STM32F0x2 RM file DAC trigger source makes confused

[Microstar]

Can TIM7 set as trigger source？​

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[Microstar]

DAC block diagram doesn't list TIM7.​

[waclawek.jan · Accepted solution]

I would say, yes, you can, in models which have TIM7.

The smaller models' don't have TIM7 -  TIM7 is available only on STM32F07x and STM32F09x devices. The 'F051 was the first 'F0x IIRC, and the figure might have originated there.

JW

[Tesla DeLorean]

And how hard is it to actually try and test?

I'd also expect the library code to expose the list it can manage.

/** @defgroup DAC_trigger_selection DAC trigger selection
  * @{
  */
#if defined(STM32F051x8) || defined(STM32F058xx)
 
#define DAC_TRIGGER_NONE                   (0x00000000U) /*!< Conversion is automatic once the DAC1_DHRxxxx register
                                                                       has been loaded, and not by external trigger */
#define DAC_TRIGGER_T2_TRGO                ((uint32_t)(DAC_CR_TSEL1_2 | DAC_CR_TEN1)) /*!< TIM2 TRGO selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_T3_TRGO                ((uint32_t)(DAC_CR_TSEL1_0 | DAC_CR_TEN1)) /*!< TIM3 TRGO selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_T6_TRGO                ((uint32_t)DAC_CR_TEN1) /*!< TIM6 TRGO selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_T15_TRGO                ((uint32_t)(DAC_CR_TSEL1_1 | DAC_CR_TSEL1_0 | DAC_CR_TEN1)) /*!< TIM15 TRGO selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_EXT_IT9                ((uint32_t)(DAC_CR_TSEL1_2 | DAC_CR_TSEL1_1 | DAC_CR_TEN1)) /*!< EXTI Line9 event selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_SOFTWARE               ((uint32_t)(DAC_CR_TSEL1 | DAC_CR_TEN1)) /*!< Conversion started by software trigger for DAC channel */
 
#endif /* STM32F051x8 || STM32F058xx */
 
#if defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || \
    defined(STM32F091xC) || defined(STM32F098xx)
 
#define DAC_TRIGGER_NONE                   (0x00000000U) /*!< Conversion is automatic once the DAC1_DHRxxxx register
                                                                       has been loaded, and not by external trigger */
#define DAC_TRIGGER_T2_TRGO                ((uint32_t)(DAC_CR_TSEL1_2 | DAC_CR_TEN1)) /*!< TIM2 TRGO selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_T3_TRGO                ((uint32_t)(DAC_CR_TSEL1_0 | DAC_CR_TEN1)) /*!< TIM3 TRGO selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_T6_TRGO                ((uint32_t)DAC_CR_TEN1) /*!< TIM6 TRGO selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_T7_TRGO                ((uint32_t)(DAC_CR_TSEL1_1 | DAC_CR_TEN1)) /*!< TIM7 TRGO selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_T15_TRGO                ((uint32_t)(DAC_CR_TSEL1_1 | DAC_CR_TSEL1_0 | DAC_CR_TEN1)) /*!< TIM15 TRGO selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_EXT_IT9                ((uint32_t)(DAC_CR_TSEL1_2 | DAC_CR_TSEL1_1 | DAC_CR_TEN1)) /*!< EXTI Line9 event selected as external conversion trigger for DAC channel */
#define DAC_TRIGGER_SOFTWARE               ((uint32_t)(DAC_CR_TSEL1 | DAC_CR_TEN1)) /*!< Conversion started by software trigger for DAC channel */
 
#endif /* STM32F071xB || STM32F072xB || STM32F078xx || */
       /* STM32F091xC || STM32F098xx */

@Imen DAHMEN​  @Khouloud GARSI​ Inconsistent block diagram, from F051/F058 parts

[Imen.D]

Hello All,

In fact you are correct, the whole TIM7 is not present in the other series (not only the connection).

I raised this internally to the appropriate team for improvement.

Thank you for your help.

Kind Regards,

Imen

[Microstar]

Yes, library has shown the list.

Maybe I should help making the docs correct.