Setting interrupt ADC conversion is complete using HAL

[borisbritwa13]

Posted on August 05, 2015 at 11:37

STM32F407VG

When Interrupt function looks like this:

void ADC_IRQHandler(void)

{

adc=HAL_ADC_GetValue(&hadc1);

 HAL_ADC_IRQHandler(&hadc1);

  HAL_ADC_Start_IT(&hadc1);

}

Everything works well.

But when I want to do the ADC conversion one by one.(  hadc1.Init.ContinuousConvMode = ENABLE;)

void ADC_IRQHandler(void)

{

adc=HAL_ADC_GetValue(&hadc1);

 HAL_ADC_IRQHandler(&hadc1);

 // HAL_ADC_Start_IT(&hadc1);

}

 OVR bit in the SR register is set and ADC is not working.

As the end of conversion, we get to ADC_IRQHandler, collect our data .All right. Bit OVR shall not be installed so as we all do in time.

I have to constantly reset the OVR bit or make the setting(hadc1.Init.EOCSelection = EOC_SEQ_CONV;) and then the OVR bit

will not be installed.

ADC conversion

again

works well.

Why OVR bit is set?

#discovery #adc #stm32f4

[borisbritwa13]

Posted on August 09, 2015 at 18:51

https://youtu.be/BXk-IkVoBXQ

�?t the end of

the

video conversion

 

one by one with

interrupt

Thanks to all

for the help

!!!!

[keaven]

Posted on August 10, 2015 at 17:38

''HAL_ADC_ConvCpltCallback could be implemented in the user file''  

how to use it in main()

?

Simply add it to your source file and add your code to it.  Those functions are  ''weak'' type they are like a virtual type function.  All callbacks of HAL library works that way.

[RomainR.]

Posted on August 11, 2015 at 10:34

britwa.boris

.

Could you provide

your

ADC

Setup function

?

As explained

Keaven

,

HAL_ADC_ConvCpltCallback

function must be

implemented in

your main program

after the

main ()

your

ADC

interrupt

function should

look exactly like

:

ADC_IRQHandler

void

(void)

{

  

HAL_ADC_IRQHandler

(

&

AdcHandle

)

;

}

I suggest you

take a

look

at the

example

program in the

repository

CubeMx

C: \

Users \

username \

STM32Cube

\

Repository

\

STM32Cube_FW_F4_V1.7.0

\ Projects

\

STM32446E_EVAL

\ Examples

\

ADC

Good luck

[borisbritwa13]

Posted on August 11, 2015 at 18:42

rrom

catch

/* ADC1 init function */ void MX_ADC1_Init(void) {   ADC_ChannelConfTypeDef sConfig;     /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)     */   hadc1.Instance = ADC1;   hadc1.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;   hadc1.Init.Resolution = ADC_RESOLUTION12b;   hadc1.Init.ScanConvMode = DISABLE;   hadc1.Init.ContinuousConvMode =ENABLE;   hadc1.Init.DiscontinuousConvMode = DISABLE;   hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;   hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;   hadc1.Init.NbrOfConversion = 1;   hadc1.Init.DMAContinuousRequests = DISABLE;   hadc1.Init.EOCSelection = EOC_SINGLE_CONV;   HAL_ADC_Init(&hadc1);     /**Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.     */   sConfig.Channel = ADC_CHANNEL_1;   sConfig.Rank = 1;   sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;   HAL_ADC_ConfigChannel(&hadc1, &sConfig); }

''HAL_ADC_ConvCpltCallback could be implemented in the user file''-

well

understood.

[RomainR.]

Posted on August 12, 2015 at 08:45

I suggest you

to

follow the

recommendations

of Clive1

.

A

 

very aggressive

timming

perspective

thus

he goes into

o

verrun

e

rror.

What

conversion

rate

do you need?

Maybe

you should

trigger your

ADC

conversion with

a timer

and capture

the result in your

HAL_ADC_ConvCpltCallback

()

Or

use DMA

[borisbritwa13]

Posted on August 12, 2015 at 19:39

I

wrote above

that everything works

topic is closed!!!!

https://youtu.be/BXk-IkVoBXQ

�?t the end of

the

video conversion

 

one by one with

interrupt