFG->PMC &= (uint32_t)(~SYSCFG_PMC_USB_PU);

  }

}

/**

  * @brief  Selects the GPIO pin used as EXTI Line.

  * @param  EXTI_PortSourceGPIOx : selects the GPIO port to be used as source

  *                                for EXTI lines where x can be (A, B, C, D, E or H).

  * @param  EXTI_PinSourcex: specifies the EXTI line to be configured.

  *   This parameter can be EXTI_PinSourcex where x can be (0..15)

  * @retval None

  */

void SYSCFG_EXTILineConfig(uint8_t EXTI_PortSourceGPIOx, uint8_t EXTI_PinSourcex)

{

  uint32_t tmp = 0x00;

  /* Check the parameters */

  assert_param(IS_EXTI_PORT_SOURCE(EXTI_PortSourceGPIOx));

  assert_param(IS_EXTI_PIN_SOURCE(EXTI_PinSourcex));

  tmp = ((uint32_t)0x0F) << (0x04 * (EXTI_PinSourcex & (uint8_t)0x03));

  SYSCFG->EXTICR[EXTI_PinSourcex >> 0x02] &= ~tmp;

  SYSCFG->EXTICR[EXTI_PinSourcex >> 0x02] |= (((uint32_t)EXTI_PortSourceGPIOx) << (0x04 * (EXTI_PinSourcex & (uint8_t)0x03)));

}

/**

  * @brief Deinitializes the RI registers to their default reset values.

  * @param  None

  * @retval None

  */

void SYSCFG_RIDeInit(void)

{

  RI->ICR     = RI_ICR_RESET_VALUE;         /*!< Set RI->ICR to reset value */

  RI->ASCR1   = RI_ASCR1_RESET_VALUE;       /*!< Set RI->ASCR1 to reset value */

  RI->ASCR2   = RI_ASCR2_RESET_VALUE;       /*!< Set RI->ASCR2 to reset value */

  RI->HYSCR1  = RI_HYSCR1_RESET_VALUE;      /*!< Set RI->HYSCR1 to reset value */

  RI->HYSCR2  = RI_HYSCR2_RESET_VALUE;      /*!< Set RI->HYSCR2 to reset value */

  RI->HYSCR3  = RI_HYSCR3_RESET_VALUE;      /*!< Set RI->HYSCR3 to reset value */

}

/**

  * @brief  Configures the routing interface to select which Timer to be routed.

  * @param  TIM_Select: Timer select.

  *   This parameter can be one of the following values:

  *     @arg TIM_Select_None : No timer selected

  *     @arg TIM_Select_TIM2 : Timer 2 selected

  *     @arg TIM_Select_TIM3 : Timer 3 selected

  *     @arg TIM_Select_TIM4 : Timer 4 selected

  * @retval None.

  */

void SYSCFG_RITIMSelect(uint32_t TIM_Select)

{

  uint32_t tmpreg = 0;

  /* Check the parameters */

  assert_param(IS_RI_TIM(TIM_Select));

  /* Get the old register value */

  tmpreg = RI->ICR;

  /* Clear the TIMx select bits */

  tmpreg &= TIM_SELECT_MASK;

  /* Select the Timer */

  tmpreg |= (TIM_Select);

  /* Write to RI->ICR register */

  RI->ICR = tmpreg;

}

/**

  * @brief  Configures the routing interface to select which Timer Input Capture

  *         to be routed to a selected pin.

  * @param  RI_InputCapture selects which input capture to be routed.

  *   This parameter can be one of the following values:

  *     @arg  RI_InputCapture_IC1: Input capture 1 is slected.

  *     @arg  RI_InputCapture_IC2: Input capture 2 is slected.

  *     @arg  RI_InputCapture_IC3: Input capture 3 is slected.

  *     @arg  RI_InputCapture_IC4: Input capture 4 is slected.

  * @param  RI_InputCaptureRouting: selects which pin to be routed to Input Capture.

  *   This parameter can be one of the following values:

  *     @arg  RI_InputCaptureRouting_0 to RI_InputCaptureRouting_15

  * @Note Input capture selection bits are not reset by this function.

  * @retval None.

  */

void SYSCFG_RITIMInputCaptureConfig(uint32_t RI_InputCapture, uint32_t RI_InputCaptureRouting)

{

  uint32_t tmpreg = 0;

  /* Check the parameters */

  assert_param(IS_RI_INPUTCAPTURE(RI_InputCapture));

  assert_param(IS_RI_INPUTCAPTURE_ROUTING(RI_InputCaptureRouting));

  /* Get the old register value */

  tmpreg = RI->ICR;

  /* Select input captures to be routed */

  tmpreg |= (RI_InputCapture);

  if((RI_InputCapture & RI_InputCapture_IC1) == RI_InputCapture_IC1)

  {

    /* Clear the input capture select bits */

    tmpreg &= (uint32_t)(~IC_ROUTING_MASK);

    /* Set RI_InputCaptureRouting bits  */

    tmpreg |= (uint32_t)( RI_InputCaptureRouting);

  }

  if((RI_InputCapture & RI_InputCapture_IC2) == RI_InputCapture_IC2)

  {

    /* Clear the input capture select bits */

    tmpreg &= (uint32_t)(~(IC_ROUTING_MASK << 4));

    /* Set RI_InputCaptureRouting bits  */

    tmpreg |= (uint32_t)( (RI_InputCaptureRouting << 4));

  }

  if((RI_InputCapture & RI_InputCapture_IC3) == RI_InputCapture_IC3)

  {

    /* Clear the input capture select bits */

    tmpreg &= (uint32_t)(~(IC_ROUTING_MASK << 8));

    /* Set RI_InputCaptureRouting bits  */

    tmpreg |= (uint32_t)( (RI_InputCaptureRouting << 8));

  }

  if((RI_InputCapture & RI_InputCapture_IC4) == RI_InputCapture_IC4)

  {

    /* Clear the input capture select bits */

    tmpreg &= (uint32_t)(~(IC_ROUTING_MASK << 12));

    /* Set RI_InputCaptureRouting bits  */

    tmpreg |= (uint32_t)( (RI_InputCaptureRouting << 12));

  }

  /* Write to RI->ICR register */

  RI->ICR = tmpreg;

}

/**

  * @brief  Configures the Pull-up and Pull-down Resistors

  * @param  RI_Resistor selects the resistor to connect.

  *   This parameter can be  one of the following values:

  *     @arg RI_Resistor_10KPU : 10K pull-up resistor

  *     @arg RI_Resistor_400KPU : 400K pull-up resistor

  *     @arg RI_Resistor_10KPD : 10K pull-down resistor

  *     @arg RI_Resistor_400KPD : 400K pull-down resistor

  * @param  NewState: New state of the analog switch associated to the selected resistor.

  *   This parameter can be:

  *      ENABLE so the selected resistor is connected

  *   or DISABLE so the selected resistor is disconnected

  * @retval None

  */

void SYSCFG_RIResistorConfig(uint32_t RI_Resistor, FunctionalState NewState)

{

  /* Check the parameters */

  assert_param(IS_RI_RESISTOR(RI_Resistor));

  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)

  {

    /* Enable the resistor */

    COMP->CSR |= (uint32_t) RI_Resistor;

  }

  else

  {

    /* Disable the Resistor */

    COMP->CSR &= (uint32_t) (~RI_Resistor);

  }

}

/**

  * @brief  Close or Open the routing interface Input Output switches.

  * @param  RI_IOSwitch: selects the I/O analog switch number.

  *   This parameter can be one of the following values:

  *     @arg RI_IOSwitch_CH0 --> RI_IOSwitch_CH15

  *     @argRI_IOSwitch_CH18 --> RI_IOSwitch_CH25

  *     @arg RI_IOSwitch_GR10_1 --> RI_IOSwitch_GR10_4

  *     @arg RI_IOSwitch_GR6_1 --> RI_IOSwitch_GR6_2

  *     @arg RI_IOSwitch_GR5_1 --> RI_IOSwitch_GR5_3

  *     @arg RI_IOSwitch_GR4_1 --> RI_IOSwitch_GR4_3

  *     @arg  RI_IOSwitch_VCOMP

  * @param  NewState: New state of the analog switch.

  *   This parameter can be

  *     ENABLE so the Input Output switch is closed

  *     or DISABLE so the Input Output switch is open

  * @retval None

  */

void SYSCFG_RIIOSwitchConfig(uint32_t RI_IOSwitch, FunctionalState NewState)

{

  uint32_t IOSwitchmask = 0;

  /* Check the parameters */

  assert_param(IS_RI_IOSWITCH(RI_IOSwitch));

  /* Read Analog switch register index*/

  IOSwitchmask = RI_IOSwitch >> 28;

  /** Get Bits[27:0] of the IO switch */

  RI_IOSwitch  &= 0x0FFFFFFF;

  if (NewState != DISABLE)

  {

    if (IOSwitchmask != 0)

    {

      /* Close the analog switches */

      RI->ASCR1 |= RI_IOSwitch;

    }

    else

    {

      /* Open the analog switches */

      RI->ASCR2 |= RI_IOSwitch;

    }

  }

  else

  {

    if (IOSwitchmask != 0)

    {

      /* Close the analog switches */

      RI->ASCR1 &= (~ (uint32_t)RI_IOSwitch);

    }

    else

    {

      /* Open the analog switches */

      RI->ASCR2 &= (~ (uint32_t)RI_IOSwitch);

    }

  }

}

/**

  * @brief  Enable or disable the switch control mode.

  * @param  NewState: New state of the switch control mode. This parameter can

  *         be ENABLE: ADC analog switches closed if the corresponding

  *                    I/O switch is also closed.

  *         or DISABLE: ADC analog switches open or controlled by the ADC interface.

  * @retval None

  */

void SYSCFG_RISwitchControlModeCmd(FunctionalState NewState)

{

  /* Check the parameters */

  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)

  {

    /* Enable the Switch control mode */

    RI->ASCR1 |= (uint32_t) RI_ASCR1_SCM;

  }

  else

  {

    /* Disable the Switch control mode */

    RI->ASCR1 &= (uint32_t)(~RI_ASCR1_SCM);

  }

}

/**

  * @brief  Enable or disable Hysteresis of the input schmitt triger of Ports A..E

  * @param  RI_Port: selects the GPIO Port.

  *   This parameter can be one of the following values:

  *     @arg RI_PortA : Port A is selected

  *     @arg RI_PortB : Port B is selected

  *     @arg RI_PortC : Port C is selected

  *     @arg RI_PortD : Port D is selected

  *     @arg RI_PortE : Port E is selected

  *  @param RI_Pin : Selects the pin(s) on which to enable or disable hysteresis.

  *    This parameter can any value from RI_Pin_x where x can be (0..15) or RI_Pin_All.

  *  @param  NewState new state of the Hysteresis.

  *   This parameter can be:

  *      ENABLE so the Hysteresis is on

  *   or DISABLE so the Hysteresis is off

  * @retval None

  */

void SYSCFG_RIHysteresisConfig(uint8_t RI_Port, uint16_t RI_Pin,

                             FunctionalState NewState)

{

  /* Check the parameters */

  assert_param(IS_RI_PORT(RI_Port));

  assert_param(IS_RI_PIN(RI_Pin));

  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if(RI_Port == RI_PortA)

  {

    if (NewState != DISABLE)

    {

      /* Hysteresis on */

      RI->HYSCR1 &= (uint32_t)~((uint32_t)RI_Pin);

    }

    else

    {

      /* Hysteresis off */

      RI->HYSCR1 |= (uint32_t) RI_Pin;

    }

  }

  else if(RI_Port == RI_PortB)

  {

    if (NewState != DISABLE)

    {

      /* Hysteresis on */

      RI->HYSCR1 &= (uint32_t) (~((uint32_t)RI_Pin) << 16);

    }

    else

    {

      /* Hysteresis off */

      RI->HYSCR1 |= (uint32_t) ((uint32_t)(RI_Pin) << 16);

    }

  }

  else if(RI_Port == RI_PortC)

  {

    if (NewState != DISABLE)

    {

      /* Hysteresis on */

      RI->HYSCR2 &= (uint32_t) (~((uint32_t)RI_Pin));

    }

    else

    {

      /* Hysteresis off */

      RI->HYSCR2 |= (uint32_t) (RI_Pin );

    }

  }

  else if(RI_Port == RI_PortD)

  {

    if (NewState != DISABLE)

    {

      /* Hysteresis on */

      RI->HYSCR2 &= (uint32_t) (~((uint32_t)RI_Pin) << 16);

    }

    else

    {

      /* Hysteresis off */

      RI->HYSCR2 |= (uint32_t) ((uint32_t)(RI_Pin) << 16);

    }

  }

  else /* RI_Port == RI_PortE */

  {

    if (NewState != DISABLE)

    {

      /* Hysteresis on */

      RI->HYSCR3 &= (uint32_t) (~((uint32_t)RI_Pin));

    }

    else

    {

      /* Hysteresis off */

      RI->HYSCR3 |= (uint32_t) (RI_Pin );

    }

  }

}

/**

  * @}

  */

/**

  * @}

  */

/**

  * @}

  */

/******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/