cubeMx, DMA and Adc

[spa23]

Posted on April 13, 2015 at 14:17

HI

I just have a simple question; I think I�m missing something.

I using cubeMX for getting the ADC up running with 2 ch ( IN8 and IN15)

And the DMA for transferring the data to a buffer.

I have added a picture showing the cubeMX ADC setup

And I Use the:

if( HAL_ADC_Start_DMA( mpHadc, (uint32_t *)rawAnalogData, 4 ) == HAL_OK )

For starting the ADC.

And I have implemented the:

void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)

{

                             analogConvDone = true;

                             HAL_ADC_Stop_DMA(mpHadc);

}

The problem is that I only get data from ch8 (rank 1) and NOT from ch15Hops someone can give a hint. #adc-dma-cubemx

[spa23]

Posted on April 14, 2015 at 08:39

HI 

It seems to be a error in the ADC software for cubeMx. continuous mode does not work.When you set continuous mode to enable (in cubeMX) it only just convert the first rank.example:/* ADC1 init function */void MX_ADC1_Init(void){  ADC_ChannelConfTypeDef sConfig;    /**Common config     */  hadc1.Instance = ADC1;  hadc1.Init.ScanConvMode = ENABLE;  hadc1.Init.ContinuousConvMode = ENABLE;  hadc1.Init.DiscontinuousConvMode = DISABLE;  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;  hadc1.Init.NbrOfConversion = 4;  HAL_ADC_Init(&hadc1);    /**Configure Regular Channel     */  sConfig.Channel = ADC_CHANNEL_8;  sConfig.Rank = 1;  sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;  HAL_ADC_ConfigChannel(&hadc1, &sConfig);    /**Configure Regular Channel     */  sConfig.Channel = ADC_CHANNEL_15;  sConfig.Rank = 2;  HAL_ADC_ConfigChannel(&hadc1, &sConfig);    /**Configure Regular Channel     */  sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;  sConfig.Rank = 3;  HAL_ADC_ConfigChannel(&hadc1, &sConfig);    /**Configure Regular Channel     */  sConfig.Channel = ADC_CHANNEL_VREFINT;  sConfig.Rank = 4;  HAL_ADC_ConfigChannel(&hadc1, &sConfig);}And in HAL_ADC_Init()    if (hadc->Init.ScanConvMode == ADC_SCAN_ENABLE)    {      tmp_sqr1 = ADC_SQR1_L_SHIFT(hadc->Init.NbrOfConversion);    }Problem in Init.ScanConvMode:  ADC_SCAN_ENABLE and ENABLE is not the same value!!Best regardsSøren Panduro

I have tried to post a ticket in the online support, but it keeps telling me: The submit action was successfully cancelled. -> super

L

[Amel NASRI]

Posted on April 22, 2015 at 10:35

Hipanduro.soeren.002,

This issue has been reported in following threads: -

https://my.st.com/public/STe2ecommunities/mcu/Lists/STM32Java/Flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/STM32Java/STMCubeMX%20Incorrect%20ADC%20generation%20for%20STM32103CBT6

-

https://my.st.com/public/STe2ecommunities/mcu/Lists/STM32Java/Flat.aspx?RootFolder=https://my.st.com/public/STe2ecommunities/mcu/Lists/STM32Java/Bug%20report%20Stm32cubeMX%20ADC%20initialization%20code%28%20Cube%20v4.6.0stm32f1xx_hal_adc.c%28v1.0.0%29

It should be already fixed in current CubeMX release (4.7). So, could you please let me know if you are using this one or a previous version? If 4.7 is used, please tell me what product are you using. Thanks -Mayla-

[nick239955_stm1_stmicro]

Posted on November 24, 2016 at 01:41

This still occurs on the STM32F746VGTx and the latest FW-F7 (V1.5.0 and V1.5.1) do not generate valid Atollic TrueStudio projects.

Nick