Question

我似乎无法让TIM8 PWM与我尝试的任何东西一起工作。我已经尝试过所有计时器，除TIM8外，他们都使用我的PWM驱动程序。所有计时器都是使用CubeMx生成的，没有冲突。

以下是代码的一些内容。驱动程序相当大，所以我删除了部分内容：

引脚配置：

//Tim 8 Chan 1 IN1A
GPIO_InitStructure.Pin          = GPIO_PIN_6;
GPIO_InitStructure.Mode         = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull         = GPIO_NOPULL;
GPIO_InitStructure.Speed        = GPIO_SPEED_HIGH;
GPIO_InitStructure.Alternate    = GPIO_AF3_TIM8;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);

//Tim 8 Chan 2 IN1B
GPIO_InitStructure.Pin          = GPIO_PIN_7;
GPIO_InitStructure.Mode         = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull         = GPIO_NOPULL;
GPIO_InitStructure.Speed        = GPIO_SPEED_HIGH;
GPIO_InitStructure.Alternate    = GPIO_AF3_TIM8;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);

//Tim 8 Chan 3 IN2A
GPIO_InitStructure.Pin          = GPIO_PIN_8;
GPIO_InitStructure.Mode         = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull         = GPIO_NOPULL;
GPIO_InitStructure.Speed        = GPIO_SPEED_HIGH;
GPIO_InitStructure.Alternate    = GPIO_AF3_TIM8;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);

//Tim 8 Chan 4 IN2B
GPIO_InitStructure.Pin          = GPIO_PIN_9;
GPIO_InitStructure.Mode         = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull         = GPIO_NOPULL;
GPIO_InitStructure.Speed        = GPIO_SPEED_HIGH;
GPIO_InitStructure.Alternate    = GPIO_AF3_TIM8;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);

定时器设置：

static PWM_ERC_T Timer8_Init(PWM_HANDLE_T *pwmHandle_, uint16_t prescaler_, uint16_t period_, uint16_t pulse_)
{

PWM_ERC_T erc = PWM_ERC_NO_ERROR;

__TIM8_CLK_ENABLE();

pwmHandle_->TimerHandle.Instance = TIM8;

TIM_MasterConfigTypeDef masterConfig;
TIM_BreakDeadTimeConfigTypeDef breakDeadTimeConfig;
TIM_OC_InitTypeDef configOC;

pwmHandle_->TimerHandle.Init.Prescaler          = prescaler_;
pwmHandle_->TimerHandle.Init.CounterMode        = TIM_COUNTERMODE_UP;
pwmHandle_->TimerHandle.Init.Period             = period_;
pwmHandle_->TimerHandle.Init.ClockDivision      = TIM_CLOCKDIVISION_DIV1;
pwmHandle_->TimerHandle.Init.RepetitionCounter  = 0;
HAL_TIM_PWM_Init(&pwmHandle_->TimerHandle);

masterConfig.MasterOutputTrigger    = TIM_TRGO_RESET;
masterConfig.MasterOutputTrigger2   = TIM_TRGO2_RESET;
masterConfig.MasterSlaveMode        = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&pwmHandle_->TimerHandle, &masterConfig);

breakDeadTimeConfig.OffStateRunMode     = TIM_OSSR_DISABLE;
breakDeadTimeConfig.OffStateIDLEMode    = TIM_OSSI_DISABLE;
breakDeadTimeConfig.LockLevel           = TIM_LOCKLEVEL_OFF;
breakDeadTimeConfig.DeadTime            = 0;
breakDeadTimeConfig.BreakState          = TIM_BREAK_DISABLE;
breakDeadTimeConfig.BreakPolarity       = TIM_BREAKPOLARITY_HIGH;
breakDeadTimeConfig.BreakFilter         = 0;
breakDeadTimeConfig.Break2State         = TIM_BREAK2_DISABLE;
breakDeadTimeConfig.Break2Polarity      = TIM_BREAK2POLARITY_HIGH;
breakDeadTimeConfig.Break2Filter        = 0;
breakDeadTimeConfig.AutomaticOutput     = TIM_AUTOMATICOUTPUT_DISABLE;
HAL_TIMEx_ConfigBreakDeadTime(&pwmHandle_->TimerHandle, &breakDeadTimeConfig);

configOC.OCMode         = TIM_OCMODE_PWM1;
configOC.Pulse          = pulse_;
configOC.OCPolarity     = TIM_OCPOLARITY_HIGH;
configOC.OCNPolarity    = TIM_OCNPOLARITY_HIGH;
configOC.OCFastMode     = TIM_OCFAST_DISABLE;
configOC.OCIdleState    = TIM_OCIDLESTATE_RESET;
configOC.OCNIdleState   = TIM_OCNIDLESTATE_RESET;

if(pwmHandle_->Init.Channels & PWM_CHANNEL_1)
{
    HAL_TIM_PWM_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_1);
}

if(pwmHandle_->Init.Channels & PWM_CHANNEL_2)
{
    HAL_TIM_PWM_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_2);
}

if(pwmHandle_->Init.Channels & PWM_CHANNEL_3)
{
    HAL_TIM_PWM_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_3);
}

if(pwmHandle_->Init.Channels & PWM_CHANNEL_4)
{
    HAL_TIM_PWM_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_4);
}

我向您保证每个频道都已启用，并且预先计算器/时段和时段正在正确计算。

有什么想法？这是唯一有问题的计时器。

解决方案：

终于弄清楚出了什么问题。

HAL_TIM_OC_Init(&pwmHandle_->TimerHandle);

由于某些原因，必须为TIM8添加

...不确定原因和

HAL_TIM_OC_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_1);

需要使用

代替

HAL_TIM_PWM_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_1);

更正定时器设置：

static PWM_ERC_T Timer8_Init(PWM_HANDLE_T *pwmHandle_, uint16_t prescaler_, uint16_t period_, uint16_t pulse_)
{

PWM_ERC_T erc = PWM_ERC_NO_ERROR;


TIM_MasterConfigTypeDef masterConfig;
TIM_BreakDeadTimeConfigTypeDef breakDeadTimeConfig;
TIM_OC_InitTypeDef configOC;

pwmHandle_->TimerHandle.Init.Prescaler          = prescaler_;
pwmHandle_->TimerHandle.Init.CounterMode        = TIM_COUNTERMODE_UP;
pwmHandle_->TimerHandle.Init.Period             = period_;
pwmHandle_->TimerHandle.Init.ClockDivision      = TIM_CLOCKDIVISION_DIV1;
pwmHandle_->TimerHandle.Init.RepetitionCounter  = 0;
HAL_TIM_OC_Init(&pwmHandle_->TimerHandle);
HAL_TIM_PWM_Init(&pwmHandle_->TimerHandle);

masterConfig.MasterOutputTrigger    = TIM_TRGO_RESET;
masterConfig.MasterOutputTrigger2   = TIM_TRGO2_RESET;
masterConfig.MasterSlaveMode        = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&pwmHandle_->TimerHandle, &masterConfig);

breakDeadTimeConfig.OffStateRunMode     = TIM_OSSR_DISABLE;
breakDeadTimeConfig.OffStateIDLEMode    = TIM_OSSI_DISABLE;
breakDeadTimeConfig.LockLevel           = TIM_LOCKLEVEL_OFF;
breakDeadTimeConfig.DeadTime            = 0;
breakDeadTimeConfig.BreakState          = TIM_BREAK_DISABLE;
breakDeadTimeConfig.BreakPolarity       = TIM_BREAKPOLARITY_HIGH;
breakDeadTimeConfig.BreakFilter         = 0;
breakDeadTimeConfig.Break2State         = TIM_BREAK2_DISABLE;
breakDeadTimeConfig.Break2Polarity      = TIM_BREAK2POLARITY_HIGH;
breakDeadTimeConfig.Break2Filter        = 0;
breakDeadTimeConfig.AutomaticOutput     = TIM_AUTOMATICOUTPUT_DISABLE;
HAL_TIMEx_ConfigBreakDeadTime(&pwmHandle_->TimerHandle, &breakDeadTimeConfig);

configOC.OCMode         = TIM_OCMODE_PWM1;
configOC.Pulse          = pulse_;
configOC.OCPolarity     = TIM_OCPOLARITY_HIGH;
configOC.OCNPolarity    = TIM_OCNPOLARITY_HIGH;
configOC.OCFastMode     = TIM_OCFAST_DISABLE;
configOC.OCIdleState    = TIM_OCIDLESTATE_RESET;
configOC.OCNIdleState   = TIM_OCNIDLESTATE_RESET;

if(pwmHandle_->Init.Channels & PWM_CHANNEL_1)
{
    HAL_TIM_OC_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_1);
}

if(pwmHandle_->Init.Channels & PWM_CHANNEL_2)
{
    HAL_TIM_OC_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_2);
}

if(pwmHandle_->Init.Channels & PWM_CHANNEL_3)
{
    HAL_TIM_OC_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_3);
}

if(pwmHandle_->Init.Channels & PWM_CHANNEL_4)
{
    HAL_TIM_OC_ConfigChannel(&pwmHandle_->TimerHandle, &configOC, TIM_CHANNEL_4);
}

return erc;

}

STM32F746ZG TIM8 PWM不工作

0 个答案: