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TIM1 OPM mode waveform generation.

parth kothiya
Senior

0693W000000UNcIQAW.jpgi want to generate above signal with variable Toff and Ton fix.

i generate code but i don't get my desired out put signal.

/**
  ******************************************************************************
  * File Name          : TIM.c
  * Description        : This file provides code for the configuration
  *                      of the TIM instances.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
 
/* Includes ------------------------------------------------------------------*/
#include "tim.h"
 
/* USER CODE BEGIN 0 */
 
/* USER CODE END 0 */
 
TIM_HandleTypeDef htim1;
 
/* TIM1 init function */
void MX_TIM1_Init(void)
{
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_SlaveConfigTypeDef sSlaveConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};
  TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};
 
  htim1.Instance = TIM1;
  htim1.Init.Prescaler = 179;
  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim1.Init.Period = 900;
  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim1.Init.RepetitionCounter = 0;
  htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_OnePulse_Init(&htim1, TIM_OPMODE_SINGLE) != HAL_OK)
  {
    Error_Handler();
  }
  sSlaveConfig.SlaveMode = TIM_SLAVEMODE_TRIGGER;
  sSlaveConfig.InputTrigger = TIM_TS_ETRF;
  sSlaveConfig.TriggerPolarity = TIM_TRIGGERPOLARITY_NONINVERTED;
  sSlaveConfig.TriggerPrescaler = TIM_TRIGGERPRESCALER_DIV1;
  sSlaveConfig.TriggerFilter = 0;
  if (HAL_TIM_SlaveConfigSynchro(&htim1, &sSlaveConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM2;
  sConfigOC.Pulse = 890;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_LOW;
  sConfigOC.OCNPolarity = TIM_OCNPOLARITY_LOW;
  sConfigOC.OCFastMode = TIM_OCFAST_ENABLE;
  sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
  sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
  if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
  sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
  sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
  sBreakDeadTimeConfig.DeadTime = 0;
  sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
  sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
  sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
  if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK)
  {
    Error_Handler();
  }
  HAL_TIM_MspPostInit(&htim1);
 
}
 
void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{
 
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(tim_baseHandle->Instance==TIM1)
  {
  /* USER CODE BEGIN TIM1_MspInit 0 */
 
  /* USER CODE END TIM1_MspInit 0 */
    /* TIM1 clock enable */
    __HAL_RCC_TIM1_CLK_ENABLE();
  
    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**TIM1 GPIO Configuration    
    PA12     ------> TIM1_ETR 
    */
    GPIO_InitStruct.Pin = GPIO_PIN_12;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
  /* USER CODE BEGIN TIM1_MspInit 1 */
 
  /* USER CODE END TIM1_MspInit 1 */
  }
}
void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
{
 
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(timHandle->Instance==TIM1)
  {
  /* USER CODE BEGIN TIM1_MspPostInit 0 */
 
  /* USER CODE END TIM1_MspPostInit 0 */
  
    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**TIM1 GPIO Configuration    
    PA8     ------> TIM1_CH1 
    */
    GPIO_InitStruct.Pin = GPIO_PIN_8;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
  /* USER CODE BEGIN TIM1_MspPostInit 1 */
 
  /* USER CODE END TIM1_MspPostInit 1 */
  }
 
}
 
void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
{
 
  if(tim_baseHandle->Instance==TIM1)
  {
  /* USER CODE BEGIN TIM1_MspDeInit 0 */
 
  /* USER CODE END TIM1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_TIM1_CLK_DISABLE();
  
    /**TIM1 GPIO Configuration    
    PA8     ------> TIM1_CH1
    PA12     ------> TIM1_ETR 
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_8|GPIO_PIN_12);
 
  /* USER CODE BEGIN TIM1_MspDeInit 1 */
 
  /* USER CODE END TIM1_MspDeInit 1 */
  }
} 
 
/* USER CODE BEGIN 1 */
 
/* USER CODE END 1 */
 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

in main .c

HAL_TIM_OnePulse_Start(&htim1,TIM_CHANNEL_1);

Then i got out put signal like below(yellow).0693W000000UNboQAG.jpg

so how can i generate signal as drawn in 1st image?

what is change in my code.

2 REPLIES 2

Which STM32?

Read out and check/post the TIM registers' content.

JW

berendi
Principal

Then do the same with the code I've posted to your previous question, and compare them.