ADC multiple Sampling

Question

Hello Everybody,

I have read these articles on the site : article_1 & article_2

I need to do something like that, read around 8000 sample with sampling rate equals to 100khz I mean get the readout from the adc, send it to the mobile to do some statistics but I found that there is a limitation on the sampling rate.

would you mind helping me or if there is something I did is not correct, check the attached code:

		//ADC_CONFIG_REFSEL_SupplyOneThirdPrescaling
			// Configure ADC
			NRF_ADC->CONFIG     = (ADC_CONFIG_RES_8bit                             << ADC_CONFIG_RES_Pos)     |
														(ADC_CONFIG_INPSEL_AnalogInputOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos)  |
														(ADC_CONFIG_REFSEL_VBG										       << ADC_CONFIG_REFSEL_Pos)  |
														(ADC_CONFIG_PSEL_AnalogInput4                    << ADC_CONFIG_PSEL_Pos)    |
														(ADC_CONFIG_EXTREFSEL_None                       << ADC_CONFIG_EXTREFSEL_Pos);
			NRF_ADC->EVENTS_END = 0;
			NRF_ADC->ENABLE     = ADC_ENABLE_ENABLE_Enabled;

			NRF_ADC->EVENTS_END  = 0;    // Stop any running conversions.
			NRF_ADC->TASKS_START = 1;
			
			while (!NRF_ADC->EVENTS_END)
			{
			}
			

			
			NRF_ADC->EVENTS_END     = 0;
			NRF_ADC->TASKS_STOP     = 1;
			
			return NRF_ADC->RESULT;
	}

		#define num_bit						8
		#define number_samples    10
		#define threshold 				500

				
		static void level_meas_timeout_handler(void * p_context)
		{
				UNUSED_PARAMETER(p_context);
				uint32_t err_code ;

				for (j = 0; j < num_bit ; j++)
				{
					for (k=0; k < number_samples ; k++)
					{
							//get the adc reading
							sample_I_temp[j][k] = temp_level_get();
							nrf_delay_ms(1);
							//nrf_delay_us(20);
					}
				}
				

			for (j = 0; j < num_bit ; j++)
				{ 
					for (k=0; k < number_samples ; k++)
					{
					err_code = ble_level_update(&m_temp,sample_I_temp[j][k]);
						if ((err_code != NRF_SUCCESS) &&
							(err_code != NRF_ERROR_INVALID_STATE) &&
							(err_code != BLE_ERROR_NO_TX_BUFFERS) &&
							(err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
							)
							{
									APP_ERROR_HANDLER(err_code);
							}
							nrf_delay_ms(10);
					}
				} 
		}

ble level update function will send the value of the adc as a notification for the mobile.