URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [ARM7_STR75x_IAR/] [STLibrary/] [src/] [75x_tim.c] - Rev 867
Go to most recent revision | Compare with Previous | Blame | View Log
/******************** (C) COPYRIGHT 2006 STMicroelectronics ******************** * File Name : 75x_tim.c * Author : MCD Application Team * Date First Issued : 03/10/2006 * Description : This file provides all the TIM 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_tim.h" #include "75x_mrcc.h" /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* TIM interrupt masks */ #define TIM_IT_Clear_Mask 0x7FFF #define TIM_IT_Enable_Mask 0x7FFF /* TIM Input Capture Selection Set/Reset */ #define TIM_IC1S_Set 0x0001 #define TIM_IC1S_Reset 0x003E /* TIM Input Capture Selection Set/Reset */ #define TIM_IC2S_Set 0x0002 #define TIM_IC2S_Reset 0x003D /* TIM_SCR Masks bit */ #define TIM_Encoder_Mask 0x731C #define TIM_SlaveModeSelection_Mask 0x7307 #define TIM_TriggerSelection_Mask 0x701F #define TIM_InternalTriggerSelection_Mask 0x031F /* TIM Encoder mode Set value */ #define TIM_Encoder1_Set 0x0001 #define TIM_Encoder2_Set 0x0002 #define TIM_Encoder3_Set 0x0003 /* TIM Slave Mode Enable Set/Reset value */ #define TIM_SME_Reset 0x731B #define TIM_SME_Set 0x0004 /* TIM Internal Trigger Selection value */ #define TIM_ITS_TIM0 0x1000 #define TIM_ITS_TIM1 0x2000 #define TIM_ITS_TIM2 0x3000 #define TIM_ITS_PWM 0x4000 /* TIM Trigger Selection value */ #define TIM_TS_IC1_Set 0x0200 #define TIM_TS_IC2_Set 0x0300 /* TIM Slave Mode selction external clock Set value */ #define TIM_SMS_EXTCLK_Set 0x0008 #define TIM_SMS_RESETCLK_Set 0x0000 /* TIM_CR Masks bit */ #define TIM_DBASE_Mask 0x077F #define TIM_MasterModeSelection_Mask 0xFC7F #define TIM_CounterMode_Mask 0xFF8F /* TIM Update flag selection Set/Reset value */ #define TIM_UFS_Reset 0xFFFE #define TIM_UFS_Set 0x0001 /* TIM Counter value */ #define TIM_COUNTER_Reset 0x0002 #define TIM_COUNTER_Start 0x0004 #define TIM_COUNTER_Stop 0xFFFB /* TIM One pulse Mode set value */ #define TIM_OPM_Set 0x0008 #define TIM_OPM_Reset 0xFFF7 /* TIM Debug Mode Set/Reset value */ #define TIM_DBGC_Set 0x0400 #define TIM_DBGC_Reset 0xFB7F /* TIM Input Capture Enable/Disable value */ #define TIM_IC1_Enable 0x0004 #define TIM_IC2_Enable 0x0010 /* TIM Input Capture Polarity Set/Reset value */ #define TIM_IC1P_Set 0x0008 #define TIM_IC2P_Set 0x0020 #define TIM_IC1P_Reset 0x0037 #define TIM_IC2P_Reset 0x001F /* TIM Output Compare Polarity Set/Reset value */ #define TIM_OC1P_Set 0x0020 #define TIM_OC2P_Set 0x2000 #define TIM_OC1P_Reset 0x3F1F #define TIM_OC2P_Reset 0x1F3F /* TIM Output Compare control mode constant */ #define TIM_OCControl_PWM 0x000C #define TIM_OCControl_OCToggle 0x0006 #define TIM_OCControl_OCInactive 0x0004 #define TIM_OCControl_OCActive 0x0002 #define TIM_OCControl_OCTiming 0x0000 /* TIM Output Compare mode Enable value */ #define TIM_OC1_Enable 0x0010 #define TIM_OC2_Enable 0x1000 /* TIM Output Compare mode Mask value */ #define TIM_OC1C_Mask 0x3F31 #define TIM_OC2C_Mask 0x313F /* TIM Preload bit Set/Reset value */ #define TIM_PLD1_Set 0x0001 #define TIM_PLD1_Reset 0xFFFE #define TIM_PLD2_Set 0x0100 #define TIM_PLD2_Reset 0xFEFF /* TIM OCRM Set/Reset value */ #define TIM_OCRM_Set 0x0080 #define TIM_OCRM_Reset 0x030D /* Reset Register Masks */ #define TIM_Pulse2_Reset_Mask 0x0000 #define TIM_Prescaler_Reset_Mask 0x0000 #define TIM_Pulse1_Reset_Mask 0x0000 #define TIM_Period_Reset_Mask 0xFFFF #define TIM_Counter_Reset 0x0002 /* Private function prototypes -----------------------------------------------*/ static void ICAP_ModuleConfig(TIM_TypeDef* TIMx, TIM_InitTypeDef* TIM_InitStruct); static void Encoder_ModeConfig(TIM_TypeDef* TIMx, TIM_InitTypeDef* TIM_InitStruct); static void OCM_ModuleConfig(TIM_TypeDef* TIMx, TIM_InitTypeDef* TIM_InitStruct); /* Private functions ---------------------------------------------------------*/ /****************************************************************************** * Function Name : TIM_DeInit * Description : Deinitializes TIM peripheral registers to their default reset * values. * Input : TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * Output : None * Return : None *******************************************************************************/ void TIM_DeInit(TIM_TypeDef *TIMx) { if(TIMx == TIM0) { MRCC_PeripheralSWResetConfig(MRCC_Peripheral_TIM0,ENABLE); MRCC_PeripheralSWResetConfig(MRCC_Peripheral_TIM0,DISABLE); } else if(TIMx == TIM1) { MRCC_PeripheralSWResetConfig(MRCC_Peripheral_TIM1,ENABLE); MRCC_PeripheralSWResetConfig(MRCC_Peripheral_TIM1,DISABLE); } else if(TIMx == TIM2) { MRCC_PeripheralSWResetConfig(MRCC_Peripheral_TIM2,ENABLE); MRCC_PeripheralSWResetConfig(MRCC_Peripheral_TIM2,DISABLE); } } /******************************************************************************* * Function Name : TIM_Init * Description : Initializes the TIMx peripheral according to the specified * parameters in the TIM_InitStruct . * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - 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) { /* Set the prescaler value */ TIMx->PSC = TIM_InitStruct->TIM_Prescaler; /* Select the clock source */ TIM_ClockSourceConfig(TIMx, TIM_InitStruct->TIM_ClockSource, TIM_InitStruct->TIM_ExtCLKEdge); /* Select the counter mode */ TIMx->CR &= TIM_CounterMode_Mask; TIMx->CR |= TIM_InitStruct->TIM_CounterMode; /* Set the period value */ TIMx->ARR = TIM_InitStruct->TIM_Period; switch(TIM_InitStruct->TIM_Mode) { case TIM_Mode_OCTiming: case TIM_Mode_OCActive: case TIM_Mode_OCInactive: case TIM_Mode_OCToggle: case TIM_Mode_PWM: OCM_ModuleConfig(TIMx, TIM_InitStruct); break; case TIM_Mode_PWMI: case TIM_Mode_IC: ICAP_ModuleConfig(TIMx, TIM_InitStruct); break; case TIM_Mode_Encoder1: case TIM_Mode_Encoder2: case TIM_Mode_Encoder3: Encoder_ModeConfig(TIMx, TIM_InitStruct); break; case TIM_Mode_OPM_PWM: case TIM_Mode_OPM_Toggle: case TIM_Mode_OPM_Active: /* Output module configuration */ OCM_ModuleConfig(TIMx, TIM_InitStruct); /* Input module configuration */ ICAP_ModuleConfig(TIMx, TIM_InitStruct); /* Set the slave mode to trigger Mode */ TIMx->SCR |= TIM_SynchroMode_Trigger; /* Repetitive pulse state selection */ if(TIM_InitStruct->TIM_RepetitivePulse == TIM_RepetitivePulse_Disable) { TIMx->CR |= TIM_OPM_Set; } else { TIMx->CR &= TIM_OPM_Reset; } break; default: break; } } /******************************************************************************* * Function Name : TIM_StructInit * Description : Fills each TIM_InitStruct member with its default value. * Input : TIM_InitStruct : pointer to a TIM_InitTypeDef structure * which will be initialized. * Output : None * Return : None. *******************************************************************************/ void TIM_StructInit(TIM_InitTypeDef *TIM_InitStruct) { /* Set the default configuration */ TIM_InitStruct->TIM_Mode = TIM_Mode_OCTiming; TIM_InitStruct->TIM_Prescaler = TIM_Prescaler_Reset_Mask; TIM_InitStruct->TIM_ClockSource = TIM_ClockSource_Internal; TIM_InitStruct->TIM_ExtCLKEdge = TIM_ExtCLKEdge_Rising; TIM_InitStruct->TIM_CounterMode = TIM_CounterMode_Up; TIM_InitStruct->TIM_Period = TIM_Period_Reset_Mask; TIM_InitStruct->TIM_Channel = TIM_Channel_ALL; TIM_InitStruct->TIM_Pulse1 = TIM_Pulse1_Reset_Mask; TIM_InitStruct->TIM_Pulse2 = TIM_Pulse2_Reset_Mask; TIM_InitStruct->TIM_RepetitivePulse = TIM_RepetitivePulse_Disable; TIM_InitStruct->TIM_Polarity1 = TIM_Polarity1_Low; TIM_InitStruct->TIM_Polarity2 = TIM_Polarity2_Low; TIM_InitStruct->TIM_IC1Selection = TIM_IC1Selection_TI1; TIM_InitStruct->TIM_IC2Selection = TIM_IC2Selection_TI1; TIM_InitStruct->TIM_IC1Polarity = TIM_IC1Polarity_Rising; TIM_InitStruct->TIM_IC2Polarity = TIM_IC2Polarity_Rising; TIM_InitStruct->TIM_PWMI_ICSelection = TIM_PWMI_ICSelection_TI1; TIM_InitStruct->TIM_PWMI_ICPolarity = TIM_PWMI_ICPolarity_Rising; } /******************************************************************************* * Function Name : TIM_Cmd * Description : Enables or disables the specified TIM peripheral. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - Newstate: new state of the TIMx peripheral. * This parameter can be: ENABLE or DISABLE. * Output : None * Return : None *******************************************************************************/ void TIM_Cmd(TIM_TypeDef *TIMx, FunctionalState Newstate) { if(Newstate == ENABLE) { TIMx->CR |= TIM_COUNTER_Start; } else { TIMx->CR &= TIM_COUNTER_Stop; } } /******************************************************************************* * Function Name : TIM_ITConfig * Description : Enables or disables the TIM interrupts. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - TIM_IT: specifies the TIM interrupts sources to be enabled * or disabled. * This parameter can be any combination of the following values: * - TIM_IT_IC1: Input Capture 1 Interrupt * - TIM_IT_OC1: Output Compare 1 Interrupt * - TIM_IT_Update: Timer update Interrupt * - TIM_IT_GlobalUpdate: Timer global update Interrupt * - TIM_IT_IC2: Input Capture 2 Interrupt * - TIM_IT_OC2: Output Compare 2 Interrupt * - Newstate: new state of the specified TIMx interrupts. * This parameter can be: ENABLE or DISABLE. * Output : None * Return : None *******************************************************************************/ void TIM_ITConfig(TIM_TypeDef *TIMx, u16 TIM_IT, FunctionalState Newstate) { u16 TIM_IT_Enable = 0; TIM_IT_Enable = TIM_IT & TIM_IT_Enable_Mask; if(Newstate == ENABLE) { /* Update interrupt global source: overflow/undeflow, counter reset operation or slave mode controller in reset mode */ if((TIM_IT & TIM_IT_GlobalUpdate) == TIM_IT_GlobalUpdate) { TIMx->CR &= TIM_UFS_Reset; } /* Update interrupt source: counter overflow/underflow */ else if((TIM_IT & TIM_IT_Update) == TIM_IT_Update) { TIMx->CR |= TIM_UFS_Set; } /* Select and enable the interrupts requests */ TIMx->RSR |= TIM_IT_Enable; TIMx->RER |= TIM_IT_Enable; } /* Disable the interrupts requests */ else { TIMx->RSR &= ~TIM_IT_Enable; TIMx->RER &= ~TIM_IT_Enable; } } /******************************************************************************* * Function Name : TIM_PreloadConfig * Description : Enables or disables TIM peripheral Preload register on OCRx. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - TIM_Channel: specifies the TIM channel to be used. * This parameter can be one of the following values: * - TIM_Channel_1: TIM Channel 1 is used * - TIM_Channel_2: TIM Channel 2 is used * - TIM_Channel_ALL: TIM Channel 1and 2 are used * - Newstate: new state of the TIMx peripheral Preload register * This parameter can be: ENABLE or DISABLE. * Output : None * Return : None *******************************************************************************/ void TIM_PreloadConfig(TIM_TypeDef *TIMx, u16 TIM_Channel, FunctionalState Newstate) { if(Newstate == ENABLE) { switch (TIM_Channel) { case TIM_Channel_1: TIMx->OMR1 |= TIM_PLD1_Set; break; case TIM_Channel_2: TIMx->OMR1 |= TIM_PLD2_Set; break; case TIM_Channel_ALL: TIMx->OMR1 |= TIM_PLD1_Set | TIM_PLD2_Set; break; default: break; } } else { switch (TIM_Channel) { case TIM_Channel_1: TIMx->OMR1 &= TIM_PLD1_Reset; break; case TIM_Channel_2: TIMx->OMR1 &= TIM_PLD2_Reset; break; case TIM_Channel_ALL: TIMx->OMR1 &= TIM_PLD1_Reset & TIM_PLD2_Reset; break; default: break; } } } /******************************************************************************* * Function Name : TIM_DMAConfig * Description : Configures the TIM0’s DMA interface. * Input : - TIM_DMASources: specifies the DMA Request sources. * This parameter can be any combination of the following values: * - TIM_DMASource_OC1: Output Compare 1 DMA source * - TIM_DMASource_OC2: Output Compare 2 DMA source * - TIM_DMASource_IC1: Input Capture 1 DMA source * - TIM_DMASource_IC2: Input Capture 2 DMA source * - TIM_DMASource_Update: Timer Update DMA source * - TIM_OCRMState: the state of output compare request mode. * This parameter can be one of the following values: * - TIM_OCRMState_Enable * - TIM_OCRMState_Disable * - TIM_DMABase:DMA Base address. * This parameter can be one of the following values: * TIM_DMABase_CR, TIM_DMABase_SCR, TIM_DMABase_IMCR, * TIM_DMABase_OMR1, TIM_DMABase_RSR, * TIM_DMABase_RER, TIM_DMABase_ISR, TIM_DMABase_CNT, * TIM_DMABase_PSC, TIM_DMABase_ARR, TIM_DMABase_OCR1, * TIM_DMABase_OCR2, TIM_DMABase_ICR1, TIM_DMABase_ICR2 * Output : None * Return : None *******************************************************************************/ void TIM_DMAConfig(u16 TIM_DMASources, u16 TIM_OCRMState, u16 TIM_DMABase) { /* Select the DMA requests */ TIM0->RSR &= TIM_DMASources; /* Set the OCRM state */ if(TIM_OCRMState == TIM_OCRMState_Enable) { TIM0->RSR |= TIM_OCRM_Set; } else { TIM0->RSR &= TIM_OCRM_Reset; } /* Set the DMA Base address */ TIM0->CR &= TIM_DBASE_Mask; TIM0->CR |= TIM_DMABase; } /******************************************************************************* * Function Name : TIM_DMACmd * Description : Enables or disables the TIM0’s DMA interface. * Input : - TIM_DMASources: specifies the DMA Request sources. * This parameter can be any combination of the following values: * - TIM_DMASource_OC1: Output Compare 1 DMA source * - TIM_DMASource_OC2: Output Compare 2 DMA source * - TIM_DMASource_IC1: Input Capture 1 DMA source * - TIM_DMASource_IC2: Input Capture 2 DMA source * - TIM_DMASource_Update: Timer Update DMA source * - Newstate: new state of the DMA Request sources. * This parameter can be: ENABLE or DISABLE. * Output : None * Return : None *******************************************************************************/ void TIM_DMACmd(u16 TIM_DMASources, FunctionalState Newstate) { if(Newstate == ENABLE) { TIM0->RER |= TIM_DMASources; } else { TIM0->RER &= ~TIM_DMASources; } } /******************************************************************************* * Function Name : TIM_ClockSourceConfig * Description : Configures the TIM clock source. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - TIM_ClockSource: specifies the TIM clock source to be * selected. * This parameter can be one of the following values: * - TIM_ClockSource_Internal: CK_TIM internal clock * - TIM_ClockSource_TI11: External input pin TI1 * connected to IC1 channel. * - TIM_ClockSource_TI12: External input pin TI1 * connected to IC2 channel. * - TIM_ClockSource_TI22: External input pin TI2 * connected to IC2 channel. * - TIM_ClockSource_TI21: External input pin TI2 * connected to IC1 channel. * - TIM_ExtCLKEdge: specifies the External input signal edge. * This parameter can be one of the following values: * - TIM_ExtCLKEdge_Falling : Falling edge selected. * - TIM_ExtCLKEdge_Rising : Rising edge selected. * Output : None * Return : None *******************************************************************************/ void TIM_ClockSourceConfig(TIM_TypeDef *TIMx, u16 TIM_ClockSource, u16 TIM_ExtCLKEdge) { if(TIM_ClockSource == TIM_ClockSource_Internal) { /* CK_TIM is used as clock source */ TIMx->SCR &= TIM_SME_Reset & TIM_SlaveModeSelection_Mask & TIM_TriggerSelection_Mask; } else /* Input Captures are used as TIM external clock */ { TIMx->SCR &= TIM_SME_Reset & TIM_SlaveModeSelection_Mask & TIM_TriggerSelection_Mask; TIMx->SCR |= TIM_SMS_EXTCLK_Set | TIM_SME_Set; if((TIM_ClockSource == TIM_ClockSource_TI11) || (TIM_ClockSource == TIM_ClockSource_TI21)) /* Input Capture 1 is selected */ { /* Input capture Enable */ TIMx->IMCR |= TIM_IC1_Enable; TIMx->SCR |= TIM_TS_IC1_Set; if(TIM_ExtCLKEdge == TIM_ExtCLKEdge_Falling) /* Set the corresponding polarity */ { TIMx->IMCR |= TIM_IC1P_Set; } else { TIMx->IMCR &= TIM_IC1P_Reset; } if(TIM_ClockSource == TIM_ClockSource_TI11) { /* External signal TI1 connected to IC1 channel */ TIMx->IMCR &= TIM_IC1S_Reset; } else { /* External signal TI2 connected to IC1 channel */ TIMx->IMCR |= TIM_IC1S_Set; } } else /* Input Capture 2 is selected */ { /* Input capture Enable */ TIMx->IMCR |= TIM_IC2_Enable; TIMx->SCR |= TIM_TS_IC2_Set; if(TIM_ExtCLKEdge == TIM_ExtCLKEdge_Falling) /* Set the corresponding polarity */ { TIMx->IMCR |= TIM_IC2P_Set; } else { TIMx->IMCR &= TIM_IC2P_Reset; } if(TIM_ClockSource == TIM_ClockSource_TI22) { /* External signal TI2 connected to IC2 channel */ TIMx->IMCR &= TIM_IC2S_Reset; } else { /* External signal TI1 connected to IC2 channel */ TIMx->IMCR |= TIM_IC2S_Set; } } } } /******************************************************************************* * Function Name : TIM_SetPrescaler * Description : Sets the TIM prescaler value. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * - Prescaler: TIM prescaler new value. * Output : None * Return : None *******************************************************************************/ void TIM_SetPrescaler(TIM_TypeDef* TIMx, u16 Prescaler) { TIMx->PSC = Prescaler; } /******************************************************************************* * Function Name : TIM_SetPeriod * Description : Sets the TIM period value. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * - Period: TIM period new value. * Output : None * Return : None *******************************************************************************/ void TIM_SetPeriod(TIM_TypeDef* TIMx, u16 Period) { TIMx->ARR = Period; } /******************************************************************************* * Function Name : TIM_SetPulse * Description : Sets the TIM pulse value. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * - TIM_Channel: specifies the TIM channel to be used. * This parameter can be one of the following values: * - TIM_Channel_1: TIM Channel 1 is used * - TIM_Channel_2: TIM Channel 2 is used * - TIM_Channel_ALL: TIM Channel 1and 2 are used * - Pulse: TIM pulse new value. * Output : None * Return : None *******************************************************************************/ void TIM_SetPulse(TIM_TypeDef* TIMx, u16 TIM_Channel, u16 Pulse) { /* Set Channel 1 pulse value */ if(TIM_Channel == TIM_Channel_1) { TIMx->OCR1 = Pulse; } /* Set Channel 2 pulse value */ else if(TIM_Channel == TIM_Channel_2) { TIMx->OCR2 = Pulse; } /* Set Channel 1 and Channel 2 pulse values */ else if(TIM_Channel == TIM_Channel_ALL) { TIMx->OCR1 = Pulse; TIMx->OCR2 = Pulse; } } /******************************************************************************* * Function Name : TIM_GetICAP1 * Description : Gets the Input Capture 1 value. * Input : TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * Output : None * Return : Input Capture 1 Register value. *******************************************************************************/ u16 TIM_GetICAP1(TIM_TypeDef *TIMx) { return TIMx->ICR1; } /******************************************************************************* * Function Name : TIM_GetICAP2 * Description : Gets the Input Capture 2 value. * Input : TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * Output : None * Return : Input Capture 2 Register value *******************************************************************************/ u16 TIM_GetICAP2(TIM_TypeDef *TIMx) { return TIMx->ICR2; } /******************************************************************************* * Function Name : TIM_GetPWMIPulse * Description : Gets the PWM Input pulse value. * Input : TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * Output : None * Return : Input Capture 2 Register value *******************************************************************************/ u16 TIM_GetPWMIPulse(TIM_TypeDef *TIMx) { return TIMx->ICR2; } /******************************************************************************* * Function Name : TIM_GetPWMIPeriod * Description : Gets the PWM Input period value. * Input : TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * Output : None * Return : Input Capture 1 Register value *******************************************************************************/ u16 TIM_GetPWMIPeriod(TIM_TypeDef *TIMx) { return TIMx->ICR1; } /******************************************************************************* * Function Name : TIM_DebugCmd * Description : Enables or disables the specified TIM peripheral Debug control. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * - Newstate: new state of the TIMx Debug control. This parameter can be: ENABLE or DISABLE. * Output : None * Return : None *******************************************************************************/ void TIM_DebugCmd(TIM_TypeDef *TIMx, FunctionalState Newstate) { if(Newstate == ENABLE) { TIMx->CR |= TIM_DBGC_Set; } else { TIMx->CR &= TIM_DBGC_Reset; } } /******************************************************************************* * Function Name : TIM_CounterModeConfig * Description : Specifies the Counter Mode to be used. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - TIM_CounterMode: specifies the Counter Mode to be used * This parameter can be one of the following values: * - TIM_CounterMode_Up: TIM Up Counting Mode * - TIM_CounterMode_Down: TIM Down Counting Mode * - TIM_CounterMode_CenterAligned1: TIM Center Aligned Mode1 * - TIM_CounterMode_CenterAligned2: TIM Center Aligned Mode2 * - TIM_CounterMode_CenterAligned3: TIM Center Aligned Mode3 * Output : None * Return : None *******************************************************************************/ void TIM_CounterModeConfig(TIM_TypeDef* TIMx, u16 TIM_CounterMode) { /* Counter mode configuration */ TIMx->CR &= TIM_CounterMode_Mask; TIMx->CR |= TIM_CounterMode; } /******************************************************************************* * Function Name : TIM_ForcedOCConfig * Description : Forces the TIM output waveform to active or inactive level. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - TIM_Channel: specifies the TIM channel to be used. * This parameter can be one of the following values: * - TIM_Channel_1: Timer Channel 1 is used * - TIM_Channel_2: Timer Channel 2 is used * - TIM_Channel_ALL: Timer Channel 1 and 2 are used * - TIM_ForcedAction: specifies the forced Action to be set to * the output waveform. * This parameter can be one of the following values: * - TIM_ForcedAction_Active: Force active level on OCxREF * - TIM_ForcedAction_InActive: Force inactive level on * OCxREF. * Output : None * Return : None *******************************************************************************/ void TIM_ForcedOCConfig(TIM_TypeDef* TIMx, u16 TIM_Channel,u16 TIM_ForcedAction) { /* Channel 1 Forced Output Compare mode configuration */ if(TIM_Channel == TIM_Channel_1) { TIMx->OMR1 &= TIM_OC1C_Mask; TIMx->OMR1 |= TIM_ForcedAction; } /* Channel 2 Forced Output Compare mode configuration */ else { if(TIM_Channel == TIM_Channel_2) { TIMx->OMR1 &= TIM_OC2C_Mask; TIMx->OMR1 |= (TIM_ForcedAction<<8); } /* Channel 1 and Channel 2 Forced Output Compare mode configuration */ else { TIMx->OMR1 &= TIM_OC1C_Mask & TIM_OC2C_Mask; TIMx->OMR1 |= TIM_ForcedAction |(TIM_ForcedAction<<8); } } } /******************************************************************************* * Function Name : TIM_ResetCounter * Description : Re-intializes the TIM counter and generates an update of the * registers. * Input : TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * Output : None * Return : None *******************************************************************************/ void TIM_ResetCounter(TIM_TypeDef* TIMx) { /* Re-intialize the TIM counter */ TIMx->CR |= TIM_COUNTER_Reset; } /******************************************************************************* * Function Name : TIM_SynchroConfig * Description : Synchronizes two Timers in a specified mode. * Input : - Master: specifies the peripheral master. * This parameter can be one of the following values: * PWM_Master, TIM0_Master, TIM1_Master or TIM2_Master. * - Slave: specifies the peripheral slave. * This parameter can be one of the following values: * PWM_Slave, TIM0_Slave, TIM1_Slave or TIM2_Slave. * - TIM_SynchroAction: specifies the synchronization Action to * be used. * This parameter can be one of the following values: * - TIM_SynchroAction_Enable: The CNT_EN bit is used as TRGO * - TIM_SynchroAction_Update: The Update event is used as TRGO * - TIM_SynchroAction_Reset: The CNT_RST bit is used as TRGO * - TIM_SynchroAction_OC: The OC1 signal is used as TRGO * - TIM_SynchroMode: specifies the synchronization Mode to be used. * This parameter can be one of the following values: * - TIM_SynchroMode_Gated: Both start and stop of the * counter is controlled. * - TIM_SynchroMode_Trigger: Only the start of the * counter is controlled. * - TIM_SynchroMode_External: The rising edge of selected trigger * clocks the counter. * - TIM_SynchroMode_Reset: The rising edge of the selected trigger * signal resets the counter and generates an update of the registers. * Output : None * Return : None *******************************************************************************/ void TIM_SynchroConfig(Master_TypeDef Master, Slave_TypeDef Slave, u16 TIM_SynchroAction, u16 TIM_SynchroMode) { switch (Slave) { case PWM_Slave: { PWM->SCR &= TIM_SME_Reset & TIM_TriggerSelection_Mask & TIM_SlaveModeSelection_Mask & TIM_InternalTriggerSelection_Mask; PWM->SCR |= TIM_SynchroMode | TIM_SME_Set; if(Master == TIM1_Master) { /* Set the internal trigger */ PWM->SCR |= TIM_ITS_TIM1; /* Set the synchronization action */ TIM1->CR &= TIM_MasterModeSelection_Mask; TIM1->CR |= TIM_SynchroAction; } else if(Master == TIM0_Master) { /* Set the internal trigger */ PWM->SCR |= TIM_ITS_TIM0; /* Set the synchronization action */ TIM0->CR &= TIM_MasterModeSelection_Mask; TIM0->CR |= TIM_SynchroAction; } else if(Master == TIM2_Master) { /* Set the internal trigger */ PWM->SCR |= TIM_ITS_TIM2; /* Set the synchronization action */ TIM2->CR &= TIM_MasterModeSelection_Mask; TIM2->CR |= TIM_SynchroAction; } } break; case TIM0_Slave: { TIM0->SCR &= TIM_SME_Reset & TIM_TriggerSelection_Mask & TIM_SlaveModeSelection_Mask & TIM_InternalTriggerSelection_Mask; TIM0->SCR |= TIM_SynchroMode | TIM_SME_Set; if(Master == PWM_Master) { /* Set the internal trigger */ TIM0->SCR |= TIM_ITS_PWM; /* Set the synchronization action */ PWM->CR &= TIM_MasterModeSelection_Mask; PWM->CR |= TIM_SynchroAction; } else if(Master == TIM1_Master) { /* Set the internal trigger */ TIM0->SCR |= TIM_ITS_TIM1; /* Set the synchronization action */ TIM1->CR &= TIM_MasterModeSelection_Mask; TIM1->CR |= TIM_SynchroAction; } else if(Master == TIM2_Master) { /* Set the internal trigger */ TIM0->SCR |= TIM_ITS_TIM2; /* Set the synchronization action */ TIM2->CR &= TIM_MasterModeSelection_Mask; TIM2->CR |= TIM_SynchroAction; } } break; case TIM1_Slave: { TIM1->SCR &= TIM_SME_Reset & TIM_TriggerSelection_Mask & TIM_SlaveModeSelection_Mask & TIM_InternalTriggerSelection_Mask; TIM1->SCR |= TIM_SynchroMode | TIM_SME_Set; if(Master == PWM_Master) { /* Set the internal trigger */ TIM1->SCR |= TIM_ITS_PWM; /* Set the synchronization action */ PWM->CR &= TIM_MasterModeSelection_Mask; PWM->CR |= TIM_SynchroAction; } else if(Master == TIM0_Master) { /* Set the internal trigger */ TIM1->SCR |= TIM_ITS_TIM0; /* Set the synchronization action */ TIM0->CR &= TIM_MasterModeSelection_Mask; TIM0->CR |= TIM_SynchroAction; } else if(Master == TIM2_Master) { /* Set the internal trigger */ TIM1->SCR |= TIM_ITS_TIM2; /* Set the synchronization action */ TIM2->CR &= TIM_MasterModeSelection_Mask; TIM2->CR |= TIM_SynchroAction; } } break; case TIM2_Slave: { TIM2->SCR &= TIM_SME_Reset & TIM_TriggerSelection_Mask & TIM_SlaveModeSelection_Mask & TIM_InternalTriggerSelection_Mask; TIM2->SCR |= TIM_SynchroMode | TIM_SME_Set; if(Master == PWM_Master) { /* Internal trigger selection */ TIM2->SCR |= TIM_ITS_PWM; /* Set the synchronization action */ PWM->CR &= TIM_MasterModeSelection_Mask; PWM->CR |= TIM_SynchroAction; } else if(Master == TIM1_Master) { /* Internal trigger selection */ TIM2->SCR |= TIM_ITS_TIM1; /* Set the synchronization action */ TIM1->CR &= TIM_MasterModeSelection_Mask; TIM1->CR |= TIM_SynchroAction; } else if(Master == TIM0_Master) { /* Internal trigger selection */ TIM2->SCR |= TIM_ITS_TIM0; /* Set the synchronization action */ TIM0->CR &= TIM_MasterModeSelection_Mask; TIM0->CR |= TIM_SynchroAction; } } break; default: break; } } /******************************************************************************* * Function Name : TIM_GetFlagStatus * Description : Checks whether the specified TIM flag is set or not. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - TIM_FLAG: specifies the flag to check. * This parameter can be one of the following values: * - TIM_FLAG_IC1: Input Capture 1 Flag * - TIM_FLAG_OC1: Output Compare 1 Flag * - TIM_FLAG_Update: Timer update Flag * - TIM_FLAG_IC2: Input Capture 2 Flag * - TIM_FLAG_OC2: Output Compare 2 Flag * Output : None * Return : The new state of TIM_FLAG (SET or RESET). *******************************************************************************/ FlagStatus TIM_GetFlagStatus(TIM_TypeDef* TIMx, u16 TIM_FLAG) { if((TIMx->ISR & TIM_FLAG) != RESET ) { return SET; } else { return RESET; } } /******************************************************************************* * Function Name : TIM_ClearFlag * Description : Clears the TIMx's pending flags. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - TIM_FLAG: specifies the flag bit to clear. * This parameter can be any combination of the following values: * - TIM_FLAG_IC1: Timer Input Capture 1 flag * - TIM_FLAG_OC1: Timer Output Compare 1 flag * - TIM_FLAG_Update: Timer update flag * - TIM_FLAG_IC2: Timer Input Capture 2 flag * - TIM_FLAG_OC2: Timer Output Compare 2 flag * Output : None * Return : None *******************************************************************************/ void TIM_ClearFlag(TIM_TypeDef* TIMx, u16 TIM_FLAG) { /* Clear the flags */ TIMx->ISR &= ~TIM_FLAG; } /******************************************************************************* * Function Name : TIM_GetITStatus * Description : Checks whether the specified TIM interrupt has occurred or not. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - TIM_IT: specifies the TIM interrupt source to check. * This parameter can be one of the following values: * - TIM_IT_IC1: Input Capture 1 interrupt * - TIM_IT_OC1: Output Compare 1 interrupt * - TIM_IT_Update: Timer update interrupt * - TIM_IT_GlobalUpdate: Timer global update interrupt * - TIM_IT_IC2: Input Capture 2 interrupt * - TIM_IT_OC2: Output Compare 2 interrupt * Output : None * Return : The new state of TIM_IT(SET or RESET). *******************************************************************************/ ITStatus TIM_GetITStatus(TIM_TypeDef* TIMx, u16 TIM_IT) { u16 TIM_IT_Check = 0; /* Calculates the pending bits to be checked */ TIM_IT_Check = TIM_IT & TIM_IT_Clear_Mask; if((TIMx->ISR & TIM_IT_Check) != RESET ) { return SET; } else { return RESET; } } /******************************************************************************* * Function Name : TIM_ClearITPendingBit * Description : Clears the TIM's interrupt pending bits. * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral. * - TIM_IT: specifies the interrupt pending bit to clear. * This parameter can be one of the following values: * - TIM_IT_IC1: Input Capture 1 Interrupt * - TIM_IT_OC1: Output Compare 1 Interrupt * - TIM_IT_Update: Timer update Interrupt * - TIM_IT_GlobalUpdate: Timer global update Interrupt * - TIM_IT_IC2: Input Capture 2 Interrupt * - TIM_IT_OC2: Output Compare 2 Interrupt * Output : None * Return : None *******************************************************************************/ void TIM_ClearITPendingBit(TIM_TypeDef* TIMx, u16 TIM_IT) { u16 TIM_IT_Clear = 0; /* Calculate the pending bits to be cleared */ TIM_IT_Clear = TIM_IT & TIM_IT_Clear_Mask; /* Clear the pending bits */ TIMx->ISR &= ~TIM_IT_Clear; } /******************************************************************************* * Function Name : OCM_ModuleConfig * Description : Output Compare Module configuration * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * - TIM_InitStruct: pointer to a TIM_InitTypeDef structure that * contains the configuration information for the specified TIM * peripheral. * Output : None * Return : None *******************************************************************************/ static void OCM_ModuleConfig(TIM_TypeDef* TIMx, TIM_InitTypeDef* TIM_InitStruct) { u16 TIM_OCControl = 0x0000; if(TIM_InitStruct->TIM_Mode == TIM_Mode_OCTiming) { TIM_OCControl = TIM_OCControl_OCTiming; } else { if((TIM_InitStruct->TIM_Mode == TIM_Mode_OCActive) || (TIM_InitStruct->TIM_Mode == TIM_Mode_OPM_Active)) { TIM_OCControl = TIM_OCControl_OCActive; } else { if(TIM_InitStruct->TIM_Mode == TIM_Mode_OCInactive) { TIM_OCControl = TIM_OCControl_OCInactive; } else { if((TIM_InitStruct->TIM_Mode == TIM_Mode_OCToggle) || (TIM_InitStruct->TIM_Mode == TIM_Mode_OPM_Toggle)) { TIM_OCControl = TIM_OCControl_OCToggle; } else { TIM_OCControl = TIM_OCControl_PWM; } } } } if(TIM_InitStruct->TIM_Channel == TIM_Channel_1) { /* Configure Channel 1 on Output Compare mode */ TIMx->OMR1 &= TIM_OC1C_Mask; TIMx->OMR1 |= TIM_OCControl|TIM_OC1_Enable; TIMx->OMR1 |= TIM_PLD1_Set; TIMx->OCR1 = TIM_InitStruct->TIM_Pulse1; /* Set the OC1 wave polarity */ if(TIM_InitStruct->TIM_Polarity1 == TIM_Polarity1_Low) { TIMx->OMR1 |= TIM_OC1P_Set; } else { TIMx->OMR1 &= TIM_OC1P_Reset; } } else { if(TIM_InitStruct->TIM_Channel == TIM_Channel_2) { /* Configure Channel 2 on Output Compare mode */ TIMx->OMR1 &= TIM_OC2C_Mask; TIMx->OMR1 |= TIM_OCControl<<8|TIM_OC2_Enable; TIMx->OMR1 |= TIM_PLD2_Set; TIMx->OCR2 = TIM_InitStruct->TIM_Pulse2; /* Set the OCB wave polarity */ if(TIM_InitStruct->TIM_Polarity2 == TIM_Polarity2_Low) { TIMx->OMR1 |= TIM_OC2P_Set; } else { TIMx->OMR1 &= TIM_OC2P_Reset; } } /* Configure Channel 1 and Channel 2 on Output Compare mode */ else { TIMx->OMR1 &= TIM_OC1C_Mask & TIM_OC2C_Mask; TIMx->OMR1 |= TIM_OCControl|(TIM_OCControl<<8)|TIM_OC1_Enable|TIM_OC2_Enable| TIM_PLD1_Set|TIM_PLD2_Set; TIMx->OCR1 = TIM_InitStruct->TIM_Pulse1; TIMx->OCR2 = TIM_InitStruct->TIM_Pulse2; /* Set the OC1 wave polarity */ if(TIM_InitStruct->TIM_Polarity1 == TIM_Polarity1_Low) { TIMx->OMR1 |= TIM_OC1P_Set; } else { TIMx->OMR1 &= TIM_OC1P_Reset; } /* Set the OC2 wave polarity */ if(TIM_InitStruct->TIM_Polarity2 == TIM_Polarity2_Low) { TIMx->OMR1 |= TIM_OC2P_Set; } else { TIMx->OMR1 &= TIM_OC2P_Reset; } } } } /******************************************************************************* * Function Name : ICAP_ModuleConfig * Description : Input Capture Module configuration * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * - TIM_InitStruct: pointer to a TIM_InitTypeDef structure that * contains the configuration information for the specified TIM * peripheral. * Output : None * Return : None *******************************************************************************/ static void ICAP_ModuleConfig(TIM_TypeDef* TIMx, TIM_InitTypeDef* TIM_InitStruct) { if(TIM_InitStruct->TIM_Mode == TIM_Mode_PWMI) { /* PWM input mode configuration */ TIMx->SCR |= TIM_TS_IC1_Set|TIM_SMS_RESETCLK_Set|TIM_SME_Set; /* Channel 1 and channel 2 input selection */ if(TIM_InitStruct->TIM_PWMI_ICSelection == TIM_PWMI_ICSelection_TI1) { TIMx->IMCR &= TIM_IC1S_Reset; TIMx->IMCR |= TIM_IC2S_Set; } else { TIMx->IMCR |= TIM_IC1S_Set; TIMx->IMCR &= TIM_IC2S_Reset; } /* Channel polarity */ if(TIM_InitStruct->TIM_PWMI_ICPolarity == TIM_PWMI_ICPolarity_Rising) { TIMx->IMCR &= TIM_IC1P_Reset; TIMx->IMCR |= TIM_IC2P_Set; } else { TIMx->IMCR |= TIM_IC1P_Set; TIMx->IMCR &= TIM_IC2P_Reset; } /* Input capture Enable */ TIMx->IMCR |= TIM_IC1_Enable |TIM_IC2_Enable; } else { if(TIM_InitStruct->TIM_Channel == TIM_Channel_1) { /* Input Capture 1 mode configuration */ TIMx->SCR &= TIM_TriggerSelection_Mask & TIM_SlaveModeSelection_Mask; TIMx->SCR |= TIM_TS_IC1_Set|TIM_SMS_RESETCLK_Set|TIM_SME_Set; /* Channel 1 input selection */ if(TIM_InitStruct->TIM_IC1Selection == TIM_IC1Selection_TI1) { TIMx->IMCR &= TIM_IC1S_Reset; } else { TIMx->IMCR |= TIM_IC1S_Set; } /* Channel 1 polarity */ if(TIM_InitStruct->TIM_IC1Polarity == TIM_IC1Polarity_Rising) { TIMx->IMCR &= TIM_IC1P_Reset; } else { TIMx->IMCR |= TIM_IC1P_Set; } /* Input capture Enable */ TIMx->IMCR |= TIM_IC1_Enable; } else { /* Input Capture 2 mode configuration */ TIMx->SCR &= (TIM_TriggerSelection_Mask & TIM_SlaveModeSelection_Mask); TIMx->SCR |= TIM_TS_IC2_Set|TIM_SMS_RESETCLK_Set|TIM_SME_Set; /* Channel 2 input selection */ if(TIM_InitStruct->TIM_IC2Selection == TIM_IC2Selection_TI2) { TIMx->IMCR &= TIM_IC2S_Reset; } else { TIMx->IMCR |= TIM_IC2S_Set; } /* Channel 2 polarity */ if(TIM_InitStruct->TIM_IC2Polarity == TIM_IC2Polarity_Rising) { TIMx->IMCR &= TIM_IC2P_Reset; } else { TIMx->IMCR |= TIM_IC2P_Set; } /* Input capture Enable */ TIMx->IMCR |= TIM_IC2_Enable; } } } /******************************************************************************* * Function Name : Encoder_ModeConfig * Description : Encoder Mode configuration * Input : - TIMx: where x can be 0, 1 or 2 to select the TIM peripheral * - TIM_InitStruct: pointer to a TIM_InitTypeDef structure that * contains the configuration information for the specified TIM * peripheral. * Output : None * Return : None *******************************************************************************/ static void Encoder_ModeConfig(TIM_TypeDef* TIMx, TIM_InitTypeDef* TIM_InitStruct) { /* Set Encoder mode */ TIMx->SCR &= TIM_Encoder_Mask; if(TIM_InitStruct->TIM_Mode == TIM_Mode_Encoder1) { TIMx->SCR |= TIM_Encoder1_Set; } else if (TIM_InitStruct->TIM_Mode == TIM_Mode_Encoder2) { TIMx->SCR |= TIM_Encoder2_Set; } else { TIMx->SCR |= TIM_Encoder3_Set; } /* Channel 1 input selection */ if(TIM_InitStruct->TIM_IC1Selection == TIM_IC1Selection_TI2) { TIMx->IMCR |= TIM_IC1S_Set; } else { TIMx->IMCR &= TIM_IC1S_Reset; } /* Channel 2 input selection */ if(TIM_InitStruct->TIM_IC2Selection == TIM_IC2Selection_TI1) { TIMx->IMCR |= TIM_IC2S_Set; } else { TIMx->IMCR &= TIM_IC2S_Reset; } /* Channel 1 polarity */ if(TIM_InitStruct->TIM_IC1Polarity == TIM_IC1Polarity_Falling) { TIMx->IMCR |= TIM_IC1P_Set; } else { TIMx->IMCR &= TIM_IC1P_Reset; } /* Channel 2 polarity */ if(TIM_InitStruct->TIM_IC2Polarity == TIM_IC2Polarity_Falling) { TIMx->IMCR |= TIM_IC2P_Set; } else { TIMx->IMCR &= TIM_IC2P_Reset; } } /******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/
Go to most recent revision | Compare with Previous | Blame | View Log