Cannot get ADC value and put it into a array STM32F103C8T6 - arm

Question

I try to put ADC value into a 1d array and transmit it to PC.
But it is not work. I using HAL_ADC_GetValue() to read data from chanel0 of ADC1.
Here is my code:
// maxziedata = 2048.
uint8_t DATA_ALL[MAXSIZEDATA];
void ReadAll(){
memset(DATA_ALL, 0, sizeof(DATA_ALL));
delay_us(timeDelay);
int count =-1;
//Read 32 Row
for(int row=0; row<32; row++){
SelectRow(row); //Read 32 Row
for(int col=0; col<32; col++){
SelectCol(col); //Read 32 Column
++count;
HAL_ADC_Start(&hadc1);
HAL_ADC_PollForConversion(&hadc1,50);
HAL_IS_BIT_SET(HAL_ADC_GetState(&hadc1), HAL_ADC_STATE_REG_EOC);
delay_us(10);
uint16_t data = HAL_ADC_GetValue(&hadc1); // Data is alway equal 0
// if data = n, PC will received data.
DATA_ALL[count*2] = data & 0xff;
DATA_ALL[count*2+1] = (data >> 8) & 0xff;
HAL_ADC_Stop(&hadc1);
}
HAL_GPIO_WritePin(GPIOB,EN_COL_1_Pin,GPIO_PIN_SET);
}
HAL_GPIO_WritePin(GPIOA,EN_ROW_1_Pin,GPIO_PIN_SET);
}
If I fake data uint16_t data = HAL_ADC_GetValue(&hadc1); change to uint16_t data = count, PC will receive data.
When I transmit only one value of array, PC will be received data.
void ReadOne(int row, int col){
memset(SEND_DATA, 0, sizeof(SEND_DATA));
HAL_ADC_Start(&hadc1);
SelectRow(row);
SelectCol(col);
HAL_ADC_Start(&hadc1);
delay_us(100);
HAL_ADC_PollForConversion(&hadc1,1);
uint16_t avg = 0;
for(int i=0; i<samplingTimes; i++){
avg += HAL_ADC_GetValue(&hadc1);
}
SEND_DATA[(row*32+col)*2] = avg/samplingTimes & 0xff;
SEND_DATA[((row*32+col)*2)+1] = (avg/samplingTimes >> 8) & 0xff;
HAL_ADC_Stop(&hadc1);
delay_us(100);
}
Here is my config ADC:
The main problem is HAL_ADC_GetValue() cannot put data into array after step of loop