Change ODR setting of ADXL355

Mbed OS Best practice
1

Hello, I am using adxl355 and confused how to change the setting of odr. Here is the code. As you can see, I have the set_filter_ctl_reg in the main. But it seems not working. I feel that only the part in the while loop influence the sampling rate. In the datasheet, it does say that adjusting the filter to changing the odr. Anyone knows? Thank you!

#include “mbed.h”
#include “system_stm32f4xx.h”
#include “ADXL_355Z.h”

void Data_Collect(void);
//The virtual COM port
Serial pc(SERIAL_TX,SERIAL_RX);

//The voltage supply for the accelerator and the sEMG
DigitalOut SC1(PC_9);
DigitalOut SC2(PC_8);

ADXL355 acclA(PC_9, PC_12, PC_11, PC_10); //Set the SPI for the ACC_1
ADXL355 acclB(PC_8, PC_12, PC_11, PC_10); //Set the SPI for the ACC_1
Timer Time_up; //The timer for the arrangement

//All the variable here, are global variable
//They will be called by the Ticker function
float ADC_Value;
float xA, yA, zA;
float xB, yB, zB;

void Data_Collect(void){

   xA = acclA.convert(acclA.scanx())*acclA.axis355_sens;
   yA = acclA.convert(acclA.scany())*acclA.axis355_sens;
   zA = acclA.convert(acclA.scanz())*acclA.axis355_sens;

   xB = acclB.convert(acclB.scanx())*acclB.axis355_sens;
   yB = acclB.convert(acclB.scany())*acclB.axis355_sens;
   zB = acclB.convert(acclB.scanz())*acclB.axis355_sens;

 pc.printf("%.6f%.6f%.6f%.6f%.6f%.6f%\n", xA,yA,zA,xB,yB,zB);

}

int main(){

pc.baud(9600);
pc.printf("ADC sEMG demo\r\n");

acclA.reset();
acclB.reset();
wait(0.1); //The waiting is needed

acclA.set_filter_ctl_reg(acclA.HPFOFF,acclA.ODR4000HZ);
acclB.set_filter_ctl_reg(acclB.HPFOFF,acclB.ODR4000HZ);
wait(0.1); //The waiting is needed

acclA.set_power_ctl_reg(acclA.MEASUREMENT);
acclB.set_power_ctl_reg(acclB.MEASUREMENT);
wait(0.1); //The waiting is needed

Time_up.start();

while(1){
       Data_Collect();
}

}