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dhaselwood
dhaselwood
Associate III
July 22, 2013
Question

IRQ number of TIM11 on STM32F103FxF,G

  • July 22, 2013
  • 5 replies
  • 1017 views
Posted on July 22, 2013 at 04:34

The datasheet for 'F103F,G parts show additional timers, e.g. TIM11, not present on the earlier parts, e.g. 'F103RB.  Where is documentation that specifies the IRQ number for these timers?

The datasheet says the NVIC has 60 interrupt channels, yet the datasheet for STM32F103xC, STM32F103xD and STM32F103xE that does not have these timers also shows 60 interrupt channels, which suggests these timers must share interrupt vectors with something else.
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    5 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    July 22, 2013
    Posted on July 22, 2013 at 14:31

    STMicro\STM32F10x_StdPeriph_Lib_V3.4.0\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\startup\arm\startup_stm32f10x_xl.s

                    DCD     TIM1_BRK_TIM9_IRQHandler      ; TIM1 Break and TIM9

                    DCD     TIM1_UP_TIM10_IRQHandler      ; TIM1 Update and TIM10

                    DCD     TIM1_TRG_COM_TIM11_IRQHandler ; TIM1 Trigger and Commutation and TIM11

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    Amel NASRI
    Amel NASRI
    ST Technical Moderator
    July 22, 2013
    Posted on July 22, 2013 at 14:53

    Also, in STM32F10x_StdPeriph_Lib_V3.5.0\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\stm32f10x.h 

    TIM1_TRG_COM_TIM11_IRQn = 26, 
/*!< TIM1 Trigger and Commutation Interrupt and TIM11 global interrupt */

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    dhaselwood
    dhaselwoodAuthor
    Associate III
    July 22, 2013
    Posted on July 22, 2013 at 22:49

    Tesla DeLorean
    Tesla DeLorean
    Guru
    July 22, 2013
    Posted on July 22, 2013 at 23:31

    I would rather ST put the IRQ numbers in the datasheet for the part.  Looking at code files for documentation seems backwards.

    It is in the reference manual, the code was a quick place to look.

    Page 193, Table 62

    http://www.st.com/web/en/resource/technical/document/reference_manual/CD00171190.pdf

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    dhaselwood
    dhaselwoodAuthor
    Associate III
    July 23, 2013
    Posted on July 23, 2013 at 03:22

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