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FreeRTOS-Kernel/FreeRTOS/Demo/ARM7_STR75x_IAR/STLibrary/src/75x_tb.c
Richard Barry f508a5f653 Add FreeRTOS-Plus directory.
2012-08-11 21:34:11 +00:00

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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<54>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****/
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