STM32F373Rxx ADC1 triggered by Timer4 CC? probable HAL library error

[Leonardo Volponi]

Posted on March 23, 2017 at 19:38

The problem is a complier error because in the cube MX (version 4.20.0)

for the STM32F373R8Tx

using ADC1 (12 bits ADC) I can choose, in the configuration tab,

ADC1 and as external trigger source for regular conversion the TIM4 CC4 event....

this will generate this code:

....

hadc1.Instance = ADC1;

hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;

hadc1.Init.ContinuousConvMode = DISABLE;

hadc1.Init.DiscontinuousConvMode = ENABLE;

hadc1.Init.NbrOfDiscConversion = 8;

hadc1.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T4_CC4; <-- compiling this will generate an undefined error !

hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;

hadc1.Init.NbrOfConversion = 8;

....

in the HAL libary header (version 1.7.0 lates up to date) stm32f3xx_hal_adc_ex.h

at the line 1349 there is: &sharpdefine ADC_EXTERNALTRIGCONV_T4_CC2 ADC_EXTERNALTRIG_T4_CC2

at the line 1827 there is: &sharpdefine ADC_EXTERNALTRIG_T4_CC2 ((uint32_t)(ADC_CR2_EXTSEL_2 | ADC_CR2_EXTSEL_0))

Reading at the manual STM32F37xx Reference Manual (RM0313) in the chapter 12.12.3 ADC control register 2 (ADC_CR2) the documentation report:

......

EXTSEL[2:0] External event selector for regular group:

the value (bits) 101 that is (ADC_CR2_EXTSEL_2 | ADC_CR2_EXTSEL_0)

the manual reports that with this configuration the trigger source should be TIM4 CC4 Event.

.....

is there anybody that can explain this ?

Thank you very much in advance for your help !

Best regards

Leonardo

#stm32f373-adc-trigger

[Imen.D]

Posted on March 29, 2017 at 18:21

Hi

Volponi.Leonardo

,

I want to thank you for your issue report.I will raise it internally and keep you informed with updates.

Imen

[Imen.D]

Posted on April 03, 2017 at 14:42

Hi

Volponi.Leonardo

,

I would inform you that your reported bug is confirmed and will be fixed in the coming version.

Thank you for bringing this to our attention.

Imen