/**
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******************************************************************************
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* @file stm8s_tim4.c
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* @author MCD Application Team
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* @version V2.3.0
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* @date 16-June-2017
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* @brief This file contains all the functions for the TIM4 peripheral.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
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*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/software_license_agreement_liberty_v2
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm8s_tim4.h"
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/** @addtogroup STM8S_StdPeriph_Driver
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/**
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* @addtogroup TIM4_Public_Functions
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* @{
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*/
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/**
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* @brief Deinitializes the TIM4 peripheral registers to their default reset values.
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* @param None
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* @retval None
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*/
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void TIM4_DeInit(void)
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{
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TIM4->CR1 = TIM4_CR1_RESET_VALUE;
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TIM4->IER = TIM4_IER_RESET_VALUE;
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TIM4->CNTR = TIM4_CNTR_RESET_VALUE;
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TIM4->PSCR = TIM4_PSCR_RESET_VALUE;
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TIM4->ARR = TIM4_ARR_RESET_VALUE;
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TIM4->SR1 = TIM4_SR1_RESET_VALUE;
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}
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/**
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* @brief Initializes the TIM4 Time Base Unit according to the specified parameters.
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* @param TIM4_Prescaler specifies the Prescaler from TIM4_Prescaler_TypeDef.
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* @param TIM4_Period specifies the Period value.
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* @retval None
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*/
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void TIM4_TimeBaseInit(TIM4_Prescaler_TypeDef TIM4_Prescaler, uint8_t TIM4_Period)
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{
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/* Check TIM4 prescaler value */
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assert_param(IS_TIM4_PRESCALER_OK(TIM4_Prescaler));
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/* Set the Prescaler value */
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TIM4->PSCR = (uint8_t)(TIM4_Prescaler);
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/* Set the Autoreload value */
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TIM4->ARR = (uint8_t)(TIM4_Period);
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}
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/**
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* @brief Enables or disables the TIM4 peripheral.
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* @param NewState new state of the TIM4 peripheral. This parameter can
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* be ENABLE or DISABLE.
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* @retval None
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*/
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void TIM4_Cmd(FunctionalState NewState)
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{
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/* Check the parameters */
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assert_param(IS_FUNCTIONALSTATE_OK(NewState));
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/* set or Reset the CEN Bit */
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if (NewState != DISABLE)
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{
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TIM4->CR1 |= TIM4_CR1_CEN;
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}
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else
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{
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TIM4->CR1 &= (uint8_t)(~TIM4_CR1_CEN);
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}
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}
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/**
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* @brief Enables or disables the specified TIM4 interrupts.
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* @param NewState new state of the TIM4 peripheral.
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* This parameter can be: ENABLE or DISABLE.
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* @param TIM4_IT specifies the TIM4 interrupts sources to be enabled or disabled.
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* This parameter can be any combination of the following values:
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* - TIM4_IT_UPDATE: TIM4 update Interrupt source
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* @param NewState new state of the TIM4 peripheral.
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* @retval None
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*/
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void TIM4_ITConfig(TIM4_IT_TypeDef TIM4_IT, FunctionalState NewState)
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{
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/* Check the parameters */
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assert_param(IS_TIM4_IT_OK(TIM4_IT));
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assert_param(IS_FUNCTIONALSTATE_OK(NewState));
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if (NewState != DISABLE)
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{
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/* Enable the Interrupt sources */
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TIM4->IER |= (uint8_t)TIM4_IT;
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}
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else
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{
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/* Disable the Interrupt sources */
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TIM4->IER &= (uint8_t)(~TIM4_IT);
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}
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}
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/**
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* @brief Enables or Disables the TIM4 Update event.
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* @param NewState new state of the TIM4 peripheral Preload register. This parameter can
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* be ENABLE or DISABLE.
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* @retval None
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*/
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void TIM4_UpdateDisableConfig(FunctionalState NewState)
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{
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/* Check the parameters */
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assert_param(IS_FUNCTIONALSTATE_OK(NewState));
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/* Set or Reset the UDIS Bit */
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if (NewState != DISABLE)
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{
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TIM4->CR1 |= TIM4_CR1_UDIS;
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}
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else
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{
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TIM4->CR1 &= (uint8_t)(~TIM4_CR1_UDIS);
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}
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}
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/**
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* @brief Selects the TIM4 Update Request Interrupt source.
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* @param TIM4_UpdateSource specifies the Update source.
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* This parameter can be one of the following values
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* - TIM4_UPDATESOURCE_REGULAR
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* - TIM4_UPDATESOURCE_GLOBAL
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* @retval None
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*/
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void TIM4_UpdateRequestConfig(TIM4_UpdateSource_TypeDef TIM4_UpdateSource)
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{
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/* Check the parameters */
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assert_param(IS_TIM4_UPDATE_SOURCE_OK(TIM4_UpdateSource));
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/* Set or Reset the URS Bit */
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if (TIM4_UpdateSource != TIM4_UPDATESOURCE_GLOBAL)
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{
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TIM4->CR1 |= TIM4_CR1_URS;
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}
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else
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{
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TIM4->CR1 &= (uint8_t)(~TIM4_CR1_URS);
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}
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}
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/**
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* @brief Selects the TIM4s One Pulse Mode.
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* @param TIM4_OPMode specifies the OPM Mode to be used.
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* This parameter can be one of the following values
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* - TIM4_OPMODE_SINGLE
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* - TIM4_OPMODE_REPETITIVE
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* @retval None
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*/
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void TIM4_SelectOnePulseMode(TIM4_OPMode_TypeDef TIM4_OPMode)
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{
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/* Check the parameters */
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assert_param(IS_TIM4_OPM_MODE_OK(TIM4_OPMode));
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/* Set or Reset the OPM Bit */
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if (TIM4_OPMode != TIM4_OPMODE_REPETITIVE)
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{
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TIM4->CR1 |= TIM4_CR1_OPM;
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}
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else
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{
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TIM4->CR1 &= (uint8_t)(~TIM4_CR1_OPM);
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}
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}
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/**
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* @brief Configures the TIM4 Prescaler.
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* @param Prescaler specifies the Prescaler Register value
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* This parameter can be one of the following values
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* - TIM4_PRESCALER_1
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* - TIM4_PRESCALER_2
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* - TIM4_PRESCALER_4
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* - TIM4_PRESCALER_8
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* - TIM4_PRESCALER_16
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* - TIM4_PRESCALER_32
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* - TIM4_PRESCALER_64
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* - TIM4_PRESCALER_128
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* @param TIM4_PSCReloadMode specifies the TIM4 Prescaler Reload mode.
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* This parameter can be one of the following values
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* - TIM4_PSCRELOADMODE_IMMEDIATE: The Prescaler is loaded
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* immediately.
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* - TIM4_PSCRELOADMODE_UPDATE: The Prescaler is loaded at
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* the update event.
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* @retval None
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*/
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void TIM4_PrescalerConfig(TIM4_Prescaler_TypeDef Prescaler, TIM4_PSCReloadMode_TypeDef TIM4_PSCReloadMode)
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{
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/* Check the parameters */
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assert_param(IS_TIM4_PRESCALER_RELOAD_OK(TIM4_PSCReloadMode));
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assert_param(IS_TIM4_PRESCALER_OK(Prescaler));
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/* Set the Prescaler value */
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TIM4->PSCR = (uint8_t)Prescaler;
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/* Set or reset the UG Bit */
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TIM4->EGR = (uint8_t)TIM4_PSCReloadMode;
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}
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/**
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* @brief Enables or disables TIM4 peripheral Preload register on ARR.
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* @param NewState new state of the TIM4 peripheral Preload register.
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* This parameter can be ENABLE or DISABLE.
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* @retval None
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*/
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void TIM4_ARRPreloadConfig(FunctionalState NewState)
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{
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/* Check the parameters */
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assert_param(IS_FUNCTIONALSTATE_OK(NewState));
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/* Set or Reset the ARPE Bit */
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if (NewState != DISABLE)
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{
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TIM4->CR1 |= TIM4_CR1_ARPE;
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}
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else
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{
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TIM4->CR1 &= (uint8_t)(~TIM4_CR1_ARPE);
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}
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}
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/**
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* @brief Configures the TIM4 event to be generated by software.
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* @param TIM4_EventSource specifies the event source.
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* This parameter can be one of the following values:
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* - TIM4_EVENTSOURCE_UPDATE: TIM4 update Event source
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* @retval None
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*/
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void TIM4_GenerateEvent(TIM4_EventSource_TypeDef TIM4_EventSource)
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{
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/* Check the parameters */
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assert_param(IS_TIM4_EVENT_SOURCE_OK(TIM4_EventSource));
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/* Set the event sources */
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TIM4->EGR = (uint8_t)(TIM4_EventSource);
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}
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/**
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* @brief Sets the TIM4 Counter Register value.
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* @param Counter specifies the Counter register new value.
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* This parameter is between 0x00 and 0xFF.
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* @retval None
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*/
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void TIM4_SetCounter(uint8_t Counter)
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{
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/* Set the Counter Register value */
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TIM4->CNTR = (uint8_t)(Counter);
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}
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/**
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* @brief Sets the TIM4 Autoreload Register value.
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* @param Autoreload specifies the Autoreload register new value.
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* This parameter is between 0x00 and 0xFF.
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* @retval None
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*/
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void TIM4_SetAutoreload(uint8_t Autoreload)
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{
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/* Set the Autoreload Register value */
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TIM4->ARR = (uint8_t)(Autoreload);
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}
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/**
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* @brief Gets the TIM4 Counter value.
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* @param None
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* @retval Counter Register value.
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*/
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uint8_t TIM4_GetCounter(void)
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{
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/* Get the Counter Register value */
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return (uint8_t)(TIM4->CNTR);
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}
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/**
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* @brief Gets the TIM4 Prescaler value.
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* @param None
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* @retval Prescaler Register configuration value.
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*/
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TIM4_Prescaler_TypeDef TIM4_GetPrescaler(void)
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{
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/* Get the Prescaler Register value */
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return (TIM4_Prescaler_TypeDef)(TIM4->PSCR);
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}
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/**
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* @brief Checks whether the specified TIM4 flag is set or not.
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* @param TIM4_FLAG specifies the flag to check.
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* This parameter can be one of the following values:
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* - TIM4_FLAG_UPDATE: TIM4 update Flag
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* @retval FlagStatus The new state of TIM4_FLAG (SET or RESET).
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*/
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FlagStatus TIM4_GetFlagStatus(TIM4_FLAG_TypeDef TIM4_FLAG)
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{
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FlagStatus bitstatus = RESET;
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/* Check the parameters */
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assert_param(IS_TIM4_GET_FLAG_OK(TIM4_FLAG));
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if ((TIM4->SR1 & (uint8_t)TIM4_FLAG) != 0)
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{
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bitstatus = SET;
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}
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else
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{
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bitstatus = RESET;
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}
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return ((FlagStatus)bitstatus);
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}
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/**
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* @brief Clears the TIM4s pending flags.
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* @param TIM4_FLAG specifies the flag to clear.
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* This parameter can be one of the following values:
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* - TIM4_FLAG_UPDATE: TIM4 update Flag
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* @retval None.
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*/
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void TIM4_ClearFlag(TIM4_FLAG_TypeDef TIM4_FLAG)
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{
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/* Check the parameters */
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assert_param(IS_TIM4_GET_FLAG_OK(TIM4_FLAG));
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/* Clear the flags (rc_w0) clear this bit by writing 0. Writing 1 has no effect*/
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TIM4->SR1 = (uint8_t)(~TIM4_FLAG);
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}
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/**
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* @brief Checks whether the TIM4 interrupt has occurred or not.
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* @param TIM4_IT specifies the TIM4 interrupt source to check.
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* This parameter can be one of the following values:
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* - TIM4_IT_UPDATE: TIM4 update Interrupt source
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* @retval ITStatus The new state of the TIM4_IT (SET or RESET).
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*/
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ITStatus TIM4_GetITStatus(TIM4_IT_TypeDef TIM4_IT)
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{
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ITStatus bitstatus = RESET;
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uint8_t itstatus = 0x0, itenable = 0x0;
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/* Check the parameters */
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assert_param(IS_TIM4_IT_OK(TIM4_IT));
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itstatus = (uint8_t)(TIM4->SR1 & (uint8_t)TIM4_IT);
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itenable = (uint8_t)(TIM4->IER & (uint8_t)TIM4_IT);
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if ((itstatus != (uint8_t)RESET ) && (itenable != (uint8_t)RESET ))
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{
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bitstatus = (ITStatus)SET;
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}
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else
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{
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bitstatus = (ITStatus)RESET;
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}
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return ((ITStatus)bitstatus);
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}
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/**
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* @brief Clears the TIM4's interrupt pending bits.
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* @param TIM4_IT specifies the pending bit to clear.
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* This parameter can be one of the following values:
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* - TIM4_IT_UPDATE: TIM4 update Interrupt source
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* @retval None.
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*/
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void TIM4_ClearITPendingBit(TIM4_IT_TypeDef TIM4_IT)
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{
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/* Check the parameters */
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assert_param(IS_TIM4_IT_OK(TIM4_IT));
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/* Clear the IT pending Bit */
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TIM4->SR1 = (uint8_t)(~TIM4_IT);
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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