/*
 *  PWM_control.h
 *
 *  Created on: 07.07.2024
 *      Author: Hamza
 */
 
#ifndef INC_PWM_CONTROL_H
#define INC_PWM_CONTROL_H

#include "stm32f3xx_hal.h"
#include "state_machine.h"

/*  The PWM period (1/FPWM) is defined by the following parameters: 
ARR value, the Prescaler value, and the internal clock itself which drives the timer module FCLK.
F_PWM = (F_CLK)/((ARR + 1) * (PSC + 1))
(ARR + 1) * (PSC + 1) = (F_CLK)/(F_PWM)
(PSC + 1) = (F_CLK)/(F_PWM * (ARR + 1))

F_CLK = 16 MHz

POWERGROUND ESC Signal: pulse every 20 ms, 1 ms = 0%, 2 ms = 100%
FREQ = 50 Hz -> 16 MHz/50 Hz = 320000 = ((39999 + 1) * (7 + 1))
DUTY CYCLE = 1/20 -> 0%, DUTY CYCLE = 2/20 -> 100% 
CCR * DUTY_CYCLE
CCR: 1/20 -> 500, 2/20 -> 1000
*/
// UNUSED
#define POWERGROUND_FREQ            50
#define POWERGROUND_PRESCALER       7
#define POWERGROUND_ARR             39999
#define POWERGROUND_MIN_DUTY_CYCLE  0.05
#define POWERGROUND_MAX_DUTY_CYCLE  0.1

//#define BATTERY_COOLING_FREQ        20000

extern uint8_t current_powerground_status;
extern uint8_t target_powerground_status;

void PWM_control_init(TIM_HandleTypeDef* pg, TIM_HandleTypeDef* bat_cool, TIM_HandleTypeDef* esc_cool);
void PWM_powerground_softcontrol();
void PWM_powerground_control(uint8_t percent);
void PWM_battery_cooling_control(uint8_t percent);

#endif /* INC_CHANNEL_CONTROL_H */