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/******************** (C) COPYRIGHT 2006 STMicroelectronics ********************

* File Name          : 75x_tb.c

* Author             : MCD Application Team

* Date First Issued  : 03/10/2006

* Description        : This file provides all the TB software functions.

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

* History:

* 07/17/2006 : V1.0

* 03/10/2006 : V0.1

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

* 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 "75x_tb.h"

#include "75x_mrcc.h"

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

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

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

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

#define TB_IT_Enable_Mask   0x7FFF

#define TB_IT_Clear_Mask    0x7FFF

#define TB_IC_Enable        0x0004

#define TB_ICPolarity_Set   0x0008

#define TB_ICPolarity_Reset 0xFFF7

#define TB_UFS_Reset        0xFFFE

#define TB_UFS_Set          0x0001

/* TB debug state */

#define TB_DBGC_Set    0x0400

#define TB_DBGC_Reset  0xFB7F

/* TB counter state */

#define TB_COUNTER_Reset  0x0002

#define TB_COUNTER_Start  0x0004

#define TB_COUNTER_Stop   0xFFFB

#define TB_SMS_EXTCLK_Set   0x0008

#define TB_SMS_RESETCLK_Set 0x0000

/* TB Slave Mode Enable Set/Reset value */

#define TB_SME_Reset  0x731B

#define TB_SME_Set    0x0004

/* TB Trigger Selection value */

#define TB_TS_IC1_Set  0x0200

/* TB SCR Masks bit */

#define TB_SlaveModeSelection_Mask        0x7307

#define TB_TriggerSelection_Mask          0x701F

/* Reset Register Masks */

#define TB_Prescaler_Reset_Mask   0x0000

#define TB_CounterMode_Mask       0xFF8F

#define TB_AutoReload_Reset_Mask  0xFFFF

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

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

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

* Function Name  : TB_DeInit

* Description    : Deinitializes the TB peripheral registers to their default

*                  reset values.

* Input          : None

* Output         : None

* Return         : None

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

void TB_DeInit(void)

{

 /* Enters and exits the TB peripheral to and from reset */

 MRCC_PeripheralSWResetConfig(MRCC_Peripheral_TB,ENABLE);

 MRCC_PeripheralSWResetConfig(MRCC_Peripheral_TB,DISABLE);

}

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

* Function Name  : TB_Init

* Description    : Initializes TB  peripheral according to the specified

*                  parameters in the TB_InitStruct.

* Input          : TB_InitStruct: pointer to a TB_InitTypeDef structure that

*                  contains the configuration information for the TB peripheral.

* Output         : None

* Return         : None

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

void TB_Init(TB_InitTypeDef* TB_InitStruct)

{

  /* Set the TB prescaler value */

  TB->PSC = TB_InitStruct->TB_Prescaler;

  /* Set the TB period value */

  TB->ARR = TB_InitStruct->TB_AutoReload;

  /* Set the corresponding counter mode */

  TB->CR = (TB->CR & TB_CounterMode_Mask) | TB_InitStruct->TB_CounterMode;

  /* Set the corresponding clock source */

  if(TB_InitStruct->TB_ClockSource == TB_ClockSource_CKRTC)

  {

    TB->SCR &= TB_SME_Reset & TB_SlaveModeSelection_Mask & TB_TriggerSelection_Mask;

    TB->SCR |= TB_SMS_EXTCLK_Set | TB_SME_Set | TB_TS_IC1_Set;

  }

  else

  {

    TB->SCR &= TB_SME_Reset & TB_SlaveModeSelection_Mask & TB_TriggerSelection_Mask;

  }

  if(TB_InitStruct->TB_Mode == TB_Mode_IC)

  {

    /* Set the corresponding value in TB SCR register */

    TB->SCR &= TB_SME_Reset & TB_SlaveModeSelection_Mask & TB_TriggerSelection_Mask;

    TB->SCR |= TB_SMS_RESETCLK_Set | TB_SME_Set | TB_TS_IC1_Set;

    /* Set the IC1 enable bit */

    TB->IMCR |= TB_IC_Enable;

    /* Set the input signal polarity */

    if (TB_InitStruct->TB_ICAPolarity == TB_ICAPolarity_Falling)

    {

      TB->IMCR |= TB_ICPolarity_Set;

    }

    else

    {

      TB->IMCR &= TB_ICPolarity_Reset;

    }

  }

}

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

* Function Name  : TB_StructInit

* Description    : Fills each TB_InitStruct member with its default value

* Input          : TB_InitStruct : pointer to a TB_InitTypeDef structure which

*                  will be initialized.

* Output         : None

* Return         : None

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

void TB_StructInit(TB_InitTypeDef *TB_InitStruct)

{

  TB_InitStruct->TB_Mode = TB_Mode_Timing;

  TB_InitStruct->TB_ClockSource = TB_ClockSource_CKTIM;

  TB_InitStruct->TB_CounterMode = TB_CounterMode_Up;

  TB_InitStruct->TB_ICAPolarity = TB_ICAPolarity_Rising;

  TB_InitStruct->TB_Prescaler = TB_Prescaler_Reset_Mask;

  TB_InitStruct->TB_AutoReload = TB_AutoReload_Reset_Mask;

}

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

* Function Name  : TB_Cmd

* Description    : Enables or disables the TB peripheral.

* Input          : Newstate: new state of the TB peripheral. This parameter can

*                  be: ENABLE or DISABLE.

* Output         : None

* Return         : None

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

void TB_Cmd(FunctionalState Newstate)

{

  if(Newstate == ENABLE)

  {

    TB->CR |= TB_COUNTER_Start;

  }

  else

  {

    TB->CR &= TB_COUNTER_Stop;

  }

}

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

* Function Name  : TB_ITConfig

* Description    : Enables or disables the specified TB interrupt.

* Input          : - TB_IT: specifies the TB interrupt sources to be enabled or

*                    disabled.

*                    This parameter can be any combination of the following values:

*                         - TB_IT_Update: TB Update interrupt

*                         - TB_IT_GlobalUpdate: TB Global Update interrupt

*                         - TB_IT_IC: TB Input Capture interrupt

*                  - Newstate:  new state of the specified TB interrupts.

*                    This parameter can be: ENABLE or DISABLE.

* Output         : None

* Return         : None

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

void TB_ITConfig(u16 TB_IT, FunctionalState Newstate)

{

  u16 TB_IT_Enable = 0;

  TB_IT_Enable = TB_IT & TB_IT_Enable_Mask;

  if(Newstate == ENABLE)

  {

   /* Update interrupt global source: overflow/undeflow, counter reset operation

   or slave mode controller in reset mode */

   if ((TB_IT & TB_IT_GlobalUpdate) == TB_IT_GlobalUpdate)

   {

     TB->CR &= TB_UFS_Reset;

    }

   /* Update interrupt source: counter overflow/underflow */

   else if ((TB_IT & TB_IT_Update) == TB_IT_Update)

   {

    TB->CR |= TB_UFS_Set;

   }

   /* Select and enable the interrupts requests */

   TB->RSR |= TB_IT_Enable;

   TB->RER |= TB_IT_Enable;

  }

  /* Disable the interrupts requests */

  else

  {

   TB->RSR &= ~TB_IT_Enable;

   TB->RER &= ~TB_IT_Enable;

  }

}

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

* Function Name  : TB_SetPrescaler

* Description    : Sets the TB Prescaler value.

* Input          : Prescaler: specifies the TB Prescaler value.

* Output         : None

* Return         : None

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

void TB_SetPrescaler(u16 Prescaler)

{

  /* Sets the prescaler value */

  TB->PSC = Prescaler;

}

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

* Function Name  : TB_ResetCounter

* Description    : Re-intializes the counter and generates an update of the

*                  registers.

* Input          : None

* Output         : None

* Return         : None

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

void TB_ResetCounter(void)

{

  /* Re-intializes TB counter */

  TB->CR |= TB_COUNTER_Reset;

}

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

* Function Name  : TB_DebugCmd

* Description    : Enables or disables TB peripheral Debug control.

* Input          : Newstate: new state of the TB Debug control.

*                  This parameter can be: ENABLE or DISABLE.

* Output         : None

* Return         : None

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

void TB_DebugCmd(FunctionalState Newstate)

{

  if(Newstate == ENABLE)

  {

    TB->CR |= TB_DBGC_Set;

  }

  else

  {

    TB->CR &= TB_DBGC_Reset;

  }

}

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

* Function Name  : TB_CounterModeConfig

* Description    : Configures the TB Counter Mode.

* Input          : TB_CounterMode: specifies the TB counter mode to be used.

*                  This parameter can be one of the following values:

*                         - TB_CounterMode_Up: TB Up Counting Mode

*                         - TB_CounterMode_Down: TB Down Counting Mode

*                         - TB_CounterMode_CenterAligned: TB Center Aligned Mode

* Output         : None

* Return         : None

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

void TB_CounterModeConfig(u16 TB_CounterMode)

{

  /* Counter mode configuration */

  TB->CR &= TB_CounterMode_Mask;

  TB->CR |= TB_CounterMode;

}

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

* Function Name  : TB_SLaveModeConfig

* Description    : Configures the TB slave Mode.

* Input          : TB_SMSMode: specifies the TB slave mode to be used.

*                  This parameter can be one of the following values:

*                         - TB_SMSMode_Trigger: The counter starts at a rising

*                           edge of the trigger

*                         - TB_SMSMode_Gated: The counter clock is enabled when

*                           trigger signal is high

*                         - TB_SMSMode_External: The rising edge of selected trigger

*                           clocks the counter

*                         - TB_SMSMode_Reset: The rising edge of the selected

*                           trigger signal resets the counter

* Output         : None

* Return         : None

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

void TB_SLaveModeConfig(u16 TB_SMSMode)

{

  TB->SCR &= TB_SME_Reset & TB_SlaveModeSelection_Mask & TB_TriggerSelection_Mask;

  TB->SCR |= TB_SME_Set | TB_SMSMode | TB_TS_IC1_Set;

}

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

* Function Name  : TB_GetCounter

* Description    : Gets the TB Counter value.

* Input          : None

* Output         : None

* Return         : The TB counter register value.

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

u16 TB_GetCounter(void)

{

  return TB->CNT;

}

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

* Function Name  : TB_GetICAP1

* Description    : Gets the TB Input capture value.

* Input          : None

* Output         : None

* Return         : The TB ICR1 register value.

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

u16 TB_GetICAP1(void)

{

  return TB->ICR1;

}

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

* Function Name  : TB_SetCounter

* Description    : Sets the TB Counter value.

* Input          : Counter: specifies the TB Counter value.

* Output         : None

* Return         : None

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

void TB_SetCounter(u16 Counter)

{

  TB->CNT = Counter;

}

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

* Function Name  : TB_GetFlagStatus

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

* Input          : TB_FLAG: specifies the flag to check.

*                  This parameter can be one of the following values:

*                         - TB_FLAG_IC: TB Input Capture flag

*                         - TB_FLAG_Update: TB update flag

* Output         : None

* Return         : The new state of the TB_FLAG (SET or RESET).

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

FlagStatus TB_GetFlagStatus(u16 TB_FLAG)

{

  if((TB->ISR & TB_FLAG) != RESET )

  {

   return SET;

  }

  else

  {

   return RESET;

  }

}

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

* Function Name  : TB_ClearFlag

* Description    : Clears the TB’s pending flags.

* Input          : TB_FLAG: specifies the flag to clear.

*                  This parameter can be any combination of the following values:

*                         - TB_FLAG_IC: TB Input Capture flag

*                         - TB_FLAG_Update: TB update flag

* Output         : None

* Return         : None

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

void TB_ClearFlag(u16 TB_FLAG)

{

  /* Clears the flags */

  TB->ISR &= ~TB_FLAG;

}

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

* Function Name  : TB_GetITStatus

* Description    : Checks whether the specified TB interrupt has occurred or not.

* Input          : TB_IT: specifies the interrupt to check.

*                  This parameter can be one of the following values:

*                       - TB_IT_Update: TB Update interrupt

*                       - TB_IT_GlobalUpdate: TB Global Update interrupt

*                       - TB_IT_IC: TB Input Capture interrupt

* Output         : None

* Return         : The new state of the TB_IT (SET or RESET).

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

ITStatus TB_GetITStatus(u16 TB_IT)

{

  u16 TB_IT_Check = 0;

  /* Calculates the pending bits to be checked */

  TB_IT_Check = TB_IT & TB_IT_Clear_Mask;

  if((TB->ISR & TB_IT_Check) != RESET )

  {

   return SET;

  }

  else

  {

   return RESET;

  }

}

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

* Function Name  : TB_ClearITPendingBit

* Description    : Clears the TB's interrupt pending bits.

* Input          : TB_IT: specifies the interrupt pending bit to clear.

*                  This parameter can be any combination of the following values:

*                         - TB_IT_Update: TB Update interrupt

*                         - TB_IT_GlobalUpdate: TB Global Update interrupt

*                         - TB_IT_IC: TB Input Capture interrupt

* Output         : None

* Return         : None

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

void TB_ClearITPendingBit(u16 TB_IT)

{

  u16 TB_IT_Clear = 0;

  /* Calculates the pending bits to be cleared */

  TB_IT_Clear = TB_IT & TB_IT_Clear_Mask;

  /* Clears the pending bits */

  TB->ISR &= ~TB_IT_Clear;

}

/******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/