SoftPwmSTM32

With this library it is possible to have up to 20 pwm outputs on the digital pins of the development boards and microcontrollers compatible with STM32 for Arduino.

To work with the library, it must be included in the following way:

#include "softPwmStm32.h"

Inside the setup block we initialize our library and configure the pins that we want to use with pwm using the softPwmSTM32Attach function passing as arguments the pin we want and the percentage of pwm we want in said pin as follows:

void setup() {
  softPwmSTM32Init();
  softPwmSTM32Attach(LED_BUILTIN,0);
}

To update the pwm of our pin we use the softPwmSTM32Set function, as shown in the following example:

void loop() {
  for(uint8_t i=0;i<100;i++){
    softPwmSTM32Set(LED_BUILTIN,i);
    delay(2);
  }
  for(uint8_t i=100;i>0;i--){
    softPwmSTM32Set(LED_BUILTIN,i);
    delay(2);
  }
}

To deactivate the softPwm on one of our pins we use the softPwmSTM32Dettach function:

softPwmSTM32Dettach(LED_BUILTIN);