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只看该作者 · 2011-9-15 10:48

在使用STM32F103芯片，配置Timer模块和相应中断时出现HardFault。代码如下：
void board_init(void)
{
stm32f10x_cfg_sysclk();
stm32f10x_cfg_gpio();
stm32f10x_cfg_usart();
stm32f10x_cfg_adc1();
stm32f10x_cfg_spi();
stm32f10x_cfg_exti(); //在此函数中有配置相应Timer的中断允许位
stm32f10x_cfg_tim(); //此函数完成Timer的一些必要的设置
stm32f10x_cfg_fsmc();

#if SYS_WDT_ENABLE
stm32f10x_cfg_iwdg();
#endif
#if SYS_USB_ENABLE
stm32f10x_cfg_usb();
#endif
}

问题：如果在stm32f10x_cfg_exit()中设置全局中断允许位后，另在stm32f10x_cfg_tim()中调用TIM_ITConfig()设置模块中断允许，程序在这时产生HardFault

只看该作者 · 2011-9-15 10:54

唉，没人回答。

只看该作者 · 2011-9-15 12:59

神马

1万 · 2011-9-15 14:14

估计没有中断处理程序。

只看该作者 · 2011-9-15 14:32

还没有进入中断，开始以为是固件库的问题，但使用比较早的固件库任然会有同样的问题。
在设置相关Timer的DIER寄存器后，再设置NVIC中的ISER寄存器就会出现这个问题，如果不开启ISER或DIER中的任一个程序不会有HardFault.

只看该作者 · 2011-9-15 14:43

贴出完整的代码：
void stm32f10x_cfg_tim(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
#if SYS_USE_BEEP
TIM_OCInitTypeDef TIM_OCInitStruct;
#endif

TIM_TimeBaseInitStructure.TIM_Period = 125;
TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStructure.TIM_Prescaler= (36 - 1);
TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Down;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位

TIM_ClearFlag(TIM2, TIM_FLAG_Update);
            TIM_ITConfig(TIM2,TIM_FLAG_Updata,ENABLE); TIM_Cmd(TIM2,ENABLE);

#if SYS_USE_BEEP
TIM_TimeBaseInitStructure.TIM_Period = 13035; //abour output 2.778KHz
    TIM_TimeBaseInitStructure.TIM_Prescaler = 0;    // TIMCLK/2
    TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStructure);

TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStruct.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStruct.TIM_Pulse = 6518; //TIM_OCInitStruct.TIM_Plus = TIM_TimeBaseInitStruct.TIM_Period/2
TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OCInitStruct.TIM_OCNPolarity = TIM_OCNPolarity_Low;
TIM_OCInitStruct.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStruct.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
TIM_OC1Init(TIM3,&TIM_OCInitStruct);

TIM_ARRPreloadConfig(TIM3, ENABLE);
    TIM_Cmd(TIM3, ENABLE);
#endif
}

void stm32f10x_cfg_nvic(void)
{
NVIC_InitTypeDef NVIC_InitStructure;

   /* Enable extern interrupt line */
NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQn; //网络数据接收中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

board_dbg("\r\n Setting EXTI4_IRQn trig!");

NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;  //网口休眠中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

board_dbg("\r\n Setting EXTI9_5_IRQn!");

NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn; //红外开盖信号中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

board_dbg("\r\n Setting EXTI15_10_IRQn!");

NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn; //shutdown INT
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

board_dbg("\r\n Setting EXTI2_IRQn!");

NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; //采样周期中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

board_dbg("\r\n Setting TIM2_IRQn!");

#if SYS_USB_ENABLE
NVIC_InitStructure.NVIC_IRQChannel = USB_HP_CAN1_TX_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
#endif

NVIC_SetVectorTable(0x08000000, 0x00);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); /* Configure the Priority Group to 2 bits */
}

只看该作者 · 2011-9-15 16:31

在进行Timer的NVIC设置时当向ISER写入位值将LR寄存器的地址修改为0xfffffff1，从而引起Hardfault。

只看该作者 · 2011-9-16 21:52

不管是使用哪个定时器，只要一设置IDER寄存器或ISER寄存器中的相关位就会引起HardFault，如果在设置定时器时不设置IDER或ISER中任一个则不会出现Hardfault。但实现不了采样周期中断，请香主帮忙看下。

只看该作者 · 2011-9-16 21:52

请教香主

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