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10 years, 3 months ago.

PWM Library and include a library

Hey guys,

i am a beginner in the STM32 World. At the moment i am using the online STM32 Editor and i found a FastPWM library by Erik Olieman which i tried to use. But it didn't work. I Used the following source code 

#include "mbed.h"
#include "FastPWM.h"

PwmOut mypwm(PWM_OUT);

DigitalOut myled(LED1);

int main() {
    
    mypwm.period_ms(10);
    mypwm.pulsewidth_ms(1);
  
    printf("pwm set to %.2f %%\n", mypwm.read() * 100);
    
    while(1) {
        myled = !myled;
        wait(1);
    }
}

and it produces the following error message "Error: Expression must have (pointer-to-) function type in "FastPWM/FastPWM_common.cpp", Line: 6, Col: 6"

in the manuial is written that i have to define the prescaler e.g. with -1. but it didn't work as well.

So can you tell me how i can fix this problem?

On the other hand does anybody have a fastPWM library with which it is possible to generate a PWM above 1 MHz?

I am using the Nucleo F411Re board.

thank you very much!

Replied in your duplicate forum topic :)

posted by Erik - 03 Sep 2015
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