Subversion Repositories NaviCtrl

/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************

* File Name          : 91x_tim.c

* Author             : MCD Application Team

* Version            : V2.1

* Date               : 12/22/2008

* Description        : This file provides all the TIM firmware functions.

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

* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION

* CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.

*******************************************************************************/

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

#include "91x_tim.h"

/* Include of other module interface headers ---------------------------------*/

/* Local includes ------------------------------------------------------------*/

/* Private typedef -----------------------------------------------------------*/

/* Private define ------------------------------------------------------------*/

/* TIM Bits Masks */

#define TIM_PWM_MASK          0x0010

#define TIM_OPM_MASK          0x0020

#define TIM_OC1_ENABLE_MASK   0x0040

#define TIM_OC1_DISABLE_MASK  0xFFBF

#define TIM_OC2_ENABLE_MASK   0x0080

#define TIM_OC2_DISABLE_MASK  0xFF7F

#define TIM_OLVL1_SET_MASK    0x0100

#define TIM_OLVL1_RESET_MASK  0xFEFF

#define TIM_OLVL2_SET_MASK    0x0200

#define TIM_OLVL2_RESET_MASK  0xFDFF

#define TIM_ENABLE_MASK       0x8000

#define TIM_DISABLE_MASK      0x7FFF

#define TIM_DMA_CLEAR_MASK    0xCFFF

/* Private macro -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* Private function prototypes -----------------------------------------------*/

/* Interface functions -------------------------------------------------------*/

/* Private functions ---------------------------------------------------------*/

/*******************************************************************************

* Function Name  : TIM_DeInit

* Description    : Initializes TIM peripheral control and registers to their

*                : default reset values.

* Input          : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Output         : None

* Return         : None

*******************************************************************************/

void TIM_DeInit(TIM_TypeDef *TIMx)

{

  if((TIMx == TIM0)||(TIMx == TIM1))

  {

    SCU_APBPeriphReset(__TIM01, DISABLE);    /* TIM0 & TIM1 Reset's off */

  }

  else

  {

    SCU_APBPeriphReset(__TIM23, DISABLE);    /* TIM2 & TIM3 Reset's off */

  }

  /* Set all the TIMx registers to thier default values */

  TIMx->OC1R = 0x8000;

  TIMx->OC2R = 0x8000;

  TIMx->CR1  = 0x0;

  TIMx->CR2  = 0x1;

  TIMx->CNTR = 0x1234;

  TIMx->SR   = 0x0;

}

/*******************************************************************************

* Function Name  : TIM_StructInit

* Description    : Fills in a TIM_InitTypeDef structure with the reset value of

*                  each parameter.

* Input          : TIM_InitStruct : pointer to a TIM_InitTypeDef structure

                   which will be initialized.

* Output         : None

* Return         : None.

*******************************************************************************/

void TIM_StructInit(TIM_InitTypeDef *TIM_InitStruct)

{

  TIM_InitStruct->TIM_Mode           = 0x0000;

  TIM_InitStruct->TIM_OC1_Modes      = 0x0000;

  TIM_InitStruct->TIM_OC2_Modes      = 0x0000;

  TIM_InitStruct->TIM_Clock_Source   = 0x0000;

  TIM_InitStruct->TIM_Clock_Edge     = 0x0000;

  TIM_InitStruct->TIM_OPM_INPUT_Edge = 0x0000;

  TIM_InitStruct->TIM_ICAP1_Edge     = 0x0000;

  TIM_InitStruct->TIM_ICAP2_Edge     = 0x0000;

  TIM_InitStruct->TIM_Prescaler      = 0x0000;

  TIM_InitStruct->TIM_Pulse_Level_1  = 0x0000;

  TIM_InitStruct->TIM_Pulse_Level_2  = 0x0000;

  TIM_InitStruct->TIM_Period_Level   = 0x0000;

  TIM_InitStruct->TIM_Pulse_Length_1 = 0x0000;

  TIM_InitStruct->TIM_Pulse_Length_2 = 0x0000;

  TIM_InitStruct->TIM_Full_Period    = 0x0000;

}

/*******************************************************************************

* Function Name  : TIM_Init

* Description    : Initializes TIM  peripheral according to the specified

*                  parameters in the TIM_InitTypeDef structure.

* Input1         : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Input2         : TIM_InitStruct: pointer to a TIM_InitTypeDef structure that

*                  contains the configuration information for the specified

*                  TIM peripheral.

* Output         : None

* Return         : None

*******************************************************************************/

void TIM_Init(TIM_TypeDef *TIMx, TIM_InitTypeDef *TIM_InitStruct)

{

/***************************** Clock configuration ****************************/

  if (TIM_InitStruct->TIM_Clock_Source == TIM_CLK_APB)

  {

    /* APB clock */

    TIMx->CR1 &= TIM_CLK_APB;

  }

  else

  {

    /* External clock */

    TIMx->CR1 |= TIM_CLK_EXTERNAL;

    if (TIM_InitStruct->TIM_Clock_Edge == TIM_CLK_EDGE_RISING)

    {

      /* Clock rising edge */

      TIMx->CR1 |= TIM_CLK_EDGE_RISING;

    }

    else

    {

      /* Clock falling edge */

      TIMx->CR1 &= TIM_CLK_EDGE_FALLING;

    }

  }

/************************** Prescaler configuration ***************************/

  TIMx->CR2 =( TIMx->CR2 & 0xFF00 )|TIM_InitStruct->TIM_Prescaler ;

/********************************** TIM Modes *********************************/

  switch ( TIM_InitStruct->TIM_Mode)

  {

/******************************* PWM Input mode *******************************/

    case TIM_PWMI:

      /* Set the PWMI Bit */

      TIMx->CR1 |= TIM_PWMI;

      /* Set the first edge Level */

      if ( TIM_InitStruct->TIM_ICAP1_Edge == TIM_ICAP1_EDGE_RISING)

      {

        TIMx->CR1 |= TIM_ICAP1_EDGE_RISING;

      }

      else

      {

        TIMx->CR1 &= TIM_ICAP1_EDGE_FALLING;

      }

      /* Set the Second edge Level ( Opposite of the first level ) */

      if ( TIM_InitStruct->TIM_ICAP1_Edge == TIM_ICAP1_EDGE_RISING)

      {

        TIMx->CR1 &= TIM_ICAP2_EDGE_FALLING;

      }

      else

      {

        TIMx->CR1 |= TIM_ICAP2_EDGE_RISING;

      }

      break;

/************************** Output compare channel 1 **************************/

    case TIM_OCM_CHANNEL_1:

      if (TIM_InitStruct->TIM_Pulse_Level_1 == TIM_HIGH)

      {

        TIMx->CR1 |= TIM_OLVL1_SET_MASK;

      }

      else

      {

        TIMx->CR1 &= TIM_OLVL1_RESET_MASK;

      }

      TIMx->OC1R = TIM_InitStruct->TIM_Pulse_Length_1;

      if (TIM_InitStruct->TIM_OC1_Modes == TIM_TIMING)

      {

        TIMx->CR1 &= TIM_OC1_DISABLE_MASK;

      }

      else

      {

        TIMx->CR1 |= TIM_OC1_ENABLE_MASK;

      }

      break;

/************************** Output compare channel 2 **************************/

    case TIM_OCM_CHANNEL_2:

      if (TIM_InitStruct->TIM_Pulse_Level_2 == TIM_HIGH)

      {

        TIMx->CR1 |= TIM_OLVL2_SET_MASK;

      }

      else

      {

        TIMx->CR1 &= TIM_OLVL2_RESET_MASK;

      }

      TIMx->OC2R = TIM_InitStruct->TIM_Pulse_Length_2;

      if (TIM_InitStruct->TIM_OC2_Modes == TIM_TIMING)

      {

        TIMx->CR1 &= TIM_OC2_DISABLE_MASK;

      }

      else

      {

        TIMx->CR1 |= TIM_OC2_ENABLE_MASK;

      }

      break;

/************************ Output compare channel 1 & 2 ************************/

   case TIM_OCM_CHANNEL_12:

    TIMx->OC2R = TIM_InitStruct->TIM_Pulse_Length_2;

    TIMx->OC1R = TIM_InitStruct->TIM_Pulse_Length_1;

    if (TIM_InitStruct->TIM_OC2_Modes == TIM_TIMING)

    {

      TIMx->CR1 &= TIM_OC2_DISABLE_MASK;

    }

    else

    {

      TIMx->CR1 |= TIM_OC2_ENABLE_MASK;

    }

    if (TIM_InitStruct->TIM_OC1_Modes == TIM_TIMING)

    {

      TIMx->CR1 &= TIM_OC1_DISABLE_MASK;

    }

    else

    {

      TIMx->CR1 |= TIM_OC1_ENABLE_MASK;

    }

    if (TIM_InitStruct->TIM_Pulse_Level_1 == TIM_HIGH)

    {

      TIMx->CR1 |= TIM_OLVL1_SET_MASK;

    }

    else

    {

      TIMx->CR1 &= TIM_OLVL1_RESET_MASK;

    }

    if (TIM_InitStruct->TIM_Pulse_Level_2 == TIM_HIGH)

    {

      TIMx->CR1 |= TIM_OLVL2_SET_MASK;

    }

    else

    {

      TIMx->CR1 &= TIM_OLVL2_RESET_MASK;

    }

    break;

/********************************** PWM mode **********************************/

    case TIM_PWM:

      /* Set the Level During the pulse */

      if ( TIM_InitStruct->TIM_Pulse_Level_1 == TIM_HIGH)

      {

        TIMx->CR1 |= TIM_OLVL2_SET_MASK;

      }

      else

      {

        TIMx->CR1 &= TIM_OLVL2_RESET_MASK;

      }

      /* Set the Level after the pulse */

      if (TIM_InitStruct->TIM_Period_Level == TIM_HIGH)

      {

        TIMx->CR1 |= TIM_OLVL1_SET_MASK;

      }

      else

      {

        TIMx->CR1 &= TIM_OLVL1_RESET_MASK;

      }

      /* Set the OCAE */

      TIMx->CR1 |= TIM_OC1_ENABLE_MASK;

      /* Set the PWM Bit */

      TIMx->CR1 |= TIM_PWM_MASK;

      /* Set the Duty Cycle value */

      TIMx->OC1R = TIM_InitStruct->TIM_Pulse_Length_1 ;

      /* Set the Full Period */

      TIMx->OC2R = TIM_InitStruct->TIM_Full_Period ;

      break;

/******************************* One pulse mode *******************************/

    case TIM_OPM:

      /* Set the Level During the pulse */

      if (TIM_InitStruct->TIM_Pulse_Level_1 == TIM_HIGH)

      {

        TIMx->CR1 |= TIM_OLVL2_SET_MASK;

      }

      /* Set the Level after the pulse  */

      if (TIM_InitStruct->TIM_Period_Level == TIM_HIGH)

      {

        TIMx->CR1 |= TIM_OLVL1_SET_MASK;

      }

      /* Set the Activation Edge on the ICAP 1 */

      if (TIM_InitStruct->TIM_OPM_INPUT_Edge == TIM_OPM_EDGE_RISING)

      {

        TIMx->CR1 |= TIM_OPM_EDGE_RISING;

      }

      /* Set the Output Compare Function  */

      TIMx->CR1 |= TIM_OC1_ENABLE_MASK;

      /* Set the One pulse mode */

      TIMx->CR1 |= TIM_OPM_MASK;

      /* Set the Pulse length  */

      TIMx->OC1R = TIM_InitStruct->TIM_Pulse_Length_1;

      break;

/*************************** Input capture channel 1 **************************/

    case TIM_ICAP_CHANNEL_1:

      if (TIM_InitStruct->TIM_ICAP1_Edge == TIM_ICAP1_EDGE_RISING)

      {

        TIMx->CR1 |= TIM_ICAP1_EDGE_RISING;

      }

      else

      {

        TIMx->CR1 &= TIM_ICAP1_EDGE_FALLING;

      }

      break;

/*************************** Input capture channel 2 **************************/

    case TIM_ICAP_CHANNEL_2:

      if (TIM_InitStruct->TIM_ICAP2_Edge == TIM_ICAP2_EDGE_RISING)

      {

        TIMx->CR1 |= TIM_ICAP2_EDGE_RISING;

      }

      else

      {

        TIMx->CR1 &= TIM_ICAP2_EDGE_FALLING;

      }

      break;

/************************* Input capture channel 1 & 2 ************************/

    case TIM_ICAP_CHANNEL_12:

      if (TIM_InitStruct->TIM_ICAP2_Edge == TIM_ICAP2_EDGE_RISING)

      {

        TIMx->CR1 |= TIM_ICAP2_EDGE_RISING;

      }

      else

      {

        TIMx->CR1 &= TIM_ICAP2_EDGE_FALLING;

      }

      if (TIM_InitStruct->TIM_ICAP1_Edge == TIM_ICAP1_EDGE_RISING)

      {

        TIMx->CR1 |= TIM_ICAP1_EDGE_RISING;

      }

      else

      {

        TIMx->CR1 &= TIM_ICAP1_EDGE_FALLING;

      }

      break;

    default:

      break;

  }

}

/*******************************************************************************

* Function Name  : TIM_CounterCmd

* Description    : Enables or disables TIMx Counter peripheral.

* Input1         : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Input2         : TIM_operation: specifies the new state of the TIMx Counter.

*                  This parameter can be one of the following values:

*                       - TIM_START: Start the timer counter.

*                       - TIM_STOP : Stop the timer counter.

*                       - TIM_CLEAR: Clear the timer counter.

* Output         : None

* Return         : None

*******************************************************************************/

void TIM_CounterCmd(TIM_TypeDef *TIMx, TIM_CounterOperations TIM_operation)

{

  switch (TIM_operation)

  {

    case TIM_START:

      TIMx->CR1 |= TIM_ENABLE_MASK;

      break;

    case TIM_STOP:

      TIMx->CR1 &= TIM_DISABLE_MASK;

      break;

    case TIM_CLEAR:

      TIMx->CNTR = 0x1234;

      break;

    default:

      break;

  }

}

/*******************************************************************************

* Function Name  : TIM_PrescalerConfig

* Description    : This routine is used to configure the TIMx prescaler value

*                  (when using the APB clock).

* Input1         : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Input2         : TIM_Prescaler: specifies the prescaler value. This parameter

*                  can be a value from 0x0 to 0xFF.

* Output         : None

* Return         : None

*******************************************************************************/

void TIM_PrescalerConfig(TIM_TypeDef *TIMx, u8 TIM_Prescaler)

{

  TIMx->CR2 &= 0xFF00;

  TIMx->CR2 |= TIM_Prescaler;

}

/*******************************************************************************

* Function Name  : TIM_GetPrescalerValue

* Description    : This routine is used to get the TIMx prescaler value

*                  (when using the APB clock).

* Input          : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Output         : None

* Return         : The prescaler value.

*******************************************************************************/

u8 TIM_GetPrescalerValue(TIM_TypeDef *TIMx)

{

  return TIMx->CR2 & 0x00FF;

}

/*******************************************************************************

* Function Name  : TIM_GetCounterValue

* Description    : This routine is used to get the TIMx counter value.

* Input          : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Output         : None

* Return         : The counter value.

*******************************************************************************/

u16 TIM_GetCounterValue(TIM_TypeDef *TIMx)

{

  return TIMx->CNTR;

}

/*******************************************************************************

* Function Name  : TIM_GetICAP1Value

* Description    : This routine is used to get the Input Capture 1 value.

* Input          : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Output         : None

* Return         : The Input Capture 1 value.

*******************************************************************************/

u16 TIM_GetICAP1Value(TIM_TypeDef *TIMx)

{

  return TIMx->IC1R;

}

/*******************************************************************************

* Function Name  : TIM_GetICAP2Value

* Description    : This routine is used to get the Input Capture 2 value.

* Input          : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Output         : None

* Return         : The Input Capture 2 value.

*******************************************************************************/

u16 TIM_GetICAP2Value(TIM_TypeDef *TIMx)

{

  return TIMx->IC2R;

}

/*******************************************************************************

* Function Name  : TIM_SetPulse

* Description    : This routine is used to set the pulse value.

* Input1         : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Input2         : TIM_Channel: specifies the needed channel.

*                  This parameter can be one of the following values:

*                       - TIM_PWM_OC1_Channel: PWM/Output Compare 1 Channel

*                       - TIM_OC2_Channel    : Output Compare 2 Channel

* Input3         : TIM_Pulse: specifies the new pulse value.

* Output         : None

* Return         : None

*******************************************************************************/

void TIM_SetPulse(TIM_TypeDef *TIMx,u16 TIM_Channel ,u16 TIM_Pulse)

{

  if (TIM_Channel == TIM_PWM_OC1_Channel)

  {

    TIMx->OC1R = TIM_Pulse;

  }

  else

  {

    TIMx->OC2R = TIM_Pulse;

  }

}

/*******************************************************************************

* Function Name  : TIM_GetFlagStatus

* Description    : Checks whether the specified TIMx flag is set or not.

* Input1         : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Input2         : TIM_Flag: specifies the flag to check.

*                  This parameter can be one of the following values:

*                       - TIM_FLAG_IC1: Input Capture Channel 1 Flag

*                       - TIM_FLAG_IC2: Input Capture Channel 2 Flag

*                       - TIM_FLAG_TO : Timer Overflow Flag

*                       - TIM_FLAG_OC1: Output Compare Channel 1 Flag

*                       - TIM_FLAG_OC2: Output Compare Channel 2 Flag

* Output         : None

* Return         : The NewState of the TIM_Flag (SET or RESET).

*******************************************************************************/

FlagStatus TIM_GetFlagStatus(TIM_TypeDef *TIMx, u16 TIM_Flag)

{

  if((TIMx->SR & TIM_Flag) == RESET)

  {

    return RESET;

  }

  else

  {

    return SET;

  }

}

/*******************************************************************************

* Function Name  : TIM_ClearFlag

* Description    : Clears the TIM Flag passed as a parameter.

* Input1         : TIMx: where x can be from 0 to 3 to select the TIM

*                    peripheral.

* Input2         : TIM_Flag: specifies the flag to clear.

*                  This parameter can be one of the following values:

*                       - TIM_FLAG_IC1: Input Capture Channel 1 Flag

*                       - TIM_FLAG_IC2: Input Capture Channel 2 Flag

*                       - TIM_FLAG_TO : Timer Overflow Flag

*                       - TIM_FLAG_OC1: Output Compare Channel 1 Flag

*                       - TIM_FLAG_OC2: Output Compare Channel 2 Flag

* Output         : None

* Return         : None

*******************************************************************************/

void TIM_ClearFlag(TIM_TypeDef *TIMx, u16 TIM_Flag)

{

  /* Clear TIM_Flag */

  TIMx->SR &= ~TIM_Flag;

}

/*******************************************************************************

* Function Name  : TIM_GetPWMIPulse

* Description    : This routine is used to get the Pulse value in PWMI Mode.

* Input          : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Output         : None

* Return         : The pulse value.

*******************************************************************************/

u16 TIM_GetPWMIPulse(TIM_TypeDef *TIMx)

{

  return TIMx->IC2R;

}

/*******************************************************************************

* Function Name  : TIM_GetPWMIPeriod

* Description    : This routine is used to get the Period value in PWMI Mode.

* Input          : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Output         : None

* Return         : The period value.

*******************************************************************************/

u16 TIM_GetPWMIPeriod(TIM_TypeDef *TIMx)

{

  return TIMx->IC1R;

}

/*******************************************************************************

* Function Name  : TIM_ITConfig

* Description    : Configures the Timer interrupt source.

* Input1         : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Input2         : TIM_IT: specifies the TIM interrupt source to be enabled.

*                  This parameter can be one of the following values:

*                       - TIM_IT_IC1: Input Capture 1 Interrupt source.

*                       - TIM_IT_OC1: Output Compare 1 Interrupt source.

*                       - TIM_IT_TO : Timer Overflow Interrupt source.

*                       - TIM_IT_IC2: Input Capture 2 Interrupt source.

*                       - TIM_IT_OC2: Output Compare 2 Interrupt source.

* Input3         : TIM_Newstate: specifies the new state of the  TIMx IT.

*                  This parameter can be one of the following values:

*                       - ENABLE : Enable the needed interrupt.

*                       - DISABLE: Disable the needed interrupt.

* Output         : None

* Return         : None

*******************************************************************************/

void TIM_ITConfig(TIM_TypeDef *TIMx, u16 TIM_IT, FunctionalState TIM_Newstate)

{

  if(TIM_Newstate == ENABLE)

  {

    TIMx->CR2 = (TIMx->CR2 & 0x00FF) | TIM_IT;

  }

  else

  {

    TIMx->CR2 &= ~TIM_IT;

  }

}

/*******************************************************************************

* Function Name  : TIM_DMAConfig

* Description    : Configures the Timer DMA source.

* Input1         : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Input2         : TIM_DMA_Souces: specifies the TIM DMA source to be selected.

*                  This parameter can be one of the following values:

*                       - TIM_DMA_IC1: Input Capture 1 DMA source.

*                       - TIM_DMA_OCA1 Output Compare 1 DMA source.

*                       - TIM_DMA_TO: Timer Overflow DMA source.

*                       - TIM_DMA_IC2: Input Capture 2 DMA source.

*                       - TIM_DMA_OC2: Output Compare 2 DMA source.

* Output         : None

* Return         : None

*******************************************************************************/

void TIM_DMAConfig(TIM_TypeDef *TIMx, u16 TIM_DMA_Sources)

{

  /* Reset the DMAS[1:0] bits */

  TIMx->CR1 &= TIM_DMA_CLEAR_MASK;

  /* Set the DMAS[1:0] bits according to TIM_DMA_Sources parameter */

  TIMx->CR1 |= TIM_DMA_Sources;

}

/*******************************************************************************

* Function Name  : TIM_DMACmd

* Description    : Enables or disables TIMx DMA peripheral.

* Input1         : TIMx: where x can be from 0 to 3 to select the TIM

*                  peripheral.

* Input2         : TIM_Newstate: new state of the  TIMx DMA peripheral

*                  This parameter can be one of the following values:

*                       - ENABLE : Enable the TIMx DMA.

*                       - DISABLE: Disable the TIMx DMA.

* Output         : None

* Return         : None

*******************************************************************************/

void TIM_DMACmd(TIM_TypeDef *TIMx, FunctionalState TIM_Newstate)

{

  if (TIM_Newstate == ENABLE)

  {

    TIMx->CR2 |= TIM_DMA_ENABLE;

  }

  else

  {

    TIMx->CR2 &= TIM_DMA_DISABLE;

  }

}

/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/