Nucleo-F302R8 PWM on TIM1 chXn don't work

[ijona]

Hi,

i try to produce a PWM to learn but when i try to make this signal on TIM1 channelXn it doesn't matter (for example on PB13 and PA7).

On Channel1 all works fine (PC0).

What is the difference ?

[T J]

Pretty sure it works... pretty sure its your code...

But you don't post any code. " My car doesn't run, whats wrong with it ?"

Its not possible to diagnose your issue without information.

basically,

enable the Alternate pin function,

enable the Timer,

start the Timer,

enable the PWM Channel not at 0 dutycycle !

it will work.

[waclawek.jan]

If TIM1_CH1 works as PWM output, and you are sure you have set the TIM1_CH1N pin properly (note that both at PB13 and PA7 it's AF6, and not AF2 as it is for PC0 to be set as TIM1_CH1), then you need only to set TIM1_CCER.CC1NE and TIM1_CH1N starts to output the complement of TIM1_CH1.

JW

[ijona]

My Tim file is from the SMT32CubeMX like this :

/**
 ******************************************************************************
 * File Name : TIM.c
 * Description : This file provides code for the configuration
 * of the TIM instances.
 ******************************************************************************
 ** This notice applies to any and all portions of this file
 * that are not between comment pairs USER CODE BEGIN and
 * USER CODE END. Other portions of this file, whether 
 * inserted by the user or by software development tools
 * are owned by their respective copyright owners.
 *
 * COPYRIGHT(c) 2018 STMicroelectronics
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 3. Neither the name of STMicroelectronics nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ******************************************************************************
 */
 
/* Includes ------------------------------------------------------------------*/
#include "tim.h"
 
/* USER CODE BEGIN 0 */
 
/* USER CODE END 0 */
 
TIM_HandleTypeDef htim1;
 
/* TIM1 init function */
void MX_TIM1_Init(void)
{
 TIM_MasterConfigTypeDef sMasterConfig;
 TIM_OC_InitTypeDef sConfigOC;
 TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig;
 
 htim1.Instance = TIM1;
 htim1.Init.Prescaler = 1;
 htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
 htim1.Init.Period = 442;
 htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
 htim1.Init.RepetitionCounter = 0;
 htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
 if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
 sMasterConfig.MasterOutputTrigger2 = TIM_TRGO2_RESET;
 sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
 if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 sConfigOC.OCMode = TIM_OCMODE_PWM1;
 sConfigOC.Pulse = 200;
 sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
 sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
 sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
 sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
 sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
 if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 sConfigOC.OCNPolarity = TIM_OCNPOLARITY_LOW;
 if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 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.BreakFilter = 0;
 sBreakDeadTimeConfig.Break2State = TIM_BREAK2_DISABLE;
 sBreakDeadTimeConfig.Break2Polarity = TIM_BREAK2POLARITY_HIGH;
 sBreakDeadTimeConfig.Break2Filter = 0;
 sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
 if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK)
 {
 _Error_Handler(__FILE__, __LINE__);
 }
 
 HAL_TIM_MspPostInit(&htim1);
 
}
 
void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* tim_pwmHandle)
{
 
 if(tim_pwmHandle->Instance==TIM1)
 {
 /* USER CODE BEGIN TIM1_MspInit 0 */
 
 /* USER CODE END TIM1_MspInit 0 */
 /* TIM1 clock enable */
 __HAL_RCC_TIM1_CLK_ENABLE();
 /* USER CODE BEGIN TIM1_MspInit 1 */
 
 /* USER CODE END TIM1_MspInit 1 */
 }
}
void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
{
 
 GPIO_InitTypeDef GPIO_InitStruct;
 if(timHandle->Instance==TIM1)
 {
 /* USER CODE BEGIN TIM1_MspPostInit 0 */
 
 /* USER CODE END TIM1_MspPostInit 0 */
 
 /**TIM1 GPIO Configuration 
 PC0 ------> TIM1_CH1
 PA7 ------> TIM1_CH1N
 PB1 ------> TIM1_CH3N
 PA10 ------> TIM1_CH3 
 */
 GPIO_InitStruct.Pin = GPIO_PIN_0;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
 GPIO_InitStruct.Alternate = GPIO_AF2_TIM1;
 HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
 
 GPIO_InitStruct.Pin = GPIO_PIN_7|PWM_Pin;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
 GPIO_InitStruct.Alternate = GPIO_AF6_TIM1;
 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
 GPIO_InitStruct.Pin = GPIO_PIN_1;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
 GPIO_InitStruct.Alternate = GPIO_AF6_TIM1;
 HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
 
 /* USER CODE BEGIN TIM1_MspPostInit 1 */
 
 /* USER CODE END TIM1_MspPostInit 1 */
 }
 
}
 
void HAL_TIM_PWM_MspDeInit(TIM_HandleTypeDef* tim_pwmHandle)
{
 
 if(tim_pwmHandle->Instance==TIM1)
 {
 /* USER CODE BEGIN TIM1_MspDeInit 0 */
 
 /* USER CODE END TIM1_MspDeInit 0 */
 /* Peripheral clock disable */
 __HAL_RCC_TIM1_CLK_DISABLE();
 /* 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****/

And in my main file after init the timer i just lunch start like this :

 MX_TIM1_Init();
 
 HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1);
 HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_3);

With this i got an output on PA10 and PC0 but nothing on PB1 and PA7

So if i try to lunch  " HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_ALL); "

I have no output on any pins...

[waclawek.jan]

TIM_CCxNChannelCmd()?

I don't Cube

JW

[ijona]

I found !

To start PWM on "channelXn" use :  HAL_TIMEx_PWMN_Start(&htimx, TIM_CHANNEL_x);

Thank for your help !