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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
*
* 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 <https://www.gnu.org/licenses/>.
*
*/
#pragma once
#include <stdint.h>
#include <driver/timer.h>
// ------------------------
// Defines
// ------------------------
#define FORCE_INLINE __attribute__((always_inline)) inline
typedef uint64_t hal_timer_t;
#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFFFFFFFFFULL
#ifndef STEP_TIMER_NUM
#define STEP_TIMER_NUM 0 // Timer Index for Stepper
#endif
#ifndef PULSE_TIMER_NUM
#define PULSE_TIMER_NUM STEP_TIMER_NUM
#endif
#ifndef TEMP_TIMER_NUM
#define TEMP_TIMER_NUM 1 // Timer Index for Temperature
#endif
#ifndef PWM_TIMER_NUM
#define PWM_TIMER_NUM 2 // index of timer to use for PWM outputs
#endif
#ifndef TONE_TIMER_NUM
#define TONE_TIMER_NUM 3 // index of timer for beeper tones
#endif
#define HAL_TIMER_RATE APB_CLK_FREQ // frequency of timer peripherals
#if ENABLED(I2S_STEPPER_STREAM)
#define STEPPER_TIMER_PRESCALE 1
#define STEPPER_TIMER_RATE 250000 // 250khz, 4µs pulses of i2s word clock
#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs // wrong would be 0.25
#else
#define STEPPER_TIMER_PRESCALE 40
#define STEPPER_TIMER_RATE ((HAL_TIMER_RATE) / (STEPPER_TIMER_PRESCALE)) // frequency of stepper timer, 2MHz
#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
#endif
#define STEP_TIMER_MIN_INTERVAL 8 // minimum time in µs between stepper interrupts
#define TONE_TIMER_PRESCALE 1000 // Arbitrary value, no idea what i'm doing here
#define TEMP_TIMER_PRESCALE 1000 // prescaler for setting Temp timer, 72Khz
#define TEMP_TIMER_FREQUENCY 1000 // temperature interrupt frequency
#define PWM_TIMER_PRESCALE 10
#if ENABLED(FAST_PWM_FAN)
#define PWM_TIMER_FREQUENCY FAST_PWM_FAN_FREQUENCY
#else
#define PWM_TIMER_FREQUENCY (50*128) // 50Hz and 7bit resolution
#endif
#define MAX_PWM_PINS 32 // Number of PWM pin-slots
#define PULSE_TIMER_RATE STEPPER_TIMER_RATE // frequency of pulse timer
#define PULSE_TIMER_PRESCALE STEPPER_TIMER_PRESCALE
#define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US
#define ENABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_enable_interrupt(STEP_TIMER_NUM)
#define DISABLE_STEPPER_DRIVER_INTERRUPT() HAL_timer_disable_interrupt(STEP_TIMER_NUM)
#define STEPPER_ISR_ENABLED() HAL_timer_interrupt_enabled(STEP_TIMER_NUM)
#define ENABLE_TEMPERATURE_INTERRUPT() HAL_timer_enable_interrupt(TEMP_TIMER_NUM)
#define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt(TEMP_TIMER_NUM)
#ifndef HAL_TEMP_TIMER_ISR
#define HAL_TEMP_TIMER_ISR() extern "C" void tempTC_Handler()
#endif
#ifndef HAL_STEP_TIMER_ISR
#define HAL_STEP_TIMER_ISR() extern "C" void stepTC_Handler()
#endif
#ifndef HAL_PWM_TIMER_ISR
#define HAL_PWM_TIMER_ISR() extern "C" void pwmTC_Handler()
#endif
#ifndef HAL_TONE_TIMER_ISR
#define HAL_TONE_TIMER_ISR() extern "C" void toneTC_Handler()
#endif
extern "C" {
void tempTC_Handler();
void stepTC_Handler();
void pwmTC_Handler();
void toneTC_Handler();
}
// ------------------------
// Types
// ------------------------
typedef struct {
timer_group_t group;
timer_idx_t idx;
uint32_t divider;
void (*fn)();
} tTimerConfig;
// ------------------------
// Public Variables
// ------------------------
extern const tTimerConfig TimerConfig[];
// ------------------------
// Public functions
// ------------------------
void HAL_timer_start (const uint8_t timer_num, uint32_t frequency);
void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t count);
hal_timer_t HAL_timer_get_compare(const uint8_t timer_num);
hal_timer_t HAL_timer_get_count(const uint8_t timer_num);
void HAL_timer_enable_interrupt(const uint8_t timer_num);
void HAL_timer_disable_interrupt(const uint8_t timer_num);
bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
#define HAL_timer_isr_prologue(TIMER_NUM)
#define HAL_timer_isr_epilogue(TIMER_NUM)
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