How to use ADC sensor with Ping Pong Application

[AHakk.1]

Hello everyone, I am trying to read adc value from microphone. I am using FFT to get 100 Hz to 2 kHz or more to detect tone. In my project, I can use dma for get adc value and then I use DSP CMSIS. I can do this with my new workspace (with out anything only ADC-DMA) but when I try to implement this on Ping Pong Application I am struggling. I am beginner of stm32 and I can't find any video or blog about adding ADC sensor on stm32wl. 

As I say, I did all of things but I can't add ADC pooling or ADC DMA method on Ping Pong Application. I try to add adc_if.c, adc_if.h, sys_app.c,sys_app.h but I couldn't manage it.

I found adc.c and I configure it for Pool method, I only made continous cov mode enable.

hadc.Init.ContinuousConvMode = ENABLE;

and other files (adc.c etc.) I try to add these (I am using IN0 of ADC. So it is ADC_CHANNEL_0:

static uint32_t ADC_ReadMicData(uint32_t channel)
{
 uint32_t ADCxConvertedValues = 0;
 ADC_ChannelConfTypeDef sConfig = {0};
 MX_ADC_Init();
 /* Configure Regular Channel */
 sConfig.Channel = ADC_CHANNEL_0;
 sConfig.Rank = ADC_REGULAR_RANK_1;
 sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_1;
 if (HAL_ADC_Start(&hadc) != HAL_OK)
 {
  /* Start Error */
  Error_Handler();
 }
 /** Wait for end of conversion */
 HAL_ADC_PollForConversion(&hadc, HAL_MAX_DELAY);
 /** Wait for end of conversion */
 ADCxConvertedValues = HAL_ADC_GetValue(&hadc);
 return ADCxConvertedValues;
 /* USER CODE BEGIN ADC_ReadChannels_2 */
 /* USER CODE END ADC_ReadChannels_2 */
 
}

I add my I2C sensor on my own but I couldn't find ADC for my Microphone.

Can you share me the way of adding any ADC sensor for Ping Pong Application ? or at least if there is any video or something, can you share with me please?

[IIRHO.1 · Accepted solution]

Hello @AHakk.1​ and welcome to ST Community

I advice you to take a look at the demonstration LocalNetwork_Sensor that you can find in the STM32Cube_FW_WL_V1.3.0 . This demonstration is based on the Ping Pong application , It implements Sensor data sending (based on the Internal Temperature Sensor and VBat information ) to the demo concentrator ( you can also find it in the same firmware version) . both Temperature sensor and Vbat are using ADC protocol in communication .

Hope this is helpful .

If this is what you need , I suggest you to mention this answer as best answer so that the information will be defused.

Issam

[AHakk.1]

Hello thanks for the reply. I already try these but I couldn't manage it. I look at it and I try to add ADC_ReadMicData function as in example.

adc_if.c and adc_if.h and sys.c and sys.h. I couldn't manage it.

I add in adc_if.c

uint32_t SYS_GetMicData(void)
{
  uint32_t measuredData = 0;
  measuredData= ADC_ReadChannels(ADC_CHANNEL_0);
  return measuredData ;
}

I add in adc_if.h

 uint32_t SYS_GetMicData(void);
 

but when I call SYS_GetMicData() in subghz_phy_app.c nothing return

so I add sys_app.c

uint16_t GetMicData(void)
{
  uint16_t measuredData = 0;
  measuredData= GetMicData();
  return measuredData ;
}

and I add sys_app.h

uint16_t GetMicData(void);

 and nothing return.

[AHakk.1]

I found the problem, turns out I can't use the ADC_CHANNEL_0 in ping pong Application (I try to see in cubemxide pin configuration IN0 is pink). I don't know why but I change it ADC_CHANNEL_3 and now everything is working good.