Timer 8 interrupt problem

chenbingjy

Timer 8 interrupt problem [Copy link]

Timer 8 interrupt initialization compilation error, prompting that it is not defined.

Timer 5 is fine. I want to see where Timer 5 is defined, but I can't find it, as shown below:

Could you please tell me how to solve this problem? Thank you!

chenbingjy

There is no timer 8.

This is from the data sheet.

I use PC6 and PC7. If there is no TIM8, I use TIM3. How should I write the mapping? Thank you!

huo_hu

Please refer to stm32fXXX.h, where the name is defined. The reuse of different models is different, so the name is different. Please refer to stm32fXXX.h for details.

OTG_FS_WKUP_IRQn = 42, /*!< USB OTG FS Wakeup through EXTI line interrupt */
TIM8_BRK_TIM12_IRQn = 43, /*!< TIM8 Break Interrupt and TIM12 global interrupt */
TIM8_UP_TIM13_IRQn = 44, /*!< TIM8 Update Interrupt and TIM13 global interrupt */
TIM8_TRG_COM_TIM14_IRQn = 45, /*!< TIM8 Trigger and Commutation Interrupt and TIM14 global interrupt */
TIM8_CC_IRQn = 46, /*!< TIM8 Capture Compare global interrupt */
DMA1_Stream7_IRQn = 47, /*!< DMA1 Stream7 Interrupt

huo_hu

The name of the interrupt service is based on the name in startup_stm32fXXX.s

EXPORT EXTI15_10_IRQHandler [WEAK]
EXPORT RTC_Alarm_IRQHandler [WEAK]
EXPORT OTG_FS_WKUP_IRQHandler [WEAK]
EXPORT TIM8_BRK_TIM12_IRQHandler [WEAK] EXPORT TIM8_TRG_COM_TIM14_IRQHandler [ W
EAK] EXPORT TIM8_CC_IRQHandler [WEAK ] EXPORT DMA1_Stream7_IRQHandler [WEAK] EXPORT FMC_IRQHandler [WEAK] EXPORT SDIO_IRQHandler [WEAK]

huo_hu

chenbingjy posted on 2020-6-22 15:18 There is no timer 8 here. This is in the data sheet. I use PC6, PC7. If there is no TIM8, I use TIM3. How to write the mapping...

There is a special library function for pin remap. I forgot what it is called. It is now widely used in cube.

chenbingjy

huo_hu posted on 2020-6-22 18:25 Please refer to stm32fXXX.h, where the name is defined. The reuse of different models is different, so the name is different. Please refer to stm32fXXX.h...

Thanks!