235 lines
9.2 KiB
C
235 lines
9.2 KiB
C
/******************** (C) COPYRIGHT 2003 STMicroelectronics ********************
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* File Name : tim.c
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* Author : MCD Application Team
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* Date First Issued : 09/08/2003
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* Description : This file provides all the TIM software functions
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********************************************************************************
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* History:
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* 13/01/2006 : V3.1
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* 24/05/2005 : V3.0
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* 30/11/2004 : V2.0
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* 14/07/2004 : V1.3
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* 01/01/2004 : V1.2
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*******************************************************************************
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THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH
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CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
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AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT
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OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
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OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION
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CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*******************************************************************************/
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#include "tim.h"
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/*******************************************************************************
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* Function Name : TIM_Init
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* Description : This routine is used to Initialize the TIM peripheral
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* registers to their default values.
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* Input : TIM Timer to Initialize(TIM0, TIM1, TIM2, TIM3).
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* Return : None.
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*******************************************************************************/
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void TIM_Init( TIM_TypeDef *TIMx )
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{
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TIMx->CR1 = 0x0000;
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TIMx->CR2 = 0x0000;
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TIMx->SR = 0x0000;
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}
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/*******************************************************************************
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* Function Name : TIM_ICAPModeConfig
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* Description : This routine is used to configure the input capture feature
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* Input : (1) TIM Timer (TIM0, TIM1, TIM2, TIM3).
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* : (2) Input Capture Channel (TIM_CHANNEL_A, TIM_CHANNEL_B).
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* : (3) Active Edge :(TIM_RISING,TIM_FALLING).
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* Return : None.
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*******************************************************************************/
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void TIM_ICAPModeConfig ( TIM_TypeDef *TIMx,
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TIM_Channels Xchannel,
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TIM_Clock_Edges Xedge )
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{
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switch (Xchannel)
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{
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case TIM_CHANNEL_A :
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if (Xedge == TIM_RISING) TIMx->CR1 |= TIM_IEDGA_Mask; else TIMx->CR1 &= ~TIM_IEDGA_Mask;
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break;
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case TIM_CHANNEL_B :
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if (Xedge == TIM_RISING) TIMx->CR1 |= TIM_IEDGB_Mask; else TIMx->CR1 &= ~TIM_IEDGB_Mask;
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break;
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}
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}
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/*******************************************************************************
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* Function Name : TIM_OCMPModeConfig
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* Description : This routine is used to configure the output compare feature.
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* Input : (1) TIM Timer(TIM0, TIM1, TIM2, TIM3).
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* : (2) OCMP Channel (TIM_CHANNEL_A, TIM_CHANNEL_B).
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* : (3) Pulse Length.
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* : (4) OC_Mode (TIM_TIMING,TIM_WAVE).
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* : (5) Level (TIM_HIGH,TIM_LOW).
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* Return : None.
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*******************************************************************************/
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void TIM_OCMPModeConfig ( TIM_TypeDef *TIMx,
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TIM_Channels Xchannel,
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u16 XpulseLength,
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TIM_OC_Modes Xmode,
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TIM_Logic_Levels Xlevel )
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{
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u16 Tmp1 = 0x0000;
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u16 Tmp2 = TIMx->CR2;
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TIMx->CR2 = 0x0000;
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/* Start The TIM Counter */
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TIMx->CR1 = TIM_EN_Mask;
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/* Update the CR2 Register */
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TIMx->CR2 = Tmp2;
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switch ( Xmode )
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{
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case TIM_TIMING :
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/* Output Compare Used only for Internal Timing Operation */
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Tmp1 = Xchannel == TIM_CHANNEL_A ? Tmp1 & ~TIM_OCAE_Mask : Tmp1 & ~TIM_OCBE_Mask;
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break;
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case TIM_WAVE :
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/* Output Compare Used for external wave generation */
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Tmp1 = Xchannel == TIM_CHANNEL_A ? TIM_OCAE_Mask : TIM_OCBE_Mask;
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if ( Xlevel == TIM_HIGH )
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Tmp1 = Xchannel == TIM_CHANNEL_A ? Tmp1 | TIM_OLVLA_Mask : Tmp1 | TIM_OLVLB_Mask;
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else
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Tmp1 = Xchannel == TIM_CHANNEL_A ? Tmp1 & ~TIM_OLVLA_Mask : Tmp1 & ~TIM_OLVLB_Mask;
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break;
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}
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if ( Xchannel == TIM_CHANNEL_A )
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TIMx->OCAR = (XpulseLength);
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else
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TIMx->OCBR = ( XpulseLength);
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TIMx->CNTR = 0x0000;
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TIMx->CR1 |= Tmp1;
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}
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/*******************************************************************************
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* Function Name : TIM_OPModeConfig
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* Description : This routine is used to configure the one pulse mode.
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* Input : (1) TIM Timer(TIM0, TIM1, TIM2, TIM3).
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* : (2) XpulseLength : Length of the pulse.
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* : (3) Level1 :Level during the pulse (TIM_HIGH,TIM_LOW).
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* : (4) Level2 :Level after the pulse (TIM_HIGH,TIM_LOW).
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* : (5) Activation Edge :High or Low on ICAP A (TIM_RISING,
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* TIM_FALLING).
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* Return : None.
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*******************************************************************************/
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void TIM_OPModeConfig ( TIM_TypeDef *TIMx,
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u16 XpulseLength,
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TIM_Logic_Levels XLevel1,
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TIM_Logic_Levels XLevel2,
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TIM_Clock_Edges Xedge )
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{
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u16 Tmp = 0;
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/* Set the Level During the pulse */
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if (XLevel1 == TIM_HIGH) Tmp |= TIM_OLVLB_Mask;
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/* Set the Level after After the pulse */
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if (XLevel2 == TIM_HIGH) Tmp |= TIM_OLVLA_Mask;
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/* Set the Activation Edge on the INCAP 1 */ /* to be verified*/
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if (Xedge == TIM_RISING) Tmp |= TIM_IEDGA_Mask;
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/* Set the Output Compare Function */
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Tmp |= TIM_OCAE_Mask;
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/* Set the One pulse mode */
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Tmp |= TIM_OPM_Mask;
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/* Update the CR1 register Value */
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TIMx->CR1 = Tmp;
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/* Set the Pulse length */
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TIMx->OCAR = XpulseLength;
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}
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/*******************************************************************************
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* Function Name : TIM_PWMOModeConfig
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* Description : This routine is used to configure the PWM in output mode.
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* Input : (1) TIM Timer(TIM0, TIM1, TIM2, TIM3).
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* : (2) DutyCycle.
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* : (3) Level 1 : During the Duty Cycle(TIM_HIGH,TIM_LOW).
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* : (4) Full period
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* : (5) Level 2 : After the pulse(TIM_HIGH,TIM_LOW).
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* Return : None.
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*******************************************************************************/
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void TIM_PWMOModeConfig ( TIM_TypeDef *TIMx,
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u16 XDutyCycle,
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TIM_Logic_Levels XLevel1,
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u16 XFullperiod,
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TIM_Logic_Levels XLevel2)
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{
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u16 Tmp = TIMx->CR1;
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/* Set the level during the pulse */
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Tmp = XLevel1 == TIM_HIGH ? Tmp | TIM_OLVLB_Mask : Tmp & ~TIM_OLVLB_Mask;
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/* Set the level after After the pulse */
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Tmp = XLevel2 == TIM_HIGH ? Tmp | TIM_OLVLA_Mask : Tmp & ~TIM_OLVLA_Mask;
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/* Set the OCAE */
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Tmp |= TIM_OCAE_Mask;
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/* Set the PWM Bit */
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Tmp |= TIM_PWM_Mask;
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/* Update the CR1 */
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TIMx->CR1 = Tmp;
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/* Set the Duty Cycle value */
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if ( XDutyCycle < 5 ) XDutyCycle = 5;
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TIMx->OCAR = XDutyCycle - 5;
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/* Set the Full Period */
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TIMx->OCBR = XFullperiod - 5;
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}
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/*******************************************************************************
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* Function Name : TIM_PWMIModeConfig
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* Description : This routine is used to configure the PWM in input mode.
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* Input : (1) TIM Timer(TIM0, TIM1, TIM2, TIM3).
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* : (2) First Activation Edge(TIM_RISING,TIM_FALLING).
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* Output : None.
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*******************************************************************************/
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void TIM_PWMIModeConfig ( TIM_TypeDef *TIMx, TIM_Clock_Edges Xedge )
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{
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u16 Tmp = TIMx->CR1;
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/* Set the first edge Level */
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Tmp = Xedge == TIM_RISING ? Tmp | TIM_IEDGA_Mask : Tmp & ~TIM_IEDGA_Mask;
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/* Set the Second edge Level ( Opposit of the first level )*/
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Tmp = Xedge == TIM_FALLING ? Tmp | TIM_IEDGB_Mask : Tmp & ~TIM_IEDGB_Mask;
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/* Set the PWM I Bit */
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Tmp |= TIM_PWMI_Mask;
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/* Update the CR1 */
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TIMx->CR1 = Tmp;
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}
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/*******************************************************************************
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* Function Name : TIM_PWMIValue
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* Description : This routine is used to get the PWMI values.
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* Input : TIM Timer(TIM0, TIM1, TIM2, TIM3).
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* Return : PWMI_parameters(Pulse, Period).
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*******************************************************************************/
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PWMI_parameters TIM_PWMIValue ( TIM_TypeDef *TIMx )
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{
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PWMI_parameters Tmp;
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Tmp.Pulse = TIMx->ICBR;
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Tmp.Period = TIMx->ICAR;
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return Tmp;
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}
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/*******************************************************************************
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* Function Name : TIM_CounterConfig
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* Description : This routine is used to configure the Timer conuter.
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* Input : (1) TIM Timer(TIM0, TIM1, TIM2, TIM3).
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* : (2) Xoperation(TIM_START, TIM_STOP, TIM_CLEAR).
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* Return : None.
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*******************************************************************************/
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void TIM_CounterConfig ( TIM_TypeDef *TIMx, TIM_CounterOperations Xoperation)
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{
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switch ( Xoperation )
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{
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case TIM_START :
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TIMx->CR1 |= TIM_EN_Mask;
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break;
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case TIM_STOP :
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TIMx->CR1 &= ~TIM_EN_Mask;
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break;
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case TIM_CLEAR :
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TIMx->CNTR = 0x1234;
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break;
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}
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}
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/******************* (C) COPYRIGHT 2003 STMicroelectronics *****END OF FILE****/
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