STM32F429IGT6的TIM6作为systick问题
各位大佬们，你们好，我在CubeMx和在CSDN中复制将TIM6作为systick时钟，但是在系统就一直卡住了，不会往下运行其他的，如图所示，请各位大佬帮我看看这个是什么问题。代码如下：
HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
{
RCC_ClkInitTypeDef clkconfig;
uint32_t uwTimclock = 0;
uint32_t uwPrescalerValue = 0;
uint32_t pFLatency;
/*Configure the TIM6 IRQ priority */
HAL_NVIC_SetPriority(TIM6_DAC_IRQn, TickPriority ,0);
/* Enable the TIM6 global Interrupt */
HAL_NVIC_EnableIRQ(TIM6_DAC_IRQn);
/* Enable TIM6 clock */
__HAL_RCC_TIM6_CLK_ENABLE();
/* Get clock configuration */
HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
/* Compute TIM6 clock */
uwTimclock = 2*HAL_RCC_GetPCLK1Freq();
/* Compute the prescaler value to have TIM6 counter clock equal to 1MHz */
uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000) - 1);
/* Initialize TIM6 */
htim6.Instance = TIM6;
/* Initialize TIMx peripheral as follow:
+ Period = [(TIM6CLK/1000) - 1]. to have a (1/1000) s time base.
+ Prescaler = (uwTimclock/1000000 - 1) to have a 1MHz counter clock.
+ ClockDivision = 0
+ Counter direction = Up
*/
htim6.Init.Period = (1000000 / 1000) - 1;
htim6.Init.Prescaler = uwPrescalerValue;
htim6.Init.ClockDivision = 0;
htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
if(HAL_TIM_Base_Init(&htim6) == HAL_OK)
{
/* Start the TIM time Base generation in interrupt mode */
return HAL_TIM_Base_Start_IT(&htim6); //仿真时程序卡在了这一句，无法出来。
}
/* Return function status */
return HAL_ERROR;
}
分享个我的，这个是i正常的。
TIM_HandleTypeDef TimHandle = {0};
/*
*********************************************************************************************************
* 函 数 名: System_Init
* 功能说明: 为HAL库配置1ms的时间基准，此函数会被HAL_Init和HAL_RCC_ClockConfig调用
* 形 参：TickPriority定时器优先级
* 返 回 值: 无
*********************************************************************************************************
*/
HAL_StatusTypeDef HAL_InitTick (uint32_t TickPriority)
{
RCC_ClkInitTypeDef clkconfig;
uint32_t uwTimclock, uwAPB1Prescaler = 0U;
uint32_t uwPrescalerValue = 0U;
uint32_t pFLatency;
/* 复位定时器7 */
TimHandle.Instance = TIM7;
if(HAL_TIM_Base_DeInit(&TimHandle) != HAL_OK)
{
Error_Handler(__FILE__, __LINE__);
}
/* 设置TIM7的中断优先级并使能 */
HAL_NVIC_SetPriority(TIM7_IRQn, TickPriority ,0U);
HAL_NVIC_EnableIRQ(TIM7_IRQn);
/* 使能TIM7时钟 */
__HAL_RCC_TIM7_CLK_ENABLE();
/*-----------------------------------------------------------------------
System Clock source = PLL (HSE)
SYSCLK(Hz) = 400000000 (CPU Clock)
HCLK(Hz) = 200000000 (AXI and AHBs Clock)
AHB Prescaler = 2
D1 APB3 Prescaler = 2 (APB3 Clock100MHz)
D2 APB1 Prescaler = 2 (APB1 Clock100MHz)
D2 APB2 Prescaler = 2 (APB2 Clock100MHz)
D3 APB4 Prescaler = 2 (APB4 Clock100MHz)
因为APB1 prescaler != 1, 所以 APB1上的TIMxCLK = APB1 x 2 = 200MHz;
因为APB2 prescaler != 1, 所以 APB2上的TIMxCLK = APB2 x 2 = 200MHz;
APB4上面的TIMxCLK没有分频，所以就是100MHz;
APB1 定时器有 TIM2, TIM3 ,TIM4, TIM5, TIM6, TIM7, TIM12, TIM13, TIM14，LPTIM1
APB2 定时器有 TIM1, TIM8 , TIM15, TIM16，TIM17
APB4 定时器有 LPTIM2，LPTIM3，LPTIM4，LPTIM5
----------------------------------------------------------------------- */
/* 获取时钟配置 */
HAL_RCC_GetClockConfig(&clkconfig, &pFLatency);
/* 获取APB1时钟 */
uwAPB1Prescaler = clkconfig.APB1CLKDivider;
/* 获得TIM7时钟 */
if (uwAPB1Prescaler == RCC_HCLK_DIV1)
{
uwTimclock = HAL_RCC_GetPCLK1Freq();
}
else
{
uwTimclock = 2*HAL_RCC_GetPCLK1Freq();
}
/* TIM7分频到1MHz */
uwPrescalerValue = (uint32_t) ((uwTimclock / 1000000U) - 1U);
/* TIM7CLK = uwTimclock / (Period + 1) / (Prescaler + 1) = 1KHz */
TimHandle.Init.Period = (1000000U / 1000U) - 1U;
TimHandle.Init.Prescaler = uwPrescalerValue;
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
if(HAL_TIM_Base_Init(&TimHandle) == HAL_OK)
{
/* 启动TIM7 */
return HAL_TIM_Base_Start_IT(&TimHandle);
}
/* 返回错误 */
return HAL_ERROR;
}
/*
*********************************************************************************************************
* 函 数 名: HAL_SuspendTick
* 功能说明: 关闭TIM7
* 形 参: 无
* 返 回 值: 无
*********************************************************************************************************
*/
void HAL_SuspendTick(void)
{
__HAL_TIM_DISABLE_IT(&TimHandle, TIM_IT_UPDATE);
}
/*
*********************************************************************************************************
* 函 数 名: HAL_ResumeTick
* 功能说明: 使能TIM7
* 形 参: 无
* 返 回 值: 无
*********************************************************************************************************
*/
void HAL_ResumeTick(void)
{
__HAL_TIM_ENABLE_IT(&TimHandle, TIM_IT_UPDATE);
}
/*
*********************************************************************************************************
* 函 数 名: TIM7_IRQHandler
* 功能说明: TIM7定时器中断服务程序
* 形 参: 无
* 返 回 值: 无
*********************************************************************************************************
*/
void TIM7_IRQHandler(void)
{
if((TIM7->SR & TIM_FLAG_UPDATE) != RESET)
{
TIM7->SR = ~ TIM_FLAG_UPDATE;
HAL_IncTick();
}
}
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