/*
 * This file is part of the pwmtest project.
 * Copyright 2020 Edward V. Emelianov <edward.emelianoff@gmail.com>.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once
#ifndef __HARDWARE_H__
#define __HARDWARE_H__

#include "stm32f1.h"

// frequency of TIM1 clocking
#define TIM1FREQ    (72000000)

// LED0 - PC13 (bluepill), blinking each second
#define LED0_port   GPIOC
#define LED0_pin    (1<<13)

// USB pullup (not present in bluepill, should be soldered) - PA15
#define USBPU_port  GPIOA
#define USBPU_pin   (1<<15)
#define USBPU_ON()  pin_set(USBPU_port, USBPU_pin)
#define USBPU_OFF() pin_clear(USBPU_port, USBPU_pin)

#define LED_blink(x)    pin_toggle(x ## _port, x ## _pin)
#define LED_on(x)       pin_clear(x ## _port, x ## _pin)
#define LED_off(x)      pin_set(x ## _port, x ## _pin)

void hw_setup();
void iwdg_setup();

#define PWM_ON()        do{TIM1->CR1 = TIM_CR1_CEN | TIM_CR1_ARPE;}while(0)
#define PWM_OFF()       do{TIM1->CR1 = TIM_CR1_ARPE;}while(0)

int changePWMfreq(uint32_t freq);
int changePWMduty(uint32_t duty);

#endif // __HARDWARE_H__