Arduino for STM32

Thanks a lot @ozcar , I understood your point. Thanks @ag123 , for giving the idea of HardwareTimer. I will try with that also.

This is the basic code:-
#include <Arduino.h>

void setup()
{
pinMode(PA1, OUTPUT);
pinMode(PA2, OUTPUT);
pinMode(PA3, OUTPUT);
pinMode(PA6, OUTPUT);
pinMode(PA7, OUTPUT);
pinMode(PB0, OUTPUT);
pinMode(PB1, OUTPUT);
pinMode(PB10, OUTPUT);
pinMode(PB11, OUTPUT);
pinMode(PB5, OUTPUT ...

I am new to STM32 and I am using STM32F103C8 blue pill for one of my projects. I tried making every PWM pin to some value using the analogWrite function, but only 3-4 of the total pins showed the exact voltage. What can be the reason for this? Actually, for the project I am controlling 6 motors ...