Question
Timer PWM settings
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);