Posted on October 04, 2013 at 23:37
This is my working F0-Code: (well working in terms of having some kind of output, but nothing that drives a BLDC)
void PWM_Demo::Init()
{
/* GPIO Configuration */
Config();
/* TIM1 Configuration */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 , ENABLE);
/* Time Base configuration */
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Prescaler = 48 - 1;
TIM_TimeBaseStructure.TIM_Period = 20000 - 1;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
/* Channel 1, 2, 3 and 4 Configuration in PWM mode */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; // Wichtig
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
TIM_OCInitStructure.TIM_Pulse = 1100;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_OCInitStructure.TIM_Pulse = 1600;
TIM_OC2Init(TIM1, &TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_OCInitStructure.TIM_Pulse = 2100;
TIM_OC3Init(TIM1, &TIM_OCInitStructure);
TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);
/* TIM1 counter enable */
TIM_Cmd(TIM1, ENABLE);
/* TIM1 Main Output Enable */
TIM_CtrlPWMOutputs(TIM1, ENABLE);
}
void PWM_Demo::Config()
{
GPIO_InitTypeDef GPIO_InitStructure;
/* GPIOA Clocks enable */
RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA, ENABLE);
/* GPIOA Configuration: Channel 1, 2, 3 and 4 as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource8, GPIO_AF_2);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_2);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_2);
}
and here my F3 code: (no output in Pin whatsoever)
void Pin::Initialize(GPIOMode_TypeDef mode)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHBPeriphClockCmd(this->Periphery, ENABLE);
GPIO_InitStructure.GPIO_Pin = this->Number;
if(mode != GPIO_Mode_AN)
{
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
}
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Mode = mode;
GPIO_Init(this->GPIOx, &GPIO_InitStructure);
GPIO_ResetBits(this->GPIOx, this->Number); // nötig?
switch(mode)
{
case GPIO_Mode_AN:
InitializeADC();
break;
case GPIO_Mode_AF:
GPIO_PinAFConfig(GPIOA, GPIO_PinSource8, GPIO_AF_12);
InitializePWM();
break;
}
}
void Pin::InitializePWM()
{
TIM_TimeBaseInitTypeDef TIM_TimeBase_InitStructure;
TIM_OCInitTypeDef TIM_OC_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBase_InitStructure.TIM_Period = 20000 - 1; // 20000
TIM_TimeBase_InitStructure.TIM_Prescaler = 72 - 1; // 72
TIM_TimeBase_InitStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM1, &TIM_TimeBase_InitStructure);
TIM_OC_InitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OC_InitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OC_InitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OC_InitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC_InitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
TIM_OC_InitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OC_InitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
TIM_OC_InitStructure.TIM_Pulse = BaseValue + CCR2_Val; //min = 500, max = 2500, BASE = 600
TIM_OC1Init(TIM1, &TIM_OC_InitStructure);
TIM_OC1PreloadConfig (TIM1, TIM_OCPreload_Disable);
NVIC_InitStructure.NVIC_IRQChannel = TIM1_CC_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
TIM_Cmd(TIM1, ENABLE);
TIM_CtrlPWMOutputs(TIM1, ENABLE);
TIM_ITConfig(TIM1, TIM_IT_CC1, ENABLE);
}
void TIM1_CC_IRQHandler(void)
{
if (TIM_GetITStatus(TIM1, TIM_IT_CC1) != RESET)
{
TIM_ClearITPendingBit(TIM1, TIM_IT_CC1);
STM_EVAL_LEDToggle(LED4);
CaptureValue = TIM_GetCapture1(TIM1);
TIM_SetCompare1(TIM1, BaseValue + CCR2_Val);
}
}
I'm not a motor guy, you'll need to express your request as a specific signal output. The[DEAD LINK /public/STe2ecommunities/mcu/Lists/STM32Discovery/Flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/STM32Discovery/TIM4%20CH3%2c%20CH2%2c%20CH1%20now%20working&FolderCTID=0x01200200770978C69A1141439FE559EB459D75800084C20D8867EAD444A5987D47BE638E0F&TopicsView=https://my.st.com/public/STe2ecommunities/mcu/Lists/STM32Discovery/AllItems.aspx¤tviews=63] post immediately below this relates to driving servos on an STM32F3-Discovery
