Multiple ADC channels coding

Firmware
1

Hello,
Inspired from the project https://community.spark.io/t/what-is-maximum-analog-sample-rate-of-spark-core/8450/10 , I am trying to code for 8 ADC channels to detect the same 25kHz signals as the previous project. I send the value through USB but it does not work, nothing appears. Maybe I mistake somewhere. Anyone has ideas? I am very appreciate. Thanks

[CODE]
#include “application.h”
#define ADC1_DR_Address ((uint32_t) 0x4001244c)

uint16_t ADCBuffer[8];
int myArray[1024];
void setup()
{
//Spark.disconnect();
//WiFi.off();

GPIO_InitTypeDef GPIO_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
ADC_InitTypeDef ADC_InitStructure;
Serial.begin(9600);

//enable ADC1 clock
RCC_ADCCLKConfig(RCC_PCLK2_Div6);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_ADC1, ENABLE);

// GPIO configuration pin A0
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1| GPIO_Pin_2| GPIO_Pin_3| GPIO_Pin_4| GPIO_Pin_5| GPIO_Pin_6| GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);

// DMA configuration
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADCBuffer[0];
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 8;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; // non circular
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
// DMA enable
DMA_Cmd(DMA1_Channel1, ENABLE);

//ADC1 configuration
//select independent conversion mode (single)
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
//We will convert single channel only
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
//We will convert one time
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
//Select no external triggering
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
//Right 12-bit data alignment in ADC data register
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
//Multiple channel conversion
ADC_InitStructure.ADC_NbrOfChannel = 8;
//Load structure values to control and status registers
ADC_Init(ADC1, &ADC_InitStructure);

//ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_1Cycles5); // max 150KHz ---? 1Mhz?
//wake up temperature sensor
//configure each channel
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_1Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_1Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_1Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 4, ADC_SampleTime_1Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 5, ADC_SampleTime_1Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 6, ADC_SampleTime_1Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 7, ADC_SampleTime_1Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 8, ADC_SampleTime_1Cycles5);
// Enable ADC1 DMA
ADC_DMACmd(ADC1, ENABLE);
//Enable ADC1
ADC_Cmd(ADC1, ENABLE);
//Enable ADC1 reset calibration register
ADC_ResetCalibration(ADC1);
//Check the end of ADC1 reset calibration register
while (ADC_GetResetCalibrationStatus(ADC1));
//Start ADC1 calibration
ADC_StartCalibration(ADC1);
//Check the end of ADC1 calibration
while (ADC_GetCalibrationStatus(ADC1));
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
//while (!Serial.available());
pinMode(D7, OUTPUT);
digitalWrite(D7, HIGH);   // Turn ON the LED
delay(1000);               // Wait for 1000mS = 1 second
digitalWrite(D7, LOW);    // Turn OFF the LED
delay(1000);

}

void loop()
{
int threadhold = 1250;
while(1)
{
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while (!DMA_GetFlagStatus(DMA1_FLAG_TC1));
DMA_ClearFlag(DMA1_FLAG_TC1);
if(ADCBuffer[0]>threadhold)
{
break;
}
}
digitalWrite(D7, HIGH);
for(int i=0; i<1024; i++)
{
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
while (!DMA_GetFlagStatus(DMA1_FLAG_TC1));
DMA_ClearFlag(DMA1_FLAG_TC1);
for (int n=0; n<8; n++)
{
myArray[j]=ADCBuffer[n];
j++;
}
}
delay(1000);
digitalWrite(D7, LOW); // Turn OFF the LED

for (int i=0; i<1024; i++)
{
    Serial.println(myArray[i]);
}

}
[/CODE]