Timer PWM settings

[er3481]

Hi,

I am trying to use timer pwm outputs for Timer4, Timer2 and Timer1 bolcks. I am using initial functions below, but i can not see pwm signals from outputs. What is wrong with the codes below ? Any advises.

/**TIMER2 PWM SETUPS**/
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10|GPIO_Pin_11;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
    TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBase_InitStructure.TIM_Period = (uint16_t)100;
    TIM_TimeBase_InitStructure.TIM_Prescaler = (uint16_t)64;
    TIM_TimeBaseInit(TIM2, &TIM_TimeBase_InitStructure);
    TIM_OC_InitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OC_InitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
    TIM_OC_InitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set;
    TIM_OC_InitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    TIM_OC_InitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
    TIM_OC_InitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OC_InitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
    TIM_OC_InitStructure.TIM_Pulse = (uint16_t)50;
 
    TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Enable);
    TIM_OC3Init(TIM2, &TIM_OC_InitStructure);
 
    TIM_OC4PreloadConfig(TIM2, TIM_OCPreload_Enable);
    TIM_OC4Init(TIM2, &TIM_OC_InitStructure);
 
    TIM_CCPreloadControl(TIM2, ENABLE);
    TIM_CtrlPWMOutputs(TIM2, ENABLE);
    TIM_Cmd(TIM2, ENABLE);
    /***********************************************************************/
    
    /**TIMER4 PWM SETUPS**/
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_AFIO , ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOD, &GPIO_InitStructure);
    
    TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBase_InitStructure.TIM_Period = (uint16_t)100;
    TIM_TimeBase_InitStructure.TIM_Prescaler = (uint16_t)64;
    TIM_TimeBaseInit(TIM4, &TIM_TimeBase_InitStructure);
    TIM_OC_InitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OC_InitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
    TIM_OC_InitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set;
    TIM_OC_InitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    TIM_OC_InitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
    TIM_OC_InitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OC_InitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
    TIM_OC_InitStructure.TIM_Pulse = (uint16_t)50;
 
    TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable);
    TIM_OC1Init(TIM4, &TIM_OC_InitStructure);
 
    TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable);
    TIM_OC2Init(TIM4, &TIM_OC_InitStructure);
 
    TIM_OC3PreloadConfig(TIM4, TIM_OCPreload_Enable);
    TIM_OC3Init(TIM4, &TIM_OC_InitStructure);
 
    TIM_OC4PreloadConfig(TIM4, TIM_OCPreload_Enable);
    TIM_OC4Init(TIM4, &TIM_OC_InitStructure);
 
    TIM_CCPreloadControl(TIM4, ENABLE);
    TIM_CtrlPWMOutputs(TIM4, ENABLE);
    TIM_Cmd(TIM4, ENABLE);
    /*************************************************************************/
    
    /** TIMER1 PWM SETUPS **/
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9|GPIO_Pin_11|GPIO_Pin_13|GPIO_Pin_14;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOE, &GPIO_InitStructure);
    TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBase_InitStructure.TIM_Period = (uint16_t)100;
    TIM_TimeBase_InitStructure.TIM_Prescaler = (uint16_t)64;
    TIM_TimeBaseInit(TIM1, &TIM_TimeBase_InitStructure);
    TIM_OC_InitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OC_InitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
    TIM_OC_InitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set;
    TIM_OC_InitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    TIM_OC_InitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
    TIM_OC_InitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OC_InitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
    TIM_OC_InitStructure.TIM_Pulse = (uint16_t)50;
 
    TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
    TIM_OC1Init(TIM1, &TIM_OC_InitStructure);
 
    TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);
    TIM_OC2Init(TIM1, &TIM_OC_InitStructure);
 
    TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);
    TIM_OC3Init(TIM1, &TIM_OC_InitStructure);
 
    TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable);
    TIM_OC4Init(TIM1, &TIM_OC_InitStructure);
 
    TIM_CCPreloadControl(TIM1, ENABLE);
    TIM_CtrlPWMOutputs(TIM1, ENABLE);
    TIM_Cmd(TIM1, ENABLE);

[waclawek.jan]

What hardware is this? Blinking a LED works? Setting relevant pins as GPIO Output and toggling them "manually" works?

Try one timer at a time. TIM1 is different than others, it's an Advanced Timer and needs one extra step: to have TIM1_BDTR.MOE set.

Read out and check/post TIM and relevant GPIO registers content.

JW

[er3481]

Hi @Community member​ 

I have solved the problem with "GPIO_PinRemapConfig" function for Timer1, Timer2 and Timer4 bloacks. The problem was solved. Thanks...