37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
#include "PWM_control.h"
|
|
#include <stdint.h>
|
|
|
|
uint8_t powerground_status;
|
|
uint8_t battery_cooling_status;
|
|
//uint32_t powerground1_CCR, powerground2_CCR, battery_cooling_CCR;
|
|
|
|
TIM_HandleTypeDef powerground1, powerground2, battery_cooling;
|
|
|
|
/*
|
|
Pulse width modulation mode allows for generating a signal with a frequency determined by
|
|
the value of the TIMx_ARR register and a duty cycle determined by the value of the TIMx_CCRx register.
|
|
*/
|
|
|
|
void PWM_control_init(TIM_HandleTypeDef powerground1, TIM_HandleTypeDef powerground2, TIM_HandleTypeDef battery_cooling){
|
|
powerground_status = 0;
|
|
battery_cooling_status = 0;
|
|
|
|
HAL_TIM_PWM_Start(&powerground1, 1); //TIM15CH1
|
|
HAL_TIM_PWM_Start(&powerground2, 2); //TIM15CH2
|
|
HAL_TIM_PWM_Start(&battery_cooling, 3); //TIM1CH3
|
|
}
|
|
|
|
/*
|
|
controls the duty cycle of the fans by setting the CCR of the channel percent/100 = x/ARR
|
|
*/
|
|
void PWM_powerground_control(uint8_t percent){
|
|
if (percent > 100 || percent < 0)
|
|
return;
|
|
|
|
powerground_status = percent/100;
|
|
TIM15->CCR1 = (TIM15->ARR*POWERGROUND_MAX_DUTY_CYCLE-TIM15->ARR*POWERGROUND_MIN_DUTY_CYCLE)
|
|
* (percent/100) + TIM15->ARR*POWERGROUND_MIN_DUTY_CYCLE;
|
|
TIM15->CCR2 = TIM15->CCR1; /* *1.01 or *0.99 if the speeds of the fans are different*/
|
|
}
|
|
|
|
void PWM_battery_cooling_control(uint8_t percent){} |