10 PWM TIM1-8都调通了就TIM9不行仿真TIM9外设寄存器没有变化

发布于 2021-04-21 17:45:21 浏览：1294 订阅该版

TIM1到TIM8 PWM都调通了 仿真TIM寄存器是会变化的
TIM9仿真不行 如图
用keil TIM9也调通了 就是上RTT不行
最主要问题是仿真寄存器竟然不变化 给点想法
![0e84deb0afacbbfc33fc10336c7f258a.png](https://oss-club.rt-thread.org/uploads/20210421/0e84deb0afacbbfc33fc10336c7f258a.png)
```c
static rt_err_t stm32_hw_pwm_init(struct stm32_pwm *device)
{
    rt_err_t result = RT_EOK;
    TIM_HandleTypeDef *tim = RT_NULL;
    TIM_OC_InitTypeDef oc_config = {0};
    TIM_MasterConfigTypeDef master_config = {0};
    TIM_ClockConfigTypeDef clock_config = {0};

RT_ASSERT(device != RT_NULL);

tim = (TIM_HandleTypeDef *)&device->tim_handle;

/* configure the timer to pwm mode */
    tim->Init.Prescaler = 167;
    tim->Init.CounterMode = TIM_COUNTERMODE_UP;
    tim->Init.Period = 100;
    tim->Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
#if defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32L4)
    tim->Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
#endif

if (HAL_TIM_Base_Init(tim) != HAL_OK)
    {
        LOG_E("%s pwm init failed", device->name);
        result = -RT_ERROR;
        goto __exit;
    }
    if (HAL_TIM_PWM_Init(tim) != HAL_OK)
    {
        LOG_E("%s pwm init failed", device->name);
        result = -RT_ERROR;
        goto __exit;
    }

clock_config.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
    if (HAL_TIM_ConfigClockSource(tim, &clock_config) != HAL_OK)
    {
        LOG_E("%s clock init failed", device->name);
        result = -RT_ERROR;
        goto __exit;
    }

master_config.MasterOutputTrigger = TIM_TRGO_RESET;
    master_config.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
    if (HAL_TIMEx_MasterConfigSynchronization(tim, &master_config) != HAL_OK)
    {
        LOG_E("%s master config failed", device->name);
        result = -RT_ERROR;
        goto __exit;
    }

oc_config.OCMode = TIM_OCMODE_PWM1;
    oc_config.Pulse = 50;
    oc_config.OCPolarity = TIM_OCPOLARITY_HIGH;
    oc_config.OCFastMode = TIM_OCFAST_DISABLE;
    oc_config.OCNIdleState = TIM_OCNIDLESTATE_RESET;
    oc_config.OCIdleState  = TIM_OCIDLESTATE_RESET;

/* pwm pin configuration */
    HAL_TIM_MspPostInit(tim);

/* config pwm channel */
    if (device->channel & 0x01)
    {
        if (HAL_TIM_PWM_ConfigChannel(tim, &oc_config, TIM_CHANNEL_1) != HAL_OK)
        {
            LOG_E("%s channel1 config failed", device->name);
            result = -RT_ERROR;
            goto __exit;
        }
    }

if (device->channel & 0x02)
    {
        if (HAL_TIM_PWM_ConfigChannel(tim, &oc_config, TIM_CHANNEL_2) != HAL_OK)
        {
            LOG_E("%s channel2 config failed", device->name);
            result = -RT_ERROR;
            goto __exit;
        }
    }

if (device->channel & 0x04)
    {
        if (HAL_TIM_PWM_ConfigChannel(tim, &oc_config, TIM_CHANNEL_3) != HAL_OK)
        {
            LOG_E("%s channel3 config failed", device->name);
            result = -RT_ERROR;
            goto __exit;
        }
    }

if (device->channel & 0x08)
    {
        if (HAL_TIM_PWM_ConfigChannel(tim, &oc_config, TIM_CHANNEL_4) != HAL_OK)
        {
            LOG_E("%s channel4 config failed", device->name);
            result = -RT_ERROR;
            goto __exit;
        }
    }

/* enable update request source */
    __HAL_TIM_URS_ENABLE(tim);

HAL_TIM_PWM_Start(tim, TIM_CHANNEL_1);
    /* Update frequency value */
    HAL_TIM_GenerateEvent(tim, TIM_EVENTSOURCE_UPDATE);
__exit:
    return result;
}
```