source: trunk/firmware_v2/SES/src/fan.c

#include "fan.h"
#include "tim.h"
static unsigned lastSpeed;

void FAN_SetSpeed(unsigned speed)
{
        const unsigned MAX_RPM = 100U;                                                                                  // 100.0%

        if (speed > MAX_RPM) speed = MAX_RPM;

        lastSpeed = speed;

        const unsigned MAX_PWM = __HAL_TIM_GET_AUTORELOAD(&htim17) + 1U;
        //printf("%u", MAX_PWM);
        const unsigned newPWM = (MAX_PWM * speed/ MAX_RPM);

        __HAL_TIM_SET_COMPARE(&htim17, TIM_CHANNEL_1, newPWM);
}

//-----------------------------------------------------------------------------

unsigned FAN_GetLastSpeed(void)
{
        return lastSpeed;
}